https://cleanaircrew.org/air-filters-work/
We know that HEPA and MERV13 filters work to remove airborne virus particles. Read all about it from the EPA, CDC, OSHA, and ASHRAE.
Air Cleaners, HVAC Filters, and Coronavirus (COVID-19)
www.epa.gov/coronavirus/air-cleaners-hvac-filters-and-coronavirus-covid-19
“When used properly, air cleaners and HVAC filters can help reduce airborne contaminants including viruses in a building or small space.”
“Consider using portable air cleaners to supplement increased HVAC system ventilation and filtration, especially in areas where adequate ventilation is difficult to achieve.”
Ventilation in Buildingswww.cdc.gov/coronavirus/2019-ncov/community/ventilation.html
“SARS-CoV-2 viral particles spread between people more readily indoors than outdoors. Indoors, the concentration of viral particles is often higher than outdoors, where even a light wind can rapidly reduce concentrations. When indoors, ventilation mitigation strategies can help reduce viral particle concentration. The lower the concentration, the less likely viral particles can be inhaled into the lungs (potentially lowering the inhaled dose); contact eyes, nose, and mouth; or fall out of the air to accumulate on surfaces. Protective ventilation practices and interventions can reduce the airborne concentrations and reduce the overall viral dose to occupants.”
“Use portable high-efficiency particulate air (HEPA) fan/filtration systems to enhance air cleaning (especially in higher risk areas such as a nurse’s office or areas frequently inhabited by people with a higher likelihood of having COVID-19 and/or an increased risk of getting COVID-19).”
What is a HEPA filter and why use a portable HEPA air cleaner?www.cdc.gov/coronavirus/2019-ncov/community/ventilation.html#refphf HEPA filters are no less than 99.97% efficient at capturing human-generated viral particles associated with SARS-CoV-2.
Maintain Ventilation Systems.