Cools quite well, but is extremely loud even at the Low Fan setting. It was easy to set up and the window adapter is well designed. The airflow output is also good. This particular model is being used in a very small bedroom, so I can only speak to its ability to cool a room that is less than 150 square feet, with a 9 foot ceiling. If you cannot use a window unit (which I cannot it this room), this is a good option, but there is no question that a window unit would be much quieter.