EFFICIENT 13 SEER AIR CONDITIONER1-1/2 THRU 5 TONS SPLIT SYSTEM208 / 230 Volt, 1-phase, 60 HzREFRIGERATION CIRCUIT Copeland Scroll compressors on all models 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-22 refrigerant BUILT TO LAST Pre-painted cabinet finish over galvanized steel Coated inlet grille with 2 spacing standard,alternate models available with grille spacing for extra protection WARRANTY5 year parts limited warranty (including compressorand coil)