4 Ton Variable Speed Split-System Communicating Compatible Heat Pump, Circuit Voltage: 208-230, Hertz: 60, Phase: 1, Department of Energy Guide SEER: 18, EER: 11, Speed: Variable, Refrigerant: R410A, Connection Size: 3/8"X7/8", Connection Type: Sweat, Factory Charge: 8.3 lbs, Type: Air, Dimensions: 39-3/8''H x 31-3/16''W x 31-3/16''D, Weight: 218 lbs