I could not have got a better heater than your Aerotherm heater. I live in Hamilton Montana and have an unheated hangar. I leave it on all winter and everytime I go out to fly I don't have to pre-heat because its already nice and warm. We had 10 below temperatures here in December and the airplane stayed completely warm. It works great on my Citabria and I can take it to my fly in ranch in the Selway Wilderness of Idaho and run it off the generator back there.