Cool Living AC 12,000 BTU Energy Star Window Mount Room Air Conditioner A/C Unit Cools a room up to 550 sq ft Designed to be installed in a standard double hung window with a window width of between 31" and 43" Remote Control has a signal range up to 20 feet Thermostat range of 64 86 degrees Fahrenheit (cooling only) Programmable Timer runs anywhere from 0.5 24 hrs