Can the medium efficiency filter be repeatedly cleaned?

1. Permanent or Washable HEPA Filters

• Permanent HEPA filters: These are not designed to be rinsed with water. Instead, they can be gently cleaned using a vacuum cleaner with a brush attachment.

  • Set the vacuum to the lowest speed.

  • Lightly vacuum the surface to remove dust, hair, and mites.

  • Avoid pressing down on the filter material, as this can damage the fibers.

• Washable HEPA filters: These can be rinsed with cold water.

  • Rinse thoroughly until trapped particles are released.

  • Do not use detergents or hot water, as they may damage the filter media.

  • Allow the filter to air dry completely (usually 24 hours) before reinstalling.

  • You can gently shake off excess moisture to speed up drying, but never use heat sources like hair dryers.

2. General Safety Precautions

• Always wear a mask when cleaning to avoid inhaling dust or contaminants.

• Clean filters outdoors if possible, to prevent pollutants from re-entering your home.

• Follow the manufacturer’s instructions carefully—some “true HEPA” filters are not washable and must be replaced instead of cleaned.

3. Other Filter Types in Air Purifiers

• Pre-filters: Usually washable. Rinse under running water until clear, or gently brush off debris.

• Activated carbon filters: Cannot be washed with water. Instead:

  • Use a vacuum cleaner to remove dust and dirt.

  • If odors are strong, place the filter in direct sunlight for 1–2 hours to refresh it.

• Foam filters: Can be rinsed and towel-dried, then left for 24 hours to dry completely.

4. Key Takeaways

• Permanent HEPA filters → vacuum only.

• Washable HEPA filters → rinse with cold water, air dry fully.

• True HEPA filters (non-washable) → replace when dirty.

• Pre-filters and carbon filters → clean gently, but replace when performance drops.