2.5 Ton Ultra Low NOx Single Stage Convertible Natural Gas/Electric Packaged Unit, Volts: 230, Hertz: 60, Phase: 1, Refrigerant: R410A, Department of Energy Guide SEER2 (Range): 13.4, CFM: 1255, BTU Input: 70,000, BTU Output: 56,700, Cooling BTU: 30,000, Heating BTU: 70,000, Factory Charge: 64 oz, Overall Dims: 35''H X 47-1/2''W X 55-4/5''D, Weight: 390 lbs **Ultra Low NOx Unit is not LP Compatible**