Hi Doug,
I sometimes find your posts a little aggressive.
SDparkowner came up with a MUCH better reason to not use propane. I.E. CO production. I missed that factor in the OP's post.
For my RV, when I was storing, I had an 875 amp-hour battery bank and 256 watts of solar. That would have been sufficient to run the furnace for quite a long power failure. My duty cycle on the furnace to keep the RV above freezing would be about 6:1 at 0 C (32 f). i.e. ten minutes of run time per hour.
I'm well aware of just how much 120 volt power would be required to keep my own 28 footer from freezing up. But again that may not be of use to the OP as my RV has all sorts of extra cold weather modifications.
I agree with you that keeping an RV at 20 C (68 f) takes a lot more energy than to keep it from freeze up. But my RV furnace would certainly not run constantly at 0 c (32 f). In fact it does not run constantly even at -37 c (-34 f).
In his shoes (or mine) I would make the effort to winterize between trips.
dougrainer wrote:
pianotuna wrote:
Hi,
If you decide to go the electric heat route, then do leave the propane furnace "on" but at a low setting. That way if the power does fail the RV won't freeze.
Really? I have to explain to MY customers why this is not a good idea. You leave the furnace on in case the 120 power fails. OK, HOW long do you expect the BATTERIES to last when you have lost power and it is BELOW 32 degrees and that means the furnace will run almost 24/7.