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. 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.

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