Samsung WindFree™ Standard Heat Pump Split System, 208-230 V, 17.9 A, 27 W, 60 Hz, 1 ph Phase, 3 Fan Speeds, 22000 Btu/hr Heating, 24000 Btu/hr Cooling, 657 cfm Heating CFM Rating, 657 cfm Cooling CFM Rating, 12.2 EER Rating, 20 SEER, DC Inverter Twin Rotary Compressor, R-32 Refrigerant, 54 dBA Heating Sound Level, 54 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, 13 in Overall Length, 37 in Overall Width, 39-5/16 in Overall Height