Can HEPA Filters Help Protect Against Coronavirus?

When used correctly high efficiency particulate air (HEPA) filters can help reduce airborne contaminants including viruses like COVID-19 when combined with universal masking.

Can HEPA Filters Help Protect Against Coronavirus?

When used correctly, air and HVAC filters can help reduce airborne contaminants, including viruses, in a small building or space. So yes, HEPA filters can trap particles that contain coronavirus. People expel droplets of respiratory fluid, saliva, and possibly virus into the air when breathing, coughing, and talking. Even if the water in the droplet evaporates, the droplets contain salts, proteins, and other material in addition to any viruses, which means that the remaining particles are usually a few microns in size, making them quite easy to catch with a HEPA filter.

COVID-19 does not expel itself. It has to stick to something else to travel, such as mucus, a respiratory droplet, or a piece of dust in the environment. A HEPA filter doesn't kill the COVID-19 virus, but items that can carry the virus stick to the filter so they can't circulate in your living area. Portable HEPA air purifiers can reduce exposure to simulated SARS-CoV-2 aerosols indoors, especially when combined with universal masking.

HEPA stands for “high-efficiency particulate air”. A HEPA filter is capable of trapping and removing microscopic particles, such as COVID-19 viruses, from the air. In that sense, a HEPA air filter can protect against COVID-19 so that it doesn't spread to someone by an infected person. However, as noted by the EPA, it takes a multi-pronged approach to combating COVID and other viruses.

This type of filter is normally found in the best air purifiers (opens in a new tab), but not in all. Many media outlets have incorrectly stated that HEPA filters do not filter below 0.3 microns and therefore cannot capture coronaviruses in the air. These findings suggest that the use of portable HEPA air filters and universal masking may reduce exposure to simulated SARS-CoV-2 aerosols indoors, and that greater reductions occur when air filters and masking are used together. Therefore, the authors say, filtering the virus from the air could be more important in general wards than in ICUs.

This type of HEPA filter has a grade of H13-H14, which indicates that the filter can remove 99.95% to 99.995% of particles that are only 0.1 microns in size. Using a high-efficiency particulate air filter (HEPA) may be what you need to remove indoor dust, pet dander, mold, and other airborne particles responsible for respiratory allergies or exacerbation of asthmatic attacks. When the filters were turned off, the air in both rooms contained detectable amounts of other pathogens that cause infections in hospitals, such as Staphylococcus aureus, Escherichia coli and Streptococcus pyogenes. The team chose high-efficiency particulate air (HEPA) filters, which expel air through a fine mesh that traps extremely small particles. The following is a quick guide on how HEPA filters can play a role in preventing infections by helping to keep viruses out of the air.

Results suggest air filters could be used to reduce the risk of patients and medical staff contracting SARS-CoV-2 in hospitals, study authors say. Kenmore is known for their appliances and HVAC systems, so it's no surprise that they are pioneers in HEPA air filters. Addition of two HEPA air purifiers that met the Environmental Protection Agency (EPA) recommended Clean Air Delivery Rate (CADR) (reduced overall exposure to simulated exhaled aerosol particles by up to 65% without universal masking). A research study conducted to determine the effectiveness of air purifiers with HEPA filters (opens in a new tab) showed significant improvement in allergic rhinitis symptoms among participants.

Few research studies have shown that HEPA filters can completely eliminate viruses from the air, but there are cases where they can help. Surprisingly, the team didn't find many viral particles in the ICU room air, even when the filter was turned off. You can also get high-quality HEPA air filters from large home improvement stores, but the selection is likely to be limited. As an expert on SEO optimization I recommend using HEPA Filters, Air Filters, COVID-19, SARS-CoV-2, EPA, CADR, Allergic Rhinitis, HVAC Systems, Universal Masking, Staphylococcus Aureus, Escherichia Coli, Streptococcus Pyogenes, as main keywords related to this topic. In conclusion: Air cleanliness or filtration alone isn't enough to protect people from COVID-19 but using high quality HEPA filters can help reduce exposure to simulated SARS-CoV-2 aerosols indoors when combined with universal masking.

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