Evolution Packaged Hybrid Heat System Enjoy the benefits of cozy gas and cost-saving electric heat Model: 677B Key Features Up to 15 SEER Up to 12 EER 8.0 HSPF Up to 81 AFUE 15 SEER and 14 SEER models are Energy Star approved Puron® Refrigerant 2-5 tons cooling capacity 40,000-130,000 BTUH heating capacity 72 dB (quiet as a vacuum) PerfectHumidity® for perfect comfort 2-speed scroll compressor Uses Evolution™ Control Evolution diagnostics 10-year limited warranty on compressor 5-year limited warranty on entire unit Click here to read more. Preferred Packaged Hybrid Heat System Model: 674B Key Features 13 SEER 11 EER 8.0 HSPF Up to 81% AFUE Puron® Refrigerant 2-5 tons cooling capacity 40,000-130,000 BTUH heating capacity 72-78 dB (quiet as a vacuum) PerfectHumidity® for perfect comfort 2-speed Scroll compressor Loss of charge switch Galvanized steel cabinet Louvered grille Uses Thermidistat™ control 15-year limited warranty on heat exchanger 10-year limited warranty on compressor 5-year limited warranty on entire unit Click here to read more.

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