AHRI 260 (SI/I-P): Sound Rating of Ducted Air Moving and Conditioning Equipment

AHRI Standard 260 establishes definitions, requirements for acquiring sound data, sound level calculations, equipment sound ratings, and conformance conditions for factory-assembled ducted air moving and conditioning equipment.

This standard applies to ducted equipment containing fans and specifies methods for determining the sound power ratings, using sound data for rating the product sound components across the operating range. Mapped sound ratings reported are octave band sound power levels from 63 Hz to 8000 Hz. In addition to the stated octave band mapped sound ratings, this standard can be used to provide one-third octave band mapped sound ratings from 50 Hz to 10,000 Hz.

Exclusions
This standard does not apply to the following AHRI classes of equipment:

• Outdoor heat rejection sections of equipment addressed in AHRI 270 and 370
• Non-ducted equipment addressed in AHRI 300 and AHRI 350
• Terminal equipment addressed in AHRI 880 (I-P) and AHRI 881 (SI)
• Ductless fan coil units addressed in AHRI 440 (I-P)
• Active chilled beams addressed in AHRI 1240 (I-P) and AHRI 1241 (SI)

AHRI 260-2024 (SI/I-P) Sound Rating of Ducted Air Moving and Conditioning Equipment

AHRI 260 (I-P/2017): Sound Rating of Ducted Air Moving and Conditioning Equipment

AHRI 261 (SI/2017): Sound Rating of Ducted Air Moving and Conditioning Equipment

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