im having a pretty bad heating problem as well, my flower room is in the garage and in light hours it gets up to 89 and in the dark it stays at the low 80's high 70's. i'm on kinda a budget so i would rather not get an A/C unit, but how much do you guys think it would hep if i got another inline fan for exhaust because currently my inline fan runs straight through the 1000w to from one vent in the tent to another, b i could attach the exhaust ducting to a vent in the garage because i think the hot exhaust just circulating in the garage is whats making it really hot along with the dehumidifier pumping hot air into the room, but with the exhaust i could turn the dehumidifier way down and help the room cool off that way also. And the garage doesn't get very hot without the room even on hot summer days so i think if i start pumping the hot air outside the intake would only be taking in low 80 degree air max in the middle of the hottest days, so in my vision would keep the room from ever breaking 84. But i was wondering how much you guys think this will really bring down the temperature or if it will only make a couple degree temp difference, and if i will still end up needing an A/C system. any help would be appreciated, thanks.