If I didn't have to type so much I could be very specific about the serious degree of noise (suppose to be "whisper quiet) fans sounds like eight powerful computers all running at top clock speeds, and the heat being blown out from the unit, unable to channel it elsewhere thus heating up the tent to nearly 88 degrees. Granted, mine is overkill in its size but I was told things that just weren't accurate, thinking raising it 12-18 inches was enough...it isn't try 24-30 inches away from the tips...so I am sure that is the problem just too powerful for the small area. I should have bought the smaller unit just under the big bitch I got. Then I think all would have been perfect. I am going to sell it on Ebay later tonight/tomorrow.