I know this is an older thread - just getting caught up in the PUP community after a long winter... We live in central PA and store our PUP in our garage that is semi-heated. (1st floor of our townhouse) Our first year we did winterize but I kept a log of the temperatures in the garage throughout winter and since the temperature never got below 50* we opted to not winterize this year. This winter was much milder for us this year so we are happy with our decision.
2014 Forest River/Flagstaff M.A.C. 228
2017 Wrangler Unlimited Sahara, Factory Max Tow Package