Even tho I run a Class A gas motorhome, low temps are low temps...and plastic pipes are plastic pipes.
I (we) have traveled or overnighted in temps as low as 14 degrees. Knowing our RV is really not made for these kind of temps, what we did was:
(Overnight):Turn on the propane heater.(Presuming you have a full or almost full propane tank(s).
Using a space heater, put it on the floor, open the kitchen cabinets and let that run all nite....to keep the piping under there from icing up.
Run a trickle of water in the kitchen sink and bathroom sink. Mix the hot and cold as well as you can.
Now that is for overnight. When on the road, no problems that I encountered, the dash heater kept us comfortable....at least for the 4 hours we were on the road until we hit the Phoenix AZ area...where temps were around 70.
Arrived at our destination intact...or so we thought. Set up...all was well. First day...all was well. Next morning, the toilet supply hose blew out.Like it was cut with a knife...about 2 inches long. Niagara Falls outside the trailer, bathroom carpet soaked. I guess ice formed in there....and that was a good 2 feet from the outer wall. Cannot explain it. Anyway...Home Depot in Mesa was open at 7AM...got a garden hose cut it to size and made the replacement. Took 3 days for the carpet to dry out. So....y'never know.
