During a LEED project, when does commissioning typically take place?

Commissioning typically takes place during the substantial completion phase of a LEED project, as this is when the building systems are fully installed, and their performance can be verified against the specified design criteria. This phase involves a systematic process to ensure that all components of the building systems, such as HVAC, lighting, plumbing, and electrical systems, are installed correctly, function as intended, and meet the project requirements.

During the substantial completion phase, commissioning agents perform tests and reviews to ensure all systems operate effectively within the designed parameters. This helps identify any issues before the building is fully occupied and can significantly improve energy efficiency and overall building performance, which are essential aspects of the LEED certification process. By validating and optimizing the performance of building systems at this stage, the project team can help ensure that the building operates efficiently and sustainably once it becomes operational.

Other phases, such as the design or concept phases, involve planning and design work rather than the hands-on verification of systems. The operational phase focuses on how the building will perform after it is occupied, while commissioning is aimed at ensuring that everything is correctly installed and functioning prior to that point.