Have a 400w HPS closet/tent grow. Is it safe to exhaust hot air into the attic? I keep reading about venting hot/humid air into the attic could cause mold. Is this the same for us living on the coast where its already hot and humid? Also, can I leave my 6" inline fan running in a hot 100+ degree attic without worrying about it? thx
Keep the fan in the room just run the duct into the attic and you may want to invest in an air filter