5 Ton Convertible Low-Nox Natural Gas/Electric Packaged Unit, Volts: 208-230, Hertz: 60, Phase: 1, Refrigerant: R410A, Factory Charge: 125 Oz, EER: 11, Department Of Energy Guide SEER (Range): 14, CFM: 1800, BTU Input: 108,000, BTU Output: 87,500, Cooling BTU: 57,000, Heating BTU: 108,000, Overall Dims: 40-22/25"H X 55-10/37"W X 46-4/5"D, Weight: 485 Lbs