Mitsubishi Electric Single-Zone Heat Pump Outdoor Unit, Model: MSZ-GS, 208/230 V, 3770 W Power, 60 Hz Frequency, 1 ph, Heating BTU Rating: 21600 Btu/hr, 35200 Btu/hr, Cooling BTU Rating: 33200 Btu/hr, Heating CFM Rating: 1328 to 1950 cfm, Cooling CFM Rating: 1024 to 2191 cfm, 8.8 EER, 18.4 SEER, 8.5 HSPF, Flared Connection, R-410A Refrigerant, 1/4 in Liquid Line, 5/8 in Suction Line, 25 A Fuse, Heating Sound Level: 57 dBA, Cooling Sound Level: 55 dBA, Wall Mounting, Munsell, 34-5/8 in Overall Length, 33-1/16 in Overall Width, 13 in Overall Height, Additional Information: 450 rpm Low, 900 rpm Medium, 900 rpm High Cooling, 560 rpm Low, 800 rpm Medium, 800 rpm High Heating