{"title":"Dometic® Furnace Units","description":"\u003cp\u003eDometic (formerly Atwood) furnace units are industry-leading heating solutions known for their lightweight, compact design and efficient tubular heat exchangers that maximize airflow and minimize noise for a comfortable RV environment.\u003c\/p\u003e","products":[{"product_id":"dfmd30111-dometic-rv-medium-furnace-30k-btu-12v-dc","title":"Dometic™ DFMDH30111 RV Furnace – 30,000 BTU – LP Gas – Bottom Discharge – 12V DC","description":"\u003ch1 data-start=\"180\" data-end=\"264\"\u003eDometic™ DFMDH30111 RV Furnace – 30,000 BTU – LP Gas – Bottom Discharge – 12V DC\u003c\/h1\u003e\n\u003cp data-start=\"265\" data-end=\"320\"\u003e\u003cstrong data-start=\"265\" data-end=\"320\"\u003eDFM Series | Hall Effect Sensor Model | Medium Size\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"322\" data-end=\"573\"\u003e\u003cstrong data-start=\"322\" data-end=\"332\"\u003eModel:\u003c\/strong\u003e DFMDH30111\u003cbr data-start=\"343\" data-end=\"346\"\u003e\u003cstrong data-start=\"346\" data-end=\"357\"\u003eSeries:\u003c\/strong\u003e DFM “H” Series\u003cbr data-start=\"372\" data-end=\"375\"\u003e\u003cstrong data-start=\"375\" data-end=\"389\"\u003eFuel Type:\u003c\/strong\u003e LP Gas (Propane)\u003cbr data-start=\"406\" data-end=\"409\"\u003e\u003cstrong data-start=\"409\" data-end=\"424\"\u003eBTU Output:\u003c\/strong\u003e 30,000 BTU\u003cbr data-start=\"435\" data-end=\"438\"\u003e\u003cstrong data-start=\"438\" data-end=\"448\"\u003eStage:\u003c\/strong\u003e Single Stage\u003cbr data-start=\"461\" data-end=\"464\"\u003e\u003cstrong data-start=\"464\" data-end=\"476\"\u003eVoltage:\u003c\/strong\u003e 12 Volt DC\u003cbr data-start=\"487\" data-end=\"490\"\u003e\u003cstrong data-start=\"490\" data-end=\"509\"\u003eDischarge Type:\u003c\/strong\u003e Bottom Discharge\u003cbr data-start=\"526\" data-end=\"529\"\u003e\u003cstrong data-start=\"529\" data-end=\"573\"\u003eAccess Door \u0026amp; Thermostat Sold Separately\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"575\" data-end=\"578\"\u003e\n\u003ch2 data-start=\"580\" data-end=\"599\"\u003eProduct Overview\u003c\/h2\u003e\n\u003cp data-start=\"601\" data-end=\"758\"\u003eThe \u003cstrong data-start=\"605\" data-end=\"628\"\u003eDometic™ DFMDH30111\u003c\/strong\u003e is a high-capacity \u003cstrong data-start=\"648\" data-end=\"680\"\u003e30,000 BTU LP gas RV furnace\u003c\/strong\u003e designed for medium-sized RV applications requiring bottom-discharge ducting.\u003c\/p\u003e\n\u003cp data-start=\"760\" data-end=\"955\"\u003eAs part of the updated \u003cstrong data-start=\"783\" data-end=\"801\"\u003eDFM “H” Series\u003c\/strong\u003e, this furnace features an advanced \u003cstrong data-start=\"837\" data-end=\"880\"\u003eHall Effect airflow verification system\u003c\/strong\u003e, replacing the traditional mechanical sail switch found in older furnaces.\u003c\/p\u003e\n\u003cp data-start=\"957\" data-end=\"1169\"\u003eInstead of relying on a paddle-style airflow switch that can stick or collect dust, the Hall Effect system electronically monitors blower motor rotation to confirm proper airflow before ignition. This results in:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1173\" data-end=\"1210\"\u003eFaster and more consistent ignition\u003c\/li\u003e\n\u003cli data-start=\"1213\" data-end=\"1251\"\u003eFewer airflow-related service issues\u003c\/li\u003e\n\u003cli data-start=\"1254\" data-end=\"1306\"\u003eImproved reliability in cold or dusty environments\u003c\/li\u003e\n\u003cli data-start=\"1309\" data-end=\"1361\"\u003eReduced maintenance compared to sail-switch models\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1363\" data-end=\"1534\"\u003eOperating on standard \u003cstrong data-start=\"1385\" data-end=\"1399\"\u003e12 Volt DC\u003c\/strong\u003e, the DFMDH30111 is ideal for replacement installations requiring dependable propane heating with modern electronic airflow monitoring.\u003c\/p\u003e\n\u003cp data-start=\"1536\" data-end=\"1649\"\u003e⚠ \u003cstrong data-start=\"1538\" data-end=\"1552\"\u003eImportant:\u003c\/strong\u003e Always measure your existing furnace cut-out dimensions before purchasing to confirm proper fit.\u003c\/p\u003e\n\u003chr data-start=\"1651\" data-end=\"1654\"\u003e\n\u003ch1 data-start=\"1656\" data-end=\"1670\"\u003eKey Features\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli data-start=\"1674\" data-end=\"1703\"\u003e30,000 BTU heating capacity\u003c\/li\u003e\n\u003cli data-start=\"1706\" data-end=\"1734\"\u003eLP gas (propane) operation\u003c\/li\u003e\n\u003cli data-start=\"1737\" data-end=\"1771\"\u003eSingle-stage heating performance\u003c\/li\u003e\n\u003cli data-start=\"1774\" data-end=\"1814\"\u003eBottom discharge airflow configuration\u003c\/li\u003e\n\u003cli data-start=\"1817\" data-end=\"1839\"\u003e12 Volt DC operation\u003c\/li\u003e\n\u003cli data-start=\"1842\" data-end=\"1915\"\u003e\u003cstrong data-start=\"1842\" data-end=\"1913\"\u003eHall Effect airflow verification system (no mechanical sail switch)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"1918\" data-end=\"1950\"\u003eBuilt-In Soft Start technology\u003c\/li\u003e\n\u003cli data-start=\"1953\" data-end=\"1987\"\u003eReduced startup electrical surge\u003c\/li\u003e\n\u003cli data-start=\"1990\" data-end=\"2026\"\u003eMedium-size installation footprint\u003c\/li\u003e\n\u003cli data-start=\"2029\" data-end=\"2069\"\u003eDesigned for modern RV furnace systems\u003c\/li\u003e\n\u003cli data-start=\"2072\" data-end=\"2101\"\u003eAccess door sold separately\u003c\/li\u003e\n\u003cli data-start=\"2104\" data-end=\"2132\"\u003eThermostat sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2134\" data-end=\"2137\"\u003e\n\u003ch1 data-start=\"2139\" data-end=\"2155\"\u003eSpecifications\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli data-start=\"2159\" data-end=\"2182\"\u003e\n\u003cstrong data-start=\"2159\" data-end=\"2169\"\u003eModel:\u003c\/strong\u003e DFMDH30111\u003c\/li\u003e\n\u003cli data-start=\"2185\" data-end=\"2211\"\u003e\n\u003cstrong data-start=\"2185\" data-end=\"2196\"\u003eSeries:\u003c\/strong\u003e DFM H Series\u003c\/li\u003e\n\u003cli data-start=\"2214\" data-end=\"2242\"\u003e\n\u003cstrong data-start=\"2214\" data-end=\"2229\"\u003eBTU Rating:\u003c\/strong\u003e 30,000 BTU\u003c\/li\u003e\n\u003cli data-start=\"2245\" data-end=\"2268\"\u003e\n\u003cstrong data-start=\"2245\" data-end=\"2259\"\u003eFuel Type:\u003c\/strong\u003e LP Gas\u003c\/li\u003e\n\u003cli data-start=\"2271\" data-end=\"2304\"\u003e\n\u003cstrong data-start=\"2271\" data-end=\"2289\"\u003eHeating Stage:\u003c\/strong\u003e Single Stage\u003c\/li\u003e\n\u003cli data-start=\"2307\" data-end=\"2332\"\u003e\n\u003cstrong data-start=\"2307\" data-end=\"2319\"\u003eVoltage:\u003c\/strong\u003e 12 Volt DC\u003c\/li\u003e\n\u003cli data-start=\"2335\" data-end=\"2372\"\u003e\n\u003cstrong data-start=\"2335\" data-end=\"2363\"\u003eDischarge Configuration:\u003c\/strong\u003e Bottom\u003c\/li\u003e\n\u003cli data-start=\"2375\" data-end=\"2401\"\u003e\n\u003cstrong data-start=\"2375\" data-end=\"2385\"\u003eWidth:\u003c\/strong\u003e 16-1\/2 inches\u003c\/li\u003e\n\u003cli data-start=\"2404\" data-end=\"2426\"\u003e\n\u003cstrong data-start=\"2404\" data-end=\"2415\"\u003eHeight:\u003c\/strong\u003e 7 inches\u003c\/li\u003e\n\u003cli data-start=\"2429\" data-end=\"2451\"\u003e\n\u003cstrong data-start=\"2429\" data-end=\"2439\"\u003eDepth:\u003c\/strong\u003e 20 inches\u003c\/li\u003e\n\u003cli data-start=\"2454\" data-end=\"2498\"\u003e\n\u003cstrong data-start=\"2454\" data-end=\"2477\"\u003eAirflow Monitoring:\u003c\/strong\u003e Hall Effect Sensor\u003c\/li\u003e\n\u003cli data-start=\"2501\" data-end=\"2533\"\u003e\n\u003cstrong data-start=\"2501\" data-end=\"2527\"\u003eSoft Start Technology:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli data-start=\"2536\" data-end=\"2566\"\u003e\n\u003cstrong data-start=\"2536\" data-end=\"2561\"\u003eAccess Door Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli data-start=\"2569\" data-end=\"2598\"\u003e\n\u003cstrong data-start=\"2569\" data-end=\"2593\"\u003eThermostat Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2600\" data-end=\"2603\"\u003e\n\u003ch1 data-start=\"2605\" data-end=\"2645\"\u003eWhy Choose the H-Series (Hall Effect)?\u003c\/h1\u003e\n\u003cp data-start=\"2647\" data-end=\"2748\"\u003eTraditional RV furnaces use a mechanical sail switch to detect airflow. Over time, sail switches may:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"2752\" data-end=\"2783\"\u003eBecome contaminated with dust\u003c\/li\u003e\n\u003cli data-start=\"2786\" data-end=\"2816\"\u003eStick or fail intermittently\u003c\/li\u003e\n\u003cli data-start=\"2819\" data-end=\"2837\"\u003ePrevent ignition\u003c\/li\u003e\n\u003cli data-start=\"2840\" data-end=\"2873\"\u003eRequire cleaning or replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2875\" data-end=\"3016\"\u003eThe \u003cstrong data-start=\"2879\" data-end=\"2931\"\u003eDFMDH30111 eliminates the mechanical sail switch\u003c\/strong\u003e and uses an electronic Hall Effect sensor to monitor blower motor rotation directly.\u003c\/p\u003e\n\u003cp data-start=\"3018\" data-end=\"3035\"\u003eBenefits include:\u003c\/p\u003e\n\u003cp data-start=\"3037\" data-end=\"3189\"\u003e✔ Improved long-term reliability\u003cbr data-start=\"3069\" data-end=\"3072\"\u003e✔ More consistent ignition performance\u003cbr data-start=\"3110\" data-end=\"3113\"\u003e✔ Reduced maintenance\u003cbr data-start=\"3134\" data-end=\"3137\"\u003e✔ Better performance in extreme weather conditions\u003c\/p\u003e\n\u003chr data-start=\"3191\" data-end=\"3194\"\u003e\n\u003ch1 data-start=\"3196\" data-end=\"3230\"\u003eFrequently Asked Questions (FAQ)\u003c\/h1\u003e\n\u003cp data-start=\"3232\" data-end=\"3386\"\u003e\u003cstrong data-start=\"3232\" data-end=\"3271\"\u003eQ: What does the “H” in DFMDH mean?\u003c\/strong\u003e\u003cbr data-start=\"3271\" data-end=\"3274\"\u003eA: It indicates the furnace uses a Hall Effect airflow verification system instead of a traditional sail switch.\u003c\/p\u003e\n\u003cp data-start=\"3388\" data-end=\"3491\"\u003e\u003cstrong data-start=\"3388\" data-end=\"3440\"\u003eQ: Does this model use a mechanical sail switch?\u003c\/strong\u003e\u003cbr data-start=\"3440\" data-end=\"3443\"\u003eA: No. It uses an electronic Hall Effect sensor.\u003c\/p\u003e\n\u003cp data-start=\"3493\" data-end=\"3595\"\u003e\u003cstrong data-start=\"3493\" data-end=\"3525\"\u003eQ: What is Bottom Discharge?\u003c\/strong\u003e\u003cbr data-start=\"3525\" data-end=\"3528\"\u003eA: Heated air exits vertically downward into floor ducting systems.\u003c\/p\u003e\n\u003cp data-start=\"3597\" data-end=\"3696\"\u003e\u003cstrong data-start=\"3597\" data-end=\"3629\"\u003eQ: Is a thermostat included?\u003c\/strong\u003e\u003cbr data-start=\"3629\" data-end=\"3632\"\u003eA: No. A compatible 12V thermostat must be purchased separately.\u003c\/p\u003e\n\u003cp data-start=\"3698\" data-end=\"3793\"\u003e\u003cstrong data-start=\"3698\" data-end=\"3748\"\u003eQ: Does this include the exterior access door?\u003c\/strong\u003e\u003cbr data-start=\"3748\" data-end=\"3751\"\u003eA: No. The access door is sold separately.\u003c\/p\u003e\n\u003cp data-start=\"3795\" data-end=\"3989\"\u003e\u003cstrong data-start=\"3795\" data-end=\"3847\"\u003eQ: Can this replace older 30K BTU Atwood models?\u003c\/strong\u003e\u003cbr data-start=\"3847\" data-end=\"3850\"\u003eA: In many cases, yes — but always verify cut-out dimensions, discharge direction, and gas\/electrical connection placement before ordering.\u003c\/p\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp data-path-to-node=\"5\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0784\/4941\/0289\/files\/dometic_logo_3.jpg?v=1770575537\" alt=\"\" width=\"250\" height=\"54\"\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"2\"\u003e \u003c\/p\u003e\n\u003cdiv class=\"attachment-container unknown\"\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003ca rel=\"noopener\" class=\"product-card single-product-card-view one-image\" href=\"https:\/\/google.com\/search?q=Dometic+%7C+Medium+Furnace+%7C+DFMD30111+%7C+DFMDH30111+%7C+30,000+BTU\u0026amp;prds=headlineOfferDocid%3A12356856127902001319%2Cproductid%3A12356856127902001319%2Cpvo%3A38%2Cpvt%3Ahg\u0026amp;ibp=oshop\u0026amp;pvo=38\u0026amp;opi=103135050\u0026amp;gl=us\u0026amp;hl=en\u0026amp;noiga=1\" target=\"_blank\"\u003e\u003c!----\u003e\n\u003cdiv class=\"product-image-container ng-star-inserted\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"RV Furnace Guys","offers":[{"title":"Default Title","offer_id":47784337309937,"sku":null,"price":1335.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4941\/0289\/files\/DFMD30111.avif?v=1770575609"},{"product_id":"dometic™-dfmdh25111-rv-furnace-25-000-btu-lp-gas-bottom-discharge-12v-dc","title":"Dometic™ DFMDH25111 RV Furnace – 25,000 BTU – LP Gas – Bottom Discharge – 12V DC","description":"\u003ch1\u003eDometic™ DFMDH25111 RV Furnace – 25,000 BTU – LP Gas – Bottom Discharge – 12V DC\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eDFM Series | Hall Effect Sensor Model | Medium Size\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e DFMDH25111\u003cbr\u003e\u003cstrong\u003eSeries:\u003c\/strong\u003e DFM “H” Series\u003cbr\u003e\u003cstrong\u003eFuel Type:\u003c\/strong\u003e LP Gas (Propane)\u003cbr\u003e\u003cstrong\u003eBTU Output:\u003c\/strong\u003e 25,000 BTU\u003cbr\u003e\u003cstrong\u003eStage:\u003c\/strong\u003e Single Stage\u003cbr\u003e\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12 Volt DC\u003cbr\u003e\u003cstrong\u003eDischarge Type:\u003c\/strong\u003e Bottom Discharge\u003cbr\u003e\u003cstrong\u003eAccess Door \u0026amp; Thermostat Sold Separately\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cstrong\u003e2-Year Limited Manufacturer Warranty\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eDometic™ DFMDH25111\u003c\/strong\u003e is a high-efficiency \u003cstrong\u003e25,000 BTU LP gas RV furnace\u003c\/strong\u003e designed for medium-sized applications requiring bottom-discharge airflow.\u003c\/p\u003e\n\u003cp\u003eThis model is part of the advanced \u003cstrong\u003eDFM “H” Series\u003c\/strong\u003e, which features a \u003cstrong\u003eHall Effect sensor system\u003c\/strong\u003e — replacing the traditional mechanical sail switch used in older furnaces.\u003c\/p\u003e\n\u003cp\u003eInstead of relying on a paddle-style airflow switch, the Hall Effect system electronically monitors blower motor rotation to verify airflow before ignition. This provides:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFaster ignition sequencing\u003c\/li\u003e\n\u003cli\u003eImproved reliability\u003c\/li\u003e\n\u003cli\u003eFewer airflow-related service issues\u003c\/li\u003e\n\u003cli\u003eBetter performance in dusty or cold-weather environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOperating on 12 Volt DC, this furnace is ideal for modern RV installations and replacement applications requiring dependable propane heating.\u003c\/p\u003e\n\u003cp\u003e⚠ \u003cstrong\u003eImportant:\u003c\/strong\u003e Existing cut-out dimensions must be measured before replacement to ensure proper fit.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eKey Features\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003e25,000 BTU heating capacity\u003c\/li\u003e\n\u003cli\u003eLP gas (propane) operation\u003c\/li\u003e\n\u003cli\u003eSingle-stage heating performance\u003c\/li\u003e\n\u003cli\u003eBottom discharge airflow configuration\u003c\/li\u003e\n\u003cli\u003e12 Volt DC operation\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHall Effect airflow verification system (no mechanical sail switch)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eImproved ignition reliability vs traditional sail switch systems\u003c\/li\u003e\n\u003cli\u003eMedium-size installation footprint\u003c\/li\u003e\n\u003cli\u003eDesigned for modern RV heating systems\u003c\/li\u003e\n\u003cli\u003eAccess door sold separately\u003c\/li\u003e\n\u003cli\u003eThermostat sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch1\u003eSpecifications\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e DFMDH25111\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e DFM H Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBTU Rating:\u003c\/strong\u003e 25,000 BTU\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Type:\u003c\/strong\u003e LP Gas\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating Stage:\u003c\/strong\u003e Single Stage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12 Volt DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAirflow Discharge:\u003c\/strong\u003e Bottom\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 16-1\/2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 7 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 20 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAirflow Verification:\u003c\/strong\u003e Hall Effect Sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoft Start Technology:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess Door Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermostat Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch1\u003eWhy the Hall Effect System Matters\u003c\/h1\u003e\n\u003cp\u003eOlder furnaces use a mechanical sail switch that can:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStick\u003c\/li\u003e\n\u003cli\u003eGet dirty\u003c\/li\u003e\n\u003cli\u003eCause intermittent ignition\u003c\/li\u003e\n\u003cli\u003eRequire seasonal cleaning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe DFMDH25111 eliminates that design and uses an electronic Hall Effect sensor to monitor motor rotation directly. This reduces failure points and improves long-term reliability.\u003c\/p\u003e\n\u003cp\u003eThis is especially valuable for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOff-grid RV use\u003c\/li\u003e\n\u003cli\u003eCold-weather camping\u003c\/li\u003e\n\u003cli\u003eHigh-dust travel environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch1\u003eFrequently Asked Questions (FAQ)\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What does the “H” in DFMDH mean?\u003c\/strong\u003e\u003cbr\u003eA: It indicates the furnace uses a Hall Effect sensor system instead of a traditional sail switch.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this furnace use a sail switch?\u003c\/strong\u003e\u003cbr\u003eA: No. This model uses electronic airflow verification via a Hall Effect sensor.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What does Bottom Discharge mean?\u003c\/strong\u003e\u003cbr\u003eA: Heated air exits vertically downward into floor duct systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this a propane furnace?\u003c\/strong\u003e\u003cbr\u003eA: Yes. It operates on LP gas (propane).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is a thermostat included?\u003c\/strong\u003e\u003cbr\u003eA: No. A compatible 12V furnace thermostat must be purchased separately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does it include the access door?\u003c\/strong\u003e\u003cbr\u003eA: No. The exterior access door is sold separately.\u003c\/p\u003e","brand":"RV Furnace Guys","offers":[{"title":"Default Title","offer_id":47857593319665,"sku":null,"price":1298.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4941\/0289\/files\/MainPic1.png?v=1772398345"},{"product_id":"dometic™-dfmdh25121-rv-furnace-25-000-btu-lp-gas-bottom-discharge-12v-dc","title":"Dometic™ DFMDH25121 RV Furnace – 25,000 BTU – LP Gas – Bottom Discharge – 12V DC","description":"\u003ch1\u003eDometic™ DFMDH25121 RV Furnace – 25,000 BTU – LP Gas – Bottom Discharge – 12V DC\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eDFM Series | Hall Effect Sensor Model | Doorless Design | Medium Size\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e DFMDH25121\u003cbr\u003e\u003cstrong\u003eSeries:\u003c\/strong\u003e DFM “H” Series\u003cbr\u003e\u003cstrong\u003eFuel Type:\u003c\/strong\u003e LP Gas (Propane)\u003cbr\u003e\u003cstrong\u003eBTU Output:\u003c\/strong\u003e 25,000 BTU\u003cbr\u003e\u003cstrong\u003eStage:\u003c\/strong\u003e Single Stage\u003cbr\u003e\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12 Volt DC\u003cbr\u003e\u003cstrong\u003eDischarge Type:\u003c\/strong\u003e Bottom Discharge\u003cbr\u003e\u003cstrong\u003eThermostat Sold Separately\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eExterior Door Not Included (Doorless Model)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cstrong\u003e2-Year Limited Manufacturer Warranty\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eDometic™ DFMDH25121\u003c\/strong\u003e is a \u003cstrong\u003e25,000 BTU LP gas RV furnace\u003c\/strong\u003e from the advanced \u003cstrong\u003eDFM “H” Series\u003c\/strong\u003e, featuring an \u003cstrong\u003eelectronic Hall Effect airflow sensor\u003c\/strong\u003e and \u003cstrong\u003ebuilt-in Soft Start technology\u003c\/strong\u003e for improved electrical startup performance.\u003c\/p\u003e\n\u003cp\u003eThis version is a \u003cstrong\u003edoorless heater model\u003c\/strong\u003e, meaning \u003cstrong\u003ean exterior access door is not required\u003c\/strong\u003e for installation. Instead, service and access are performed from inside the RV or living space.\u003c\/p\u003e\n\u003cp\u003eThis doorless configuration makes the DFMDH25121 especially well-suited for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVans and van conversions\u003c\/li\u003e\n\u003cli\u003eSmall travel trailers\u003c\/li\u003e\n\u003cli\u003eTruck campers\u003c\/li\u003e\n\u003cli\u003eIce fishing houses\u003c\/li\u003e\n\u003cli\u003eCustom RV layouts with limited exterior wall space\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBefore ordering, always \u003cstrong\u003emeasure your existing furnace cut-out\u003c\/strong\u003e to ensure the unit will fit properly within your available space.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e25,000 BTU heating capacity\u003c\/li\u003e\n\u003cli\u003eLP gas (propane) operation\u003c\/li\u003e\n\u003cli\u003eSingle-stage heating performance\u003c\/li\u003e\n\u003cli\u003eBottom discharge airflow configuration\u003c\/li\u003e\n\u003cli\u003e12 Volt DC operation\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHall Effect airflow sensor (no mechanical sail switch)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eBuilt-in Soft Start for reduced electrical surge\u003c\/li\u003e\n\u003cli\u003eDoorless design (no exterior access door required)\u003c\/li\u003e\n\u003cli\u003eIdeal for compact or custom installs\u003c\/li\u003e\n\u003cli\u003eThermostat sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e DFMDH25121\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e DFM H Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBTU Rating:\u003c\/strong\u003e 25,000 BTU\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Type:\u003c\/strong\u003e LP Gas (Propane)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating Stage:\u003c\/strong\u003e Single Stage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12 Volt DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDischarge Configuration:\u003c\/strong\u003e Bottom\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 16-1\/2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 7 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 20 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAirflow Monitoring:\u003c\/strong\u003e Hall Effect Sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoft Start Technology:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Access Door:\u003c\/strong\u003e Not Required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermostat Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eDoorless Installation – Pros \u0026amp; Cons\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eDoorless Design Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo large exterior cut-out required\u003c\/strong\u003e — perfect for vans, truck campers, tiny houses, and custom builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible placement\u003c\/strong\u003e — this furnace can be mounted in multiple orientations and locations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimplified installation\u003c\/strong\u003e — fewer exterior modifications needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean RV exterior\u003c\/strong\u003e — no visible furnace access door on the sidewall.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eConsiderations (Cons)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterior access required for servicing\u003c\/strong\u003e — you must remove ceiling panels or interior trim to reach the furnace.\u003c\/li\u003e\n\u003cli\u003eNot ideal if you want \u003cstrong\u003eexternal maintenance access\u003c\/strong\u003e without entering the RV.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis design trade-off makes the DFMDH25121 one of the \u003cstrong\u003emost adaptable furnace solutions\u003c\/strong\u003e for non-traditional RV builds and limited exterior wall applications.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy Choose This Model?\u003c\/h2\u003e\n\u003cp\u003eThe DFMDH25121 combines traditional propane furnace power with modern electronics and installation flexibility. Key advantages include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHall Effect sensing for reliable ignition\u003c\/li\u003e\n\u003cli\u003eSoft Start technology for reduced electrical demand\u003c\/li\u003e\n\u003cli\u003eCompact footprint for tight installations\u003c\/li\u003e\n\u003cli\u003eNo need for an exterior access door\u003c\/li\u003e\n\u003cli\u003eIdeal for custom RV, overland, or conversion projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eFrequently Asked Questions (FAQ)\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What does “Hall Effect sensor” mean?\u003c\/strong\u003e\u003cbr\u003eA: The Hall Effect system electronically verifies blower airflow by detecting motor rotation, eliminating the need for a mechanical sail switch.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is this model “doorless”?\u003c\/strong\u003e\u003cbr\u003eA: It’s designed to install without an exterior furnace access door — perfect when you don’t want or can’t cut a large hole through your sidewall.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Where do I service the furnace?\u003c\/strong\u003e\u003cbr\u003eA: From inside the RV; panels or trim must be removed to access the heater for service.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this include a thermostat?\u003c\/strong\u003e\u003cbr\u003eA: No. A compatible 12V furnace thermostat must be purchased separately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will this fit a standard furnace cut-out?\u003c\/strong\u003e\u003cbr\u003eA: It uses the same footprint as other 25,000 BTU DFM models, but always \u003cstrong\u003emeasure your cut-out\u003c\/strong\u003e before ordering.\u003c\/p\u003e","brand":"RV Furnace Guys","offers":[{"title":"Default Title","offer_id":47857597939953,"sku":null,"price":1199.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4941\/0289\/files\/251211.png?v=1772399406"},{"product_id":"dometic™-dfmdh30121-rv-furnace-30-000-btu-lp-gas-bottom-discharge-12v-dc","title":"Dometic™ DFMDH30121 RV Furnace – 30,000 BTU – LP Gas – Bottom Discharge – 12V DC","description":"\u003ch1\u003eDometic™ DFMDH30121 RV Furnace – 30,000 BTU – LP Gas – Bottom Discharge – 12V DC\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eDFM Series | Hall Effect Sensor | Doorless Design | Medium Size\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e DFMDH30121\u003cbr\u003e\u003cstrong\u003eSeries:\u003c\/strong\u003e DFM “H” Series\u003cbr\u003e\u003cstrong\u003eFuel Type:\u003c\/strong\u003e LP Gas (Propane)\u003cbr\u003e\u003cstrong\u003eBTU Output:\u003c\/strong\u003e 30,000 BTU\u003cbr\u003e\u003cstrong\u003eStage:\u003c\/strong\u003e Single Stage\u003cbr\u003e\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12 Volt DC\u003cbr\u003e\u003cstrong\u003eDischarge Type:\u003c\/strong\u003e Bottom Discharge\u003cbr\u003e\u003cstrong\u003eGas Connection:\u003c\/strong\u003e Rear Gas Manifold\u003cbr\u003e\u003cstrong\u003eExterior Door:\u003c\/strong\u003e Not Required (Doorless Model)\u003cbr\u003e\u003cstrong\u003eThermostat Sold Separately\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2-Year Limited Manufacturer Warranty\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eDometic™ DFMDH30121\u003c\/strong\u003e is a powerful \u003cstrong\u003e30,000 BTU LP gas RV furnace\u003c\/strong\u003e designed for medium-sized heating applications requiring bottom-discharge ducting and flexible installation.\u003c\/p\u003e\n\u003cp\u003eThis model is part of Dometic’s advanced \u003cstrong\u003eDFM “H” Series\u003c\/strong\u003e, which features an \u003cstrong\u003eelectronic Hall Effect airflow verification system\u003c\/strong\u003e instead of a traditional mechanical sail switch. The Hall sensor electronically monitors blower motor rotation before ignition, improving reliability and reducing service issues caused by stuck or contaminated sail switches.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eDFMDH30121 is a doorless furnace\u003c\/strong\u003e, meaning an exterior access door is not required for installation. This eliminates the need to cut a large exterior opening in your RV sidewall — making it one of the easiest furnaces to install in:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVan conversions\u003c\/li\u003e\n\u003cli\u003eSmall travel trailers\u003c\/li\u003e\n\u003cli\u003eTruck campers\u003c\/li\u003e\n\u003cli\u003eTiny homes\u003c\/li\u003e\n\u003cli\u003eIce fishing houses\u003c\/li\u003e\n\u003cli\u003eCustom RV builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e⚠ \u003cstrong\u003eImportant:\u003c\/strong\u003e Always measure your existing furnace cut-out to ensure proper fit before ordering.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eKey Features\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003e30,000 BTU heating capacity\u003c\/li\u003e\n\u003cli\u003eLP gas (propane) operation\u003c\/li\u003e\n\u003cli\u003eSingle-stage heating\u003c\/li\u003e\n\u003cli\u003eBottom discharge airflow configuration\u003c\/li\u003e\n\u003cli\u003e12 Volt DC operation\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHall Effect airflow verification system (no mechanical sail switch)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eBuilt-In Soft Start technology\u003c\/li\u003e\n\u003cli\u003eRear gas manifold connection\u003c\/li\u003e\n\u003cli\u003eDoorless installation design\u003c\/li\u003e\n\u003cli\u003eThermostat sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch1\u003eSpecifications\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e DFMDH30121\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e DFM H Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBTU Rating:\u003c\/strong\u003e 30,000 BTU\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Type:\u003c\/strong\u003e LP Gas\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating Stage:\u003c\/strong\u003e Single Stage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12 Volt DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDischarge Type:\u003c\/strong\u003e Bottom\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas Connection:\u003c\/strong\u003e Rear Manifold\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 16-1\/2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 7 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 20 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAirflow Monitoring:\u003c\/strong\u003e Hall Effect Sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoft Start:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Access Door Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermostat Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch1\u003eDoorless Installation – Pros \u0026amp; Cons\u003c\/h1\u003e\n\u003ch3\u003eBenefits of Doorless Installation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNo large cut required in sidewall\u003c\/li\u003e\n\u003cli\u003eCleaner RV exterior appearance\u003c\/li\u003e\n\u003cli\u003eMore flexible mounting options\u003c\/li\u003e\n\u003cli\u003eEasier installation in compact builds\u003c\/li\u003e\n\u003cli\u003eIdeal for van conversions and custom layouts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e⚠ Considerations\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eServicing must be done from inside the RV\u003c\/li\u003e\n\u003cli\u003eNo exterior service access panel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis design makes the DFMDH30121 extremely versatile for non-traditional builds and space-constrained installations.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eWhy Choose the DFM “H” Series?\u003c\/h1\u003e\n\u003cp\u003eTraditional RV furnaces use mechanical sail switches to confirm airflow. Over time, these can stick, get dirty, or cause intermittent ignition failures.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eHall Effect system\u003c\/strong\u003e in the DFMDH30121:\u003c\/p\u003e\n\u003cp\u003e✔ Electronically verifies blower rotation\u003cbr\u003e✔ Improves ignition reliability\u003cbr\u003e✔ Reduces maintenance\u003cbr\u003e✔ Performs better in dusty or cold conditions\u003c\/p\u003e\n\u003cp\u003eCombined with Soft Start technology, it reduces electrical surge during startup — helping protect RV wiring and batteries.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eFrequently Asked Questions (FAQ)\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What does the “H” stand for?\u003c\/strong\u003e\u003cbr\u003eA: It indicates the furnace uses a Hall Effect airflow sensor instead of a mechanical sail switch.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this model require an exterior furnace door?\u003c\/strong\u003e\u003cbr\u003eA: No. This is a doorless design.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Where is the gas connection located?\u003c\/strong\u003e\u003cbr\u003eA: This model uses a rear gas manifold configuration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does it include a thermostat?\u003c\/strong\u003e\u003cbr\u003eA: No. A compatible 12V furnace thermostat is required and sold separately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What does Bottom Discharge mean?\u003c\/strong\u003e\u003cbr\u003eA: Heated air flows downward into floor ducting systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this compatible with traditional DFM cut-outs?\u003c\/strong\u003e\u003cbr\u003eA: It shares the same physical footprint as other medium DFM models, but always measure your cut-out before ordering.\u003c\/p\u003e","brand":"RV Furnace Guys","offers":[{"title":"Default Title","offer_id":47857599480049,"sku":null,"price":1269.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4941\/0289\/files\/301211.png?v=1772399752"},{"product_id":"dometic™-dfmdh35111-rv-furnace-35-000-btu-lp-gas-bottom-discharge-12v-dc","title":"Dometic™ DFMDH35111 RV Furnace – 35,000 BTU – LP Gas – Bottom Discharge – 12V DC","description":"\u003ch1\u003eDometic™ DFMDH35111 RV Furnace – 35,000 BTU – LP Gas – Bottom Discharge – 12V DC\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eDFM Series | Hall Effect Sensor | Medium Size | 2-Year Warranty\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e DFMDH35111\u003cbr\u003e\u003cstrong\u003eSeries:\u003c\/strong\u003e DFM “H” Series\u003cbr\u003e\u003cstrong\u003eFuel Type:\u003c\/strong\u003e LP Gas (Propane)\u003cbr\u003e\u003cstrong\u003eBTU Output:\u003c\/strong\u003e 35,000 BTU\u003cbr\u003e\u003cstrong\u003eStage:\u003c\/strong\u003e Single Stage\u003cbr\u003e\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12 Volt DC\u003cbr\u003e\u003cstrong\u003eDischarge Type:\u003c\/strong\u003e Bottom Discharge\u003cbr\u003e\u003cstrong\u003eAccess Door Required (Sold Separately)\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eThermostat Sold Separately\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eDometic™ DFMDH35111\u003c\/strong\u003e is a high-output \u003cstrong\u003e35,000 BTU LP gas RV furnace\u003c\/strong\u003e designed for medium-sized installations requiring bottom-discharge airflow and dependable cold-weather performance.\u003c\/p\u003e\n\u003cp\u003ePart of Dometic’s advanced \u003cstrong\u003eDFM “H” Series\u003c\/strong\u003e, this model features a modern \u003cstrong\u003eHall Effect airflow verification system\u003c\/strong\u003e, replacing the traditional mechanical sail switch. The Hall sensor electronically monitors blower motor rotation to confirm proper airflow before ignition — improving reliability and reducing common service issues.\u003c\/p\u003e\n\u003cp\u003eThe DFMDH35111 also includes \u003cstrong\u003eBuilt-In Soft Start technology\u003c\/strong\u003e, reducing startup electrical surge and placing less strain on RV wiring and battery systems.\u003c\/p\u003e\n\u003cp\u003e⚠ \u003cstrong\u003eImportant:\u003c\/strong\u003e This model requires the purchase of a compatible exterior access door (sold separately).\u003cbr\u003e⚠ Always measure your existing cut-out to ensure proper fit before ordering.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eKey Features\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003e35,000 BTU heating capacity\u003c\/li\u003e\n\u003cli\u003eLP gas (propane) operation\u003c\/li\u003e\n\u003cli\u003eSingle-stage heating performance\u003c\/li\u003e\n\u003cli\u003eBottom discharge airflow configuration\u003c\/li\u003e\n\u003cli\u003e12 Volt DC operation\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHall Effect airflow verification (no sail switch)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eBuilt-In Soft Start technology\u003c\/li\u003e\n\u003cli\u003eHigh-output heating for larger RV spaces\u003c\/li\u003e\n\u003cli\u003eMedium-size footprint\u003c\/li\u003e\n\u003cli\u003eCompatible access door required (sold separately)\u003c\/li\u003e\n\u003cli\u003eThermostat sold separately\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e2-Year Manufacturer Warranty\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch1\u003eSpecifications\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e DFMDH35111\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e DFM H Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBTU Rating:\u003c\/strong\u003e 35,000 BTU\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Type:\u003c\/strong\u003e LP Gas\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating Stage:\u003c\/strong\u003e Single Stage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12 Volt DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAirflow Configuration:\u003c\/strong\u003e Bottom Discharge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 16-1\/2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 7 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 20 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAirflow Monitoring:\u003c\/strong\u003e Hall Effect Sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoft Start:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Access Door Included:\u003c\/strong\u003e No (Required for installation)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermostat Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 2-Year Limited Manufacturer Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch1\u003eWhy Choose the DFM “H” Series?\u003c\/h1\u003e\n\u003cp\u003eOlder RV furnaces rely on mechanical sail switches to verify airflow. Over time, these can:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBecome dirty or stick\u003c\/li\u003e\n\u003cli\u003eCause intermittent ignition failures\u003c\/li\u003e\n\u003cli\u003eRequire seasonal cleaning or replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe \u003cstrong\u003eHall Effect system\u003c\/strong\u003e in the DFMDH35111 eliminates that mechanical component by electronically monitoring blower motor rotation — resulting in:\u003c\/p\u003e\n\u003cp\u003e✔ Improved ignition consistency\u003cbr\u003e✔ Reduced service issues\u003cbr\u003e✔ Better performance in cold or dusty environments\u003cbr\u003e✔ Enhanced long-term reliability\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eInstallation Notes\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003eThis model \u003cstrong\u003erequires a compatible exterior access door\u003c\/strong\u003e, purchased separately.\u003c\/li\u003e\n\u003cli\u003eBottom discharge design directs heated air downward into floor duct systems.\u003c\/li\u003e\n\u003cli\u003eAlways verify cut-out dimensions before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch1\u003eFrequently Asked Questions (FAQ)\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What does the “H” in DFMDH mean?\u003c\/strong\u003e\u003cbr\u003eA: It designates a Hall Effect airflow verification system instead of a mechanical sail switch.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this furnace include an access door?\u003c\/strong\u003e\u003cbr\u003eA: No. A compatible exterior access door must be purchased separately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this furnace propane?\u003c\/strong\u003e\u003cbr\u003eA: Yes. It operates on LP gas (propane).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this model use 12V DC?\u003c\/strong\u003e\u003cbr\u003eA: Yes. It operates on standard 12 Volt DC power.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does it include a thermostat?\u003c\/strong\u003e\u003cbr\u003eA: No. A compatible furnace thermostat must be purchased separately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What warranty is included?\u003c\/strong\u003e\u003cbr\u003eA: This furnace includes a 2-year limited manufacturer warranty.\u003c\/p\u003e","brand":"RV Furnace Guys","offers":[{"title":"Default Title","offer_id":47857601380593,"sku":null,"price":1399.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4941\/0289\/files\/351111.png?v=1772400083"},{"product_id":"dometic™-dfmdh35121-rv-furnace-35-000-btu-lp-gas-bottom-discharge-12v-dc","title":"Dometic™ DFMDH35121 RV Furnace – 35,000 BTU – LP Gas – Bottom Discharge – 12V DC","description":"\u003ch1\u003eDometic™ DFMDH35121 RV Furnace – 35,000 BTU – LP Gas – Bottom Discharge – 12V DC\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eDFM Series | Hall Effect Sensor | Doorless Model | 2-Year Warranty\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e DFMDH35121\u003cbr\u003e\u003cstrong\u003eSeries:\u003c\/strong\u003e DFM “H” Series\u003cbr\u003e\u003cstrong\u003eFuel Type:\u003c\/strong\u003e LP Gas (Propane)\u003cbr\u003e\u003cstrong\u003eBTU Output:\u003c\/strong\u003e 35,000 BTU\u003cbr\u003e\u003cstrong\u003eStage:\u003c\/strong\u003e Single Stage\u003cbr\u003e\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12 Volt DC\u003cbr\u003e\u003cstrong\u003eDischarge Type:\u003c\/strong\u003e Bottom Discharge\u003cbr\u003e\u003cstrong\u003eGas Connection:\u003c\/strong\u003e Rear Gas Manifold\u003cbr\u003e\u003cstrong\u003eExterior Door:\u003c\/strong\u003e Not Required (Doorless Model)\u003cbr\u003e\u003cstrong\u003eThermostat Sold Separately\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eDometic™ DFMDH35121\u003c\/strong\u003e is a high-output \u003cstrong\u003e35,000 BTU LP gas RV furnace\u003c\/strong\u003e designed for medium-sized heating applications where maximum flexibility and installation simplicity are required.\u003c\/p\u003e\n\u003cp\u003eThis model is part of the advanced \u003cstrong\u003eDFM “H” Series\u003c\/strong\u003e, featuring a modern \u003cstrong\u003eHall Effect airflow verification system\u003c\/strong\u003e that replaces the traditional mechanical sail switch. The Hall sensor electronically monitors blower motor rotation to confirm proper airflow before ignition — improving reliability and reducing common airflow-related service issues.\u003c\/p\u003e\n\u003cp\u003eUnlike standard furnace models, the DFMDH35121 is a \u003cstrong\u003edoorless configuration\u003c\/strong\u003e, meaning no exterior access door is required for installation. This eliminates the need to cut a large hole in the sidewall of your RV.\u003c\/p\u003e\n\u003cp\u003eThis makes the DFMDH35121 one of the easiest furnaces to install in:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVan conversions\u003c\/li\u003e\n\u003cli\u003eSmall travel trailers\u003c\/li\u003e\n\u003cli\u003eTruck campers\u003c\/li\u003e\n\u003cli\u003eOverland builds\u003c\/li\u003e\n\u003cli\u003eTiny homes\u003c\/li\u003e\n\u003cli\u003eIce fishing houses\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e⚠ \u003cstrong\u003eImportant:\u003c\/strong\u003e Always measure your existing cut-out before ordering to ensure proper fitment.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eKey Features\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003e35,000 BTU heating capacity\u003c\/li\u003e\n\u003cli\u003eLP gas (propane) operation\u003c\/li\u003e\n\u003cli\u003eSingle-stage heating performance\u003c\/li\u003e\n\u003cli\u003eBottom discharge airflow configuration\u003c\/li\u003e\n\u003cli\u003e12 Volt DC operation\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHall Effect airflow verification (no mechanical sail switch)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eBuilt-In Soft Start technology\u003c\/li\u003e\n\u003cli\u003eRear gas manifold configuration\u003c\/li\u003e\n\u003cli\u003eDoorless design (no exterior access door required)\u003c\/li\u003e\n\u003cli\u003eFlexible installation orientation\u003c\/li\u003e\n\u003cli\u003eThermostat sold separately\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e2-Year Limited Manufacturer Warranty\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch1\u003eSpecifications\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e DFMDH35121\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e DFM H Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBTU Rating:\u003c\/strong\u003e 35,000 BTU\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Type:\u003c\/strong\u003e LP Gas\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating Stage:\u003c\/strong\u003e Single Stage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12 Volt DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAirflow Configuration:\u003c\/strong\u003e Bottom Discharge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas Connection:\u003c\/strong\u003e Rear Manifold\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 16-1\/2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 7 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 20 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAirflow Monitoring:\u003c\/strong\u003e Hall Effect Sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoft Start:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Door Included:\u003c\/strong\u003e No (Doorless Model)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermostat Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 2-Year Limited Manufacturer Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch1\u003eDoorless Installation – Pros \u0026amp; Cons\u003c\/h1\u003e\n\u003ch3\u003eBenefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNo large exterior wall cut required\u003c\/li\u003e\n\u003cli\u003eCleaner RV exterior appearance\u003c\/li\u003e\n\u003cli\u003eGreater flexibility in mounting options\u003c\/li\u003e\n\u003cli\u003eEasier installation for custom builds\u003c\/li\u003e\n\u003cli\u003eIdeal for compact or specialty RV layouts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e⚠ Considerations\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFurnace must be serviced from inside the RV\u003c\/li\u003e\n\u003cli\u003eNo exterior access panel for maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor many van and custom builds, avoiding a large exterior cut is a major installation advantage.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eWhy Choose the DFM “H” Series?\u003c\/h1\u003e\n\u003cp\u003eTraditional RV furnaces use mechanical sail switches that can:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStick or collect debris\u003c\/li\u003e\n\u003cli\u003eCause intermittent ignition failures\u003c\/li\u003e\n\u003cli\u003eRequire cleaning or replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe \u003cstrong\u003eHall Effect system\u003c\/strong\u003e in the DFMDH35121 electronically verifies airflow by monitoring motor rotation, resulting in:\u003c\/p\u003e\n\u003cp\u003e✔ Improved ignition reliability\u003cbr\u003e✔ Reduced maintenance\u003cbr\u003e✔ Better cold-weather performance\u003cbr\u003e✔ Fewer airflow-related faults\u003c\/p\u003e\n\u003cp\u003eCombined with Soft Start technology, it reduces startup surge and protects your RV’s 12V electrical system.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eFrequently Asked Questions (FAQ)\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What does the “H” in DFMDH mean?\u003c\/strong\u003e\u003cbr\u003eA: It indicates a Hall Effect airflow verification system rather than a mechanical sail switch.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this furnace require an exterior access door?\u003c\/strong\u003e\u003cbr\u003eA: No. This is a doorless model.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Where is the gas connection located?\u003c\/strong\u003e\u003cbr\u003eA: It uses a rear gas manifold configuration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this propane only?\u003c\/strong\u003e\u003cbr\u003eA: Yes, it operates on LP gas (propane).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is a thermostat included?\u003c\/strong\u003e\u003cbr\u003eA: No. A compatible 12V furnace thermostat must be purchased separately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What warranty is included?\u003c\/strong\u003e\u003cbr\u003eA: This furnace includes a 2-year limited manufacturer warranty.\u003c\/p\u003e","brand":"RV Furnace Guys","offers":[{"title":"Default Title","offer_id":47857606623473,"sku":null,"price":1549.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4941\/0289\/files\/351211.png?v=1772400431"},{"product_id":"dometic™-38362-rv-furnace-model-dfla40211-40-000-btu-lp-natural-gas-120v-ac","title":"Dometic™ 38362 RV Furnace – Model DFLA40211 – 40,000 BTU – LP \/ Natural Gas – 120V AC","description":"\u003ch1\u003e Dometic™ 38362 RV Furnace – Model DFLA40211 – 40,000 BTU – LP \/ Natural Gas – 120V AC\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eDFL Series | Single Stage | Bottom Discharge | Large Size\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 38362\u003cbr\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e DFLA40211\u003cbr\u003e\u003cstrong\u003eSeries:\u003c\/strong\u003e DFL (Large Series)\u003cbr\u003e\u003cstrong\u003eFuel Type:\u003c\/strong\u003e LP Gas \/ Natural Gas Compatible\u003cbr\u003e\u003cstrong\u003eBTU Output:\u003c\/strong\u003e 40,000 BTU\u003cbr\u003e\u003cstrong\u003eHeating Stage:\u003c\/strong\u003e Single Stage\u003cbr\u003e\u003cstrong\u003eVoltage:\u003c\/strong\u003e 120 Volt AC\u003cbr\u003e\u003cstrong\u003eDischarge Type:\u003c\/strong\u003e Bottom Discharge\u003cbr\u003e\u003cstrong\u003eAccess Door Required – #33058 (Sold Separately)\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eWall Thermostat Required (Sold Separately)\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eDometic™ 38362 (Model DFLA40211)\u003c\/strong\u003e is a powerful \u003cstrong\u003e40,000 BTU single-stage RV furnace\u003c\/strong\u003e designed for large coach applications requiring strong and consistent bottom-discharge heating.\u003c\/p\u003e\n\u003cp\u003ePart of the \u003cstrong\u003eDFL Series\u003c\/strong\u003e, this furnace operates on \u003cstrong\u003e120 Volt AC power\u003c\/strong\u003e and supports LP gas or Natural Gas configurations depending on installation setup.\u003c\/p\u003e\n\u003cp\u003eThis is a \u003cstrong\u003esingle-stage heating system\u003c\/strong\u003e, meaning it operates at full rated BTU output when heating is called for — delivering reliable, straightforward performance for larger fifth wheels, park models, and destination trailers.\u003c\/p\u003e\n\u003cp\u003e⚠ \u003cstrong\u003eImportant:\u003c\/strong\u003e This furnace requires exterior access door, sold separately.\u003cbr\u003e⚠ A compatible wall thermostat is also required and sold separately.\u003cbr\u003e⚠ Always measure your existing cut-out before ordering.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eKey Features\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003e40,000 BTU high-output performance\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSingle-stage heating system\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eLP Gas or Natural Gas compatible\u003c\/li\u003e\n\u003cli\u003e120 Volt AC operation\u003c\/li\u003e\n\u003cli\u003eBottom discharge airflow configuration\u003c\/li\u003e\n\u003cli\u003eLarge-size furnace chassis\u003c\/li\u003e\n\u003cli\u003eDesigned for higher heat demand applications\u003c\/li\u003e\n\u003cli\u003eRequires access door (sold separately)\u003c\/li\u003e\n\u003cli\u003eRequires wall thermostat (sold separately)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch1\u003eSpecifications\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 38362\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e DFLA40211\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e DFL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBTU Rating:\u003c\/strong\u003e 40,000 BTU\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating Stage:\u003c\/strong\u003e Single Stage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Type:\u003c\/strong\u003e LP \/ Natural Gas\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 120 Volt AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDischarge Configuration:\u003c\/strong\u003e Bottom\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 16-1\/2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 9 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 20 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Door Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermostat Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch1\u003eInstallation Notes\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003eBottom discharge integrates into floor duct systems\u003c\/li\u003e\n\u003cli\u003eExterior access door is required for proper venting and combustion airflow\u003c\/li\u003e\n\u003cli\u003eConfirm gas type configuration before installation\u003c\/li\u003e\n\u003cli\u003eMeasure existing cut-out dimensions for compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch1\u003eFrequently Asked Questions (FAQ)\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this a two-stage furnace?\u003c\/strong\u003e\u003cbr\u003eA: No. This is a \u003cstrong\u003esingle-stage furnace\u003c\/strong\u003e that operates at full 40,000 BTU output when activated.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this include the access door?\u003c\/strong\u003e\u003cbr\u003eA: No. Exterior access door must be purchased separately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this propane or natural gas?\u003c\/strong\u003e\u003cbr\u003eA: It can operate on LP gas or natural gas depending on configuration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What voltage does it use?\u003c\/strong\u003e\u003cbr\u003eA: 120 Volt AC.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What does bottom discharge mean?\u003c\/strong\u003e\u003cbr\u003eA: Heated air flows downward into the RV’s floor duct system.\u003c\/p\u003e","brand":"RV Furnace Guys","offers":[{"title":"Default Title","offer_id":47857608261873,"sku":null,"price":2078.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4941\/0289\/files\/38362.png?v=1772400705"},{"product_id":"dometic™-dfsdh20111-rv-furnace-18-000-btu-lp-gas-electric-12v-dc","title":"Dometic™ DFSDH20111 RV Furnace – 18,000 BTU – LP Gas \/ Electric – 12V DC","description":"\u003ch1\u003eDometic™ DFSDH20111 RV Furnace – 18,000 BTU – LP Gas \/ Electric – 12V DC\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eDFS Series | Hall Effect Sensor | Small Size | 2-Year Warranty\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e DFSDH20111\u003cbr\u003e\u003cstrong\u003eSeries:\u003c\/strong\u003e DFS “H” Series\u003cbr\u003e\u003cstrong\u003eFuel Type:\u003c\/strong\u003e LP Gas (Primary) \/ 12V DC Electric Controls\u003cbr\u003e\u003cstrong\u003eBTU Output:\u003c\/strong\u003e 18,000 BTU\u003cbr\u003e\u003cstrong\u003eStage:\u003c\/strong\u003e Single Stage\u003cbr\u003e\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12 Volt DC\u003cbr\u003e\u003cstrong\u003eDucting:\u003c\/strong\u003e Side or Bottom Discharge\u003cbr\u003e\u003cstrong\u003eAccess Doors \u0026amp; Thermostat Sold Separately\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eDometic™ DFSDH20111\u003c\/strong\u003e is a compact \u003cstrong\u003e18,000 BTU single-stage RV furnace\u003c\/strong\u003e designed for smaller RVs, campers, van conversions, and specialty builds requiring efficient heating in a tight installation space.\u003c\/p\u003e\n\u003cp\u003eThis model belongs to the modern \u003cstrong\u003eDFS “H” Series\u003c\/strong\u003e, featuring a \u003cstrong\u003eHall Effect airflow verification system\u003c\/strong\u003e that replaces the traditional mechanical sail switch. Instead of using a paddle-style airflow switch, the Hall sensor electronically monitors blower motor rotation before ignition — improving reliability and reducing maintenance.\u003c\/p\u003e\n\u003cp\u003eWith flexible \u003cstrong\u003eside or bottom ducting\u003c\/strong\u003e, the DFSDH20111 offers adaptable installation options for small spaces where airflow routing is limited.\u003c\/p\u003e\n\u003cp\u003e⚠ \u003cstrong\u003eImportant:\u003c\/strong\u003e Access doors and thermostat are sold separately.\u003cbr\u003e⚠ Always measure your existing furnace cut-out before ordering to ensure proper fit.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eKey Features\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003e18,000 BTU heating capacity\u003c\/li\u003e\n\u003cli\u003eSingle-stage heating operation\u003c\/li\u003e\n\u003cli\u003eLP gas combustion with 12V DC electrical control\u003c\/li\u003e\n\u003cli\u003eHall Effect airflow verification (no mechanical sail switch)\u003c\/li\u003e\n\u003cli\u003eSide or bottom ducting configuration\u003c\/li\u003e\n\u003cli\u003eCompact small-chassis design\u003c\/li\u003e\n\u003cli\u003eIdeal for vans, truck campers, small trailers\u003c\/li\u003e\n\u003cli\u003eAccess doors sold separately\u003c\/li\u003e\n\u003cli\u003eThermostat sold separately\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e2-Year Limited Manufacturer Warranty\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch1\u003eSpecifications\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e DFSDH20111\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e DFS H Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBTU Rating:\u003c\/strong\u003e 18,000 BTU\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating Stage:\u003c\/strong\u003e Single Stage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Type:\u003c\/strong\u003e LP Gas\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical System:\u003c\/strong\u003e 12 Volt DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDucting:\u003c\/strong\u003e Side or Bottom\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 12 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 7 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 20 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAirflow Monitoring:\u003c\/strong\u003e Hall Effect Sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Access Door Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermostat Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 2-Year Limited Manufacturer Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch1\u003eWhy Choose the DFS “H” Series?\u003c\/h1\u003e\n\u003cp\u003eOlder small RV furnaces use mechanical sail switches that can:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAccumulate debris\u003c\/li\u003e\n\u003cli\u003eStick or fail intermittently\u003c\/li\u003e\n\u003cli\u003ePrevent ignition\u003c\/li\u003e\n\u003cli\u003eRequire periodic cleaning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe DFSDH20111 uses an \u003cstrong\u003eelectronic Hall Effect sensor\u003c\/strong\u003e to confirm blower operation, resulting in:\u003c\/p\u003e\n\u003cp\u003e✔ More reliable ignition\u003cbr\u003e✔ Reduced maintenance\u003cbr\u003e✔ Better cold-weather performance\u003cbr\u003e✔ Improved long-term durability\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eIdeal Applications\u003c\/h1\u003e\n\u003cp\u003eThe DFSDH20111 is ideal for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVan conversions\u003c\/li\u003e\n\u003cli\u003eCompact travel trailers\u003c\/li\u003e\n\u003cli\u003eTruck campers\u003c\/li\u003e\n\u003cli\u003eOverland builds\u003c\/li\u003e\n\u003cli\u003eIce fishing houses\u003c\/li\u003e\n\u003cli\u003eTiny homes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIts small footprint makes it perfect for tight installation cavities where larger furnaces won’t fit.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1\u003eFrequently Asked Questions (FAQ)\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What does the “H” stand for?\u003c\/strong\u003e\u003cbr\u003eA: The “H” indicates the furnace uses a Hall Effect airflow verification system rather than a mechanical sail switch.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this a propane furnace?\u003c\/strong\u003e\u003cbr\u003eA: Yes, it operates on LP gas with 12V DC electrical control.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can it be ducted from the side or bottom?\u003c\/strong\u003e\u003cbr\u003eA: Yes, this model supports side or bottom ducting for flexible installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are access doors included?\u003c\/strong\u003e\u003cbr\u003eA: No. Compatible access doors must be purchased separately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What warranty does it carry?\u003c\/strong\u003e\u003cbr\u003eA: This furnace includes a 2-year limited manufacturer warranty.\u003c\/p\u003e","brand":"RV Furnace Guys","offers":[{"title":"Default Title","offer_id":47857610555633,"sku":null,"price":1189.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4941\/0289\/files\/DFSDH201111.png?v=1772401349"},{"product_id":"dometic™-dfsdh20121-rv-furnace-20-000-btu-lp-gas-12v-dc","title":"Dometic™ DFSDH20121 RV Furnace – 20,000 BTU – LP Gas – 12V DC","description":"\u003ch1 data-start=\"217\" data-end=\"282\"\u003eDometic™ DFSDH20121 RV Furnace – 20,000 BTU – LP Gas – 12V DC\u003c\/h1\u003e\n\u003cp data-start=\"283\" data-end=\"378\"\u003e\u003cstrong data-start=\"283\" data-end=\"378\"\u003eDFS Series | Hall Effect Sensor | Outside Valve Manifold | Doorless Model | 2-Year Warranty\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"380\" data-end=\"762\"\u003e\u003cstrong data-start=\"380\" data-end=\"390\"\u003eModel:\u003c\/strong\u003e DFSDH20121\u003cbr data-start=\"401\" data-end=\"404\"\u003e\u003cstrong data-start=\"404\" data-end=\"415\"\u003eSeries:\u003c\/strong\u003e DFS “H” Series\u003cbr data-start=\"430\" data-end=\"433\"\u003e\u003cstrong data-start=\"433\" data-end=\"447\"\u003eFuel Type:\u003c\/strong\u003e LP Gas (Propane)\u003cbr data-start=\"464\" data-end=\"467\"\u003e\u003cstrong data-start=\"467\" data-end=\"482\"\u003eBTU Output:\u003c\/strong\u003e 20,000 BTU\u003cbr data-start=\"493\" data-end=\"496\"\u003e\u003cstrong data-start=\"496\" data-end=\"514\"\u003eHeating Stage:\u003c\/strong\u003e Single Stage\u003cbr data-start=\"527\" data-end=\"530\"\u003e\u003cstrong data-start=\"530\" data-end=\"542\"\u003eVoltage:\u003c\/strong\u003e 12 Volt DC\u003cbr data-start=\"553\" data-end=\"556\"\u003e\u003cstrong data-start=\"556\" data-end=\"568\"\u003eDucting:\u003c\/strong\u003e Side or Bottom Discharge\u003cbr data-start=\"593\" data-end=\"596\"\u003e\u003cstrong data-start=\"596\" data-end=\"614\"\u003eConfiguration:\u003c\/strong\u003e Outside Valve Manifold \/ Less Door\u003cbr data-start=\"649\" data-end=\"652\"\u003e\u003cstrong data-start=\"652\" data-end=\"676\"\u003eElectronic Ignition:\u003c\/strong\u003e Yes\u003cbr data-start=\"680\" data-end=\"683\"\u003e\u003cstrong data-start=\"683\" data-end=\"701\"\u003eVent Assembly:\u003c\/strong\u003e Not Included\u003cbr data-start=\"714\" data-end=\"717\"\u003e\u003cstrong data-start=\"717\" data-end=\"762\"\u003eAccess Doors \u0026amp; Thermostat Sold Separately\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"764\" data-end=\"767\"\u003e\n\u003ch2 data-start=\"769\" data-end=\"788\"\u003eProduct Overview\u003c\/h2\u003e\n\u003cp data-start=\"790\" data-end=\"998\"\u003eThe \u003cstrong data-start=\"794\" data-end=\"817\"\u003eDometic™ DFSDH20121\u003c\/strong\u003e is a compact \u003cstrong data-start=\"831\" data-end=\"876\"\u003e20,000 BTU single-stage LP gas RV furnace\u003c\/strong\u003e designed for small RVs, van conversions, truck campers, and specialty builds requiring efficient heating in tight spaces.\u003c\/p\u003e\n\u003cp data-start=\"1000\" data-end=\"1318\"\u003eThis model is part of the modern \u003cstrong data-start=\"1033\" data-end=\"1051\"\u003eDFS “H” Series\u003c\/strong\u003e, utilizing an advanced \u003cstrong data-start=\"1075\" data-end=\"1118\"\u003eHall Effect airflow verification system\u003c\/strong\u003e instead of a traditional mechanical sail switch. The Hall sensor electronically monitors blower motor rotation prior to ignition, improving reliability and minimizing common airflow-related failures.\u003c\/p\u003e\n\u003cp data-start=\"1320\" data-end=\"1626\"\u003eThe DFSDH20121 features an \u003cstrong data-start=\"1347\" data-end=\"1399\"\u003eoutside valve manifold (less door configuration)\u003c\/strong\u003e, meaning it does not include an exterior access door or vent assembly. This allows greater installation flexibility and eliminates the need for a large sidewall cut-out — ideal for custom builds and non-traditional RV layouts.\u003c\/p\u003e\n\u003cp data-start=\"1628\" data-end=\"1789\"\u003e⚠ \u003cstrong data-start=\"1630\" data-end=\"1644\"\u003eImportant:\u003c\/strong\u003e Access doors, vent assembly, and thermostat are sold separately.\u003cbr data-start=\"1709\" data-end=\"1712\"\u003e⚠ Always measure your existing cut-out before ordering to confirm proper fit.\u003c\/p\u003e\n\u003chr data-start=\"1791\" data-end=\"1794\"\u003e\n\u003ch1 data-start=\"1796\" data-end=\"1810\"\u003eKey Features\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli data-start=\"1814\" data-end=\"1843\"\u003e20,000 BTU heating capacity\u003c\/li\u003e\n\u003cli data-start=\"1846\" data-end=\"1874\"\u003eLP Gas (propane) operation\u003c\/li\u003e\n\u003cli data-start=\"1877\" data-end=\"1906\"\u003eSingle-stage heating system\u003c\/li\u003e\n\u003cli data-start=\"1909\" data-end=\"1931\"\u003e12 Volt DC operation\u003c\/li\u003e\n\u003cli data-start=\"1934\" data-end=\"1962\"\u003eElectronic ignition system\u003c\/li\u003e\n\u003cli data-start=\"1965\" data-end=\"2031\"\u003e\u003cstrong data-start=\"1965\" data-end=\"2029\"\u003eHall Effect airflow verification (no mechanical sail switch)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"2034\" data-end=\"2072\"\u003eSide or bottom ducting compatibility\u003c\/li\u003e\n\u003cli data-start=\"2075\" data-end=\"2112\"\u003eSmall chassis footprint (12\" width)\u003c\/li\u003e\n\u003cli data-start=\"2115\" data-end=\"2153\"\u003eOutside valve manifold configuration\u003c\/li\u003e\n\u003cli data-start=\"2156\" data-end=\"2195\"\u003eDoorless (exterior door not included)\u003c\/li\u003e\n\u003cli data-start=\"2198\" data-end=\"2226\"\u003eVent assembly not included\u003c\/li\u003e\n\u003cli data-start=\"2229\" data-end=\"2257\"\u003eThermostat sold separately\u003c\/li\u003e\n\u003cli data-start=\"2260\" data-end=\"2300\"\u003e\u003cstrong data-start=\"2260\" data-end=\"2300\"\u003e2-Year Limited Manufacturer Warranty\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2302\" data-end=\"2305\"\u003e\n\u003ch1 data-start=\"2307\" data-end=\"2323\"\u003eSpecifications\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli data-start=\"2327\" data-end=\"2350\"\u003e\n\u003cstrong data-start=\"2327\" data-end=\"2337\"\u003eModel:\u003c\/strong\u003e DFSDH20121\u003c\/li\u003e\n\u003cli data-start=\"2353\" data-end=\"2379\"\u003e\n\u003cstrong data-start=\"2353\" data-end=\"2364\"\u003eSeries:\u003c\/strong\u003e DFS H Series\u003c\/li\u003e\n\u003cli data-start=\"2382\" data-end=\"2410\"\u003e\n\u003cstrong data-start=\"2382\" data-end=\"2397\"\u003eBTU Rating:\u003c\/strong\u003e 20,000 BTU\u003c\/li\u003e\n\u003cli data-start=\"2413\" data-end=\"2446\"\u003e\n\u003cstrong data-start=\"2413\" data-end=\"2431\"\u003eHeating Stage:\u003c\/strong\u003e Single Stage\u003c\/li\u003e\n\u003cli data-start=\"2449\" data-end=\"2472\"\u003e\n\u003cstrong data-start=\"2449\" data-end=\"2463\"\u003eFuel Type:\u003c\/strong\u003e LP Gas\u003c\/li\u003e\n\u003cli data-start=\"2475\" data-end=\"2500\"\u003e\n\u003cstrong data-start=\"2475\" data-end=\"2487\"\u003eVoltage:\u003c\/strong\u003e 12 Volt DC\u003c\/li\u003e\n\u003cli data-start=\"2503\" data-end=\"2540\"\u003e\n\u003cstrong data-start=\"2503\" data-end=\"2523\"\u003eDucting Options:\u003c\/strong\u003e Side or Bottom\u003c\/li\u003e\n\u003cli data-start=\"2543\" data-end=\"2565\"\u003e\n\u003cstrong data-start=\"2543\" data-end=\"2553\"\u003eWidth:\u003c\/strong\u003e 12 inches\u003c\/li\u003e\n\u003cli data-start=\"2568\" data-end=\"2590\"\u003e\n\u003cstrong data-start=\"2568\" data-end=\"2579\"\u003eHeight:\u003c\/strong\u003e 7 inches\u003c\/li\u003e\n\u003cli data-start=\"2593\" data-end=\"2615\"\u003e\n\u003cstrong data-start=\"2593\" data-end=\"2603\"\u003eDepth:\u003c\/strong\u003e 20 inches\u003c\/li\u003e\n\u003cli data-start=\"2618\" data-end=\"2658\"\u003e\n\u003cstrong data-start=\"2618\" data-end=\"2636\"\u003eIgnition Type:\u003c\/strong\u003e Electronic Ignition\u003c\/li\u003e\n\u003cli data-start=\"2661\" data-end=\"2705\"\u003e\n\u003cstrong data-start=\"2661\" data-end=\"2684\"\u003eAirflow Monitoring:\u003c\/strong\u003e Hall Effect Sensor\u003c\/li\u003e\n\u003cli data-start=\"2708\" data-end=\"2740\"\u003e\n\u003cstrong data-start=\"2708\" data-end=\"2735\"\u003eVent Assembly Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli data-start=\"2743\" data-end=\"2782\"\u003e\n\u003cstrong data-start=\"2743\" data-end=\"2777\"\u003eExterior Access Door Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli data-start=\"2785\" data-end=\"2814\"\u003e\n\u003cstrong data-start=\"2785\" data-end=\"2809\"\u003eThermostat Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli data-start=\"2817\" data-end=\"2869\"\u003e\n\u003cstrong data-start=\"2817\" data-end=\"2830\"\u003eWarranty:\u003c\/strong\u003e 2-Year Limited Manufacturer Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2871\" data-end=\"2874\"\u003e\n\u003ch1 data-start=\"2876\" data-end=\"2935\"\u003eOutside Valve Manifold \/ Less Door Design – What It Means\u003c\/h1\u003e\n\u003cp data-start=\"2937\" data-end=\"2984\"\u003eThis model is designed for installations where:\u003c\/p\u003e\n\u003cp data-start=\"2986\" data-end=\"3158\"\u003e✔ An exterior furnace door is not desired\u003cbr data-start=\"3027\" data-end=\"3030\"\u003e✔ A large sidewall cut is not practical\u003cbr data-start=\"3069\" data-end=\"3072\"\u003e✔ Flexible positioning is required\u003cbr data-start=\"3106\" data-end=\"3109\"\u003e✔ Custom interior servicing access is preferred\u003c\/p\u003e\n\u003ch3 data-start=\"3160\" data-end=\"3172\"\u003eBenefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"3175\" data-end=\"3196\"\u003eCleaner RV exterior\u003c\/li\u003e\n\u003cli data-start=\"3199\" data-end=\"3233\"\u003eGreater installation flexibility\u003c\/li\u003e\n\u003cli data-start=\"3236\" data-end=\"3300\"\u003eIdeal for vans, compact builds, ice houses, and custom layouts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"3302\" data-end=\"3320\"\u003eConsiderations\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"3323\" data-end=\"3368\"\u003eFurnace must be serviced from inside the RV\u003c\/li\u003e\n\u003cli data-start=\"3371\" data-end=\"3414\"\u003eVent assembly must be selected separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3416\" data-end=\"3419\"\u003e\n\u003ch1 data-start=\"3421\" data-end=\"3453\"\u003eWhy Choose the DFS “H” Series?\u003c\/h1\u003e\n\u003cp data-start=\"3455\" data-end=\"3520\"\u003eOlder small furnaces rely on mechanical sail switches, which can:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"3524\" data-end=\"3547\"\u003eBecome dirty or stuck\u003c\/li\u003e\n\u003cli data-start=\"3550\" data-end=\"3588\"\u003eCause intermittent ignition failures\u003c\/li\u003e\n\u003cli data-start=\"3591\" data-end=\"3618\"\u003eRequire periodic cleaning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3620\" data-end=\"3744\"\u003eThe \u003cstrong data-start=\"3624\" data-end=\"3646\"\u003eHall Effect system\u003c\/strong\u003e in the DFSDH20121 electronically confirms airflow through motor rotation detection, resulting in:\u003c\/p\u003e\n\u003cp data-start=\"3746\" data-end=\"3874\"\u003e✔ Faster, more reliable ignition\u003cbr data-start=\"3778\" data-end=\"3781\"\u003e✔ Reduced maintenance\u003cbr data-start=\"3802\" data-end=\"3805\"\u003e✔ Improved long-term durability\u003cbr data-start=\"3836\" data-end=\"3839\"\u003e✔ Better cold-weather reliability\u003c\/p\u003e\n\u003chr data-start=\"3876\" data-end=\"3879\"\u003e\n\u003ch1 data-start=\"3881\" data-end=\"3901\"\u003eIdeal Applications\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli data-start=\"3905\" data-end=\"3922\"\u003eVan conversions\u003c\/li\u003e\n\u003cli data-start=\"3925\" data-end=\"3940\"\u003eTruck campers\u003c\/li\u003e\n\u003cli data-start=\"3943\" data-end=\"3966\"\u003eSmall travel trailers\u003c\/li\u003e\n\u003cli data-start=\"3969\" data-end=\"3987\"\u003eOverlanding rigs\u003c\/li\u003e\n\u003cli data-start=\"3990\" data-end=\"4002\"\u003eTiny homes\u003c\/li\u003e\n\u003cli data-start=\"4005\" data-end=\"4025\"\u003eIce fishing houses\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4027\" data-end=\"4099\"\u003eIts compact 12-inch width makes it ideal for tight furnace compartments.\u003c\/p\u003e\n\u003chr data-start=\"4101\" data-end=\"4104\"\u003e\n\u003ch1 data-start=\"4106\" data-end=\"4140\"\u003eFrequently Asked Questions (FAQ)\u003c\/h1\u003e\n\u003cp data-start=\"4142\" data-end=\"4274\"\u003e\u003cstrong data-start=\"4142\" data-end=\"4177\"\u003eQ: What does the “H” designate?\u003c\/strong\u003e\u003cbr data-start=\"4177\" data-end=\"4180\"\u003eA: It indicates a Hall Effect airflow verification system instead of a mechanical sail switch.\u003c\/p\u003e\n\u003cp data-start=\"4276\" data-end=\"4370\"\u003e\u003cstrong data-start=\"4276\" data-end=\"4326\"\u003eQ: Does this furnace include an exterior door?\u003c\/strong\u003e\u003cbr data-start=\"4326\" data-end=\"4329\"\u003eA: No. This is a less-door configuration.\u003c\/p\u003e\n\u003cp data-start=\"4372\" data-end=\"4466\"\u003e\u003cstrong data-start=\"4372\" data-end=\"4409\"\u003eQ: Is the vent assembly included?\u003c\/strong\u003e\u003cbr data-start=\"4409\" data-end=\"4412\"\u003eA: No. The vent assembly must be purchased separately.\u003c\/p\u003e\n\u003cp data-start=\"4468\" data-end=\"4562\"\u003e\u003cstrong data-start=\"4468\" data-end=\"4509\"\u003eQ: Does this use electronic ignition?\u003c\/strong\u003e\u003cbr data-start=\"4509\" data-end=\"4512\"\u003eA: Yes, this furnace features electronic ignition.\u003c\/p\u003e\n\u003cp data-start=\"4564\" data-end=\"4662\"\u003e\u003cstrong data-start=\"4564\" data-end=\"4597\"\u003eQ: What warranty is included?\u003c\/strong\u003e\u003cbr data-start=\"4597\" data-end=\"4600\"\u003eA: This model includes a 2-year limited manufacturer warranty.\u003c\/p\u003e\n\u003cp data-start=\"4664\" data-end=\"4784\"\u003e\u003cstrong data-start=\"4664\" data-end=\"4715\"\u003eQ: Can it be ducted from either side or bottom?\u003c\/strong\u003e\u003cbr data-start=\"4715\" data-end=\"4718\"\u003eA: Yes. It supports both side and bottom discharge configurations.\u003c\/p\u003e","brand":"RV Furnace Guys","offers":[{"title":"Default Title","offer_id":47857627594993,"sku":null,"price":1099.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4941\/0289\/files\/201211.png?v=1772403328"},{"product_id":"dometic™-38359-rv-furnace-dfld40111-40-000-btu-lp-gas-12v-dc","title":"Dometic™ 38359 RV Furnace – DFLD40111 – 40,000 BTU – LP Gas – 12V DC","description":"\u003ch1 data-start=\"163\" data-end=\"235\"\u003eDometic™ 38359 RV Furnace – DFLD40111 – 40,000 BTU – LP Gas – 12V DC\u003c\/h1\u003e\n\u003cp data-start=\"236\" data-end=\"297\"\u003e\u003cstrong data-start=\"236\" data-end=\"297\"\u003eDFL Series | Large Size | Bottom Discharge | Single Stage\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"299\" data-end=\"586\"\u003e\u003cstrong data-start=\"299\" data-end=\"315\"\u003ePart Number:\u003c\/strong\u003e 38359\u003cbr data-start=\"321\" data-end=\"324\"\u003e\u003cstrong data-start=\"324\" data-end=\"334\"\u003eModel:\u003c\/strong\u003e DFLD40111\u003cbr data-start=\"344\" data-end=\"347\"\u003e\u003cstrong data-start=\"347\" data-end=\"358\"\u003eSeries:\u003c\/strong\u003e DFL (Large Series)\u003cbr data-start=\"377\" data-end=\"380\"\u003e\u003cstrong data-start=\"380\" data-end=\"394\"\u003eFuel Type:\u003c\/strong\u003e LP Gas (Propane)\u003cbr data-start=\"411\" data-end=\"414\"\u003e\u003cstrong data-start=\"414\" data-end=\"429\"\u003eBTU Output:\u003c\/strong\u003e 40,000 BTU\u003cbr data-start=\"440\" data-end=\"443\"\u003e\u003cstrong data-start=\"443\" data-end=\"461\"\u003eHeating Stage:\u003c\/strong\u003e Single Stage\u003cbr data-start=\"474\" data-end=\"477\"\u003e\u003cstrong data-start=\"477\" data-end=\"489\"\u003eVoltage:\u003c\/strong\u003e 12 Volt DC\u003cbr data-start=\"500\" data-end=\"503\"\u003e\u003cstrong data-start=\"503\" data-end=\"522\"\u003eDischarge Type:\u003c\/strong\u003e Bottom Discharge\u003cbr data-start=\"539\" data-end=\"542\"\u003e\u003cstrong data-start=\"542\" data-end=\"586\"\u003eAccess Door \u0026amp; Thermostat Sold Separately\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"588\" data-end=\"591\"\u003e\n\u003ch2 data-start=\"593\" data-end=\"612\"\u003eProduct Overview\u003c\/h2\u003e\n\u003cp data-start=\"614\" data-end=\"808\"\u003eThe \u003cstrong data-start=\"618\" data-end=\"654\"\u003eDometic™ 38359 (Model DFLD40111)\u003c\/strong\u003e is a high-capacity \u003cstrong data-start=\"674\" data-end=\"706\"\u003e40,000 BTU LP gas RV furnace\u003c\/strong\u003e designed for large motorhomes, fifth wheels, destination trailers, and high-heat-demand applications.\u003c\/p\u003e\n\u003cp data-start=\"810\" data-end=\"1008\"\u003ePart of the \u003cstrong data-start=\"822\" data-end=\"859\"\u003eDFL Series large-chassis platform\u003c\/strong\u003e, this furnace operates on \u003cstrong data-start=\"886\" data-end=\"906\"\u003e12 Volt DC power\u003c\/strong\u003e and delivers strong, consistent heating performance through a bottom-discharge airflow configuration.\u003c\/p\u003e\n\u003cp data-start=\"1010\" data-end=\"1167\"\u003eAs a \u003cstrong data-start=\"1015\" data-end=\"1039\"\u003esingle-stage furnace\u003c\/strong\u003e, the DFLD40111 operates at full BTU output when activated, providing straightforward, reliable heating for larger RV interiors.\u003c\/p\u003e\n\u003cp data-start=\"1169\" data-end=\"1432\"\u003e⚠ \u003cstrong data-start=\"1171\" data-end=\"1185\"\u003eImportant:\u003c\/strong\u003e This unit requires the purchase of a compatible exterior access door (sold separately).\u003cbr data-start=\"1273\" data-end=\"1276\"\u003e⚠ A compatible wall thermostat is also required and sold separately.\u003cbr data-start=\"1344\" data-end=\"1347\"\u003e⚠ Always measure your existing furnace cut-out before ordering to confirm proper fit.\u003c\/p\u003e\n\u003chr data-start=\"1434\" data-end=\"1437\"\u003e\n\u003ch1 data-start=\"1439\" data-end=\"1453\"\u003eKey Features\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli data-start=\"1457\" data-end=\"1498\"\u003e40,000 BTU high-output heating capacity\u003c\/li\u003e\n\u003cli data-start=\"1501\" data-end=\"1529\"\u003eLP Gas (propane) operation\u003c\/li\u003e\n\u003cli data-start=\"1532\" data-end=\"1561\"\u003eSingle-stage heating system\u003c\/li\u003e\n\u003cli data-start=\"1564\" data-end=\"1597\"\u003e12 Volt DC electrical operation\u003c\/li\u003e\n\u003cli data-start=\"1600\" data-end=\"1640\"\u003eBottom discharge airflow configuration\u003c\/li\u003e\n\u003cli data-start=\"1643\" data-end=\"1671\"\u003eLarge-size furnace chassis\u003c\/li\u003e\n\u003cli data-start=\"1674\" data-end=\"1723\"\u003eDesigned for higher heat demand RV applications\u003c\/li\u003e\n\u003cli data-start=\"1726\" data-end=\"1775\"\u003eExterior access door required (sold separately)\u003c\/li\u003e\n\u003cli data-start=\"1778\" data-end=\"1822\"\u003eWall thermostat required (sold separately)\u003c\/li\u003e\n\u003cli data-start=\"1825\" data-end=\"1858\"\u003eOEM Dometic replacement furnace\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1860\" data-end=\"1863\"\u003e\n\u003ch1 data-start=\"1865\" data-end=\"1881\"\u003eSpecifications\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli data-start=\"1885\" data-end=\"1909\"\u003e\n\u003cstrong data-start=\"1885\" data-end=\"1901\"\u003ePart Number:\u003c\/strong\u003e 38359\u003c\/li\u003e\n\u003cli data-start=\"1912\" data-end=\"1934\"\u003e\n\u003cstrong data-start=\"1912\" data-end=\"1922\"\u003eModel:\u003c\/strong\u003e DFLD40111\u003c\/li\u003e\n\u003cli data-start=\"1937\" data-end=\"1954\"\u003e\n\u003cstrong data-start=\"1937\" data-end=\"1948\"\u003eSeries:\u003c\/strong\u003e DFL\u003c\/li\u003e\n\u003cli data-start=\"1957\" data-end=\"1985\"\u003e\n\u003cstrong data-start=\"1957\" data-end=\"1972\"\u003eBTU Rating:\u003c\/strong\u003e 40,000 BTU\u003c\/li\u003e\n\u003cli data-start=\"1988\" data-end=\"2021\"\u003e\n\u003cstrong data-start=\"1988\" data-end=\"2006\"\u003eHeating Stage:\u003c\/strong\u003e Single Stage\u003c\/li\u003e\n\u003cli data-start=\"2024\" data-end=\"2047\"\u003e\n\u003cstrong data-start=\"2024\" data-end=\"2038\"\u003eFuel Type:\u003c\/strong\u003e LP Gas\u003c\/li\u003e\n\u003cli data-start=\"2050\" data-end=\"2075\"\u003e\n\u003cstrong data-start=\"2050\" data-end=\"2062\"\u003eVoltage:\u003c\/strong\u003e 12 Volt DC\u003c\/li\u003e\n\u003cli data-start=\"2078\" data-end=\"2115\"\u003e\n\u003cstrong data-start=\"2078\" data-end=\"2106\"\u003eDischarge Configuration:\u003c\/strong\u003e Bottom\u003c\/li\u003e\n\u003cli data-start=\"2118\" data-end=\"2144\"\u003e\n\u003cstrong data-start=\"2118\" data-end=\"2128\"\u003eWidth:\u003c\/strong\u003e 16-1\/2 inches\u003c\/li\u003e\n\u003cli data-start=\"2147\" data-end=\"2169\"\u003e\n\u003cstrong data-start=\"2147\" data-end=\"2158\"\u003eHeight:\u003c\/strong\u003e 9 inches\u003c\/li\u003e\n\u003cli data-start=\"2172\" data-end=\"2194\"\u003e\n\u003cstrong data-start=\"2172\" data-end=\"2182\"\u003eDepth:\u003c\/strong\u003e 20 inches\u003c\/li\u003e\n\u003cli data-start=\"2197\" data-end=\"2236\"\u003e\n\u003cstrong data-start=\"2197\" data-end=\"2231\"\u003eExterior Access Door Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli data-start=\"2239\" data-end=\"2268\"\u003e\n\u003cstrong data-start=\"2239\" data-end=\"2263\"\u003eThermostat Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2270\" data-end=\"2273\"\u003e\n\u003ch1 data-start=\"2275\" data-end=\"2295\"\u003eInstallation Notes\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli data-start=\"2299\" data-end=\"2343\"\u003eDesigned for bottom-discharge duct systems\u003c\/li\u003e\n\u003cli data-start=\"2346\" data-end=\"2386\"\u003eRequires matching exterior access door\u003c\/li\u003e\n\u003cli data-start=\"2389\" data-end=\"2426\"\u003eRequires compatible wall thermostat\u003c\/li\u003e\n\u003cli data-start=\"2429\" data-end=\"2486\"\u003eVerify propane supply and 12V DC electrical connections\u003c\/li\u003e\n\u003cli data-start=\"2489\" data-end=\"2542\"\u003eMeasure existing cut-out dimensions before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2544\" data-end=\"2691\"\u003eProper sizing and door selection ensure:\u003cbr\u003e✔ Secure fitment\u003cbr data-start=\"2601\" data-end=\"2604\"\u003e✔ Proper combustion airflow\u003cbr data-start=\"2631\" data-end=\"2634\"\u003e✔ Weather-tight installation\u003cbr data-start=\"2662\" data-end=\"2665\"\u003e✔ Safe furnace operation\u003c\/p\u003e\n\u003chr data-start=\"2693\" data-end=\"2696\"\u003e\n\u003ch1 data-start=\"2698\" data-end=\"2718\"\u003eIdeal Applications\u003c\/h1\u003e\n\u003cp data-start=\"2720\" data-end=\"2759\"\u003eThe DFLD40111 is commonly installed in:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"2763\" data-end=\"2801\"\u003eLarge Class A and Class C motorhomes\u003c\/li\u003e\n\u003cli data-start=\"2804\" data-end=\"2818\"\u003eFifth wheels\u003c\/li\u003e\n\u003cli data-start=\"2821\" data-end=\"2843\"\u003eDestination trailers\u003c\/li\u003e\n\u003cli data-start=\"2846\" data-end=\"2859\"\u003eToy haulers\u003c\/li\u003e\n\u003cli data-start=\"2862\" data-end=\"2878\"\u003ePark model RVs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2880\" data-end=\"2971\"\u003eIts 40,000 BTU output makes it ideal for larger living spaces and colder climate operation.\u003c\/p\u003e\n\u003chr data-start=\"2973\" data-end=\"2976\"\u003e\n\u003ch1 data-start=\"2978\" data-end=\"3012\"\u003eFrequently Asked Questions (FAQ)\u003c\/h1\u003e\n\u003cp data-start=\"3014\" data-end=\"3160\"\u003e\u003cstrong data-start=\"3014\" data-end=\"3049\"\u003eQ: Is this a two-stage furnace?\u003c\/strong\u003e\u003cbr data-start=\"3049\" data-end=\"3052\"\u003eA: No. The DFLD40111 is a single-stage furnace operating at full 40,000 BTU output when heating is required.\u003c\/p\u003e\n\u003cp data-start=\"3162\" data-end=\"3280\"\u003e\u003cstrong data-start=\"3162\" data-end=\"3207\"\u003eQ: Does this unit include an access door?\u003c\/strong\u003e\u003cbr data-start=\"3207\" data-end=\"3210\"\u003eA: No. A compatible exterior access door must be purchased separately.\u003c\/p\u003e\n\u003cp data-start=\"3282\" data-end=\"3365\"\u003e\u003cstrong data-start=\"3282\" data-end=\"3318\"\u003eQ: Is this furnace propane only?\u003c\/strong\u003e\u003cbr data-start=\"3318\" data-end=\"3321\"\u003eA: Yes, this model is LP gas (propane) only.\u003c\/p\u003e\n\u003cp data-start=\"3367\" data-end=\"3423\"\u003e\u003cstrong data-start=\"3367\" data-end=\"3406\"\u003eQ: What voltage does it operate on?\u003c\/strong\u003e\u003cbr data-start=\"3406\" data-end=\"3409\"\u003eA: 12 Volt DC.\u003c\/p\u003e\n\u003cp data-start=\"3425\" data-end=\"3531\"\u003e\u003cstrong data-start=\"3425\" data-end=\"3464\"\u003eQ: What does bottom discharge mean?\u003c\/strong\u003e\u003cbr data-start=\"3464\" data-end=\"3467\"\u003eA: Heated air flows downward into the RV’s floor ducting system.\u003c\/p\u003e","brand":"RV Furnace Guys","offers":[{"title":"Default Title","offer_id":47857629135089,"sku":null,"price":1769.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4941\/0289\/files\/38359.png?v=1772403555"},{"product_id":"dometic™-35524-rv-furnace-model-dfmd30111-30-000-btu-lp-gas-12v-dc","title":"Dometic™ 35524 RV Furnace – Model DFMD30111 – 30,000 BTU – LP Gas – 12V DC","description":"\u003ch1 data-start=\"166\" data-end=\"244\"\u003eDometic™ 35524 RV Furnace – Model DFMD30111 – 30,000 BTU – LP Gas – 12V DC\u003c\/h1\u003e\n\u003cp data-start=\"245\" data-end=\"330\"\u003e\u003cstrong data-start=\"245\" data-end=\"330\"\u003eDFM Series | Single Stage | Side or Bottom Ducted | Medium Size | 2-Year Warranty\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"332\" data-end=\"665\"\u003e\u003cstrong data-start=\"332\" data-end=\"348\"\u003ePart Number:\u003c\/strong\u003e 35524\u003cbr data-start=\"354\" data-end=\"357\"\u003e\u003cstrong data-start=\"357\" data-end=\"367\"\u003eModel:\u003c\/strong\u003e DFMD30111\u003cbr data-start=\"377\" data-end=\"380\"\u003e\u003cstrong data-start=\"380\" data-end=\"391\"\u003eSeries:\u003c\/strong\u003e DFM (Medium Series)\u003cbr data-start=\"411\" data-end=\"414\"\u003e\u003cstrong data-start=\"414\" data-end=\"428\"\u003eFuel Type:\u003c\/strong\u003e LP Gas (Propane)\u003cbr data-start=\"445\" data-end=\"448\"\u003e\u003cstrong data-start=\"448\" data-end=\"463\"\u003eBTU Output:\u003c\/strong\u003e 30,000 BTU\u003cbr data-start=\"474\" data-end=\"477\"\u003e\u003cstrong data-start=\"477\" data-end=\"495\"\u003eHeating Stage:\u003c\/strong\u003e Single Stage\u003cbr data-start=\"508\" data-end=\"511\"\u003e\u003cstrong data-start=\"511\" data-end=\"523\"\u003eVoltage:\u003c\/strong\u003e 12 Volt DC\u003cbr data-start=\"534\" data-end=\"537\"\u003e\u003cstrong data-start=\"537\" data-end=\"549\"\u003eDucting:\u003c\/strong\u003e Side or Bottom Discharge\u003cbr data-start=\"574\" data-end=\"577\"\u003e\u003cstrong data-start=\"577\" data-end=\"619\"\u003eAccess Door Required (Sold Separately)\u003c\/strong\u003e\u003cbr data-start=\"619\" data-end=\"622\"\u003e\u003cstrong data-start=\"622\" data-end=\"663\"\u003eThermostat Required (Sold Separately)\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"667\" data-end=\"670\"\u003e\n\u003ch2 data-start=\"672\" data-end=\"691\"\u003eProduct Overview\u003c\/h2\u003e\n\u003cp data-start=\"693\" data-end=\"905\"\u003eThe \u003cstrong data-start=\"697\" data-end=\"733\"\u003eDometic™ DFMD30111 (Part #35524)\u003c\/strong\u003e is a dependable \u003cstrong data-start=\"750\" data-end=\"795\"\u003e30,000 BTU single-stage LP gas RV furnace\u003c\/strong\u003e designed for mid-size travel trailers, fifth wheels, and motorhomes requiring efficient and flexible heating.\u003c\/p\u003e\n\u003cp data-start=\"907\" data-end=\"1086\"\u003eBuilt on the reliable \u003cstrong data-start=\"929\" data-end=\"958\"\u003eDFM Series medium chassis\u003c\/strong\u003e, this model operates on \u003cstrong data-start=\"983\" data-end=\"1003\"\u003e12 Volt DC power\u003c\/strong\u003e and supports \u003cstrong data-start=\"1017\" data-end=\"1043\"\u003eside or bottom ducting\u003c\/strong\u003e, providing adaptable installation options.\u003c\/p\u003e\n\u003cp data-start=\"1088\" data-end=\"1195\"\u003eThis furnace requires the separate purchase of an exterior access door for proper installation and venting.\u003c\/p\u003e\n\u003cp data-start=\"1197\" data-end=\"1281\"\u003e⚠ Always measure your existing furnace cut-out before ordering to ensure proper fit.\u003c\/p\u003e\n\u003chr data-start=\"1283\" data-end=\"1286\"\u003e\n\u003ch2 data-start=\"1288\" data-end=\"1328\"\u003eRequired Exterior Access Door Options\u003c\/h2\u003e\n\u003cp data-start=\"1330\" data-end=\"1402\"\u003eThis model requires one of the following access doors (sold separately):\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1406\" data-end=\"1444\"\u003e\u003cstrong data-start=\"1406\" data-end=\"1444\"\u003e33056 – Black Exterior Access Door\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"1447\" data-end=\"1485\"\u003e\u003cstrong data-start=\"1447\" data-end=\"1485\"\u003e33057 – White Exterior Access Door\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1487\" data-end=\"1544\"\u003eSelect the door color that best matches your RV exterior.\u003c\/p\u003e\n\u003chr data-start=\"1546\" data-end=\"1549\"\u003e\n\u003ch2 data-start=\"1551\" data-end=\"1566\"\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-start=\"1570\" data-end=\"1599\"\u003e30,000 BTU heating capacity\u003c\/li\u003e\n\u003cli data-start=\"1602\" data-end=\"1626\"\u003eSingle-stage operation\u003c\/li\u003e\n\u003cli data-start=\"1629\" data-end=\"1654\"\u003eLP gas (propane) system\u003c\/li\u003e\n\u003cli data-start=\"1657\" data-end=\"1690\"\u003e12 Volt DC electrical operation\u003c\/li\u003e\n\u003cli data-start=\"1693\" data-end=\"1728\"\u003eSide or bottom duct configuration\u003c\/li\u003e\n\u003cli data-start=\"1731\" data-end=\"1762\"\u003eMedium-size furnace footprint\u003c\/li\u003e\n\u003cli data-start=\"1765\" data-end=\"1814\"\u003eExterior access door required (sold separately)\u003c\/li\u003e\n\u003cli data-start=\"1817\" data-end=\"1861\"\u003eWall thermostat required (sold separately)\u003c\/li\u003e\n\u003cli data-start=\"1864\" data-end=\"1904\"\u003e\u003cstrong data-start=\"1864\" data-end=\"1904\"\u003e2-Year Limited Manufacturer Warranty\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1906\" data-end=\"1909\"\u003e\n\u003ch2 data-start=\"1911\" data-end=\"1928\"\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-start=\"1932\" data-end=\"1956\"\u003e\n\u003cstrong data-start=\"1932\" data-end=\"1948\"\u003ePart Number:\u003c\/strong\u003e 35524\u003c\/li\u003e\n\u003cli data-start=\"1959\" data-end=\"1981\"\u003e\n\u003cstrong data-start=\"1959\" data-end=\"1969\"\u003eModel:\u003c\/strong\u003e DFMD30111\u003c\/li\u003e\n\u003cli data-start=\"1984\" data-end=\"2001\"\u003e\n\u003cstrong data-start=\"1984\" data-end=\"1995\"\u003eSeries:\u003c\/strong\u003e DFM\u003c\/li\u003e\n\u003cli data-start=\"2004\" data-end=\"2032\"\u003e\n\u003cstrong data-start=\"2004\" data-end=\"2019\"\u003eBTU Rating:\u003c\/strong\u003e 30,000 BTU\u003c\/li\u003e\n\u003cli data-start=\"2035\" data-end=\"2058\"\u003e\n\u003cstrong data-start=\"2035\" data-end=\"2049\"\u003eFuel Type:\u003c\/strong\u003e LP Gas\u003c\/li\u003e\n\u003cli data-start=\"2061\" data-end=\"2094\"\u003e\n\u003cstrong data-start=\"2061\" data-end=\"2079\"\u003eHeating Stage:\u003c\/strong\u003e Single Stage\u003c\/li\u003e\n\u003cli data-start=\"2097\" data-end=\"2122\"\u003e\n\u003cstrong data-start=\"2097\" data-end=\"2109\"\u003eVoltage:\u003c\/strong\u003e 12 Volt DC\u003c\/li\u003e\n\u003cli data-start=\"2125\" data-end=\"2168\"\u003e\n\u003cstrong data-start=\"2125\" data-end=\"2151\"\u003eDucting Configuration:\u003c\/strong\u003e Side or Bottom\u003c\/li\u003e\n\u003cli data-start=\"2171\" data-end=\"2197\"\u003e\n\u003cstrong data-start=\"2171\" data-end=\"2181\"\u003eWidth:\u003c\/strong\u003e 16-1\/2 inches\u003c\/li\u003e\n\u003cli data-start=\"2200\" data-end=\"2226\"\u003e\n\u003cstrong data-start=\"2200\" data-end=\"2211\"\u003eHeight:\u003c\/strong\u003e 7-3\/8 inches\u003c\/li\u003e\n\u003cli data-start=\"2229\" data-end=\"2251\"\u003e\n\u003cstrong data-start=\"2229\" data-end=\"2239\"\u003eDepth:\u003c\/strong\u003e 20 inches\u003c\/li\u003e\n\u003cli data-start=\"2254\" data-end=\"2284\"\u003e\n\u003cstrong data-start=\"2254\" data-end=\"2279\"\u003eAccess Door Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli data-start=\"2287\" data-end=\"2316\"\u003e\n\u003cstrong data-start=\"2287\" data-end=\"2311\"\u003eThermostat Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli data-start=\"2319\" data-end=\"2371\"\u003e\n\u003cstrong data-start=\"2319\" data-end=\"2332\"\u003eWarranty:\u003c\/strong\u003e 2-Year Limited Manufacturer Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2373\" data-end=\"2376\"\u003e\n\u003ch2 data-start=\"2378\" data-end=\"2399\"\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-start=\"2403\" data-end=\"2445\"\u003eDesigned for side or bottom duct systems\u003c\/li\u003e\n\u003cli data-start=\"2448\" data-end=\"2507\"\u003eRequires compatible exterior access door (33056 or 33057)\u003c\/li\u003e\n\u003cli data-start=\"2510\" data-end=\"2547\"\u003eCompatible wall thermostat required\u003c\/li\u003e\n\u003cli data-start=\"2550\" data-end=\"2609\"\u003eVerify propane connection placement and electrical wiring\u003c\/li\u003e\n\u003cli data-start=\"2612\" data-end=\"2665\"\u003eMeasure existing cut-out dimensions before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2667\" data-end=\"2670\"\u003e\n\u003ch2 data-start=\"2672\" data-end=\"2693\"\u003eIdeal Applications\u003c\/h2\u003e\n\u003cp data-start=\"2695\" data-end=\"2722\"\u003eThe DFMD30111 is ideal for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"2726\" data-end=\"2752\"\u003eMid-size travel trailers\u003c\/li\u003e\n\u003cli data-start=\"2755\" data-end=\"2769\"\u003eFifth wheels\u003c\/li\u003e\n\u003cli data-start=\"2772\" data-end=\"2792\"\u003eClass C motorhomes\u003c\/li\u003e\n\u003cli data-start=\"2795\" data-end=\"2808\"\u003eToy haulers\u003c\/li\u003e\n\u003cli data-start=\"2811\" data-end=\"2856\"\u003eRV upgrades from older Atwood DFMD30 models\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2858\" data-end=\"2861\"\u003e\n\u003ch2 data-start=\"2863\" data-end=\"2898\"\u003eFrequently Asked Questions (FAQ)\u003c\/h2\u003e\n\u003cp data-start=\"2900\" data-end=\"2987\"\u003e\u003cstrong data-start=\"2900\" data-end=\"2935\"\u003eQ: Is this a two-stage furnace?\u003c\/strong\u003e\u003cbr data-start=\"2935\" data-end=\"2938\"\u003eA: No. This is a single-stage 30,000 BTU furnace.\u003c\/p\u003e\n\u003cp data-start=\"2989\" data-end=\"3107\"\u003e\u003cstrong data-start=\"2989\" data-end=\"3030\"\u003eQ: Does it include the exterior door?\u003c\/strong\u003e\u003cbr data-start=\"3030\" data-end=\"3033\"\u003eA: No. You must purchase either 33056 (black) or 33057 (white) separately.\u003c\/p\u003e\n\u003cp data-start=\"3109\" data-end=\"3167\"\u003e\u003cstrong data-start=\"3109\" data-end=\"3150\"\u003eQ: What voltage does this operate on?\u003c\/strong\u003e\u003cbr data-start=\"3150\" data-end=\"3153\"\u003eA: 12 Volt DC.\u003c\/p\u003e\n\u003cp data-start=\"3169\" data-end=\"3288\"\u003e\u003cstrong data-start=\"3169\" data-end=\"3217\"\u003eQ: Can it be ducted from the side or bottom?\u003c\/strong\u003e\u003cbr data-start=\"3217\" data-end=\"3220\"\u003eA: Yes. This unit supports both side and bottom duct configurations.\u003c\/p\u003e\n\u003cp data-start=\"3290\" data-end=\"3390\"\u003e\u003cstrong data-start=\"3290\" data-end=\"3323\"\u003eQ: What warranty is included?\u003c\/strong\u003e\u003cbr data-start=\"3323\" data-end=\"3326\"\u003eA: This furnace includes a 2-year limited manufacturer warranty.\u003c\/p\u003e","brand":"RV Furnace Guys","offers":[{"title":"Default Title","offer_id":47857671340273,"sku":null,"price":1349.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4941\/0289\/files\/35524DFDM.png?v=1772404622"},{"product_id":"dometic™-35525-rv-furnace-model-dfmd25111-25-000-btu-lp-gas-12v-dc","title":"Dometic™ 35525 RV Furnace – Model DFMD25111 – 25,000 BTU – LP Gas – 12V DC","description":"\u003ch1 data-start=\"193\" data-end=\"271\"\u003eDometic™ 35525 RV Furnace – Model DFMD25111 – 25,000 BTU – LP Gas – 12V DC\u003c\/h1\u003e\n\u003cp data-start=\"272\" data-end=\"357\"\u003e\u003cstrong data-start=\"272\" data-end=\"357\"\u003eDFM Series | Single Stage | Side or Bottom Ducted | Medium Size | 2-Year Warranty\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"359\" data-end=\"687\"\u003e\u003cstrong data-start=\"359\" data-end=\"375\"\u003ePart Number:\u003c\/strong\u003e 35525\u003cbr data-start=\"381\" data-end=\"384\"\u003e\u003cstrong data-start=\"384\" data-end=\"394\"\u003eModel:\u003c\/strong\u003e DFMD25111\u003cbr data-start=\"404\" data-end=\"407\"\u003e\u003cstrong data-start=\"407\" data-end=\"418\"\u003eSeries:\u003c\/strong\u003e DFM (Medium Series)\u003cbr data-start=\"438\" data-end=\"441\"\u003e\u003cstrong data-start=\"441\" data-end=\"455\"\u003eFuel Type:\u003c\/strong\u003e LP Gas (Propane)\u003cbr data-start=\"472\" data-end=\"475\"\u003e\u003cstrong data-start=\"475\" data-end=\"490\"\u003eBTU Output:\u003c\/strong\u003e 25,000 BTU\u003cbr data-start=\"501\" data-end=\"504\"\u003e\u003cstrong data-start=\"504\" data-end=\"522\"\u003eHeating Stage:\u003c\/strong\u003e Single Stage\u003cbr data-start=\"535\" data-end=\"538\"\u003e\u003cstrong data-start=\"538\" data-end=\"550\"\u003eVoltage:\u003c\/strong\u003e 12 Volt DC\u003cbr data-start=\"561\" data-end=\"564\"\u003e\u003cstrong data-start=\"564\" data-end=\"576\"\u003eDucting:\u003c\/strong\u003e Side or Bottom Discharge\u003cbr data-start=\"601\" data-end=\"604\"\u003e\u003cstrong data-start=\"604\" data-end=\"654\"\u003eOutside Access Door Required (Sold Separately)\u003c\/strong\u003e\u003cbr data-start=\"654\" data-end=\"657\"\u003e\u003cstrong data-start=\"657\" data-end=\"687\"\u003eThermostat Sold Separately\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"689\" data-end=\"692\"\u003e\n\u003ch2 data-start=\"694\" data-end=\"713\"\u003eProduct Overview\u003c\/h2\u003e\n\u003cp data-start=\"715\" data-end=\"929\"\u003eThe \u003cstrong data-start=\"719\" data-end=\"755\"\u003eDometic™ DFMD25111 (Part #35525)\u003c\/strong\u003e is a reliable \u003cstrong data-start=\"770\" data-end=\"815\"\u003e25,000 BTU single-stage LP gas RV furnace\u003c\/strong\u003e designed for medium-sized travel trailers, fifth wheels, and motorhomes requiring efficient and flexible heating.\u003c\/p\u003e\n\u003cp data-start=\"931\" data-end=\"1129\"\u003eBuilt on Dometic’s proven \u003cstrong data-start=\"957\" data-end=\"986\"\u003eDFM Series medium chassis\u003c\/strong\u003e, this furnace operates on \u003cstrong data-start=\"1013\" data-end=\"1033\"\u003e12 Volt DC power\u003c\/strong\u003e and supports both \u003cstrong data-start=\"1052\" data-end=\"1078\"\u003eside or bottom ducting\u003c\/strong\u003e, making it adaptable for a variety of floor plans.\u003c\/p\u003e\n\u003cp data-start=\"1131\" data-end=\"1379\"\u003e⚠ \u003cstrong data-start=\"1133\" data-end=\"1147\"\u003eImportant:\u003c\/strong\u003e This furnace requires a separate exterior access door (sold separately) for proper installation and venting.\u003cbr data-start=\"1256\" data-end=\"1259\"\u003e⚠ Always measure your existing furnace cut-out, especially depth, to ensure the new deeper dimensions will fit properly.\u003c\/p\u003e\n\u003chr data-start=\"1381\" data-end=\"1384\"\u003e\n\u003ch2 data-start=\"1386\" data-end=\"1401\"\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-start=\"1405\" data-end=\"1434\"\u003e25,000 BTU heating capacity\u003c\/li\u003e\n\u003cli data-start=\"1437\" data-end=\"1469\"\u003eSingle-stage heating operation\u003c\/li\u003e\n\u003cli data-start=\"1472\" data-end=\"1497\"\u003eLP Gas (propane) system\u003c\/li\u003e\n\u003cli data-start=\"1500\" data-end=\"1533\"\u003e12 Volt DC electrical operation\u003c\/li\u003e\n\u003cli data-start=\"1536\" data-end=\"1571\"\u003eSide or bottom duct compatibility\u003c\/li\u003e\n\u003cli data-start=\"1574\" data-end=\"1609\"\u003eMedium-size installation platform\u003c\/li\u003e\n\u003cli data-start=\"1612\" data-end=\"1660\"\u003eOutside access door required (sold separately)\u003c\/li\u003e\n\u003cli data-start=\"1663\" data-end=\"1718\"\u003eCompatible wall thermostat required (sold separately)\u003c\/li\u003e\n\u003cli data-start=\"1721\" data-end=\"1761\"\u003e\u003cstrong data-start=\"1721\" data-end=\"1761\"\u003e2-Year Limited Manufacturer Warranty\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1763\" data-end=\"1766\"\u003e\n\u003ch2 data-start=\"1768\" data-end=\"1785\"\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-start=\"1789\" data-end=\"1813\"\u003e\n\u003cstrong data-start=\"1789\" data-end=\"1805\"\u003ePart Number:\u003c\/strong\u003e 35525\u003c\/li\u003e\n\u003cli data-start=\"1816\" data-end=\"1838\"\u003e\n\u003cstrong data-start=\"1816\" data-end=\"1826\"\u003eModel:\u003c\/strong\u003e DFMD25111\u003c\/li\u003e\n\u003cli data-start=\"1841\" data-end=\"1858\"\u003e\n\u003cstrong data-start=\"1841\" data-end=\"1852\"\u003eSeries:\u003c\/strong\u003e DFM\u003c\/li\u003e\n\u003cli data-start=\"1861\" data-end=\"1889\"\u003e\n\u003cstrong data-start=\"1861\" data-end=\"1876\"\u003eBTU Rating:\u003c\/strong\u003e 25,000 BTU\u003c\/li\u003e\n\u003cli data-start=\"1892\" data-end=\"1915\"\u003e\n\u003cstrong data-start=\"1892\" data-end=\"1906\"\u003eFuel Type:\u003c\/strong\u003e LP Gas\u003c\/li\u003e\n\u003cli data-start=\"1918\" data-end=\"1951\"\u003e\n\u003cstrong data-start=\"1918\" data-end=\"1936\"\u003eHeating Stage:\u003c\/strong\u003e Single Stage\u003c\/li\u003e\n\u003cli data-start=\"1954\" data-end=\"1979\"\u003e\n\u003cstrong data-start=\"1954\" data-end=\"1966\"\u003eVoltage:\u003c\/strong\u003e 12 Volt DC\u003c\/li\u003e\n\u003cli data-start=\"1982\" data-end=\"2025\"\u003e\n\u003cstrong data-start=\"1982\" data-end=\"2008\"\u003eDucting Configuration:\u003c\/strong\u003e Side or Bottom\u003c\/li\u003e\n\u003cli data-start=\"2028\" data-end=\"2054\"\u003e\n\u003cstrong data-start=\"2028\" data-end=\"2038\"\u003eWidth:\u003c\/strong\u003e 16-1\/2 inches\u003c\/li\u003e\n\u003cli data-start=\"2057\" data-end=\"2083\"\u003e\n\u003cstrong data-start=\"2057\" data-end=\"2068\"\u003eHeight:\u003c\/strong\u003e 7-3\/8 inches\u003c\/li\u003e\n\u003cli data-start=\"2086\" data-end=\"2108\"\u003e\n\u003cstrong data-start=\"2086\" data-end=\"2096\"\u003eDepth:\u003c\/strong\u003e 20 inches\u003c\/li\u003e\n\u003cli data-start=\"2111\" data-end=\"2152\"\u003e\n\u003cstrong data-start=\"2111\" data-end=\"2136\"\u003eAccess Door Included:\u003c\/strong\u003e No (Required)\u003c\/li\u003e\n\u003cli data-start=\"2155\" data-end=\"2184\"\u003e\n\u003cstrong data-start=\"2155\" data-end=\"2179\"\u003eThermostat Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli data-start=\"2187\" data-end=\"2239\"\u003e\n\u003cstrong data-start=\"2187\" data-end=\"2200\"\u003eWarranty:\u003c\/strong\u003e 2-Year Limited Manufacturer Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2241\" data-end=\"2244\"\u003e\n\u003ch2 data-start=\"2246\" data-end=\"2278\"\u003eRequired Exterior Access Door\u003c\/h2\u003e\n\u003cp data-start=\"2280\" data-end=\"2435\"\u003eThis model requires a compatible Dometic \/ Atwood exterior furnace access door (sold separately).\u003cbr data-start=\"2377\" data-end=\"2380\"\u003eSelect the proper door color to match your RV exterior.\u003c\/p\u003e\n\u003chr data-start=\"2437\" data-end=\"2440\"\u003e\n\u003ch2 data-start=\"2442\" data-end=\"2463\"\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-start=\"2467\" data-end=\"2509\"\u003eDesigned for side or bottom duct systems\u003c\/li\u003e\n\u003cli data-start=\"2512\" data-end=\"2605\"\u003eProper exterior door installation ensures safe combustion airflow and weather-tight sealing\u003c\/li\u003e\n\u003cli data-start=\"2608\" data-end=\"2669\"\u003eConfirm propane supply alignment and electrical connections\u003c\/li\u003e\n\u003cli data-start=\"2672\" data-end=\"2730\"\u003eMeasure your existing cut-out dimensions before ordering\u003c\/li\u003e\n\u003cli data-start=\"2733\" data-end=\"2802\"\u003eVerify that your installation cavity accommodates the updated depth\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2804\" data-end=\"2807\"\u003e\n\u003ch2 data-start=\"2809\" data-end=\"2830\"\u003eIdeal Applications\u003c\/h2\u003e\n\u003cp data-start=\"2832\" data-end=\"2859\"\u003eThe DFMD25111 is ideal for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"2863\" data-end=\"2889\"\u003eMid-size travel trailers\u003c\/li\u003e\n\u003cli data-start=\"2892\" data-end=\"2906\"\u003eFifth wheels\u003c\/li\u003e\n\u003cli data-start=\"2909\" data-end=\"2929\"\u003eClass C motorhomes\u003c\/li\u003e\n\u003cli data-start=\"2932\" data-end=\"2982\"\u003eRV upgrades replacing older Atwood DFMD25 models\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2984\" data-end=\"2987\"\u003e\n\u003ch2 data-start=\"2989\" data-end=\"3024\"\u003eFrequently Asked Questions (FAQ)\u003c\/h2\u003e\n\u003cp data-start=\"3026\" data-end=\"3113\"\u003e\u003cstrong data-start=\"3026\" data-end=\"3061\"\u003eQ: Is this a two-stage furnace?\u003c\/strong\u003e\u003cbr data-start=\"3061\" data-end=\"3064\"\u003eA: No. This is a single-stage 25,000 BTU furnace.\u003c\/p\u003e\n\u003cp data-start=\"3115\" data-end=\"3244\"\u003e\u003cstrong data-start=\"3115\" data-end=\"3172\"\u003eQ: Does this furnace include an exterior access door?\u003c\/strong\u003e\u003cbr data-start=\"3172\" data-end=\"3175\"\u003eA: No. A compatible outside access door must be purchased separately.\u003c\/p\u003e\n\u003cp data-start=\"3246\" data-end=\"3302\"\u003e\u003cstrong data-start=\"3246\" data-end=\"3285\"\u003eQ: What voltage does it operate on?\u003c\/strong\u003e\u003cbr data-start=\"3285\" data-end=\"3288\"\u003eA: 12 Volt DC.\u003c\/p\u003e\n\u003cp data-start=\"3304\" data-end=\"3434\"\u003e\u003cstrong data-start=\"3304\" data-end=\"3365\"\u003eQ: Can this furnace be ducted from either side or bottom?\u003c\/strong\u003e\u003cbr data-start=\"3365\" data-end=\"3368\"\u003eA: Yes, it supports both side and bottom discharge configurations.\u003c\/p\u003e\n\u003cp data-start=\"3436\" data-end=\"3535\"\u003e\u003cstrong data-start=\"3436\" data-end=\"3469\"\u003eQ: What warranty is included?\u003c\/strong\u003e\u003cbr data-start=\"3469\" data-end=\"3472\"\u003eA: This furnace carries a 2-year limited manufacturer warranty.\u003c\/p\u003e","brand":"RV Furnace Guys","offers":[{"title":"Default Title","offer_id":47857675141361,"sku":null,"price":1379.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4941\/0289\/files\/35525.png?v=1772404860"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4941\/0289\/collections\/dometic_logo_3.jpg?v=1772398994","url":"https:\/\/www.rvfurnaceparts.com\/collections\/dometic-furnace-units.oembed","provider":"RV Furnace Guys","version":"1.0","type":"link"}