Frosty69
Well-Known Member
So its starting to get a little cold during the evenings in my green house and my greenhouse is currently close to my homes furnace exhaust which spits out a lot of warm air. Im just wondering if i could use this free warm exhaust air and hopefully heat my small greenhouse with it. Has anyone done this? Im afraid I'm going to kill my plants with some kind of bad engine exhaust coming from my furnace.