ANSI/AHRI 270-2008: Sound Rating of Outdoor Unitary Equipment

Standard Scope
This standard establishes for the outdoor sections of air-conditioning and heat pump equipment of less than 135,000 Btuh, sound ratings in terms of a derived tone corrected A-weighted sound power level, in decibels.

Free Download: ANSI/AHRI Standard 270-2008

© 2008, by Air-Conditioning, Heating, and Refrigeration Institute