From inside (document excerpt):
25HCS3C Comfortt 13 Series Coastal Heat Pump Sizes 18 to 60 1 1/2 to 5 Nominal tons Product Data INDUSTRY LEADING FEATURES / BENEFITS Efficiency S 13 SEER/ 10.8 — 11.0 EER / 8.0 — 8.4 HSPF (nominal) S Microtube Technologyt refrigeration system S Indoor air quality accessories available Sound S Sound level as low as 71 dBA S Compressor sound blanket Comfort S System supports Thermidistatt or standard thermostat controls As an Energy Starr Partner, Carrier Corporation has determined that this product meets the Energy Starr guidelines for energy efficiency.
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Refer to the combination ratings in the Product Data for system combinations that meet Energy Starr guidelines. NOTE: Ratings contained in this document are subject to change at any time. Always refer to the AHRI directory (www.ahridirectory.org) for the most up- -date ratings -toinformation. Reliability S Armor Platet coil fin corrosion protection S Front–seating service valves S Scroll compressor S Internal pressure relief valve S Internal thermal overload S High pressure switch S Loss of charge pressure switch S Filter drier S Balanced refrigeration system for maximum reliability Durability WeatherArmort protection package: S Solid, Durable sheet metal construction S Steel louver coil guard S Color matched ceramic coated cabinet screws S Baked–on, complete coverage, powder paint Applications S Long–line — up to 250 feet (76.20 m) total equivalent length, up to 200 feet (60.96 m) condenser above evaporator, or up to 60 ft. (18.29 m) evaporator above condenser (See Longline Guide for more information.) S Low ambient (down to -20_F/-28.9_C)) with accessory kit MODEL NUMBER NOMENCLATURE 1 N 2 2 N 5 3 A H Product Family H = RES HP 4 A C Tier C=Comfort 5 A/N S Major Series S = R 22 6 N 3 SEER 3=13 SEER