In Colorado Springs we had a 5' x 9' steam room with a Mr. Steam unit and it produced lots of visible vapor. We tried to duplicate that here in British Columbia with the same size room and steam unit and wall covering material. We get lots of hot moist air here, but very little visible vapor. Except 2 times the unit malfunctioned and produced a lot of visible vapor and also a fair amount of water exited the steam head. So it seems that the unit CAN produce visible vapor, it just doesn't. Does anybody know what controls the visible vapor? Thank you for any information.