AHRI 300: Sound Rating and Sound Transmission Loss of Packaged Terminal Air-conditioners and Heat Pumps

This standard establishes definitions, test requirements, rating requirements, minimum data requirements for published ratings, conformance conditions, and a method to determine sound transmission loss for packaged terminal air-conditioners and packaged terminal heat pumps.

AHRI 300 applies to the indoor and outdoor sections of factory-made packaged terminal air-conditioners and packaged terminal heat pumps as described in AHRI 310/380 (CSA-C744).

AHRI 300-2025 (SI/I-P) Sound Rating and Sound Transmission Loss of Packaged Terminal Air-conditioners and Heat Pumps

AHRI 300 (2015) - {R2021}: Sound Rating and Sound Transmission Loss of Packaged Terminal Equipment

© 2025, by Air-Conditioning, Heating and Refrigeration Institute