AHRI Publishes Harmonized Standard for Compressors and Compressor Units

The Air-Conditioning, Heating, and Refrigeration Institute (AHRI) today announced the publication of standards 570 (I-P)-2012 and 571 (SI)-2012, Performance Rating of Positive Displacement Carbon Dioxide Refrigerant Compressors and Compressor Units, providing for the first time a rating method for compressors and compressor units that use CO2 as a refrigerant.