I have had a couple of friends over the years try building this. Both said it worked, but is more effective when you confine it to one room. Especially at night during a heat wave, sleeping can be miserable. This air conditioner really makes sleeping more tolerable. If you don't have AC shoot over to Lowes or Home Depot and give this a shot. If you do, please let me know how it works for you, Stay cool my friends.