HEPA filters

How HEPA filters work

If it comes to air purification the first thing many people think of is the HEPA filter. In fact, it is one of the most common solutions to filter out and remove airborne contaminants.


Depending on type, some HEPA filters can extract select airborne organisms of microscopic size improving air quality.

However, they don’t provide 100% protection. Why?


Typically, HEPA filters are made up of randomly structured fiberglass ranging from 0.5 to 2 µm in diameter. The key factors of the filter’s effectiveness are: the diameter of the fibers, the thickness of the filter and the surface velocity of the air passing through it. The space between the threads of HEPA filters is more than 0.3 µm.

As airborne viruses and pollutants are much smaller in size than the diameter of the fibers, the smallest contaminants can easily pass through them.

Additionally, HEPA filters merely trap contaminants, it’s unclear when they are clogged, the filters wear out losing efficacy and they require frequent replacement.
What’s more, the aerosolized contaminants extracted from air are not destroyed.

Some HEPA-based filtration systems are loud and/or consume a high amount of energy.

What can Airocide do for you?

  • It doesn’t produce ozone or other harmful by-products.
  • Low energy consumption.
  • Small and compact size.
  • Chemical-free solution.
  • It’s quiet operation enables a restful sleep at night.
  • It doesn’t use filters and doesn’t require any maintenance.
  • Airocide cleans the Air 24/7.
  • It eliminates the contaminants that we can’t see and HEPA filters can’t extract.

Clean environment. Feel better.

Airocide units at home.

Airocide APS-200 PM 2.5

Airocide APS-300


Airocide APS-1000

Airocide Info

How does it work? 


NASA and Airocide

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