Boise Heating & Air Conditioning

Heating Products

GT-PW Water-To-Water Geothermal Heat Pump

Models: YER

Geothermal Water-to-Water for Radiant and Hydronic Applications

Carrier’s versatile GT-PW series can be applied in a variety of heated water and chilled water applications. Single-stage scroll compressor, Puron® refrigerant. Optional potable hot-water generator. In sizes 3, 5, and 10 tons.

Key Features

  • Up to 16.4 EER, 3.1 COP (closed loop)
  • Up to 23.1 EER, 4.0 COP (open loop)
  • Designed for hydronic and radiant applications
  • Heating and cooling capable
  • Puron® Refrigerant
  • Single-stage scroll compressor for reliable performance
  • Insulated cabinet for quiet operation
  • CXM Unit Performance Sentinel™ Control Board for precision operation
  • 10-year limited warranty

Product Specifications


  • Efficiency (Closed Loop): Up to 16.4 EER, 3.1 COP
  • Efficiency (Open Loop): Up to 23.1 EER, 4.0 COP
  • Limited Warranty: 10-year limited on all parts
  • ENERGY STAR®: As an ENERGY STAR partner, Carrier Corporation has determined that the units achieve efficiencies of 15.1 EER and 3.0 COP or higher to meet ENERGY STAR geothermal closed-loop guidelines. Proper sizing and installation of equipment is critical to achieving optimal performance. Ask your contractor for details, or visit the ENERGY STAR web site.
  • Sound: Quiet operation achieved with fully insulated cabinet and double-isolation compressor mounting system.


  • Controls: Supported Compatible with most thermostats.
  • Diagnostics: Unit Performance Sentinel™


  • Refrigerant Puron®: refrigerant
  • Compressor: Single-stage scroll
  • Heating Capacity (BTUH): 28,000-102,000
  • Cooling Capacity (tons): 3, 5, 10
  • Aesthetics/Construction: Heavy duty cabinet made of galvanized steel, powder coated taupe metallic.
  • Other: Generates hot and cold water for radiant/hydronic applications. Optional domestic hot-water generator.
  • Optional double-wall heat exchangers available.

Contact Western Heating & Air Conditioning

Emails are answered during regular business hours. Monday-Friday 8:00am-7:00pm & Saturday 8:00am-5:00pm. If this is an emergency or you would like after hours service, please call the main number, (208) 319-1736.  Don’t see an appointment that fits your schedule or need service right away? Please call our office at 208-375-6101 and we will do our best to find a time that’s convenient for you! 

Contact Our Boise Heating & Air Conditioning Service at Western Heating & Air Conditioning Today!

(208) 319-1736