As a commissioning agent with an established, effective approach to providing professional services, approximately 75% of our public portfolio is represented by work within existing facilities. Blending our knowledge of the various systems in operations today and ability to discern the design and programmatic intent, we apply our perspective to serve in the best interest of the stakeholders.


Leading the system assessment and retro-commissioning efforts, we identified multiple operational adjustments that provided immediate cost savings as well as two more significant energy grant projects that we designed and commissioned on behalf of the owner. These included a heat recovery unit for the high school pool that transferred exhausted heat from the ambient air back to the pool water and the integration of new high efficiency boilers, variable speed pumping systems and associated DDC controls for the 208,000 sf high school.


Leading the EMS controls migration throughout the 65,000 sf school, Hargis was engaged to provide enhanced commissioning services. The commissioning team worked closely with the design team, owner and controls contractor to develop an approach to completing the scope of work within the occupied, operational facility. An abbreviated commissioning plan was drafted based upon quality sampling and contractor input. Technical procedures, functional testing and verification were documented.


Contracted as a third-party commissioning agent for the comprehensive 140,500 sf school with on-site food services, our team was engaged at the onset of the project to support sustainability goals and the completion of energy grant applications. The school is served by an integrated dimmable lighting control and security system activated through to EMS; high-efficiency condensing boilers; a zoned hydronic heat recovery system with VAV controls; a 90% mixed dual heat recovery system serving the classroom wings; dual core HRU serving the gymnasium; and ARUs serving the commons, library areas and athletic wing. We provided functional testing and enhanced commissioning services to meet the terms of the utility rebate. This entailed standard O&M manuals with augmented system manuals that offered set-points, tolerable allowances and methods for re-calibrating the systems to meet comfort, energy use and system performance goals. The documentation was accompanied with training.

System Attributes

Commissioning Services

  • 3 Condensing Boilers
  • 4 Hydronic Pumps
  • 4 Water Heaters & Circulation Pumps
  • 175-ton Chiller
  • 6 AHUs
  • 15 Heating Coils
  • 9 Mini Split AC Units
  • 92 VAV boxes
  • 4 Dual Core HRUs
  • 2 Make Up Air Units
  • 20 Exhaust Fans
  • Refrigeration Flow
  • Lighting Control Interface to EMS (security)
  • HVAC Interaction w/ Fire Alarm System
  • Developed commissioning plan & reviewed with the design team
  • Reviewed design development level documents & identified additional opportunities for energy savings
  • Effectively communicated the PSE grant rebate requirements
  • Provide Functional Performance Tests procedures/witness
  • Create trend reports
  • Post-occupancy systems trending reports
  • Review contractor training plans and design team training plans for occupants
  • Review maintenance & operations manuals
  • Provide final Commissioning report, WSSP narrative & PSE documents