What are the key steps in performing a commissioning checklist for an HVAC project?

• A. Budget approval and procurement.
• B. Filter changes and routine cleaning.
• C. Design review, installation verification, controls verification, functional performance tests, sensor calibration, safety interlocks, balancing, documentation of results.
• D. Post-occupancy energy modeling.

Answer: (C)

The process being tested is the systematic verification that an HVAC system will perform as intended and a clear record of that verification is produced. A proper commissioning checklist covers a full spectrum of activities from design intent to actual operation. It starts with design review to confirm that the proposed system meets project requirements and codes, then moves to installation verification to ensure equipment, ductwork, wiring, and connections are installed correctly according to design. Controls verification follows, making sure the control sequences, setpoints, interlocks, and communication between devices reflect the intended operation. Functional performance tests are then conducted to simulate real operating conditions and prove the system can meet loads, respond to controls, and operate across different modes. Sensor calibration ensures measurements used for control and monitoring are accurate, while safety interlocks are checked to prevent unsafe operation. Balancing adjusts air and water flows so the system delivers the designed comfort and efficiency, and documenting results provides a clear, traceable record for future maintenance and confidence that commissioning goals were met. Other activities like budget approval, procurement, routine filter changes, or post-occupancy energy modeling fall outside the core commissioning steps, as they are either project management tasks, ongoing maintenance, or later-stage evaluations rather than the verification of design intent and operational readiness.