Sub-freezing weather and Exposed Tanks.
We are about a week into a three week fishing trip in Montana. We are currently in Missoula. Night time temperatures are forecast to be in the low 20's all next week. Our black and gray tanks a...
Forum Discussion
One thing to bear in mind is the line that feeds water from from the freshwater tank to the pump. Ours is above all the tanks, and no way to reach it. We have tank heaters and a heat tape wrapped around the (long) drain tube from the freshwater tank, and our pump & accumulator are in the same compartment with the water heater (something I wish was true of all RVs!), so even with exposed tanks we have been able to camp down to & just below freezing (overnight) temperatures - of course, temperatures rose at least to the upper 40s in the daytime. However, one night in mid-October in West Yellowstone, our water line to the pump froze up - turned out the overnight low was 16! So we now know our water system's tolerance. (Fortunately nothing broke, and the line thawed out over the next day.)
