Infinity Series Central Air Conditioner Models: 38TDB Ratings Energy Efficiency Quiet Level Durability Key Features Up to 21 SEER 70 db Superior humidity control Improved indoor air quality Two stage operation for ultimate comfort Infinity™ Control Board for maximum performance Silencer System II™ WeatherArmorUltra™ System Up to 23 diagnostic checkpoints Environmentally sound Puron® Refrigerant 10-year compressor limited warranty 5-year parts limited warranty Click here to read more. Comfort Series Central Air Conditioner Models: 38TRA Ratings Energy Efficiency Quiet Level Durability Key Features Up to 14 SEER As low as 73 db (quiet as a dishwasher) WeatherArmor ™ louvered coil guard Environmentally sound Puron® Refrigerant or R-22 Refrigerant 10-year compressor limited warranty 5-year parts limited warranty Click here to read more. 38CKC Energy efficient at 10.0 SEER Government required energy efficiency Freon 22® refrigerant 5 year parts limited warranty Read more about 38CKC

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