Which three items are required to be completed in order for the commissioning process to be completed?

• A. Verification of functional performance for all systems; Submission of TAB reports; Submission of O&M manuals
• B. Verification of functional performance for all systems only
• C. TAB reports alone
• D. O&M manuals only

Answer: (A)

Completing commissioning means closing the loop with three essential deliverables: you must verify that every system operates to the design intent and owner’s requirements under real operating conditions; you must document the testing, adjusting, and balancing (TAB) that shows those systems were tested and set to the correct operating points; and you must provide the O&M manuals so the building can be operated and maintained to sustain performance. Each piece supports a different aspect of ensuring long-term reliability: functional performance verification demonstrates actual operation, TAB reports confirm proper balancing and efficiency, and O&M manuals enable ongoing proper operation.

If you only verify performance, you’d lack documented evidence of the balancing and you wouldn’t have manuals for daily operation. If you only have TAB reports, there’s no proof the systems meet the owner’s requirements in actual use, nor are operators equipped with manuals. If you only provide O&M manuals, there’s no verified performance or documented balancing to show the systems were installed and tuned correctly.