When we were researching Class B (van) RVs, I talked with a guy who had just sold his 2002 CoachHouse Platinum and he lives in south central Colorado where it gets very cold in the winters, and he had gone RVing all winter long with it for all the years he owned it, using filled water tanks, shower, toilets etc....7 yrs...with no problems. He said he bought it because Coach House had better insulation of water tanks etc. for winter use. Since he'd already sold his unit, we ended up buying a Roadtrek, which isn't really insulated for winter use. Therefore I can't verify what he said about the CoachHouse, but he seemed honest. You might want to check it out, if you think you can live with the smaller Class B unit.