4 Ton Single Stage ECM Multi Speed Dual Fuel Heat Pump Packaged Unit, Volts: 208-230, Hertz: 60, Phase: 1, Airflow: Convertible, CFM: 1800, SEER2: 13.4, EER2: 10.6, AFUE: 81%, Refrigerant: R410A, Factory Charge: 148 oz, Metering Device: Piston, Heating High/Low BTU Input: 110,000/81,000, Heating High/Low BTU Output: 75,000/60,750, Unit Dims: 42-1/2''H X 47''W X 51''D, Weight: 525 lbs