Forum Discussion
JRMunn
Mar 31, 2019Explorer
WrightOn,
This can depend on how your furnace circulates air. Mine pulls air out of the trailer into the under-belly where the tanks and water heater are. (I think this is the basis for the manufacturer's claim of "heated tanks".) I have set the furnace at 40 and left the water heater on for mid-20's nights (our lowest temps are usually just a couple of hours) without any freeze damage. But make sure you have enough gas because the furnace might also run during the day or any time that the temperature is below 40.
JRMunn
This can depend on how your furnace circulates air. Mine pulls air out of the trailer into the under-belly where the tanks and water heater are. (I think this is the basis for the manufacturer's claim of "heated tanks".) I have set the furnace at 40 and left the water heater on for mid-20's nights (our lowest temps are usually just a couple of hours) without any freeze damage. But make sure you have enough gas because the furnace might also run during the day or any time that the temperature is below 40.
JRMunn
About Fifth Wheel Group
19,027 PostsLatest Activity: Nov 07, 2025