Do air purifiers work for COVID?

The COVID-19 epidemic has profoundly influenced global health. By 2020, approximately 50 million individuals were exposed to the virus, and over 1.5 million had died from respiratory issues connected with the virus.

COVID-19 is a recently discovered disease. We are continually refining our understanding of how HIV spreads through scientific and medical studies. COVID-19 is a highly contagious infection caused by a coronavirus that causes severe acute respiratory syndrome (SARS-CoV-2). When the virus comes into touch with mucous membranes such as those found in the eyes, nose, and mouth, it can cause disease and potentially death.  COVID-19, like measles and influenza, is a viral infection that spreads via aerosol transmission, which is why it is called a mucus-based viral infection. 

With people becoming health conscious and investing more in virus fighting machines to prevent the spread of COVID-19, air purifiers for virus have become the latest health trend globally. However, the question now is can these air purifiers help in combating viruses like COVID-19? 


Types of air purifier — explained


Mechanical air purifiers catch particles using a mesh filter made of glass or specialized synthetic fibres. HEPA and HyperHEPA filters are both types of mechanical air purification filters. Mechanical filtration is the most effective and safest way of removing airborne pollutants.

Mechanical filters trap large particles while allowing air to pass through, similar to a strainer trapping food while allowing water and debris to filter through. Synthetic air filters employ a charged medium composed of synthetic fibres with an electrical charge to boost the filter’s “stickiness.”   Based on the benefits of high airflow, the majority of HEPA filters now use synthetic material. However, as particles “stick” to the filter and the filter becomes too “loaded,” these fibres lose their charge.

Due to the significant difference in long-term effectiveness between mechanical and synthetic filter media, mechanical media typically beats synthetic media when used to facilitate virus filtering.


HEPA filter media must only be tested to capture particles down to 0.3 microns. That’s almost three times the size of the average virus. This is where the Clean Air Delivery Rate (CADR) comes in. CADR measures how many particles are removed multiplied by the airflow rate (cubic feet per minute, or cfm) through the purifier. CADR only tests performance for the first 20 minutes of operation and doesn’t test for particles smaller than 0.1 microns, including many viruses. The virion for COVID-19 and other related SARS viruses is anywhere from 0.06 to 0.14 microns. Way tinier than the 0.3 microns HEPA specification.


Bottom-line: Do air purifiers work for COVID?

Air purifiers are not intended to be the first line of protection against viruses. Social distancing, wearing masks, and maintaining proper hygiene should be your first lines of defence. However, an air purifier capable of filtering ultrafine particles in the air like our Viruz-X machine is an important component of a defence strategy for preventing virus transmission. If you are looking for a reliable air purifier our Viruz-X Machine is the best you can find. It has a plant fibre filter that blocks the large particulate matter (PM) such as hair or fur. The Viruz-X unit has a maximum air volume of 643m3/h which exemplifies the ventilation rates of 3 litres of air per second per person required by the World Health Organization.