4 Ton Single Stage Convertible Natural Gas/Electric Packaged Unit, Volts: 208-230, Hertz: 60, Phase: 1, Refrigerant: R410A, Factory Charge: 107 oz, EER2: 10.6, Department of Energy Guide SEER2 (Range): 13.4, CFM: 1800, BTU Input: 60,000, BTU Output: 48,600, Cooling BTU: 46,250, Heating BTU: 60,000, Overall Dims: 42-1/2''H X 47''W X 51''D, Weight: 518 lbs ***Unit includes a Manufacture Warranty, register your unit with the Manufacturer for details***