The thermal package includes 2 things:
1) An extra layer of insulation between all the plumbing and the outside air
2) The ductwork on the furnace blows some heated air into the underbelly space.
So, if you run the TT's own heater to keep the cabin at a comfortable temperature, the insulated underbelly space should stay well above freezing.
You will be spending quite a bit of propane to keep everything above freezing.
Once water freezes in the lines, things break. 30F inside the a cabin that has not been winterized means a new toilet valve and all faucets.
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TT 2015 19RD "TheJayco"
TV 2003 F-350 "Montblanc" - Housebroken chore truck
Sitting in The Cheap Seats.
And proud of it!
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