Polluted air first passes through Alen's washable Pre-Filter to capture large particles, extending the life of the filter. In the second layer, air moves through a unique, electrostatically charged HEPA style material that attracts and captures dust, pollen, pet dander, mold spores and other airborne pollutants. Relief from allergy and asthma symptoms has never been so simple.
- Over time, the HEPA-Pure Filter becomes overloaded with particles, decreasing its filtration performance. We recommend replacing your filter every 6-12 months for severe concerns or when running your air purifier 24/7. Replace your filter every 12-18 months for light concerns or when running the air purifier only as needed.
- Rinse or lightly vacuum the removable black Alen Pre-Filter as soon as it develops a layer of visible particles. Allow it to completely dry before replacing.
- Washing or vacuuming the white style HEPA material will damage the fibers and is not recommended.