4 Ton Two Stage Convertible Natural Gas/Electric Packaged Unit, Volts: 208-230, Hertz: 60, Phase: 1, Refrigerant: R410A, Factory Charge: 6 lbs 10 oz, EER: 12, Department of Energy Guide SEER (Range): 16, CFM: 1800, BTU Input: 108,000, BTU Output: 88,000, Cooling BTU: 47,500, Heating BTU: 108,000, Overall Dims: 44-8/9''H X 56-3/23''W X 47-33/50''D, Weight: 522 lbs ***Unit includes a Manufacture Warranty, register your unit with the Manufacturer for details***