Which Air Purification Technologies Can Tackle COVID-19?

Air Purification Technologies

There is little direct empirical evidence to support the use of air cleaners to address the COVID-19 pandemic, but there is a growing body of knowledge. The U.S. Centers for Disease Control and Prevention found that HEPA-rated air cleaners effectively reduced the level of COVID-19 in indoor environments. Despite the new evidence, Stephens does not recommend the use of ionization systems.

AHAM-certified air cleaners are a good starting point for any home or business. HEPA filters, which are made to be as efficient as possible, can capture more than 99.97% of particles. MERV 13 or higher is the best filter for this purpose, according to the AHAM. The minimum efficiency reporting value (MERV) of the purifiers should equal two-thirds of the room’s area. For example, a 300-square-foot room should have a CADR of 200.

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There are four basic types of air purifiers. Some of these technologies have been around for decades, while others are still under further study. Some are proven, but they need more research. They are highly effective against SARS-CoV-2, and are the first line of defense when it comes to breathing indoor air. These include high-efficiency particulate air (HEPA) filters and fresh-air ventilation. These filters send charged ions out on air currents to damage the surface of pathogens and may bind with the virus’ aerosols.

Which Air Purification Technologies Can Tackle COVID-19?

In addition to HEPA-certified units, many companies are combining multiple technologies into a single device. One such device is called the Aura Air in Tel Aviv, Israel, and combines a HEPA filter with an absorbent carbon filter, UVC light, and bipolar ionizer. Red Barn Advisory, which supplies the $500 unit in the US, also offers portable versions.

The four most popular air purifiers available in the market are HEPA-certified and multi-filter air purifiers. While HEPA filters have been around for decades, they require more research to find the best ones for COVID-19. The Madison Beach Hotel in Florida, for example, had several outdoor spaces, including a poolside bar with a large pool. HVAC contractors installed an air-purification system in the hotel, as well as portable systems for spa treatment rooms.

Despite the claims of some air purification companies, the research has not yet been conclusive. While some air purifiers can be effective in removing the coronavirus from the air, these products may only reduce the virus in the air. Fortunately, there are already more advanced air-purification technologies available than ever before, and they can be of great help in combating the COVID-19 virus.