Project commissioning is not only preferable, but highly recommended for performance-based projects. ASHRAE Standard 1-96, Guideline for Commissioning of HVAC Systems, should be consulted for recommendations concerning HVAC commissioning procedures. A properly chosen M&V option should reinforce the total commissioning process.

Commissioning may be divided into the following phases: pre-design, design, construction, acceptance and post-acceptance. Ideally, verification methods should be chosen during the design phase and implemented prior to the acceptance phase. The chosen M&V option should aid the commissioning agent (CA) in determining optimum performance and acceptability of a given retrofit project during the acceptance process.

Project commissioning also involves monitoring use, occupancy and maintenance beyond the project acceptance phase. Therefore, an additional benefit of implementing M&V protocols in conjunction with commissioning is that it allows the facility owner, CA or maintenance foreman to determine the point at which re-commissioning of a facility or project should be considered. In cases where projects are completed under a performance contract, this would allow M&V activities to proceed, possibly beyond the limits of the performance contract. In such cases, a qualified CA might act as the M&V agent as well.