The 2 units I bought were both damaged in shipping with a crack in the front plastic. They do work as advertised and their noise level is a little bit higher (registering at about 55 dB) than what promised. This model is efficient for a portable air conditioner unit and it is very good at heating -- it is at least 2 times as efficient as a space heater for that. If you need to both heat and cool and in particular heat -- this unit is a very good option. If you need to just cool, most window AC units will do better.