The GREE super silent 8000 Btu window air conditioner delivers the benefits of a high efficiency cooling system equipped with new super silent wind channel technology. The result is a whisper quiet cooling system capable of providing comfort to spaces of up to 400 sq. ft. The air conditioner comes equipped with all accessories required for standard installations within the box. Super silent wind channel technology. Energy Star version 4.0 rated. Auto-restart function. Auto evaporative function.