How X-160 Air Circulation works when all doors/windows close
I am a little bit worried everytime when we close all door and windows at night. I know there must be some vent (not the vent in the shower) and some air inlet somewhere, but I don't really know how the fresh air get into the trailer. The air conditioner (not running) can somehow be used as vent? or the furnace (not running) can be used as inlet? or just the leakage of the door/window is good enough to provide fresh air for people sleeping inside. Can anyone explain how it works? Thanks in advance.