We have never camped when the temps were too cold for the fireplace and a $20 ceramic heater in the bedroom to keep us warm. If I was worried about the basement, I think I would manually set the furnace fan on low and the thermostat temp very low and let the furnace fan circulate air in the basement from the living area. No way I could justify the time and expense for this mod.
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Frank and Marilyn
2014 3402RL, Sailun S637/Disc Brakes
2015 F350 CC LWB SRW 6.7L PSD FX4
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