What is meant by operational verification?

• A. Confirming ongoing performance of the HVAC system once the building is in operation.
• B. Verifying initial design calculations during planning.
• C. Testing only the system during winter months.
• D. Inspecting the building facade for leaks.

Answer: (A)

Operational verification means checking that the installed HVAC system actually performs as intended once the building is in use. It focuses on confirming ongoing performance under real conditions, including how the control sequences, sensors, outdoor air supply, ventilation rates, and equipment start-stop cycles operate when occupants are present and loads vary. This verification goes beyond planning or initial testing and is documented to show the system meets the design intent during normal operation, not just in a controlled or seasonal test. It isn’t about initial design calculations, seasonal-only testing, or envelope inspections, which are unrelated to how the system runs in daily use.