Why ASHRAE Standard 185.2 is Important to the Success of Germicidal Ultraviolet Projects

UV devices have been incorporated into HVAC systems as part of decarbonization efforts and to maintain coil efficiency. They are also in ASHRAE Standard 241-2023, Control of Infectious Aerosols.

ANSI/ASHRAE Standard 185.2-2020, Method of Testing Ultraviolet Lamps for Use in HVAC&R Units or Air Ducts to Inactivate Microorganisms on Irradiated Surfaces, is a test method designed specifically to determine UV device performance when under HVAC-induced windchill conditions based on temperature, humidity and airflow.

Authors: Larry Fletcher, Associate Member ASHRAE; Walter Ellis, Member ASHRAE

Citation: ASHRAE Journal, Vol. 67, no. 9, September 2025

Pages: 4

Publish Date: September 2025

Publisher: ASHRAE

ASHRAE members will be able to read the full article by clicking the link below and access the portal.