Carl n Susan wrote:
Check out this similar topic here on RV.net concerning propane heaters:LPG Portable heaters
Also this link is referenced in the above posting, but in case you miss it there, it is interesting enough to link to here: RV Heater
WOW some real bad information in this from the second link!!!
COMPARISON OF RV FURNACES AND VENT-FREE HEATERS
RV PROPANE FURNACES
Propane uses oxygen as it burns and gives off moisture as a by-product. Therefore it has the potential to use up all the oxygen in an enclosed space and kill any living, breathing occupants while creating a layer of condensation on the insides of windows. Yikes! To accommodate these unpleasant aspects of propane heating, conventional RV propane furnaces use a large blower system to bring in outside, oxygen-rich air. In turn, they vent the moist, oxygen-depleted air from inside the rig to the outside. Circulating the air this way keeps the oxygen level in the air fairly constant and significantly reduces the build-up of condensation on the insides of the windows, as the moisture gets blown outside along with the exhausted air.Well an RV furnace the air drawing in for combustion, ONLY travels trough the combustion chamber and exist the exhaust vent! It is never introduced inside the RV itself. The heat is exchanged to the inside air by it passing over the combustion chamber.
