My 2002 Monaco Windsor is parked at home in 0 degree weather. I turned the heat pump on 40 degrees to keep it thawed. I just went out to check and I found no power. I've got 50 amps going to the m/...
Heat pumps don't work at 0F and I would not leave them on at 0F. In fact I have 2 dedicated 20A circuits for ceramic heaters. The water area includes both a DC heater and AquaHot register. This leaves the fresh water tank which is only protected by the AquaHot.
Therefore in really cold weather I'd use the electric heaters and Aquahot or winterize.