4 Ton Inverter Stage Split-System Communicating Compatible Heat Pump, Circuit Voltage: 208-230, Hertz: 60, Phase: 1, Department of Energy Guide SEER2: 19.5, Stage: Inverter, Refrigerant: R410A, Connection Size: 3/8"X7/8", Connection Type: Sweat, Factory Charge: 272 oz, Type: Air, Dimensions: 41-1/4''H x 35-1/2''W x 35-1/2''D, Weight: 291 lbs **Compatible With Comfortbridge Technology Units** ***Unit includes a Manufacture Warranty, register your unit with the Manufacturer for details***