3.5 Ton Single Stage Geothermal Heat Pump, Circuit Voltage: 208-230, Hertz: 60, Phase: 1, Configuration: Vertical, Return Air Option: Right Return, EER: 16.45, Stage: Single, Motor Type: PSC, Refrigerant: R410A, Metering Device: TXV, Factory Charge: 38 oz, Water Loop - Cooling BTU: 37,000/Heating BTU: 38,200, Ground Loop - Cooling BTU: 38,400/Heating BTU: 26,500, Connection Size: 3/4", Dimensions: 39-1/4''H x 21-1/2''W x 21-1/2''D, Weight: 217 lbs