My wife and I bought a 2nd Windmill, this time the newer (and smaller), 6,000 BTU model. Considering how well it works, how much nicer it looks in the room than our old (non Windmill) unit, and the ease of set-up, I'll never buy another company's AC unit again. Our reason for not getting a second (or third) unit was the size of the space/smaller window in a particular area, and now Windmill has solved that problem too by offering multiple outputs. In fact, we're looking into a third unit for a similar reason right now. No matter which you buy/your AC needs, we can't recommend Windmills enough!