Geothermal Energy for HVAC Brings Renewable Energy to Bradley Air Base in CT

Energy Efficient Design Award received for the successful Clean Energy and Engineering project

CLIENT: US National Guard


Energy Savings


On Budget and On Time



Renewable Energy


This project involved accomplishing multiple goals, including to assess, design, and install an energy-efficient geothermal heating and cooling system at a 20,000 square foot administration building.

The Client also wanted to perform an energy audit to reduce energy consumption, while replacing its existing HVAC system with one powered by renewable geothermal energy.


Alares Engineering won an Energy Efficiency Design Award from the Association of Energy Engineers (AEE) for this start-of-the-art geothermal Heating, Ventilation, and Air Conditioning system.

Results included an annual energy savings of 17%. This comprehensive project was completed on-time and on-budget, without additional change orders.


The existing HVAC system at Bradley Air Base, installed in the early 1980s, was undersized for the existing application and grossly inefficient.  After completing a renewable energy Feasibility Study – to test if geothermal was a viable option at this location –  Alares Engineering designed the new HVAC geothermal system, which included a 24-well closed-loop well field, pumps and piping, heat pumps, air distribution, and controls.

Alares’ Engineering design services included systems design and construction documents, specifications, cost estimates, and systems analyses. Additional work included building, utility service, and plumbing system upgrades. The project also involved collaboration and design charrettes with the facility’s Base Civil Engineer to assess the final system requirements.

A building Energy Audit was also completed to evaluate thermal loads and to find ways to reduce total energy use at the facility. Improvements to lower energy consumption would enable the new renewable energy (geothermal) system to provide a greater percentage of the building’s total energy demand.