4 Ton Split-System Heat Pump Circuit Voltage: 208-230, Hertz: 60, Phase: 1, Department Of Energy Guide SEER: 14.5, Stage: Single, Refrigerant: R-410A, Connection Size: 3/8"X1-1/8", Connection Type: Sweat, Factory Charge: 7 Lbs 8 Oz, Type: Air, Dimensions: 39-1/2"H X 35-1/2"W X 35-1/2"D, Weight: 226Lbs No Mfg Badge Regional Efficiency Standards Are Now In Effect. Make Sure You Adhere To All National, State, And Local Efficiency Standards In Effect In Your Region.