Building commissioning is a joint team effort to ensure that all equipment, controls and systems function together properly to meet the design intent and to document system performance parameters for fine tuning of control sequences and operational procedures.The commissioning process encompasses and coordinates the traditionally separate functions of system documentation, equipment start up, control system calibration, testing and balancing, training, and performance testing. The commissioning team is made up of the commissioning agent and representatives from the owner, engineer, major equipment suppliers, controls vendor, and sub contractors.