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Preferred Series Central Air Conditioner
Up to 15 SEER Sound as low as 67 dB (quiet as a vacuum) DuraGuard™ Plus protection system AeroQuiet™ System II Environmentally sound Puron® Refrigerant 10-year limited compressor warranty 5-year limited parts warranty

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Air Conditioner with Puron® Refrigerant
Quiet, reliable scroll compressor Variety of thermostat options for system control 5-year limited warranty (extended warranties are also available) Wire grille protection package helps prevent coil damage while resisting cabinet scratches and corrosion A filter drier protects the compressor Built to last: galvanized steel cabinet, baked-on powder paint, wire coil guard

Evolution Series Central Air Conditioner
Up to 20 SEER Sound as low as 70 dB (quiet as a vacuum) Superior humidity control Improved indoor air quality 2-stage operation for maximum comfort Evolution™ Control for ultimate performance AeroQuiet™ System II DuraGuard™ Plus system Up to 23 diagnostic checkpoints Environmentally sound Puron® Refrigerant 10-year compressor limited warranty; 5-year parts limited warranty

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