Hi, I just got this in the box it does say 14,000 btu and it says 550 sq. Ft. Maybe it’s a misprint not sure that’s why I myself was debating on getting it but since my sister has one she said no it’s good had it for 2 yrs or 3 and so far all good and it’s pretty cold works great a bit noisy but easy to install. I didn’t it myself just to carry it no it’s I think 90lbs! I placed this in the second floor! Just snap some thumbscrew window locks to lock window since the ac is installed on window and now window lock won’t lock since this is here and all should be good. I installed 2 top and bottom and very secure!