At Keystone, your family's comfort starts here. The Keystone Energy Star 5,000 BTU window air conditioner with "Follow Me" remote control is an economical choice for cooling a room up to 150 square feet. This energy-saving air conditioner features electronic controls with LED display and a temperature sensing LCD remote control, allowing you to conveniently see, set, and maintain the room temperature from across the room. Money saving features include energy saver mode, sleep mode, and a programmable 24-hour timer. Plus quiet operation (50.