Mine is kept in a seasonal campgrounds all the time. It is closed up for 8 months winter season a year. I have MaxAir covers on the roof vents. For the first two years we left the roof vent OPEN all winter. No problem. The third year we forgot and left them closed. Have you ever tried to clean mold off of mini blinds??? This year we left them open again and were very pleased to come back to no mold anywhere. I don't know if being up in the mountains of Hinsdale MA at 1450' has anything to do with it but it does work. Local RV repair tech informed me of this. Now if I was down in Florida I would not dream of trying that. My house is locked up tight and the A/C is set at 84 degrees and no body is home. Humidity stays around 50%
While we are here we run the dehumidifier if the heater is on. No wet windows and walls that way. If we don't use the dehumidifier with the furnace all the windows fog up on the inside. Water will run down the wall. It all has to do with where you live.
