AHRI 270: Sound Rating of Outdoor Unitary Equipment (with Addendum 1)

Standard Scope

This standard applies to the outdoor sections of factory-made air-conditioning and heat pump equipment as defined in AHRI Standard 210/240, AHRI Standard 340/360 (cooling capacity ratings of equal to or less than 40.0 kW), AHRI Standard 1230, AHRI Standard 1160 (I-P), and AHRI Standard 1161 (SI). Products covered include air-source unitary heat pumps, heat pump pool heaters, unitary air-conditioners, and variable refrigerant flow (VRF) systems.

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