Which entity is responsible for TAB work within the commissioning process?

Which entity is responsible for TAB work within the commissioning process?

• A. TAB agency
• B. CxA
• C. General contractor
• D. Owner's O&M staff

Answer: (A)

Testing, adjusting, and balancing requires specialized equipment, calibrated procedures, and trained technicians to measure airflow, pressures, and damper positions across the entire HVAC system. A TAB agency is the party equipped and skilled to perform these tasks consistently and objectively, producing verifiable test reports that show the system meets the design intent. In the commissioning process, the CxA relies on these independent TAB results to verify performance and resolve any deficiencies, while the TAB agency itself handles the hands-on testing and adjustments. The owner’s O&M staff typically operate and maintain the system after occupancy, and the general contractor coordinates installation but does not usually execute TAB as a separate, specialized service.

Testing, adjusting, and balancing requires specialized equipment, calibrated procedures, and trained technicians to measure airflow, pressures, and damper positions across the entire HVAC system. A TAB agency is the party equipped and skilled to perform these tasks consistently and objectively, producing verifiable test reports that show the system meets the design intent. In the commissioning process, the CxA relies on these independent TAB results to verify performance and resolve any deficiencies, while the TAB agency itself handles the hands-on testing and adjustments. The owner’s O&M staff typically operate and maintain the system after occupancy, and the general contractor coordinates installation but does not usually execute TAB as a separate, specialized service.