Fairfax County Government

Guaranteed Energy Savings Contract

This project is an ongoing performance contract with the government of Fairfax County, Virginia. The first phase of this project with this governmental body included the Technical Energy Audit (TEA) of two fitness/recreational “RECenter” facilities. The final Energy Conservation Measures selected by the County were designed and subsequently bid to local contractors for implementation in early 2022.

Phase 1 project highlights include the following:

Cub Run RECenter

  • New 9 million BTU hot water plant with new condensing boilers, pumps, and variable frequency drives (VFDs)
  • Hot water plant renovation includes decoupling of hydronic and domestic water systems for greater control and increased energy savings
  • New heat recovery chiller system to recover waste energy and utilize it to heat the building’s two indoor pools
  • Central plant control upgrades and advanced energy saving operational sequences

South Run RECenter

  • HVAC upgrades throughout the facility, including new pool dehumidification units, packaged rooftop units, and variable air volume (VAV) systems
  • HVAC system upgrade from constant volume to high-performance VAV system to maximize energy savings
  • New Building Automation System (BAS) for all HVAC equipment in the facility

The second phase of this project includes the City of Fairfax Regional Library. Project highlights include:

  • Upgrading the existing lighting system with energy-efficient LED technology
  • Installing occupancy (motion) sensors and time clocks to further increase energy savings and extend lamp life
  • Adding low-flow faucet aerators to all sinks in public restrooms to increase water and sewer savings in the facility
  • Comprehensive commissioning that includes: 
  • ensuring that equipment and systems are installed correctly
  • dynamic testing of equipment and systems 
  • thorough training
  • complete operations and maintenance documentation