Filter Technology

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FAQ

Everything about all four filter stages

No known risk of infection emanates from the AiroDoctor air purifier. While in traditional HEPA-only air purifiers contaminated material accumulates in conventional filters and remains active for some time, the AiroDoctor uses UV-A LED photocatalysis to permanently destroy 99.9% of all organic pollutants and pathogens filtered out.

In addition to its outstanding filtering performance of particles down to 0.1μm (micrometers), the AiroDoctor destroys and safely neutralizes 99.9% of all organic particles such as pollen, spores, viruses, bacteria, gases and odors in the final filtering step. No harmful by-products such as ozone or microparticles are produced or emitted in the process.

Yes. The AiroDoctor is ideally suited for persons suffering from allergies. It fulfills all criteria of the ECARF Seal of the European Allergy Foundation, a seal for allergy-friendly products and services. The air purifier removes allergenic pollen, fungal spores and dust mite excrement from the room air and renders the respective particles harmless. The AiroDoctor needs one to three days for the initial cleaning of a room, depending on the contamination. Afterwards, it keeps the room air consistently clean. This distinguishes it from conventional air purifiers.

Yes. The AiroDoctor removes 99.9% of all harmful gases from the air with the help of the activated carbon and photocatalytic filter.

Yes. The AiroDoctor removes 99.9% of all unpleasant odors from the air with the help of the activated carbon and photocatalytic filter. The AiroDoctor is therefore suitable for all healthcare facilities, veterinary practices, offices and industrial plants.

The AiroDoctor is an innovative and sustainable air purifier that does not emit harmful by-products. It filters and neutralizes 99.9% of all pollutants and pathogens. Its effectiveness has been scientifically proven several times. The AiroDoctor works in an environmentally friendly way with very low maintanance needs and with a low operating noise level and long-lasting materials It is suitable for public buildings, health care facilities, schools and day care centers, offices, production facilities and industrial plants, as well as for private use.

Photocatalysis is a chemical reaction triggered by light on a catalyst. In this process, all organic components, for example the shells of viruses and bacteria, are destroyed. The AiroDoctor uses 250g of solid titanium dioxide (TiO2) for photocatalysis, which reacts with UV-A light from high power LED modules.

The AiroDoctor filters the majority of all contaminants in the air. These include hair, dust, fine dust, pollen and spores. In addition, odors, gases, bacteria (e.g. E.coli, TBC, MRE) and viruses (SARS-CoV-2, influenza, norovirus) are not only filtered by 99.9%, but also rendered harmless.

Yes, the unique and innovative filter technology of photocatalysis with high-performance LED on 250g solid titanium dioxide (TiO2) has already been registered for patent. Another special feature is that no harmful by-products such as ozone are emitted.

With photocatalysis, the AiroDoctor offers some technological features that contribute to efficient air purification. In the fourth working stage (photocatalysis), 99.9% of all organic germs and pollutants are destroyed and rendered harmless.


The patent-pending core component made of 250g spherical solid (TiO2) has a maximum surface area for this purpose. The special airflow keeps the contaminated air in the device for as long as possible and thus exposes it to photocatalysis for as long as possible. In addition, the UV-A wavelength of the high-power LED modules was optimized for photocatalysis in countless test series.

The prefilter has the classification M4.

We have deliberately chosen HEPA class H13. H14 would have minimal added value for the actual filter performance, but H14 would achieve approximately 40-50% less air flow rate. For special applications, we do also offer H14 filters. However, the highest possible air flow rate is particularly important for photocatalysis: Here, the air flow is directed past the catalyst material as intensively as possible in order to destroy all organic substances such as viruses and bacteria with the help of UV-A light from powerful LEDs.

No, no toxic substances or microparticles are produced that could enter the room air. The photocatalysis technology of the AiroDoctor, unlike many other air purifiers, is designed to destroy all filtered particles sustainably and emission-free, and no additional harmful particles are generated.

No. The photocatalytic reaction has been specially designed and developed to be very powerful against harmful organic particles such as viruses and bacteria, but without emitting ozone, microparticles or other by-products. This has been confirmed by measurements and studies carried out by the Korea Electronics Technology Institute (KETI) and the Charitè institute in Berlin. The reason for the emission-free operation is, among other things, the ideal UV-A wavelength of powerful LEDs and a filter core made of low-wear titanium dioxide (TiO2) in the form of solid material.

During photocatalysis, organic compounds such as viruses and bacteria are safely destroyed by the chemical reaction of UV-A light on titanium dioxide (TiO2) with the help of free oxygen radicals. The size of the resulting microparticles is in the range of 0.0001 µm (micrometers). This means that the microparticles are almost completely degraded and no longer pose a hazard.

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