Very good video on Buddy Heaters

agesilaus wrote:

They claim major propane savings since RV furnaces blow a lot of expensive hot air out of the RV and suck in lots of cold air for the furnace combustion.

We haven't camped in a cold climate enough to worry about it tho.

The combustion chamber is located such that the cold air input does not enter the RV, neither does the humid air created as a result of burning propane. If you use one of the buddy heaters in an RV might just as well use the propane oven to heat with. Just be prepared to get things incredibly damp, or watch the heat go out a window that needs to be open to reduce humidity. My opinion...