This standard applies to the outdoor sections of factory made air-conditioning and heat pump equipment with cooling capacities up to 40kW, as in the scope of AHRI Standards 210/240 and 340/360 when rated in accordance with AHRI Standard 270.
ANSI/AHRI 275-2010 history
2010ANSI/AHRI 275-2010 Application of Outdoor Unitary Equipment A-Weighted Sound Power Ratings