Samsung WindFree™ Standard Heat Pump Split System, 208-230 V, 10.1 A, 27 W, 60 Hz, 1 ph Phase, 3 Fan Speeds, 21000 Btu/hr Heating, 18000 Btu/hr Cooling, 586 cfm Heating CFM Rating, 586 cfm Cooling CFM Rating, 12.85 EER Rating, 21.5 SEER, DC Inverter Twin Rotary Compressor, R-32 Refrigerant, 51 dBA Heating Sound Level, 51 dBA Cooling Sound Level, Wall Mounting, Steel, Finish: Galvanized/Powder-Coated, -5 to 75 deg F Heating Operating Temperature, 14 to 115 deg F Cooling Operating Temperature, 12-3/16 in Overall Length, 34-5/8 in Overall Width, 31-7/16 in Overall Height