SUPPORT: Offline or call 1.800.522.1448
Blueair 400 Series HEPASilent Particle Filter

Blueair 400 Series HEPASilent Particle Filter

SKU: 457-0138

Blueair 400 Series HEPASilent Particle Filter replaces the filter that comes in Blueair 400 Series air purifiers. Removes 99.97% of airborne particles as small as 0.1 micron, even on the lowest fan speed.  Package contains one (1) filter.

Free shipping on all purchases over $79.00
100% Money Back Guarantee

MSRP: $75.00
Sale Price: $59.99

In Stock - Usually ships
within 24 hours

Works with Models:   Blueair 402, 403, 450E and Classic Air Purifiers

Blueair 400 Series HEPASilent™ Particle Filter replaces the filter that comes in Blueair 402, 403, 450E  and 405 Air Purifiers. Filter removes 99.97% of airborne particles as small as 0.1 micron, making Blueair HEPASilent filtration ideal for allergy and asthma sufferers, as well as the health-conscious person looking for high-efficiency particle removal.

Patented HEPASilent™ technology is more efficient than other air purifiers using traditional HEPA filtration, trapping up to six times more dirt, dust, allergens, pollen, smoke, mold spores, bacteria, and viruses to keep indoor air fresh, clean and healthy. Blueair 400 Series purifiers feature very high Clean Air Delivery Rates (CADR) in independent testing results by AHAM, a tribute to the efficacy of this filter. Change filter every 6 months for optimal performance.  Package contains one (1) Blueair 400 Series HEPASilent™ particle filter.


  • 3-stage filtration captures 99.7% of airborne allergens and particles to 0.1 micron
  • Removes dirt, dust, dander, pollen, allergens, mold spores, smoke, bacteria, viruses, and other airborne particles
  • Patented, high-efficiency HEPASilent™ technology:
    • delivers very high CADR ratings for cleaner air
    • improves overall performance of purifier
    • lowers noise level and energy usage
  • Replace filter every 6 months
  • Fits Blueair models 402, 403 and 450E and next generation Classic 405

Specifications for Blueair 402, 403, 450E and Classic 405 HEPASilent™ Particle Filters

• HEPASilent™ technology: Certified efficiency 99.97% for particles down to 0.1 micron, such as dust, pollen, bacteria, virus, pet dander, mold spores and other airborne particles
• Dimensions: 21 x 10 x 3.8 in.  (521 x 250 x 95 mm)
• Weight: 1.94 lbs  (880 g)
• Filter type: Gradient structured filter with thermally bonded fibers containing polypropylene and polyethylene free of chemicals and binders.∗ Naturally anti-bacterial. Fiber shedding resistant.
• Pleats: 92
• Effective filter area: 45.7 sq ft  (4.25 m²)
• Basis weight: 3.25 oz/yd²  (110 g/m²)
• Media thickness: 0.039 in.  (0.99 mm)
• Pleat separators: Non hazardous, EVA based, VOC free, UV resistant
• Recommended filter change: 6 months (4,380 hours) when used 24 hours per day

∗  Due to the 100% synthetic structure, the media is resistant to moisture so that it won't promote any microbial growth.

Filter Replacement for Blueair 400 Series Air Purifiers

  • For optimal performance replace filter every six (6) months.
  • Quick and easy filter change - just open unit, slide out old filter, then slide in new. No tools or disassembly required.
  • Please see Owner's Manual tab for full instructions on changing the filter.

Blueair 400 Series Air Purifiers

Please click below on the model number of your Blueair 400 Series air purifier to view its Owner's Manual:


Rated 5.00 out of 5 based on 1 review.

Powered by

I use the Blueair filter 24/7. My allergies are showing improvement especially this time of year when they are the worst.

Other people have also looked at: