If your Core 400S has started to smell stale, the air does not feel as fresh, or the filter warning has come on, it is usually time for a new filter.

This compatible replacement filter suits Levoit Core 400S and Core 400S-P air purifiers using the Core 400S-RF filter style. It uses a three-stage layout with an outer pre-filter for larger dust, lint and pet hair, H13 HEPA media for fine airborne particles, and activated carbon to target everyday odours from pets, cooking, smoke and general indoor air.

It is a useful filter for bedrooms, lounge rooms, open-plan living areas, apartments, pet homes and rooms that pick up cooking smells or dusty air. During smoke haze or bushfire season, a fresh filter can also be a practical part of keeping the purifier ready for regular indoor air cleaning.

The filter is shaped to sit neatly inside compatible Core 400S units, helping air move through the filter media instead of around a loose or poorly fitting filter. A clean filter also support normal airflow compared with an old clogged filter.

It is not washable. Replace it when it looks dirty, feels full, smells stale, airflow drops, or the purifier shows a filter warning.