The photocatalytic filter is made of ceramic coated in titanium dioxide, it’s ideally designed to last forever, unless in case of breaking. The filter is covered by a 2 years warranty. The filter is washable, in order to keep it clean all you have to do is rinse it with water at least once a month. Cleaning frequency may be different from case to case, depending on the indoor space where you have placed your Natede.
For the regular maintenance:
WARNING UV LEDs
Be careful with the UV LEDs under the photocatalytic filter: