{"product_id":"dometic-18000-btu-lp-gas-rv-furnace-single-stage","title":"Dometic 18000 BTU LP Gas RV Furnace Single Stage","description":"\u003cp class=\"nvn-hero\"\u003eThe Dometic 18,000 BTU LP gas furnace brings dependable, ductable heat to compact RVs, camper vans, and travel trailers. This single-stage unit burns propane, runs its blower on 12-volt power, and packs strong output into a small, service-friendly cabinet that fits tight builds.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eWhen cold mornings roll into camp, the Dometic 18,000 BTU LP gas furnace is what gets your rig warm and keeps it that way. It's a compact, single-stage forced-air furnace built for campers, camper vans, small travel trailers, and any build where space is tight but real heating output still matters. If you've ever woken up shivering because an undersized heater couldn't keep pace, this is the fix.\u003c\/p\u003e\n\u003cp\u003eThe furnace delivers 18,000 BTU of heating input, and it's engineered to convert that into steady, usable warmth of roughly 13,680 BTU output at the registers. That's enough to take the bite out of a frosty desert night or a shoulder-season trip in the mountains. As a single-stage unit, it keeps things simple and reliable. It fires at full output when the thermostat calls for heat, then shuts off cleanly when your cabin is warm, cycling to hold the temperature you set.\u003c\/p\u003e\n\u003cp\u003eFuel is standard LP gas, so it runs off your rig's propane supply just like your stove and water heater. The blower and controls operate on 12-volt DC power, which means the furnace keeps working off your house batteries when you're boondocking far from shore power. That combination of propane heat and 12-volt operation is exactly why forced-air furnaces like this one are the backbone of RV heating.\u003c\/p\u003e\n\u003cp\u003eDometic designed this furnace to be ductable, so you can route warm air where you need it through most common duct configurations. Whether you're heating a single open space or pushing warmth to a back bedroom and a bathroom, the flexible duct options let you tailor the install to your floor plan. It's a genuinely versatile platform for both new builds and replacements.\u003c\/p\u003e\n\u003cp\u003eSize is a big part of the appeal. The cabinet measures about 12 inches wide, 7 inches tall, and 20 inches deep, and the unit weighs only around 21 pounds. That small footprint makes it a natural choice for vans and compact trailers where every inch of cabinet space counts. It slips into tight mechanical bays that larger furnaces simply won't fit.\u003c\/p\u003e\n\u003cp\u003eThe blower motor draws about 4.8 amps on 12-volt power while running, which is modest enough to live comfortably within a well-planned house battery system. A sail switch is part of the design, a safety feature that confirms the blower is actually moving air before the burner will light, so the furnace won't fire without proper airflow. It's the kind of built-in protection you want in a gas appliance you sleep next to.\u003c\/p\u003e\n\u003cp\u003eInstallation follows familiar RV furnace practice, with an outside access panel for the burner and combustion air and a duct connection on the inside. Because it's a gas appliance, most owners have it installed or inspected by a qualified RV technician and always follow the Dometic installation instructions to the letter. Done right, it's a set-and-forget source of heat for years of trips.\u003c\/p\u003e\n\u003cp\u003eThink about where a compact furnace like this really pays off. A camper van build where the mechanical bay is measured in inches. A small travel trailer that spends fall weekends at high elevation. An overland rig that needs reliable heat off-grid without a big electrical draw. In each case you want strong output from a package that fits and sips power, and that's the balance this Dometic furnace is built to strike.\u003c\/p\u003e\n\u003cp\u003eDometic has built RV comfort and climate gear for decades, and this furnace carries that reliability forward. Parts and service are widely available, the platform is proven in the field, and the single-stage design keeps maintenance straightforward. For anyone building out a van or replacing a tired heater in a compact rig, it's a smart, dependable choice.\u003c\/p\u003e\n\u003cp\u003eIf you want warm, quiet, propane-fired heat that fits a small space and runs off your batteries, the Dometic 18,000 BTU LP gas furnace belongs on your short list. Get it installed before the temperature drops and you'll be glad you did on the very first cold night.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003e18,000 BTU heating input with roughly 13,680 BTU of usable output for compact rigs\u003c\/li\u003e\n  \u003cli\u003eSingle-stage forced-air design for simple, reliable operation\u003c\/li\u003e\n  \u003cli\u003eBurns standard LP gas from your rig's propane supply, just like your stove and water heater\u003c\/li\u003e\n  \u003cli\u003e12-volt DC blower and controls keep it working off house batteries while boondocking\u003c\/li\u003e\n  \u003cli\u003eDuctable design routes warm air through most common duct configurations\u003c\/li\u003e\n  \u003cli\u003eCompact cabinet at about 12 by 7 by 20 inches and only around 21 pounds for tight builds\u003c\/li\u003e\n  \u003cli\u003eBuilt-in sail switch confirms airflow before the burner lights for safer operation\u003c\/li\u003e\n  \u003cli\u003eBacked by Dometic, a trusted name in RV comfort and climate gear\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"nvn-trust\"\u003e\n  \u003ch2\u003eWhy Buy from NVN Marine\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eAuthorized Dometic reseller, full manufacturer warranty\u003c\/li\u003e\n    \u003cli\u003eNMEA member and ABYC certified, advice from real boat techs\u003c\/li\u003e\n    \u003cli\u003eSame-day shipping before 3 PM ET on in-stock items\u003c\/li\u003e\n    \u003cli\u003eNY headquarters and Fort Lauderdale flagship retail store\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"nvn-faq\"\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow much heat does this furnace produce?\u003c\/summary\u003e\n    \u003cp\u003eIt has an 18,000 BTU heating input and is engineered to deliver roughly 13,680 BTU of usable output at the registers. That's enough to warm a compact camper, van, or small travel trailer on cold nights.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat fuel does it use?\u003c\/summary\u003e\n    \u003cp\u003eIt burns standard LP gas, running off your rig's propane supply just like your stove and water heater. The blower and controls run on 12-volt DC power.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I run it without shore power?\u003c\/summary\u003e\n    \u003cp\u003eYes. Because the blower and controls operate on 12-volt DC power and the heat comes from propane, the furnace keeps working off your house batteries when you're boondocking away from hookups.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat does single-stage mean?\u003c\/summary\u003e\n    \u003cp\u003eA single-stage furnace fires at full output when the thermostat calls for heat, then shuts off cleanly once the cabin is warm. It cycles to hold your set temperature and keeps the design simple and reliable.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I add ductwork?\u003c\/summary\u003e\n    \u003cp\u003eYes, the furnace is ductable and supports most common duct configurations. You can route warm air to a single open space or push it to a back bedroom and bathroom depending on your floor plan.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow big is it and will it fit my van?\u003c\/summary\u003e\n    \u003cp\u003eThe cabinet is about 12 inches wide, 7 inches tall, and 20 inches deep, and the unit weighs only around 21 pounds. That compact footprint makes it a strong fit for vans and small trailers with tight mechanical bays.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat is the sail switch for?\u003c\/summary\u003e\n    \u003cp\u003eThe sail switch is a safety feature that confirms the blower is actually moving air before it lets the burner light. It helps make sure the furnace only fires when airflow is correct.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow much power does the blower draw?\u003c\/summary\u003e\n    \u003cp\u003eThe blower motor draws about 4.8 amps on 12-volt power while running, which is modest enough to work well within a properly planned house battery system.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"nvn-specs\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eTitle\u003c\/th\u003e\n\u003ctd\u003eDometic 18000 BTU LP Gas RV Furnace Single Stage\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eDometic\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003eDFSDH20111\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e713814220792\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eRV Furnace\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eHeating Input\u003c\/th\u003e\n\u003ctd\u003e18,000 BTU\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eHeating Output\u003c\/th\u003e\n\u003ctd\u003eApprox. 13,680 BTU\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eFuel Type\u003c\/th\u003e\n\u003ctd\u003eLP gas (propane)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eStage\u003c\/th\u003e\n\u003ctd\u003eSingle stage\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003ctd\u003e12V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBlower Current\u003c\/th\u003e\n\u003ctd\u003eApprox. 4.8 A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDuctable\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSail Switch\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWidth\u003c\/th\u003e\n\u003ctd\u003e12 in\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eHeight\u003c\/th\u003e\n\u003ctd\u003e7 in\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDepth\u003c\/th\u003e\n\u003ctd\u003e20 in\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003eApprox. 21 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How much heat does this furnace produce?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It has an 18,000 BTU heating input and is engineered to deliver roughly 13,680 BTU of usable output at the registers. That's enough to warm a compact camper, van, or small travel trailer on cold nights.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What fuel does it use?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It burns standard LP gas, running off your rig's propane supply just like your stove and water heater. The blower and controls run on 12-volt DC power.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I run it without shore power?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. Because the blower and controls operate on 12-volt DC power and the heat comes from propane, the furnace keeps working off your house batteries when you're boondocking away from hookups.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What does single-stage mean?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"A single-stage furnace fires at full output when the thermostat calls for heat, then shuts off cleanly once the cabin is warm. It cycles to hold your set temperature and keeps the design simple and reliable.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I add ductwork?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes, the furnace is ductable and supports most common duct configurations. You can route warm air to a single open space or push it to a back bedroom and bathroom depending on your floor plan.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How big is it and will it fit my van?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The cabinet is about 12 inches wide, 7 inches tall, and 20 inches deep, and the unit weighs only around 21 pounds. That compact footprint makes it a strong fit for vans and small trailers with tight mechanical bays.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What is the sail switch for?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The sail switch is a safety feature that confirms the blower is actually moving air before it lets the burner light. 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