We have two of these air conditioners. Bought one two years ago and when we had to replace another a/c unit we bought a second one. I'd give this a 4 1/2 stars. It cools quickly, is relatively not annoyingly noisy, the filter is easy to clean, the remote is well designed and the unit is a breeze to install. This is also one of the only 6000 btu units I saw that allows you to change the air flow up and down as well as left and right. My only complaint is that the outside vents on the top of the unit are quite large which allow all sorts of matter to drop in. Otherwise we're extremely pleased with it.