Ivylog wrote:
It sort of sounds like your are hooked up to shore power? Yes/No? If yes go buy a 1500W portable electric heater and use it when the heat pump will not keep up... turn the propane heater OFF. When it gets to 34 degrees outside you need to use the propane furnace to keep your water lines from freezing. Turn the electric heaters OFF. Unhook the outside water line before it freezes.
You do not need to upgrade your furnace, you need to buy a portable electric heater or two. It would help if we knew what rig you have?
I have the 2017 Forest River FR3. I found that the furnace is Suburban brand, but havent determined which model. Is it possible to override the minimum heat setting on thermostat or perhaps replace the thermostat with one that will go lower?