From inside (document excerpt):
24ABB3 Baset13 Air Conditioner with Puronr Refrigerant Product Data INDUSTRY LEADING FEATURES / BENEFITS Efficiency S 13 — 14 SEER/10.55 — 12 EER S Microtube Technologyt refrigeration system S Indoor air quality accessories available Sound S Sound level as low as 75 dBA S Sound level as low as 74 dBA with accessory sound blanket Comfort S System supports Thermidistatt or standard thermostat controls Reliability S Puronr refrigerant — environmentally sound, won’t deplete the ozone layer and low lifetime servce cost.
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the environmentally sound refrigerant S Scroll compressor S Internal pressure relief valve S Internal thermal overload S Filter drier S Balanced refrigeration system for maximum reliability Durability WeatherArmort protection package: Carrier’s Air Conditioners with Puronr refrigerant provide a collection of features unmatched by any other family of equipment. The 24ABB has been designed utilizing Carrier’s Puron refrigerant. The environmentally sound refrigerant allows you to make a responsible decision in the protection of the earth’s ozone layer. As an Energy Starr Partner, Carrier Corporation has determined that this product meets the Energy Starr guidelines for energy efficiency. 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. S Solid, durable sheet metal construction S Dense wire coil guard S Baked–on, complete outer 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 80 ft. (24.38 m) evaporator above condenser (See Longline Guide for more information.) S Low ambient accessory kit (down to -20_F/-28.9_C)) with Warranty S 5 year limited compressor warranty.