We have traveled with the TM and camped down into the teens. No issues. We keep it winterized.
Not sure about -20f. I don't think I would want to warm up a -20 camper after setting it up. I would do a motel if it was -20f
__________________
Art & Joyce
Current camper: Motor Home
Previous: 2009, 3023-QB and 2003 2720
|