A comparative study regarding the performance of magnetic centrifugal chillers having falling film evaporator is conducted in this study. Since the performance of compressor and heat exchanger are improved, the operating efficiency is 20~30% higher than that of existing technology products (the energy saving ratio may vary depending on the conditions of use). In addition, with the design control system and the refrigerant cycle system, the chiller capacity and efficiency are tested. This study focuses on the test results and performance analysis of the full load and partial load of two chillers, which can be used as an important reference for the design and practical application of the chiller system in the industry.