Samsung Single Zone Heat Pump Split System Outdoor Unit, Duct S Series, 208 to 230 V, 21.6 A, 153 W, 60 Hz, 1 ph, 20000 Btu/hr Heating, 18000 Btu/hr Cooling, 841 cfm Heating CFM Rating, 841 cfm Cooling CFM Rating, 10.5 EER Rating, 18 SEER, 8.5 HSPF, Pipe Connection, Inverter Driven, Twin BLDC Rotary Compressor, R-32 Refrigerant, 48 dB Heating Sound Level, 48 dB Cooling Sound Level, Steel, Finish: Galvanized/Powder-Coated, -4 to 75 deg F Heating Operating Temperature, 0 to 122 deg F Cooling Operating Temperature, 34-5/8 in Overall Length, 12-3/16 in Overall Width, 25-1/8 in Overall Height