Quote:

Really? I always felt dried out after being in a propane heated environment. My eyes were dry and my fingers too.



Keep in mind we're dicussing flamethrower or radiant type heaters where there is no heat exchanger or exhaust to the outside.

Propane ( C3H8 ) will burn completely to form water and carbon dioxide;
C3H8 + 5 O2 ---> 3 CO2 + 4 H2O

Since there is no ventilation the moisture will condense on everything that is colder than it is. Looking at the above equation, imagine burning a 20 pound cylinder of propane in about 3 hours where 57% of the byproduct is water. That's 11.4 pounds of water or close to a gallon and a half !!!