Commercial Cool"s 12,000 BTU AC has an EER of 8.9. It is a 4-in-1 unit with AC/Dehumidifier/Fan/Heater features. This unit has 4,500 BTU of heat. The LED control panel has electronic controls for ease of use. As an added bonus, this unit is ultra-quiet at 50/53/56 db. Features include: On/Off, Mode, Fan, Timer, 3 Fan speeds, 3 cooling speeds, air swing, sleep, timer On/Off, 24 hour auto on/off timer, 2 way air direction, single exhaust, 46 pint dehumidifier and auto evaporation for continuous use. Settings 62 F - 88 F.