What is a functional performance test (FPT)?

A functional performance test (FPT) is a critical process in the commissioning phase of building system evaluation. It focuses on verifying that a building system operates in accordance with the specified design criteria and performs as intended in real-world conditions. This encompasses checking various parameters such as temperature control, air distribution, lighting levels, and other operational aspects that impact the overall effectiveness of building systems.

The essence of an FPT lies in its systematic approach, often involving a series of tests and measurements to confirm each system's functionality against the predetermined benchmarks established during the design phase. By ensuring that systems such as HVAC, plumbing, and electrical operate optimally within their intended parameters, the functional performance test helps to confirm that the building not only meets safety and efficiency standards but also enhances the comfort and reliability for the occupants.

This contrasts with other options like evaluating financial performance, user satisfaction, or aesthetic qualities, which do not directly assess the operational efficacy of the building systems themselves.