If you are a student or a professional with access to a university library or a corporate engineering portal (like Knovel or Engineering Village), you may be able to view the standard there for free through your institution's subscription.
The latest ANSI/ASHRAE Standard 70-2023 is available for purchase in PDF or hardcopy format at the ASHRAE Bookstore or through the ANSI Webstore . ashrae standard 702006 pdf updated
The 2023 update introduces several critical improvements over the 70-2006 (RA 2021) version to better align with modern HVAC technology: If you are a student or a professional
ASHRAE Standard 70 defines the laboratory methods for testing air outlets and inlets used in ducted and unducted systems. It is the benchmark manufacturers use to generate the performance data found in their product catalogs, such as grilles, registers, and diffusers. The standard provides uniform methods for determining: It is the benchmark manufacturers use to generate
ASHRAE offers Read-Only Versions of many standards for public viewing, though printing and downloading are typically restricted. Read-Only Versions of ASHRAE Standards