JRscooby said:
"I went back to TimetoRoll's post, and re-read it. First couple of times I saw n't that was not there, so my response was wrong."
I suspected your wrong response was a reading comprehension issue, glad you went back to reread.
Not directing this at Scooby, but many on a public forum, lack spelling, grammar , and reading comprehension skills. Not all members are educated at the same level. While all are important, reading comprehension matters most, before responding. Many times the OP, made by someone asking a question, is vague, lacking needed information, making response difficult, without providing further information.
I think the OP got his answer early on, and good info on propane combustion venting followed.
Marty has mentioned camping in the severe cold, in his trailer, while enjoying skiing with his family. If he had entire family in that trailer, down to zero degrees at times, imagine the amount of moisture created from possibly 6 people breathing. Had to be a fun, memorable, family experience, which is what RVing is all about!
Jerry