I don't have a TourMaster, but I have never had any problems heating up my coach in cold weather. When parked we just close the lined drapes in the front and I just use one heat pump to heat the coach. Now if you are refering to heating while driving? I normally use the chassis heater, but if it is super cold, then I set the thermostat at 75 for the furnace. It will keep the whole coach warm at that temperature. I have double pane windows all around and the coach underneath is insulated with spray foam two inches thick.
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2002 Gulf Stream Scenic Cruiser
2018 Buick Envision Essence
Neway Freightliner chassis
Aventa II Blue Ox
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