4 Ton Two Stage Split-System Heat Pump, Circuit Voltage: 208-230, Hertz: 60, Phase: 1, Department of Energy Guide SEER: 16, EER: 12.5, Stage: Two, Refrigerant: R410A, Connection Size: 3/8"X7/8", Connection Type: Sweat, Factory Charge: 196 oz, Type: Air, Dimensions: 45''H x 35-3/4''W x 35-3/4''D, Weight: 257 lbs