In FY20, the Retrocommissioning teams addressed deferred maintenance in the following buildings.

State Farm Center

Two of the four main AHUs and half of the concourse ring may be kept off in mild weather running at 30% fan speed, thus drastically improving the energy efficiency within the building. Initially all 26 AHUs had been scheduled to operate until midnight each night. This was changed to 5pm, with 7 units remaining off during the week. Additionally, an “Event Mode” switch was added to graphics to extend the runtime of the AHUs until midnight whenever the center is being used as a venue. Overall, the Retrocommissioning Team has been successful in reducing costs by over $223,000 as of September 2023, with a projected savings of $250,000 annually, corresponding to a substantial 21% reduction in total energy.

Pennsylvania Lounge Building

Overall, the Retrocommissioning Team has been successful in reducing costs by over $81,700 as of September 2023, corresponding to a 6.5% reduction in total energy consumption within the first year. The highlights from this project include:

• Created trends for fans and VAVS
• Calibrated Melink kitchen hood controls
• Adjusted the VAV minimums to pressurize dining space
• Adjusted C02 sensors
• Fixed graphics issues
• Maintained and calibrated AHU1, AHU2, and VAVs