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Old 10-05-2014, 09:23 AM   #1
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Driving with furnace on

Hey all, first fall with our RV, is it OK to drive with the furnace on? It's pretty cold out and would like to use it while we're driving.

Thanks,
Jeremiah
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Old 10-05-2014, 09:27 AM   #2
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I wouldn't even consider driving in cold weather without turning on the furnace.

The furnace doesn't care if your moving or not.
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Old 10-05-2014, 10:25 AM   #3
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On our 97 Allegro bus, the house climate control systems have been in operation when needed while on the road since it was new. (IE genny is running the two AC's in summer and the furnaces during the winter) (usually the hot water heater was on too... on gas if the genny is not running or on electric)

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Old 10-05-2014, 10:36 AM   #4
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X3; Use the furnace on most trips in cold weather.
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Old 10-05-2014, 10:44 AM   #5
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Another thought is to use a 12v lap blanket on those moderate temp. days. Cheap heat at about $12.
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Old 10-05-2014, 10:53 AM   #6
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Prime example why I like the Aquahot system.
Set the thermostat in the coach and it keeps it
there while you drive.
Set up in warmth plus have hot water for a shower.
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Old 10-05-2014, 12:35 PM   #7
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Does the furnace run off the house batteries when not plugged in or do you have to run the generator while driving?
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Old 10-05-2014, 12:40 PM   #8
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Does the furnace run off the house batteries when not plugged in or do you have to run the generator while driving?
Most every coach I have seen run the furnaces off the coach batteries. No need to run the generator since nearly all coaches charge the coach batteries while the engine is running.
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Old 10-05-2014, 12:52 PM   #9
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Most every coach I have seen run the furnaces off the coach batteries. No need to run the generator since nearly all coaches charge the coach batteries while the engine is running.

We run the propane furnace whenever it is needed for comfort....whether driving, in a campground, boondocking or overnighting at a Walmart or in a rest area.
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Old 10-05-2014, 04:55 PM   #10
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Many heating systems use the loop from the engine coolant/heat to keep the coach heating warm. If the engine is running the hot water and the heat are free I just set the therm to what I want and it is hot in the coach.
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Old 10-06-2014, 10:12 AM   #11
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Thanks all for the responses, I ran it yesterday with the heater on and all was fine. I was worried about the air and blowing out the pilot light. I should've figured they would have figure out how to make it so you could drive with the heater on, as they are way to big to heat with just the chassis heater.
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Old 10-06-2014, 10:33 AM   #12
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Red face Something to think about

I hope all of the folks who run their furnaces shut them down "Before" pulling into a gas station. I know the tiny flame of a refrigeration unit doesn't pose much of a danger but the the lighting of a furnace (or water heater for that matter), is a major ignition event. Listen to yours the next time it lights off with that distinct "Woomph". There is a very large flame flaring in there every time it kicks in and it is simple matter to turn it back on when you get back on the road.
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Old 10-06-2014, 11:38 AM   #13
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A couple thoughts...

1. If you have heat pumps, it might be cheaper to run the genny and the heat pumps vs propane furnace. Coupled with dash heat you would probably only need to run the front unit to be comfy. This could also be an advantage if you are on routes where you are supposed to shut off propane valves such as in the NE area with these kinds of tunnel restrictions.

2. YES...turn off the furnace when refueling. (If you don't have something like motor aid that heats your hot water supply, I would also say the same for the hot water heater.)
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Old 10-06-2014, 03:18 PM   #14
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Fueling concerns

Turn off the furnace, hot water heater and do not forget the refrgerator. If you are running on genny then turn it off to refuel, the frig goes to propane automatically. Most like mine, refer exhausts above and a couple of feet toward the front of my coach from the gas filler. Then do not forget to turn it back on when your done gassing up. Would make for some mushy popcycles in a few miles.

Just Another Old Doggy, Don
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