Improperly selected diffusers cause stagnant air zones or excessive drafts. Standard 70 data allows engineers to map air velocity, ensuring compliance with . Acoustic Comfort
ANSI/ASHRAE 70-2006 (RA 2021) - Method of Testing the Performance of Air Outlets and Air Inlets
Understanding ASHRAE Standard 70-2006 (Updated): Testing Air Outlets and Inlets
ASHRAE Standard 70, titled , was updated in 2023 . This latest edition, ANSI/ASHRAE Standard 70-2023 , replaces the 2006 version and its subsequent reaffirmations (RA 2011 and RA 2021). Overview of Updates in Standard 70-2023
Below is a detailed breakdown of the standard, what the "updated" versions look like, and how to access the document legally.
: Applied strictly to grilles, registers, slot diffusers, and louvers terminating ducted and unducted systems.