Replaceable filters are used in the purifier. You need to clean or replace the filters after long-term use to ensure a better purification effect.
Replace the pre-filter when more than 70% of its surface is covered by dust that can't be removed.
Replace the HEPA filter when it fails to filter out smoke.
Clean the medium filter when the dust on it causes poor suction of the purifier. If you cannot clean the dust thoroughly, please replace the medium filter.
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