Which describes the typical balance of activities in commissioning: balance systems, document and verify results, and perform functional performance tests on all HVAC systems included in the scope?

• A. Only install equipment
• B. Only write reports
• C. Balance systems, document and verify results, and perform functional performance tests on all HVAC systems included in the scope
• D. Ignore O&M staff training

Answer: (C)

The main idea is that commissioning ensures HVAC systems actually perform as intended by using a balanced set of activities: balancing the systems to achieve proper airflow and pressure, documenting and verifying the results for traceable evidence, and conducting functional performance tests on every system included in the scope to confirm correct operation under design conditions. Balancing ensures the system isn’t over- or under-sized for its spaces; documenting results creates an auditable record that tests were completed and criteria met; and functional performance testing proves the control sequences, interactions, and overall performance work when the system is run as it will be operated. Together, these steps provide a complete, verifiable path from installation to ready-for-operation. Merely installing equipment misses verification and operation testing; focusing only on reports misses actual performance data; and skipping training for operations staff undermines long-term reliability and handover.