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About Water Source Heat Pump GeoThermal Systems

#Geothermal products

Benefits for Building Owners & Managers

  • • Delivers greater occupant comfort
  • • Quiet operation
  • • Low life cycle costs
  • • Reliable operation
  • • Supports LEED® certification

Benefits for Consulting Engineers

  • • ASHRAE 90.1 compliant
  • • Quiet operation
  • • Reduced energy consumption
  • • High efficiency
  • • Plug-and-play design

Benefits for Contractors

  • • Extensive factory installed options
  • • 100% Run tested
  • • Easy to start up and operate
  • • Easy to Service
  • • Proactive Diagnostics

Aquazone GeoThermal Systems

Carrier Aquazone™ Water Source Heat Pumps (WSHPs) are a great solution for year-round multi-zone heating and cooling. Our wide range of WSHP models deliver efficient, reliable temperature and humidity control for a variety of applications. Utilizing the earth’s natural resources along with our engineered operating flexibility, Aquazone heat pumps deliver Energy Efficiency Ratios (EER) up to 37. Carrier WSHPs let you put heating and cooling capacity exactly where and when you need it. Aquazone units are available in numerous sizes and configurations with several standard and factory-installed options allowing you to configure systems for today as well as for expansion in the future.

How it Works

WSHP systems are designed to take advantage of the fact that the earth’s resources (ground or water) remain at a relatively constant temperature at a certain depth. Instead of using a conventional heat source, the ground water can be used as the heat sink for absorption or rejection of heat.

Geothermal Earth Loops come in several different configurations depending on space availability and soil properties. Geothermal heat pumps can work with closed or open loops. Open loops work best with well, river, or lake water applications. Closed loops can be installed in vertical or horizontal ground configurations, or submerged in a pond or lake.



Carrier Aquazone heat pumps are designed to reduce utility costs, especially under part-load conditions and over a lifetime of operation. HFC Puron® refrigerant (R-410A) two-stage models offer Energy Efficiency Ratios (EERs) up to 22.2 in boiler/tower applications. High-efficient heat pumps in a geothermal application, where they simply move heat within the earth that already exists can achieve EERs up to 37 along with 3.5 to 5 units of energy for every unit used to power the heat pump system.


Built with heavy-gage, galvanized steel sheet metal cabinets and featuring a corrosion-resistant, powder-painted finish, Carrier Aquazone WSHPs are durable and long lasting. All water and air coils, plus drain pans are available with coating options to protect against corrosion and airborne chemicals, plus state-of-the-art compressor technology yields the highest efficiency and reliability.


Carrier’s WSHP Open Controller features plug and play connectivity to the Carrier i-Vu® Open Control System. The Carrier i-Vu Open Control system combines state-of-the-art Carrier equipment, plug-and-play controllers and the powerful, web-based i-Vu user interface to form a cohesive, intuitive, and fully integrated building automation system (BAS). WSHP Open also includes advanced independent fan speed and compressor operation and proactive diagnostics to ensure reliable and efficient operation.


Advanced engineering has made Carrier Aquazone heat pumps among the quietest on the market. Noise-reduction features such as cabinets with dual density acoustical insulation, low-speed blowers and ECM or constant torque motors plus fan motor insulation are standard on Aquazone units. The isolated compressor railing system minimizes vibration transmission, and most units feature isolated compressors for additional sound protection.

Indoor Air Quality

While efficiency and environmental demands are shaping the Water Source Heat Pump industry, indoor air quality is also an important part of the equation. Carrier offers a full variety of outdoor air options that can introduce conditioned ventilation air into a WSHP system. In conjunction with our outdoor air options, utilizing Carrier’s WSHP Open controller and CO2 monitoring allows Carrier’s heat pump systems to deliver the right amount of conditioned ventilation air at the right time while lowering the overall system size and usage costs.


Carrier Aquazone heat pumps give you unprecedented flexibility with many sizes, configurations, standard features, and factory-installed options.

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