May 11, 2022 ASHRAE Works to Standardize UV-C Testing
During the COVID-19 pandemic, there have been many questions about the proper use of germicidal ultraviolet light (UV-C) energy for surface and air inactivation.
Dean Saputa, VP of UV Resources, was recently interviewed by HPAC Engineering Magazine editor Rob McManamy on his role in helping standardize the reporting effectiveness of UV-C devices. Listen here for the full interview or visit the members page on the HPAC website.
These technical criteria are standards that can be repeated and eliminate discrepancies in laboratory testing while providing clarity, consistency, and certainty in product performance claims.
Saputa is past chair of ASHRAE’s Technical Committee 2.9: Ultraviolet Air and Surface Treatment, which is charged with adding two new performance standards that have grown out of the SARS-CoV-2 pandemic.
Here’s a quick recap of the ANSI/ASHRAE 185 testing standards and the two new proposed standards:
- 185.1-2020: Method of Testing UVC Lights for Use in Air Handling Units or Air Ducts to Inactivate Airborne Microorganisms, also referred to as airstream disinfection.
- 185.2-2020: Method of Testing Ultraviolet Lamps for Use in HVAC&R Units or Air Ducts to Inactivate Microorganisms on Irradiated Surfaces.
- 185.3P (proposed). Method of Testing In-Room Devices and Systems for Microorganism Removal or Inactivation in a Chamber.
- 185.4P (proposed). Method of Testing In-Room Ultraviolet Devices and Systems for Microbial Inactivation on Surfaces in a Test Room.
Saputa notes that members of the ASHRAE Epidemic Task Force recommend that building engineers and facility managers learn more about germicidal UV-C disinfection by referencing the ASHRAE Position Document on Infectious Aerosols (2020), which includes the use of evidence-based solutions such as upper room and in-duct UVGI.