Design Solution · HVAC & Energy
Design Solution · Dream about it
Retuning HVAC controls and recommissioning to match real demand.
Existing HVAC plant and BMS controls are re-tuned and recommissioned to match real occupancy and demand, cutting gas and electricity even as occupancy rises. Recommissioning recovers performance lost to drift over a building's life at low cost.
BMS controls drift over a building's life as occupancy patterns change, setpoints creep and sensors fail or are overridden, and the cumulative effect is that HVAC systems increasingly serve a building that no longer exists as designed — running plant at times and to conditions the actual occupants do not need. Re-tuning controls and recommissioning to real occupancy profiles is the lowest-capital route to meaningful energy reduction, and independent studies of commercial buildings routinely find 15–30% savings available through controls optimisation alone before any plant replacement is considered. This record is claimed only with no measured data attached. The value proposition is strong because the cost-to-saving ratio is typically among the best of any building energy intervention, and it is available in virtually every occupied building regardless of age or system type. The open risk is permanence: recommissioned settings drift back unless there is an ongoing building performance management regime with someone accountable for maintaining optimisation, and a one-off recommissioning exercise that is not embedded in an operational management framework typically shows declining savings within two to three years.
#recommissioning #bms #controls optimisation #operational