No hookups? No problem. This furnace runs on propane and 12V DC, so you stay warm off-grid without draining your batteries. It starts smooth, keeps running in the cold, and includes a white access door that protects the unit.
What makes one furnace more efficient than another? It's all about the heat exchanger. Many RV heaters use a basic box-style core that pushes out uneven heat and noisy airflow. This upgraded model has a tubular exchanger with internal baffles that cut down on turbulence and help warm your space faster and more quietly than those box-style cores. It's made for RVs up to 35 feet long and delivers even, consistent heat throughout your rig.
Quick Tip: Bigger isn't always better. Oversized furnaces cycle too often and waste propane. A good rule of thumb is about 1,000 Btus per foot of RV length. That means a 20,000 Btu furnace is right for a 20' trailer, and a 35,000 Btu furnace like this one is a smart fit for mid- to large-sized RVs that need consistent, full-season heating.
No hookups? No problem. This furnace runs on 12V DC and propane, making it perfect for boondocking or cold-weather trips. The built-in Soft Start cuts startup power by up to 80%, so you don't drain your batteries just to get warm. A Hall Effect sensor replaces traditional moving parts for more reliable ignition, even in freezing temps. From replacing an older unit or building a rig from the ground up, this system delivers steady heat wherever you roam.
Alternate Instructions
California residents: click here
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi, everyone. Steve here with etrailer.com. Let's take a look at our Dometic RV LP gas furnace. It has 35,000 BTUs of power, runs on 12 volts, and it comes with a nice white door. So, folks, I wanna start off, again, this is the one with the white door. We do carry this with a black door option sold separately.
And that item number is DMC67SR. So again, DMC67SR, if you're looking for the black door. Now folks, this is a great furnace, whether you're replacing an old unit or just starting from scratch. There's no shore power needed. It runs on LP gas.
The hookup for that gas is right up here on top. You remove the rubber plug, and then you have another safety plug just protecting the threads here. And then you thread in your LP gas. And then, of course, you wire up your 12 volt wires here to your battery set or your power grid system in the RV or camper, and you're ready to go. It does use quiet SoftStart system that's built in, that's gonna kick in without any loud jolt or power spikes.
And that's a great thing because no one likes to hear a lot of noise and those kind of things, or lose power or trip breakers. So an image here on the screen of the inside of this, you can see the tubular one piece heat exchanger in the back there with all the curved tubes, and there's integrated baffles and everything inside of there that's going to provide more airflow, giving you faster, even heat distribution. And it has what's called a Hall Effect Sensor. And that just eliminates moving parts, giving you greater durability over the life of the furnace. So again, folks, a nice white door.
I have everything just kind of loosely put on here. It does come with the screws and everything to screw it in. And you have the heat exchange exit here. And then, of course, the door can come off if you take the screws off, which again, I never put the screws in. And then you have your on/off/reset button right here. And then as you can see, you can see a little bit more of the inside here and everything. You can mount this the way I have it now, or you can change it so it can go both vertical or horizontal. It's totally up to you. As you can see, you got two vent pop outs here on the side. It does come with four of these adapters included. You have two on the top you could pop out. Three on the back, and then two on the other side. So no matter your setup, you should be covered as far as how you need to hook it up for your specific setup. And, again, that will go back on there. I'm gonna go ahead and leave that off for now. But, again, folks, a great option for you. Again, whether you're starting new or replacing yours, it is 20 inches deep from front to back, seven inches tall whenever it's laid down the way it is now, and 17 inches wide, again, the way I have it laid down right now. So, again, folks, 12 volts, runs on LP gas, a great option for you. This is the Dometic RV LP gas furnace, 35,000 BTU. I'm Steven. Thanks for watching.
Installed and working hours after delivery! Worked great in 1999 Dutchman .
It was easy to get all the info I needed to select the correct heater for my 5th wheel.
etrailer was extremely helpful in navigating the myriad of choices available and determining the correct unit to purchase. We provided the BTU output and dimensions with the ductwork configuration that allowed the salesman to accurately sell the unit that (1) fit in the space provided without modifications (2) matched the BTU output (3) provided auto ignition and worked from the existing thermostat and (4) required minimum modifications for the ductwork.
The old furnace suffered from a cracked heat exchanger which set off the carbon monoxide alarm inside the camper. Carbon monoxide is deadly and could cause a fatality. We took the furnace apart and sent the heat exchanger to a welding shop for repair. The crack was repaired, but other holes were found during pressure testing. The heat exchanger was a
discontinued item for manufacturing and therefore lead to the decision to replace.
The unit cabinet required modification to accommodate a horizontal installation with a floor duct inlet that was different than the configuration provided by the factory. A new duct outlet was cut using a template from the old furnace and using sheet metal shears. The gas line required a slight modification to reroute from a side entrance to the top. The plastic connector and wiring harness were removed from the old furnace and installed on the new furnace with heat shrink connectors. The modifications took a couple of hours to complete, however the unit is installed and working as expected.
The furnace after installation is performing very well. The unit operates from the original thermostat. We have stayed in the camper for a week with temperatures dipping down to 25 degrees Fahrenheit with extremely good comfort. etrailer is highly recommended for anyone shopping for a new RV furnace.
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