I have an issue. We have a half base-ment at my house and I want to keep beer stored down there in the dark at 55F. Sadly, the room is 64F when I check the thermometer I've installed. But, if I turn off teh furnace (which also creates our hot water), the temp drops to 55 within an hour. Any way I could some how insulate the furnace to resolve this issue? I was thinking of putting up some heat reflective insulating panels in a square around the furnace but that might cause it to overheat.