We bought our 22MLE last month and camped 3 nights in semi-cold weather...mid 30's at night. We had no issues and remained toasty inside. We did, however, book a few trips in advance and next weekend we have a site booked near Alexandria Louisiana. The temps are forecast to get down to 27 on Friday night. I work offshore in the oil & gas industry and am at work currently. I did drain all of my lines and tanks prior to coming to work so I am not concerned about the trailer during the next few days as it is forecast to get down to 11 at home. Has anyone used their 22MLE during freezing temps? Any issues? I'm guessing I could just dry camp Friday night because the temps after that are forecast to warm up to the 30's and 40's the next two nights.