Keystone KSTAT12-1C 12000 BTU 115V Through-The-Wall Air Conditioner with Follow Me LCD Remote Control 2016 energy star: 10.5 energy efficiency Ratio (EER) 12,000 BTU air Conditioner for through-the-wall installation (not suitable for window installation) Cools a room up to 550 sq. Ft. With dehumidification up to 2.5 pints per hour Temperature sensing LCD remote control allows you control the temperature from across the room 3 cooling speeds, 3 fan speeds, plus auto cool for cooling flexibility. Refer to the Application guide PDF page 21 attached below in Technical Specification fortroubleshooting steps