Loud, inefficient, useless.  The BTU rating has to be wrong. This unit is small and more lightweight than my previous 6000 BTU unit was. It takes a very long time to cool my 12' X 14' room with a standard 8 ft ceiling in a Northwest corner of the house. It is mounted in a small corner window on a block of Styrofoam surrounded by window AC foam on all sides and still rattles and vibrates the entire wall its sitting in. Try sleeping next to that. The vents are just as terrible as well. They have 2 positions, directly forward (parallel to the floor) or down. So, you can NOT blow cold air upward where the heat actually is. Brilliant! I have to run a ceiling fan as well to circulate the cold air because this unit is not capable of directing the air throughout the room. The cord barely reaches the outlet. I wouldn't recommend this unit to anyone. Its a total waste of money.