Turnover & closeout
Functional performance test
Also called: FPT
A functional performance test is the step in commissioning where a system is run through its intended operating conditions — normal, off-normal, and failure modes — against a written test script, and each expected response is recorded as pass or fail. It proves the whole system works as a system, not just that individual components energize. A test only counts when the equipment has been installed, started up, and pre-functionally checked first.
How it shows up on site
The commissioning agent, controls contractor, and relevant trade run the script together: force a call for heating or cooling, simulate a loss of power, trip a safety, and confirm the sequence does what the design says. Air balance reports, control setpoints, and alarm responses all get exercised here rather than assumed.
What proves it
The completed test script — every line marked pass or fail, with the date, who witnessed it, and a note on any deficiency — is the evidence. Failed lines drive corrections that get retested, and the closed-out scripts, photos of the tested equipment, and final results become part of the commissioning record delivered at turnover.
Standards it's verified against
Checklists that put functional performance test to work
Free, field-ready checklists, each with the photo every item needs before it can be submitted.
Related terms
- Commissioning (Cx)The process of verifying that installed systems actually perform the way the design and the owner's requirements intended.
- Turnover packageThe set of documents and records handed to the owner or operator so they can run and maintain the completed building.
- Closeout packageThe compiled record proving the work was completed, inspected, and accepted, assembled to close out the contract.
- Substantial completionThe milestone where the work is usable for its intended purpose, even with minor punch items still open.
- Certificate of occupancy (CO)The document the building department issues confirming a completed building is code-compliant and legal to occupy.
- Temporary certificate of occupancy (TCO)A time-limited AHJ approval to occupy a building, or part of it, while specific remaining items are finished.
Knowing the term is step one. Proving it is the job.
RTI holds the submit button until every mandatory item is answered and the photos are attached, then chains the record so it can be proven untouched later.