HEAT PUMP HIGH EFFICIENCYY 15 SEER1-1/2 THRU 5 TONS SPLIT SYSTEMENVIRONMENTALLY SOUND R-410A REFRIGERANT208 / 230 Volt, 1-phase, 60 HzREFRIGERATION CIRCUIT Copeland compressors on all models Suction line accumulator factory installed Bi-flow filter-drier included for field installation Integrated solid state control with Time-Temperature Defrost High and Low pressure switches Copper tube / aluminum fin coil EASY TO INSTALL AND SERVICE Easy Access service valves on all models External high and low refrigerant service ports Only two screws to access control panel Factory charged with R-410A refrigerant BUILT TO LAST Baked-on powder coat finish over galvanized steel Coated, weather-resistant cabinet screws Coated inlet grille with 3/8 (10mm) grille spacing for extra protection (hail guard) LIMITED WARRANTY 1 year unit replacement limited warranty 5 year compressor (with an additional 5 years compressor if properly registered) limited warranty to the original purchaser only for owner-occupied dwellings - see warranty certificate for details. 5 year parts (with an additional 5 years parts if properly registered) limited warranty to the original purchaser only for owner-occupied dwellings - see warranty certificate for details.