The Importance of System Recalibration
Re-Commissioning with McCownGordon in DFW
Re-Commissioning (Re-Cx) is the practice of reviewing and fine-tuning building systems to restore or improve their efficiency and functionality. It differs from Retro-Commissioning (RCx), which is used for facilities that were never initially commissioned. Re-Cx is geared toward buildings that were originally commissioned but need adjustments due to shifts in how the space is used, occupancy levels, or evolving system performance.
Why might a building require re-commissioning?
As buildings age, their systems often deviate from initial design performance because of wear and tear, changes in how they are operated, and shifts in occupancy patterns. Re-commissioning (Re-Cx) serves to:
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Bring building systems back to peak operational efficiency.
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Lower energy consumption and cut down on utility expenses.
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Boost occupant comfort and improve indoor air quality (IAQ).
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Prolong the useful life of HVAC and electrical equipment.
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Decrease maintenance costs by detecting and resolving problems early.
Re-commissioning Key Benefits
- Energy Savings: Reduces energy consumption by 5-15% annually.
- Optimized Performance: Ensures systems operate as intended and at peak efficiency.
- Cost Savings: Identifies operational inefficiencies that lead to lower utility and maintenance costs.
- Extended Equipment Life: Reduces wear and tear on mechanical and electrical systems.
- Improved Indoor Environmental Quality: Enhances occupant comfort through better ventilation and temperature control.
Financial Impact
- Re-Cx implementation costs range from $0.15 – $0.75 per square foot, depending on the scope.
- Typical payback period is 1-3 years due to energy and operational cost savings.
- Non-energy benefits, such as increased occupant productivity and reduced maintenance, enhance overall ROI.
Brandt Elledge, CCP
Commissioning Executive
