What aspect of commissioning does a technician often monitor over time to ensure efficiency?

Monitoring system performance data is a critical aspect of commissioning that technicians focus on over time to ensure efficiency. This involves continuously evaluating how the building systems operate under different conditions to confirm they are functioning as intended and meeting design specifications. System performance data includes metrics such as energy usage, equipment operational effectiveness, and overall system reliability. By collecting and analyzing this data, technicians can identify any deviations from expected performance, allowing for timely adjustments or improvements.

Ensuring systems perform efficiently helps reduce operational costs and enhance the overall performance of the facility in terms of energy efficiency and indoor environmental quality. This ongoing assessment is essential not only during the commissioning phase but also long after the building is occupied, as it allows for proactive maintenance and optimization of the systems.