ASHRAE 195-2024

ANSI/ASHRAE Standard 195 specifies instrumentation and facilities, test installation methods, and procedures for determining the accuracy and stability of airflow control systems for terminal units at various airflow set points. It is intended for application in the following scenarios:

• An HVAC system specifier indicates performance requirements for airflow control for a given project. The requirements are specified in terms of nominal flow rates, accuracy, stability, operating pressures, and other relevant conditions. Contractors or suppliers document performance of proposed equipment based on tests run and reported in accordance with this standard.
• A supplier of airflow controls wishing to publish the capabilities of a product executes tests and reports results in accordance with this standard. The supplier chooses the operating conditions to test and report.

The 2024 edition of Standard 195 expands the testing options for the scope of the test. All tests in the 2013 edition apply to the combination of a controller and air terminal. The 2024 edition includes the option to test only the performance of the controller, paired with a standard air terminal.