Mitsubishi Electric Heat Pump, M Series, 208 to 230 V, 16 A, 3410 W Power, 60 Hz Frequency, 1 ph, Number of Fan Speeds: 5, Heating BTU Rating: 18000 Btu/hr, Cooling BTU Rating: 15000 Btu/hr, Heating CFM Rating: 1730 cfm, Cooling CFM Rating: 1653 cfm, 13.5 EER, 21.8 SEER, 11.6 HSPF, DC Inverter Driven Twin Rotary Compressor, R-410A Refrigerant, 1/4 in Liquid Line, 1/2 in Suction Line, 20 A Fuse, Tonnage: 1.25 ton, Heating Sound Level: 55 dBA, Cooling Sound Level: 51 dBA, Floor Mounting, Heating Operating Temperature: -13 to 75 deg F, Cooling Operating Temperature: 14 to 115 deg F, 13 in Overall Length, 33-1/16 in Overall Width, 34-5/8 in Overall Height