Two international standards, ISO 18501:2025, Performance rating of positive displacement refrigerant compressor, and ISO 18483:2025, Performance rating of centrifugal refrigerant compressor, were released at an event held by GREE and Hefei General Machinery Research Institute Co., Ltd. in Zhuhai, South China’s Guangdong province on June 12.

The two new standards have filled the gap of the performance evaluation of the two compressors. Compressors are the core component of refrigerant equipment, and the large-scale application of compressors with high energy consumption has brought great pressure on the reduction of carbon emissions. The standards have provided a scientific solution for the energy efficiency evaluation of refrigerant compressors around the world, promoting the industrial development towards standardization and high efficiency.