{"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 data-end=\"360\" data-start=\"276\"\u003eDometic™ DFMDH25111 RV Furnace – 25,000 BTU – LP Gas – Bottom Discharge – 12V DC\u003c\/h1\u003e\n\u003cp data-end=\"416\" data-start=\"361\"\u003e\u003cstrong data-end=\"416\" data-start=\"361\"\u003eDFM Series | Hall Effect Sensor Model | Medium Size\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"669\" data-start=\"418\"\u003e\u003cstrong data-end=\"428\" data-start=\"418\"\u003eModel:\u003c\/strong\u003e DFMDH25111\u003cbr data-end=\"442\" data-start=\"439\"\u003e\u003cstrong data-end=\"453\" data-start=\"442\"\u003eSeries:\u003c\/strong\u003e DFM “H” Series\u003cbr data-end=\"471\" data-start=\"468\"\u003e\u003cstrong data-end=\"485\" data-start=\"471\"\u003eFuel Type:\u003c\/strong\u003e LP Gas (Propane)\u003cbr data-end=\"505\" data-start=\"502\"\u003e\u003cstrong data-end=\"520\" data-start=\"505\"\u003eBTU Output:\u003c\/strong\u003e 25,000 BTU\u003cbr data-end=\"534\" data-start=\"531\"\u003e\u003cstrong data-end=\"544\" data-start=\"534\"\u003eStage:\u003c\/strong\u003e Single Stage\u003cbr data-end=\"560\" data-start=\"557\"\u003e\u003cstrong data-end=\"572\" data-start=\"560\"\u003eVoltage:\u003c\/strong\u003e 12 Volt DC\u003cbr data-end=\"586\" data-start=\"583\"\u003e\u003cstrong data-end=\"605\" data-start=\"586\"\u003eDischarge Type:\u003c\/strong\u003e Bottom Discharge\u003cbr data-end=\"625\" data-start=\"622\"\u003e\u003cstrong data-end=\"669\" data-start=\"625\"\u003eAccess Door \u0026amp; Thermostat Sold Separately\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"669\" data-start=\"418\"\u003e\u003cstrong data-end=\"669\" data-start=\"625\"\u003e\u003cstrong data-end=\"690\" data-start=\"660\"\u003e2-Year Limited Manufacturer Warranty\u003c\/strong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-end=\"674\" data-start=\"671\"\u003e\n\u003ch2 data-end=\"695\" data-start=\"676\"\u003eProduct Overview\u003c\/h2\u003e\n\u003cp data-end=\"853\" data-start=\"697\"\u003eThe \u003cstrong data-end=\"724\" data-start=\"701\"\u003eDometic™ DFMDH25111\u003c\/strong\u003e is a high-efficiency \u003cstrong data-end=\"778\" data-start=\"746\"\u003e25,000 BTU LP gas RV furnace\u003c\/strong\u003e designed for medium-sized applications requiring bottom-discharge airflow.\u003c\/p\u003e\n\u003cp data-end=\"1031\" data-start=\"855\"\u003eThis model is part of the advanced \u003cstrong data-end=\"908\" data-start=\"890\"\u003eDFM “H” Series\u003c\/strong\u003e, which features a \u003cstrong data-end=\"956\" data-start=\"927\"\u003eHall Effect sensor system\u003c\/strong\u003e — replacing the traditional mechanical sail switch used in older furnaces.\u003c\/p\u003e\n\u003cp data-end=\"1204\" data-start=\"1033\"\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 data-end=\"1236\" data-start=\"1208\"\u003eFaster ignition sequencing\u003c\/li\u003e\n\u003cli data-end=\"1261\" data-start=\"1239\"\u003eImproved reliability\u003c\/li\u003e\n\u003cli data-end=\"1302\" data-start=\"1264\"\u003eFewer airflow-related service issues\u003c\/li\u003e\n\u003cli data-end=\"1363\" data-start=\"1305\"\u003eBetter performance in dusty or cold-weather environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1506\" data-start=\"1365\"\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 data-end=\"1610\" data-start=\"1508\"\u003e⚠ \u003cstrong data-end=\"1524\" data-start=\"1510\"\u003eImportant:\u003c\/strong\u003e Existing cut-out dimensions must be measured before replacement to ensure proper fit.\u003c\/p\u003e\n\u003chr data-end=\"1615\" data-start=\"1612\"\u003e\n\u003ch1 data-end=\"1631\" data-start=\"1617\"\u003eKey Features\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli data-end=\"1664\" data-start=\"1635\"\u003e25,000 BTU heating capacity\u003c\/li\u003e\n\u003cli data-end=\"1695\" data-start=\"1667\"\u003eLP gas (propane) operation\u003c\/li\u003e\n\u003cli data-end=\"1732\" data-start=\"1698\"\u003eSingle-stage heating performance\u003c\/li\u003e\n\u003cli data-end=\"1775\" data-start=\"1735\"\u003eBottom discharge airflow configuration\u003c\/li\u003e\n\u003cli data-end=\"1800\" data-start=\"1778\"\u003e12 Volt DC operation\u003c\/li\u003e\n\u003cli data-end=\"1876\" data-start=\"1803\"\u003e\u003cstrong data-end=\"1874\" data-start=\"1803\"\u003eHall Effect airflow verification system (no mechanical sail switch)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-end=\"1945\" data-start=\"1879\"\u003eImproved ignition reliability vs traditional sail switch systems\u003c\/li\u003e\n\u003cli data-end=\"1984\" data-start=\"1948\"\u003eMedium-size installation footprint\u003c\/li\u003e\n\u003cli data-end=\"2027\" data-start=\"1987\"\u003eDesigned for modern RV heating systems\u003c\/li\u003e\n\u003cli data-end=\"2059\" data-start=\"2030\"\u003eAccess door sold separately\u003c\/li\u003e\n\u003cli data-end=\"2090\" data-start=\"2062\"\u003eThermostat sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"2095\" data-start=\"2092\"\u003e\n\u003ch1 data-end=\"2113\" data-start=\"2097\"\u003eSpecifications\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli data-end=\"2140\" data-start=\"2117\"\u003e\n\u003cstrong data-end=\"2127\" data-start=\"2117\"\u003eModel:\u003c\/strong\u003e DFMDH25111\u003c\/li\u003e\n\u003cli data-end=\"2169\" data-start=\"2143\"\u003e\n\u003cstrong data-end=\"2154\" data-start=\"2143\"\u003eSeries:\u003c\/strong\u003e DFM H Series\u003c\/li\u003e\n\u003cli data-end=\"2200\" data-start=\"2172\"\u003e\n\u003cstrong data-end=\"2187\" data-start=\"2172\"\u003eBTU Rating:\u003c\/strong\u003e 25,000 BTU\u003c\/li\u003e\n\u003cli data-end=\"2226\" data-start=\"2203\"\u003e\n\u003cstrong data-end=\"2217\" data-start=\"2203\"\u003eFuel Type:\u003c\/strong\u003e LP Gas\u003c\/li\u003e\n\u003cli data-end=\"2262\" data-start=\"2229\"\u003e\n\u003cstrong data-end=\"2247\" data-start=\"2229\"\u003eHeating Stage:\u003c\/strong\u003e Single Stage\u003c\/li\u003e\n\u003cli data-end=\"2290\" data-start=\"2265\"\u003e\n\u003cstrong data-end=\"2277\" data-start=\"2265\"\u003eVoltage:\u003c\/strong\u003e 12 Volt DC\u003c\/li\u003e\n\u003cli data-end=\"2324\" data-start=\"2293\"\u003e\n\u003cstrong data-end=\"2315\" data-start=\"2293\"\u003eAirflow Discharge:\u003c\/strong\u003e Bottom\u003c\/li\u003e\n\u003cli data-end=\"2353\" data-start=\"2327\"\u003e\n\u003cstrong data-end=\"2337\" data-start=\"2327\"\u003eWidth:\u003c\/strong\u003e 16-1\/2 inches\u003c\/li\u003e\n\u003cli data-end=\"2378\" data-start=\"2356\"\u003e\n\u003cstrong data-end=\"2367\" data-start=\"2356\"\u003eHeight:\u003c\/strong\u003e 7 inches\u003c\/li\u003e\n\u003cli data-end=\"2403\" data-start=\"2381\"\u003e\n\u003cstrong data-end=\"2391\" data-start=\"2381\"\u003eDepth:\u003c\/strong\u003e 20 inches\u003c\/li\u003e\n\u003cli data-end=\"2452\" data-start=\"2406\"\u003e\n\u003cstrong data-end=\"2431\" data-start=\"2406\"\u003eAirflow Verification:\u003c\/strong\u003e Hall Effect Sensor\u003c\/li\u003e\n\u003cli data-end=\"2487\" data-start=\"2455\"\u003e\n\u003cstrong data-end=\"2481\" data-start=\"2455\"\u003eSoft Start Technology:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli data-end=\"2520\" data-start=\"2490\"\u003e\n\u003cstrong data-end=\"2515\" data-start=\"2490\"\u003eAccess Door Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli data-end=\"2552\" data-start=\"2523\"\u003e\n\u003cstrong data-end=\"2547\" data-start=\"2523\"\u003eThermostat Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"2557\" data-start=\"2554\"\u003e\n\u003ch1 data-end=\"2595\" data-start=\"2559\"\u003eWhy the Hall Effect System Matters\u003c\/h1\u003e\n\u003cp data-end=\"2650\" data-start=\"2597\"\u003eOlder furnaces use a mechanical sail switch that can:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-end=\"2661\" data-start=\"2654\"\u003eStick\u003c\/li\u003e\n\u003cli data-end=\"2675\" data-start=\"2664\"\u003eGet dirty\u003c\/li\u003e\n\u003cli data-end=\"2707\" data-start=\"2678\"\u003eCause intermittent ignition\u003c\/li\u003e\n\u003cli data-end=\"2737\" data-start=\"2710\"\u003eRequire seasonal cleaning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2918\" data-start=\"2739\"\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 data-end=\"2952\" data-start=\"2920\"\u003eThis is especially valuable for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-end=\"2973\" data-start=\"2956\"\u003eOff-grid RV use\u003c\/li\u003e\n\u003cli data-end=\"2998\" data-start=\"2976\"\u003eCold-weather camping\u003c\/li\u003e\n\u003cli data-end=\"3032\" data-start=\"3001\"\u003eHigh-dust travel environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"3037\" data-start=\"3034\"\u003e\n\u003ch1 data-end=\"3073\" data-start=\"3039\"\u003eFrequently Asked Questions (FAQ)\u003c\/h1\u003e\n\u003cp data-end=\"3215\" data-start=\"3075\"\u003e\u003cstrong data-end=\"3114\" data-start=\"3075\"\u003eQ: What does the “H” in DFMDH mean?\u003c\/strong\u003e\u003cbr data-end=\"3117\" data-start=\"3114\"\u003eA: It indicates the furnace uses a Hall Effect sensor system instead of a traditional sail switch.\u003c\/p\u003e\n\u003cp data-end=\"3343\" data-start=\"3217\"\u003e\u003cstrong data-end=\"3260\" data-start=\"3217\"\u003eQ: Does this furnace use a sail switch?\u003c\/strong\u003e\u003cbr data-end=\"3263\" data-start=\"3260\"\u003eA: No. This model uses electronic airflow verification via a Hall Effect sensor.\u003c\/p\u003e\n\u003cp data-end=\"3451\" data-start=\"3345\"\u003e\u003cstrong data-end=\"3384\" data-start=\"3345\"\u003eQ: What does Bottom Discharge mean?\u003c\/strong\u003e\u003cbr data-end=\"3387\" data-start=\"3384\"\u003eA: Heated air exits vertically downward into floor duct systems.\u003c\/p\u003e\n\u003cp data-end=\"3529\" data-start=\"3453\"\u003e\u003cstrong data-end=\"3486\" data-start=\"3453\"\u003eQ: Is this a propane furnace?\u003c\/strong\u003e\u003cbr data-end=\"3489\" data-start=\"3486\"\u003eA: Yes. It operates on LP gas (propane).\u003c\/p\u003e\n\u003cp data-end=\"3638\" data-start=\"3531\"\u003e\u003cstrong data-end=\"3563\" data-start=\"3531\"\u003eQ: Is a thermostat included?\u003c\/strong\u003e\u003cbr data-end=\"3566\" data-start=\"3563\"\u003eA: No. A compatible 12V furnace thermostat must be purchased separately.\u003c\/p\u003e\n\u003cp data-end=\"3733\" data-start=\"3640\"\u003e\u003cstrong data-end=\"3679\" data-start=\"3640\"\u003eQ: Does it include the access door?\u003c\/strong\u003e\u003cbr data-end=\"3682\" data-start=\"3679\"\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:\/\/rvfurnaceguys.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"}