Existing buildings: recommissioning

Recommissioning is "a systematic process for investigating, analyzing, and optimizing the performance of building systems through the identification and implementation of low/no cost and capital intensive facility improvement measures and ensuring their continued performanceFootnote 1." This means undertaking a review of your building's equipment and systems to see if they are operating at optimal capacity, with a focus on how the systems function together.

Generally, the term "recommissioning" refers to a periodic re-application of the commissioning process and is ideally performed on a regular schedule (usually every three to five years). It is also performed when a significant change occurs in building occupancy or ownership, or if building performance diminishes.

Other types of existing building commissioning include retrocommissioning (applying the commissioning process to a building that has never undergone commissioning) and ongoing commissioning (performing commissioning activities on a continuous basis to achieve perpetual performance improvement).

For simplicity's sake, "recommissioning" will be used as a general term to refer to all commissioning activities performed on existing buildings.

For more information, visit our Commissioning/Recommissioing resources page.