The GREE 12000 Btu window air conditioner delivers the benefits of a high efficiency 12000 BTU cooling system. It also includes a 24-hour programmable timer, LED display, and a convenient remote control. The system is capable of providing comfort to spaces of up to 550 sq. ft., and comes equipped with all accessories required for standard installations in the box. Energy Star version 4.0 rated. Self-diagnosis function. One touch lift out washable/reusable filter. Auto-restart function.