Retro-commissioning (RCx) is a systematic process for identifying less-than-optimal performance in your facility’s equipment, lighting and control systems and making the necessary adjustments. While retrofitting involves replacing outdated equipment, RCx focuses on improving the efficiency of what’s already in place.
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How it Works
During retro-commissioning, service providers make on-the-fly adjustments to existing systems including: controls, air handling and distribution, HVAC, drives, lighting, and the building envelope.
How You Save
Retro-commissioning saves money by reducing energy consumption, extending equipment life, and avoiding unplanned maintenance. Additionally, the process can improve occupant comfort and indoor air quality.
The typical cost to perform a retro-commissioning ranges from $0.25 to $0.30 per square foot and reduces consumption by 15%. The US Department of Energy recommends performing the service every 3 to 5 years.
Retro-commissioning is best suited for buildings with high energy consumption or use intensity (EUI), lower Energy Star benchmark scores, or facilities which haven't performed a retro-commissioning in over 5 years.
When hiring a professional to perform retro-commissioning services, look for the Certified Energy Manager (CEM) or Certified Building Commissioning Professional (CBCP) designations.