Chiller is the major energy consuming equipment of central air-conditioning system. The performance must be proved in laboratory built in the manufacturing plant or the third impartial unit, and then the capacity and efficiency can be obtained. Since the performance is measured by equipment, the instrument equipment and its calibration will affect the results directly. This article describes the necessary of equipment and its calibration for chiller performance test laboratory by simple and brief description. It is expected to be helpful for the third impartial unit and quality assurance staff and testers. Besides, it is useful for maintaining the measurement quality and testing requirements of the test laboratory. Then, it can meet the requirements of relevant standards or assessment units.