Effective and easy to install although I had to modify the window pieces and the insulation to accommodate a Florida impact window. It is being used in a bedroom that already has central air; used to cool down the room a couple of degrees before bed. Unit is surprisingly loud on all fan settings in spite of online claims. Oddly some functions like the timer are available only on the remote control and cannot be set from the main control panel itself. The remote itself however is easy to use and intuitive. All in all a good unit.