Ours are wall mounted, Daikin brand. Maybe its just a cheap brand, it came with the little building. We've had to have them repaired multiple times in the last 4-5 yrs that we've had them, actually replaced one of them. Plus they dont seem to do great in extreme temps, very hot or very cold. Its frustrating, and my thinking is with window units, at least they are easily replaceable and not too expensive if they quit working. If I switch to those, i prefer to have a cutout in a wall for mounting, instead of in a window. We'll see what the repair guy says today.