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Green building certification programs have become integral in promoting sustainability and energy efficiency in the construction and operation of buildings. While these programs offer valuable insights into environmental performance, they can fall short when it comes to addressing day-to-day operational efficiency. Retro-commissioning (RCx) can be a complementary tool that can identify and implement energy-efficient measures cost-effectively.
Retro-commissioning is a process that optimizes existing buildings by implementing operational improvement measures. It focuses on fine-tuning building operations and avoiding costly capital recommendations. RCx can identify actionable measures that enhance energy efficiency, often without significant upfront costs. Some examples of RCx measures include adjusting control set points, optimizing control sequences, and calibrating HVAC sensors.
The RCx process typically consists of three phases: investigation, implementation, and verification. During the investigation phase, the building's equipment, control sequences, and data are thoroughly examined. The implementation phase involves making the necessary adjustments or corrections, while the verification phase ensures that the implemented measures result in actual energy savings. This process can often be completed in less than a year.
