Thor Forums

[TurnerFam]

generally, the running of your furnace should maintain heated levels in your basement/storage and wet bay areas, for your water lines...

Also, keep your water heater on, and run hot water at each faucet and shower each several hours during the overnight, especially. Your propane should work just fine to keep your water hot in it's tank...

A small electric heater, especially one with a thermostatic control, might fit easily into your wet bay, if you can find a way to run it to an outlet within the coach(or an outside one if you have any). Sometimes a slide seal is an easy place to fish an extension cord.
You'll have to run your generator, of course, but it doesn't have to run 24/7, just an hour or so each several hours.

Your furnace should run easily off your 12v battery, at least for most of the overnight if it is fully charged when you go to bed and turn off the generator, but adding another battery would certainly extend your 'off - generator' time. Finding the place for another battery is sometimes the issue, or making sure you have them run in PARALLEL with each other.

A separate small generator might be handy. It might be quieter, can be set farther away from the bedroom, and can run all night/day for a possible cost savings. If it charges your battery and allows the furnace to run most of the overnight, you might find it very effective.
Most folks tailgating at games, I would think, are used to generators, even those running 24/7.

You don't want to try to 'winterize' your coach while you are living in it... you need the water running thru the lines, and the use of the shower, etc. It's not camping, it's using the RV for what it's built for - comfort.