I agree with everyone's comments. It normally only stays below freezing for an hour or so at a time, and that doesn't cause a problem, but this week it has been below freezing for several hours in a row.

Although, I don't think anything would freeze in the coach, when I lay down at night, I get that nagging feeling of "what if it does". My solution so far is that I brought the coach home and plugged it in and turned on the bay heater just a tiny bit. I just thought if I could drain all the fresh water out of the tank and lines I would be safe. I will do some more looking, and I guess if I don't find a drain, I will pump it out with the 12V pumps. Thanks to all.