With global warming, the wildfires seen on the West Coast are likely to be a continuing major problem. These units should include high MERV or better filters to remove most of these virus-laden particles. For locations that can’t upgrade the HVAC filter or increase outdoor air during winter, in-room units are recommended to add cleaning capability. This is pushing the use of higher efficiency filters in many buildings. With the understanding that COVID-19-containing particles can stay in the air long enough to move into the breathing space and into HVAC systems, the desire to filter these particles out of the air is strong.ĪSHRAE is recommending that MERV 13 filters be used where possible, with MERV-A 13-A or MERV 14 preferred. Why is it important to be talking about filters right now?Īlong with the basic need for good IAQ for the good of the people breathing the air and any sensitive equipment in the indoor space, there are many reasons that are extremely relevant in 2020. They wrote the technical article “What You Can and Can’t Do With ASHRAE Standard 52.2,” which clarifies the misconception that there has ever been a MERV higher than 16 and explores why some filters increase efficiency with time while others decrease.ġ. Owen and Kerr also appear in the December ASHRAE Journal. Q&A Debunking Myths About MERV, Air Filtrationįrom ASHRAE Journal Newsletter, December 8, 2020īesides the basic need for good indoor air quality (IAQ), many extremely relevant reasons exist in 2020 to discuss air filters, according to Kathleen Owen, Fellow ASHRAE, member of the ASHRAE Epidemic Task Force, and Carolyn (Gemma) Kerr, Ph.D., Life Member ASHRAE.įrom common misconceptions to recommended best practices, Owen and Kerr talked with ASHRAE Journal about what people need to know about ASHRAE Standard 52.2, Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size, and air filters.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |