Alen A350/A375 HEPA-Silver Filter

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Designed for the Alen A350 and A375 HEPA Air Purifiers, the Alen® HEPA-Silver Filter combines three layers of filter technology to purify and freshen the air in your home while protecting the filter against bacteria and microbes.

  • Ideal for Allergen and Antimicrobial Filter Protection
  • Protects Against Bacteria Growth and Microbes
  • Includes Pre-filter Layer

  • Regular filter replacement allows your Alen HEPA air purifier to perform at its best so you can continue breathing clean air.

    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. Alen's anti-microbial Silver-Ion threads are woven into the HEPA style material, protecting the filter from harmful bacteria* and microbe growth. In the final layer, clean air passes through a layer of Alen's Activated Carbon, reducing light odors and chemicals commonly found in the air from cleaning products, smoke, cooking, pets and various other household materials.

    Alen recommends replacing your A350/A375 HEPA-Silver filter every 6 months for severe concerns or when running your air purifier 24/7. Replace your filter every 12 months for light concerns or when running the air purifier only as needed.

    *Test results demonstrate a 99.99% kill rate on E. Coli and Staph Bacteria.


    • Creates an allergy and asthma friendly environment by removing dust, pet dander, mold spores and pollen from the air
    • Provides pure, breathable air by capturing VOCs (Volatile Organic Compounds) from cleaning products, personal care items and other household materials
    • Helps maintain a clean household by reducing dust
    • Pre-filter layer extends the life of the filter
    • Over time, the HEPA-Fresh Filter becomes overloaded with particles, decreasing its filtration performance. We recommend regular filter replacements, at least every 6 months with normal use.
    • Washing or vacuuming the white HEPA style material will damage the fibers and is not recommended.
    • 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.
    • Product ID: BF25A-Silver
    No warranty on Alen air purifier filters.
    Customer reviews for the Alen A350/A375 HEPA-Silver Filter
    Alen A350/A375 HEPA-Silver Filter has a rating of 4.9 stars based on 207 reviews.