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The big thing to lookout for is freezing of the holding tanks and of the dump valves…My Eagle Cap came with a 2” heater duct in the basement area, but due to size, routing and internal hose constrictions, basement temp checks revealed that it flowed almost no air whatsoever… So I ran a new 4” ducted dryer hose from the furnace plenum (inside cabinetry) into the basement and temps regularly remained only about 10 deg F lower than the camper’s interior…

Another thing is to place a 1”x4’x8’ foam sheathing board (from Home Depot) in the truck bed beneath the camper and rubber mat…This offers more insulation value than just a hard rubber mat alone…

3 tons