Hi, We recently bought a home with a Coleman Evcon electric furnce. It seems to run fine, but we noticed there is a switch labeled fresh air that is off. I am not sure what this switch is for & I do not have an owners manual for the furnce. Can anyone tell me what the switch is for & what it does? Thanks

Probably not. It could be an ionizing unit that would oxidize stuff in the air reducing bad odors. If there seems to be a duct to the outside, maybe it opens a damper to pull in fresh air.

Best idea may be to go to Coleman's website and look for a manual. Somebody else here may even do it for you.

I've only seen this switch on trailer units and like labman said all it does is open a damper to the outside air