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Old 11-05-2012, 05:24 AM   #1
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Furnace

Can anyone see there being a problem in running the LP furnace while the coach is underway? We are considering a trip to upstate NY sometime this month and I am concerned that the dash heater will not keep up.
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Old 11-05-2012, 05:36 AM   #2
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I have a couple of friends that run everything LP while traveling. I personally would not for fear of fire while driving.
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Old 11-05-2012, 06:00 AM   #3
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We've done it for years with no problems.
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Old 11-05-2012, 08:07 AM   #4
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Should be no problem, but just consider that the fan draws on the house batteries and will either require frequent recharging or running the generator and inverter/converter. Watch the propane level, you don't want to run out in the middle of the night. The furnace is a heavy user in cold weather.
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Old 11-05-2012, 08:26 AM   #5
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I would think that if your engine is running (as in on the road?) the alternator could stay up with any loads placed on the system by a furnace. That SHOULD be a non event.

We found the dash heater stays up nicely until the temps get down into the 40's. Then we set the furnace to 60 degrees or so and it kicks on just often enough to keep us from roasting. Never an issue.
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Old 11-05-2012, 06:27 PM   #6
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There is no problem with trying, but it is possible that the rush of air along side the coach will disrupt the air intake to the furnace from outside. If that happens, it will shut down the flame and gas (and do so safely), but the fan continues to run, blowing cool air.

It is very difficult to predict if you will have this air flow problem - it depends on too many subtle factors, e.g. vehicle speed, wind direction & speed, how air flows over/around your roof line, etc etc etc. It might work several times in a row and then not work one day, because of some small change in the operating environment. I'm not trying to scare you away from trying - just letting you know that sometimes the furnace may not provide you with heat.
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Old 11-05-2012, 06:59 PM   #7
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Our coach has a Suburban furnace. In cold weather, we run the furnace all the time, parked or driving. Works well.
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Old 11-06-2012, 08:34 AM   #8
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Quote:
Originally Posted by blackf3504dr View Post
We've done it for years with no problems.
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Old 11-06-2012, 08:48 AM   #9
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Quote:
Originally Posted by expedition1 View Post
Can anyone see there being a problem in running the LP furnace while the coach is underway? We are considering a trip to upstate NY sometime this month and I am concerned that the dash heater will not keep up.
what kind of rv do you have? on our winnebago adventure the coach heater blows hot air from the engine back thru the furnace ducts which also keeps the basement above freezing. not sure what our lowest temp has been, but it has been prety cold with no problems.
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Old 11-06-2012, 02:16 PM   #10
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If you have heat pumps as part of your roof AC unit then running the genny with the thermostat in heat pump mode will relieve any fears you may have of running with propane furnace on.
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Old 11-06-2012, 07:26 PM   #11
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Never had a problem running the furnace while driving. Had a Winnebago once and it had a heater in the back under the bed that ran off the engine coolant. It was like a bus heater in the back worked great. Jim
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Old 11-07-2012, 06:15 AM   #12
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Originally Posted by vraines View Post
Should be no problem, but just consider that the fan draws on the house batteries and will either require frequent recharging or running the generator and inverter/converter. Watch the propane level, you don't want to run out in the middle of the night. The furnace is a heavy user in cold weather.

The alternator Will charge the house batteries. Im surprised you didnt know that
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Old 11-07-2012, 06:48 AM   #13
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We travel a lot in cold weather. Propane is always on, fridge, water heater and furnace always on. Never a problem. That's what they are designed for.
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Old 11-07-2012, 07:05 AM   #14
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Quote:
Originally Posted by George Schweikle View Post
X2, since 1977 with 4 different motorhomes.
For many years with no problems.
Just be aware that you do have a open flame when refueling. I would make sure it is off when doing so. Good luck in the cold weather. Safe trouble free travels.
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