Purchase the latest Standard 70-2023 PDF or legacy versions.
The 2006 version underwent several reaffirmations (re-approvals without technical changes) in and 2021 before the major technical update in 2023.
The 2006 version was reaffirmed without technical changes in 2011. Reaffirmation (RA 2021):
While the core testing methodologies for air distribution are robust, the 2021 reaffirmation confirms that the standard remains the active standard for laboratory testing of terminal devices. It maintains the 2006 requirements for test instruments, facilities, and procedures, ensuring industry continuity.
