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micronAir blue

The new generation of Freudenberg cabin air filters

Triple defense against polluted air

micronAir blue minimizes health risks

Disclaimer: Please note that the claims being made in the following communication only apply to European countries. For locations outside of the European Economic Area (EEA) you should first review local regulatory restrictions. For the USA, the product is not available until the pending registration with the United States Environmental Protection Agency (US EPA) has been completed.

micronAir blue provides drivers and passengers the best possible protection inside vehicles. Conventional automotive particle or combi filters only prevent the intrusion of soot, dust and foul odors via the ventilation system. In contrast, micronAir blue additionally reliably and sustainably prevents virtually 100 % of particulates, nearly 100 percent of ≥2 micron allergens carried in the airflow as well as fungal microspores from entering the vehicle cabin.


Four filtration layers, highest air quality

micronAir blue is based on a novel composite material design that combines different filter characteristics. Varying density synthetic fibers are used to capture coarse to ultrafine particulate matter. The reliable adsorption of odors and gases is handled by a uniquely designed activated carbon layer. The filter is also equipped with a functional layer that extremely efficiently and permanently denaturates allergens. Nano-silver free additives with very long-term stability are used, which have been scientifically proven safe for humans.



Top performance particle filter Top performance fine dust filter Top performance activated carbon Functional layer Brandneu brand new

particle filter

Stops PM10 coarse dust and industrial dust as well as pollen

fine dust filter

Halts PM2,5 fine dust, mold micro spores and pollen fragments

activated carbon

Protects against harmful gases and unpleasant emissions of the vehicle interior

functional layer

Nano-silver free layer with superior long-term effect against air-floating allergens on unique fruit extract basis

Find out more about the effect of micronAir blue.

Discover its structure flying through the 4 filter layers.

Evolution of the Freudenberg cabin air filter

With the invention of the first cabin air filter back in 1989, Freudenberg Filtration Technologies set a new standard for health protection and safety inside vehicles.

The proven micronAir particle filter includes reliable fine dust, pollen, road dust, soot and bacteria protection. This was later followed by another innovation: the micronAir combi filter. Although the filter media of both micronAir cabin air filters are essentially identical, the micronAir combi filter has an additional layer of activated carbon to adsorb odors and gases (e.g. benzene and ozone). This cabin air filter evolution has now led to the latest addition: micronAir blue.

micronAir blue advantages at a glance

  • Eliminates virtually all ≥2 micron allergens and protects against the smallest microorganisms, such as fungal spores
  • Longer and more reliable neutralization of allergens thanks to nano-silver free functional layer impregnated with fruit extracts
  • Separates almost 100 % of particulate matter
  • Effectively and reliably adsorbs harmful gases and unpleasant odors
  • High filtration efficiency and dust holding capacity over longest possible period
  • Comply with the tough requirements for particle separation in automotive interior filters needed to gain the ECARF quality seal
  • Developed and produced by Freudenberg Filtration Technologies, the most important innovation partner for automotive cabin air filters
  • micronAir blue cabin air filters can trap approximately 90 percent of viral aerosols. In addition, the innovative bio-functional layer, impregnated with fruit extract, inactivates almost 100 percent of captured viral load

Benefit from micronAir blue

micronAir blue is the newest addition for the IAM. It is part of the newly launched micronAir proTect line offered to OE customers from Freudenberg Filtration Technologies. This new generation of cabin air filters with its product features is the answer to the rising demand for functional filters in the automotive industry. With micronAir blue, Freudenberg Filtration Technologies grants aftermarket customers access to high-quality filters.

Innovation partner of the automotive industry

Freudenberg Filter

Freudenberg Filtration Technologies is the innovation partner in the development of automotive interior filters for the automotive industry. As the inventor of the cabin air filter, many years of expertise have provided the ideal basis for the production of top-quality filtration media. Specific requirements are discussed with the customer and individual solutions rapidly implemented.

Freudenberg Filtration Technologies is the only manufacturer of automotive interior filters to have a direct influence on the entire value chain, from granulate to the finished high-performance filter. These quality demands result in top quality and worldwide proven automotive cabin air filters. Their particularly thick and evenly arranged microfibers ensure excellent separation efficiency and a long service life. Freudenberg uses only the highest quality synthetic microfibers for this purpose.