Neither. HEPA (High Efficiency Particulate Airfilter) is a proven filter technology that filters up to 99% of all pollutants and pathogens from the air in filter classes H13 and H14. Problematic is the fact that the filtered particles remain active in the HEPA filter for quite some time, as studies have shown. This becomes a hazard when the filter is changed or used improperly. In addition, decomposition products of certain bacteria, so-called endotoxins, leak out of the filters into the room air and thus also become a health risk. That's why the AiroDoctor uses a powerful combination of different filters: first, pollutants and pathogens are filtered out of the air using a prefilter, activated carbon and HEPA filter. In the next step, photocatalysis takes place, where filtered particles are destroyed and neutralized. Thus, the AiroDoctor with this special filter combination is a particularly powerful, safe and sustainable air purifier.

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