In FY22, the Retrocommissioning teams addressed deferred maintenance in the following buildings.

Florida Avenue Residence Hall

The lobby had its constant volume system converted to variable with the addition of six new VAV boxes, occupancy sensors, and a VFD. Adding VFDs to the main housing AHUs allowed the 100% outside air units to be run slower yet sill meet space conditions. Initially kitchen exhaust fans were in operation from 5am to midnight everyday. Using CaptiveAire hood controls, the system was reprogrammed to turn on to 30% capacity with heat, with the ability to ramp up to 80%. This brought the CFM from 20k down to 6k, marking a drastic improvement. Overall, the Retrocommissioning Team has been successful in reducing costs by over $236,800 as of September 2023, corresponding to a substantial 28% reduction in total energy consumption within the first year.