Keystone KSTAW12B 12,000 BTU 115V Window-Mounted Air Conditioner with "Follow Me" LCD Remote Control High efficiency 11.3 EER 12,000 BTU air conditioner for window-mounted installation Uses standard 115-volt electrical outlet Cools a room up to 550 sq. ft. with dehumidification up to 2.5 pints per hour Electronic controls with LED display allows you to easily select options with the touch of a button