Re: how to heat?
I have to agree with DL and Hollis ,, for one there is never been built a coach that u can make airtight ,, air is gonna get in somewhere ,, and myself as being an onsight and at shop rv repair center ,, i have done many shrink wrap window coverings and also sold many vent plugs ,,, the furnace will get air no matter what ,, if u look around the cover in the rear bedroom of a DP or even a gas unit u will find very little sealant ,, that makes for air entering the coach ,, also what about the stove vent ,, yes it has a flap that u close on the outside ,, but it is not air tight ,, and as long as the rv is being heated , there is little moisture to build up ,, the shower will cause some ,, but if u use the vent fan it will take it out.... i live in the south where our humidity is around 50% year round and above 90% in the summer ,, and I have not yet had a problem with even my coach ,, as far as mold I own a 40ft Alegro Bus ,,,
As Hollis said ,, and DL also ,,, do not use a non certified heater ,, if it don't have the shut off when it falls over ,,, DON'T BUY IT...
JMO