The acoustic energy generated by air moving through the device, typically reported as a Noise Criterion (NC) rating.
Understanding ASHRAE Standard 70-2006: Testing Air Outlets and Inlets
As of March 2021, the standard was updated and approved by ASHRAE and the American National Standards Institute (ANSI).
The standard provides a level playing field for manufacturers. By dictating exact laboratory setups and instrumentation requirements, it ensures that performance data (such as throw, drop, and sound levels) from Manufacturer A can be accurately compared to data from Manufacturer B. Scope Limitations
No legitimate free copy exists – ASHRAE holds full copyright. ashrae standard 702006 pdf updated
The standard is organized into strict procedural sections to ensure repeatability:
What specific or project type are you designing for?
The geometric boundary surface that maps points of equal terminal velocity around an active outlet. Evolution of the Standard: From 2006 to 2023 Updates
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The 2023 edition represents a significant leap forward. ASHRAE Standard 70 was first published in 1972, revised in 1991 and 2006. The 2023 edition updates the 2006 edition by covering a and by specifying commercially available test instruments (updating the outdated equipment references from the 2006 version).
Subsequently, Standard 70-2006 was reaffirmed again in 2021 (RA 2021). By this time, the standard had been active for 15 years. You will often see the document listed as . This indicates you are looking at the 2006 text, reaffirmed as current practice in 2021.
Its primary purpose is to establish uniform methods of testing for:
) : The pressure exerting force perpendicular to the duct walls. High static pressure increases fan energy consumption. Total Pressure ( Ptcap P sub t The geometric boundary surface that maps points of
Because ASHRAE standards are protected by copyright, up-to-date, legal copies should be sourced directly through official channels:
Ensuring proper indoor air quality, thermal comfort, and energy efficiency in modern buildings relies heavily on the performance of air distribution devices. , "Method of Testing the Performance of Air Outlets and Air Inlets," remains the foundational, internationally recognized standard for evaluating these critical HVAC components.
ASHRAE Standard 70-2006 provides a comprehensive framework for testing and rating the performance of air-to-air heat recovery ventilators and energy recovery ventilators. The standard has undergone updates and revisions over the years to reflect changes in the industry and to improve the accuracy and reliability of the testing and rating procedures. By following this standard, building owners, architects, engineers, and manufacturers can ensure that HRVs and ERVs are designed, installed, and operated to optimize indoor air quality, energy efficiency, and equipment life.
: Specifies commercially available test instruments with higher accuracy than those previously listed in the 2006 standard.
ASHRAE Standard 70-2006 was formally . A reaffirmation means the technical committee reviewed the document and determined the methodologies remained valid without requiring a full rewrite. The document is officially designated as ANSI/ASHRAE Standard 70-2006 (RA 2011) . Industry Transition to AHRI Standard 880/885