What is Retrocommissioning?
Retrocommissioning (RCx) is a systematic process for investigating an existing building’s operations to identify operational improvements, achieve energy savings, and improve occupant comfort. The process focuses on the operation of mechanical equipment, lighting, and related controls and is intended to optimize how equipment operates as an integrated system. Typical issues found and addressed through retrocommissioning include: simultaneous heating and cooling; lighting and HVAC running when not required; controls needing to be retuned; and critical control sensors out of calibration. Retrocommissioning projects can produce savings of 5-20% of total building energy costs, with a simple payback from energy savings alone averaging less than 2 years.
RCx benefits you by:
• Identifying and fixing O&M problems
• Reducing energy and maintenance costs
• Increasing net operating income
• Training operating staff to increase skill levels
• Improving building documentation
For further information, please visit our Resources for case studies
and retrocommissioning resources.
Email us at sandiegorcx@peci.org
(866) 961-6104
“At Marriott, we’ve found that retro-
commissioning saves us time and money. At one property, we expect to save nearly $500,000 annually in energy costs from implementing retrocommissioning measures - and the project will pay for itself in less than one year. We’re using the San Diego RCx Program to continue our efforts in this area.”
-E.J. Hilts, Regional Energy Manager for Marriott (Western Region)
