More efficient propane furnace

howardwheeler wrote:
I know my camper isn’t insulated like a house, but the furnaces in RVs seem unusually inefficient, even crude. It does seem like someone would improve on what is essentially thirty year old technology. My unit is in fact 18 years old. And it was no state of the art furnace when new. Someone mentioned a two stage unit. That sounds very interesting. A better heat exchanger seems possible. I know two stage units in houses do have greater efficiency. Anyway, every time I get home from boondocking I complain to myself and just thought I’d share my complaint. Does anyone know someone who makes a two stage furnace?

I think you dismiss too readily how badly insulated most are. The space between the floor and the belly is often heated space, effectively serving as duct work, Over the years, major leaks can develop causing your furnace to pull in outside air and expel heated air back outside. A couple of hours with silicon sealer and underbelly tape can make a big difference in the performance of your furnace. Probably more than you’ll ever find by upgrading to a more efficient burner.