The 2023 update introduces several critical improvements over the 70-2006 (RA 2021) version to better align with modern HVAC technology:
: Testing for "throw" (how far air travels) at different terminal velocities. ashrae standard 702006 pdf updated
: Testing performance with air that is both the same temperature as the room and at different temperatures. Accessing the PDF and Revisions ashrae standard 702006 pdf updated
: Specifies commercially available test instruments with higher accuracy than those previously listed in the 2006 standard. ashrae standard 702006 pdf updated
: Updates installation procedures and facility definitions to more accurately reflect how devices perform in their intended real-world applications.
ASHRAE standards are typically updated on a five-year cycle. While the 70-2006 version is technically superseded, you may still find it referenced in older project specifications.