During which phase do systems undergo functional performance testing?

Functional performance testing occurs during the installation phase of a project. This phase is critical as it allows commissioning technicians to verify that each system and its components operate according to the design specifications and as intended in the operational environment. During this stage, technicians conduct various tests to examine how well the systems function in their actual installation settings, ensuring that they meet the performance criteria established during the design phase.

This testing is essential to identify any deficiencies or issues that may arise before the system is fully operational, allowing for corrections to be made early on. It ensures that the systems will function properly once commissioned and handed over for operational use, establishing confidence in the systems' reliability and efficiency.

Understanding when functional performance testing is performed helps underscore the importance of each phase within the commissioning process, reinforcing how systematic and thorough evaluations contribute to the overall success of building systems.