Was having a hard time finding a AC unit that would fit my 20 inch wide windows that was a decent btu. This unit fits and is 12000 btu. Keeps my living room cool with ease. Not to load on high, I can still watch TV with it on. Also the wifi and app worker great for when I'm out of town. Can make sure my cats are happy and cool. Would highly recommend if you have windows with a small width opening.