Evolution® Packaged HYBRID HEAT® Dual Fuel System

Our Top Technology for Year-Round Total Comfort

Models: 677D

It's an Evolution in energy-smart heating and cooling and the quietest, most efficient system we offer: a packaged solution that delivers cost-effective heat pump power, then switches to gas furnace heat when needed.

Ratings:

• Energy Efficiency7 of 7
• Humidity Control7 of 7
• Durability7 of 7

Key Features

• 15 SEER
• 12 EER
• 8.0 HSPF
• Up to 81% AFUE
• ENERGY STAR® approved
• Puron® refrigerant
• 2-5 tons cooling capacity
• 40,000-130,000 BTUH heating capacity
• 72 dB (quiet as a vacuum)
• Perfect Humidity™ system for perfect comfort
• 2-speed scroll compressor
• Uses Evolution® Control
• Evolution diagnostics
• Loss of charge switch
• Galvanized steel cabinet
• Louvered grille
• 10-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