4 Ton Inverter Stage Split-System Communicating Heat Pump, Circuit Voltage: 208-230, Hertz: 60, Phase: 1, Department of Energy Guide SEER: 17, Stage: Inverter, Refrigerant: R410A, Connection Size: 3/8" X 7/8", Connection Type: Sweat, Factory Charge: 118 oz, Type: Air, Dimensions: 39''H x 37''W x 12-5/8''D, Weight: 175 lbs **Compatible With One+ Communicating Units**