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

Levis Faculty Center 

The previous constant volume system was converted to a variable air volume system. In this transition, the team added 10 VAV boxes to the building, all of which are located on the fourth floor. Additionally, the team added DDC controls to occupancy sensors to achieve significant energy savings.There were also several issues with the lavatory and drinking fountains that were corrected by the team, including malfunctioning faucet handles and improper draining. Overall, the Retrocommissioning Team has been successful in reducing costs by over $163,500 as of September 2023, with a projected savings of $20,000 annually, corresponding to a substantial 28% reduction in total energy. 

Bielfeldt Admin Building

Retired existing building temperature control system and replaced with an Alpha system. This improved the visibility of the building systems. Reduced airflow noise in the athletics directors office, a problem for a long period of time. Maintained the VAV boxes, over 50% of them had operating problems. Repair or adjust reheat coil controller for makeup air in VRF served areas to provide 66-degree makeup air. Provide separate t-stats or provide a dead band such that the mechanical room doesn't vacillate between heating and exhaust. RCX installed EP main for min and max OA, RA, and EA dampers that energizes on supply fan damper command. Install occupancy sensor to run the exhaust fan (EF-B) serving the locker rooms, shower rooms, and exercise rooms for a specified
amount of time. Modify diffusers and airflow to reduce over ventilating and control room airflow in locker rooms. Overall, the Retrocommissioning Team has been successful in reducing costs by over $112,600 as of November 2023, with a projected savings of $25,000 annually, corresponding to a substantial 47.7% reduction.

Ikenberry Dining Hall

Melink kitchen exhaust hoods had failed and were constantly exhausting air at full speed. This required the team to coordinate with kitchen staff to understand operation, adjust temperature settings, and replace failed IR sensors. Fan powered boxes with malfunctioning motors had their fans removed to convert them to traditional VAVs. Exhaust air dampers were separated from return dampers to allow the unit exhaust to be turned off and pressurize the building. In total, the Retrocommissioning Team has been successful in reducing costs by over $616,000 as of September 2023, with a projected savings of $120,000 annually, corresponding to a substantial 49.55% reduction in total energy consumption in the first year.

Nugent Hall

The DOA units were scheduled off during summer, fall, spring, and winter breaks. Humidity will not be affected as the exhaust fans will not be in operation during these times. To allow the DOA to remain off during these breaks, an exhaust fan was installed in the RA apartment to give an exhaust boost during showers. Many FCU issues have been resolved. These issues include disabled alarms, incorrect fan status being displayed, bro- ken actuators, and reversed heating valves. Overall, the Retrocommissioning Team has been successful in reducing costs by over $210,500 as of September 2023, with a projected savings of $90,000 annually, corresponding to a substantial 27.88% reduction in total energy.