Garage AC works well but as others have noted you can't run all three. If you do get the third, check how it is ducted. Ours is not. There are 2 ac ducts in the garage ceiling but they come from the other units. The garage AC has an awkward vent placement. One shoots out directly to the TV, the other shoots out directly to the top bunk. I would prefer (and maybe you can order it this way) it to be similar to the living room/ bedroom units - with a dump air vent downward, and vented to smaller vents in garage. Good luck.