3.5 Ton Single Stage Geothermal Heat Pump, Circuit Voltage: 208-230, Hertz: 60, Phase: 1, Configuration: Horizontal, Return Air Option: Right Return, EER: 15.9, Stage: Single, Motor Type: PSC, Refrigerant: R410A, Metering Device: TXV, Factory Charge: 42 oz, Water Loop - Cooling BTU: 39,500/Heating BTU: 42,800, Ground Loop - Cooling BTU: 41,200/Heating BTU: 30,000, Connection Size: 3/4", Dimensions: 19''H x 22''W x 54-1/2''D, Weight: 231 lbs