yes, condensation is a huge problem in those hangars. We had to replace the engine in our J3 this year because of it. A little trick is to run a fan all the time - learned that too late. Works well. I keep my great grandmothers Sellers Hoosier cabinet in the hangar - I have a kitchen area I set up with a frig, microwave and picnic table, (even made my own bathroom with a camping toilet inside one of those beach changing tents). The cabinet looked like it was going to warp, I was very worried about it, so we turned a fan on it all winter and it looks great, kept the condensation off, and an additional fan is on the Cub and the wings and fuselage are dry. Last year was awful for condensation.

Penny