Well I got the gas furnace I put in my garage last winter finished up. Last year I just pluged it in with an extension cord and it just blew air out the top, not even a thermostat. I put a couple large grills in the plenum on the top, actually wired up a thermostat. I washed my insulated coveralls, although my son borrowed them right affter that. So I guess I'm good to go.......................