AHRI 880 (I-P) and 881 (SI): Performance Rating of Air Terminals

Standard Scope

This standard applies to air control devices used in air distribution systems. These devices provide control of air volume with or without temperature control by one or more of the following means and may or may not include a fan:

  1. Fixed or adjustable directional vanes (i.e. Bypass Air Terminal)

  2. Pressure dependent volume Air Valves (including air induction nozzles)

  3. Pressure independent (compensated) volume Air Valves (including air induction nozzles)

  4. Integral heat exchange

  5. On/off fan control

  6. Variable speed fan control

  7. Integral Diffuser Air Terminals

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