The DuraComfort QUIET COOLING AND HEATING FOR LARGE ROOMS: This 12,000 BTU ASHRAE / 8150 BTU SACC portable air conditioner efficiently cools and heats up to 450 sq. ft. At 52dB, this unit is among the quietest in the industry, making it ideal for family rooms, living rooms, and other large sized rooms. Included window kit and hose fit windows.