Dave & Cheryl, that is our thoughts too. I think it could be challenging even in a Montana in mid Michigan all winter. What I fear most is the freezing of pipes and the condensation issues. We don't want to spend hard earned money on an RV and then have it ruined due to condensation from all the cold weather it would be subjected to. I realize it may/may not happen and with the attic vents the new Montana's have and even with us using a dehumidifier that is still a real concern of ours. Also, living in even a pretty well insulated RV in mid Michigan weather in zero and sometimes below temps is concerning to me. My husband is an industrial insulator so I do think he could make us pretty air tight and insulate the pipes and skirt us good but still until we tried it we just wouldn't know and we can't afford to make a big mistake.
As I said, I would not hesitate if we knew we would be/stay comfortable in the winter AND we would not do damage to the RV.
All this being said, I felt pretty good yesterday and I went through almost all the house and got rid of a LOT of stuff, some I just tossed but a lot will be put in a a yard sale my cousin is having. Some things are being given to our sons, so I am preparing to downsize whether it be an RV or a mobile home.
Sandi & John & 3 Shih Tzu from Michigan (2 adult sons, 1 DIL)
Considering selling stick house, purchasing a Montana, living in it full-time locally so we can continue to live near my elderly father. Continuing to work full-time. Dreaming of the day we can head south for winter!