Evolution Packaged Hybrid Heat Dual Fuel System (Best)

• 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
• Loss of charge switch
• Galvanized steel cabinet
• Louvered grille
• Stainless steel heat exchanger with a lifetime limited warra...nty
• 10-year limited warranty on compressor
• 5-year limited warranty on entire unit

Preferred™ Packaged HYBRID HEAT® Dual Fuel System (Better)

• 14 SEER / 12 EER (677C) (pictured above)
• 13 SEER / 11 EER (674B)
• 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)
• Perfect Humidity™ for perfect comfort
• Scroll compressor
• Loss of charge switch
• Galvanized steel cabinet
• Wire grille (677C)
• Louvered grille (674B)
• Uses Thermidistat™ control
• 10-year parts limited warranty upon registration; Aluminized... heat exchangers 15-year parts limited warranty upon registration; Stainless steel heat exchanger lifetime parts limited warranty upon registration; Copper coil 5-year parts limited; Tin plated coil 10-year parts limited warranty (677C)
• 10-year parts limited warranty upon registration; Aluminized... heat exchangers 15-year parts limited warranty upon registration; Stainless steel heat exchanger lifetime parts limited warranty upon registration; Copper coil 5-year parts limited; Tin plated coil 10-year parts limited warranty (674B)