My room cools down in minutes and keeps me comfortable all night. I have only a few complaints, and are relatively minor for a portable AC. 1: The manual is a little confused and would like to have better information about certain things, for example; They say to follow the instructions inside for cleaning ventilation ducts, but no instructions to do so. 2: The remote control runs away, but unless your lazy and can not bother to get up to change the configuration of the same, identifying did not even bother with it. It seems to work independently of the actual unit, so put commands into one, do not translate to the other. 3: The AC makes some strange noises at a time when the manual does a good job of ensuring with. For the first time owner of CA, I was not aware that the noise of running water or gurgling were normal, and a couple of times in panic. If you encounter these without water dripping from the unit, do not be afraid, everything is fine.