Can a virus be caught in an air handling unit?

Can a virus be caught in an air handling unit?

Camfil receives questions daily from our customers around the world about viruses in general and Coronavirus (COVID-19) in particular. Below we have gathered the most frequently asked questions about the Coronavirus (COVID-19) and filtration. Can the virus be caught in a filter within an air handling unit (AHU)?

How to prevent the spread of airborne viruses?

To prevent spread of airborne virus such as COVID-19, Camfil highly recommends ePM1 filters or higher. These filters will warrant 50% reduction of the virus over the filter and in most cases due to the size of droplet the reduction will be significantly higher.

How can you catch diseases through the air?

Studies on patients with influenza show that low-speed air flow produced by inhaling and exhaling can create aerosol particles in the lungs and emit them in exhaled breath. Breathing is also thought to be a greater source of infectious particles than coughing.

Can a virus survive in an air filter?

No. Virus captured in the filter are strongly bound to the fibers in the filter media. Once the virus is captured it will stay in the air filter and eventually dry out and die (refers to as inactive). Studies on COVID-19 virus indicates that the virus does not survive longer than three days on open surfaces.

How are bacteria and viruses spread in the air?

They get into the air easily. When someone sneezes or coughs, tiny water or mucous droplets filled with viruses or bacteria scatter in the air or end up in the hands where they spread on surfaces like doorknobs. Inhaling these viruses or bacteria can spread coughs, colds, influenza, tuberculosis and other infectious agents. 1

What kind of diseases can be spread through the air?

Many common infections can spread by airborne transmission at least in some cases, including: Anthrax (inhalational), Chickenpox, Influenza, Measles, Smallpox, Cryptococcosis, and Tuberculosis . Airborne diseases can also affect non-humans.

How does a virus spread from person to person?

The virus spreads easily between people. How easily a virus spreads from person-to-person can vary. Some viruses are highly contagious, like measles, while other viruses do not spread as easily. Another factor is whether the spread is sustained, which means it goes from person-to-person without stopping.

How can we keep viruses and bacteria out of the air?

Washing your hands and common surfaces with soap and water can keep them from spreading on indoor surfaces. Effective ventilation may also help keep bacteria, viruses and other pollutants out of the indoor air. Research shows that air flow and ventilation can affect how diseases spread indoors.