Evolution® Packaged Hybrid Heat® Dual Fuel System

Model: 677D

Our Top Technology for Year-Round Total Comfort

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.


  • Up to 15 SEER
  • Up to 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)
  • PerfectHumidity™ 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


  • RATINGS
    Energy Efficiency  
    Humidity Control  
    Durability  
    Owner's Manual

    pdf   677D Evolution 15 SEER Single Packaged HYBRID HEAT System with Puron Refrigerant Size 24-60

    Consumer Brochure

    pdf   Commercial Packaged Products Consumer Brochure

    pdf   677D Packaged HYBRID HEAT Dual Fuel System with Puron Refrigerant Consumer Brochure

    pdf   HYBRID HEAT Dual Fuel Small Packaged Systems Consumer Brochure

    pdf   Bryant Light Commercial Split Systems: Dependable Comfort with Flexible Systems

    Warranty Card

    pdf   Limited Warranty for Small Packaged AC Small Packaged Heat Pump or Small Packaged Air Conditioner & Gas Furnace Small Packaged HYBRID HEAT Dual Fuel System 1-1/2 - 5 Tons Cooling Capacity and up to 130 000 BTUH Cooling Capacity

    pdf   Limited Warranty for Small Packaged AC Small Packaged Heat Pump or Small Packaged Air Conditioner & Gas Furnace Small Packaged HYBRID HEAT Dual Fuel System 1-1/2 - 5 Tons Cooling Capacity and up to 130 000 BTUH Cooling Capacity

    pdf   Limited Warranty for Small Packaged AC Small Packaged Heat Pump or Small Packaged Air Conditioner & Gas Furnace Small Packaged HYBRID HEAT Dual Fuel System 1-1/2 - 5 Tons Cooling Capacity and up to 130 000 BTUH Cooling Capacity

    pdf   574B 604B 674B 704B Small Packaged Products Warranty

    pdf   577B 607B 677B 704C 707B 707D 607D 577D 577D Small Packaged Products Warranty


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