Study of Viral Filtration Performance of Residential HVAC Filters

Researchers recently carried out an experimental study to understand the efficacy and effectiveness of residential HVAC filters at removing airborne virus particles in the airstream. It concluded that high-efficiency residential HVAC filters were effective at capturing airborne virus particles in the air passing through the filter. Studies have shown that droplets generated by coughing and sneezing can contain bacteria and virus, which covers a very wide particle size range.1 Small droplets can suspend in the air, then dry to form fine particles, which can stay in the air for hours. SARS-CoV-2, which is the virus responsible for COVID-19, is known to transmit through droplets, contact and aerosols. Recent research2 discovered that SARS-CoV-2 can be widely distributed in the air and on object surfaces. Studies have shown that droplets generated by coughing and sneezing can contain bacteria and virus, which covers a very wide particle size range. Small droplets can suspend in the air, then dry to form fine particles, which can stay in the air for hours. SARS-CoV-2, which is the virus responsible for COVID-19, is known to transmit through droplets, contact and aerosols.