Bryant GB Geothermal Heat Pump.

The Complete Package of Value, Comfort and Extra Energy Savings

The GB model is impressively efficient, even using a single-stage compressor and a multi-speed blower. So, it can help you cut costs today and for the long haul. And with built-in sound dampeners like full insulation and double-isolation compressor mounting, you’ll still enjoy quiet comfort.

  • EER Efficiency Range: 18.5 to 21.7 EER (closed loop); 21.4 to 28.1 EER (open loop)
  • COP Efficiency Range: 3.7 to 4.3 COP (closed loop); 4.3 to 5.2 COP (open loop)
  • Compressor Type: Single-Stage


  • Manage your utility costs with high-efficiency geothermal (efficiency is unit size dependent):  Closed loop cooling EER – Up to 28.1;  Closed loop heating COP – Up to 4.3
  • Multi-speed air delivery aides quiet performance
  • Single-stage compressor operation
  • Insulated cabinet for quiet operation
  • Wide operating temperature range with exceptional cold weather performance
  • Corrosion-resistant coil for durability
  • 2″ MERV 8 filtration

Optional Features

  • Supplemental, domestic hot water generation
  • Internally-mounted auxiliary heat
  • Smart startup add-on for smoother operation 


Efficiency Management 

  • Cooling Efficiency 18.5 to 21.7 EER (closed loop); 21.4 to 28.1 EER (open loop)
  • Heating Efficiency 3.7 to 4.3 COP (closed loop); 4.3 to 5.2 COP (open loop)
  • Heating and Cooling Stages Single-stage operation
  • ENERGY STAR® ENERGY STAR® qualified in all sizes


  • Quiet Levels Quiet operation enhanced by full cabinet insulation and double-isolation compressor mounting


  • Filter Cabinet Built-in for easy filter changes
  • Maintenance Reminders With compatible control


  • Blower Motor Multi-speed
  • Compressor Single-stage scroll (2-5 ton); Single-stage rotary (1.5 ton)
  • Control Board Microprocessor
  • Refrigerant Puron® refrigerant
  • Refrigerant Management Thermostatic expansion valve
  • Protection Corrosion-resistant coil protection for long life


  • Positioning Vertical upflow and horizontal units available


  • Capacity 1.5-5 tons
  • Construction Galvanized steel
  • Paint Baked-on urethane base coat and polyester top coat