We live in a townhouse, with central air that does not reach the top floor, where the master bedroom is. Our city windows are narrow AND 40’ above the ground, so we were reluctant to put in a window AC unit, even if we could find one that fits. This unit cools the whole top floor, is easy to use, and liked being able to use app over the summer. Would turn it on a while before going to bed to cool the room off, without having to go up 3 flights of stairs. Worked all summer with no problems. Wheels make it easy to roll out of the way. Very happy with it.