{"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","url":"https:\/\/www.rvfurnaceparts.com\/products\/dometic%e2%84%a2-dfmdh25111-rv-furnace-25-000-btu-lp-gas-bottom-discharge-12v-dc","provider":"RV Furnace Guys","version":"1.0","type":"link"}