What is Testing and Balancing (T&B) required for 62.1?

• A. Measurements and adjustments to ensure airflow rates and system performance meet design criteria.
• B. Visual inspection only.
• C. Noise level testing.
• D. Filter replacement schedule

Answer: (A)

The main idea being tested is that Testing and Balancing means actually measuring airflows in the installed system and making adjustments so the delivered ventilation and overall system performance match the design criteria required by ASHRAE 62.1. In practice, this involves taking field measurements of supply, return, and exhaust flows, as well as outdoor air fractions, using appropriate instruments. Then dampers, control sequences, and fan speeds are set or fine-tuned so the target ventilation rates are achieved and maintained under normal operation. This is typically done as part of commissioning or T&B activities and is documented with results and any necessary retesting after adjustments.

Visual inspection alone cannot verify that the system delivers the required flows, noise testing isn’t the purpose of T&B, and a filter replacement schedule is a maintenance activity, not a testing and balancing assessment.