Classic 400 Series Particle Filter
Subscribers get a 15% discount on replacement filters, free shipping, and automatic delivery right when it's time to replace. Tax and shipping fees may apply in some areas.
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Particle filters minimize allergy triggers, viruses, and bacteria for a healthier home environment with high filtration efficiency. Together with HEPASilent™ filtration technology, our particle filters remove 99.97% of airborne particles down to 0.1 microns, including pollutants such as pollen, dust, pet dander, mold spores, viruses, bacteria, fine smoke particles and more.
Unlike generic look-a-likes, genuine Blueair replacement filters are specifically designed to maintain superior performance over time and ensures your warranty remains intact.
When it's time to replace your filter (about every six months), start by unplugging your air purifier. Open the back door to remove the old filter and vacuum away any dust on the inside. Insert the replacement filter, close the back door, and plug back in. Easy.
Our unique HEPASilent™ filtration technology allows our filters to be less dense. Less dense filters require less air pressure— resulting in quieter and more energy efficient air purifiers.
Particle filter removes airborne pollutants and allergens such as pollen, dust, pet dander, mold spores, bacteria, viruses, fine smoke particles, and more.
The filter structure traps even the smallest particles and resists clogging to maintain maximum airflow.
This filter is recyclable, so the only thing you're adding back into the environment is clean air. Please check your local recycling facilities for availability.
Filter fibers resist bacteria and mold growth, to ensure you'll never put bacteria and mold back into the air.
To maintain optimum performance, we recommend changing your filter about once every 6-months when used 24 hours a day.
Filter TypeFilter with thermally bonded fibers containing polypropylene and polyethylene free of chemicals and binders. Fiber shedding resistant.
Dimensions(HxWxD)21 x 10 x 3.8 in (521 x 250 x 95 mm) in
Filter frame materialPaper
Filter recyclingYes, please check your local recycling facility for availability.
Recommended filter change6 months (4,380 hours)
Number of filters1
This filter is compatible with the following Classic family models: 402, 403, 405, 410, 450E, 455EB, 480i.
No, Blueair filters are less dense than traditional HEPA filters, allowing our air purifiers to be quieter and more energy-efficient. Instead of HEPA filters, we use a combination of electrostatic and mechanical filtration that we call HEPASilent™ technology to achieve the same level of filtration efficiency as 'True HEPA' - with less energy and noise.
Purchasing a filter subscription saves you 15% on all future replacement filter orders + free shipping and extends your limited 1-year product warranty to a lifetime warranty for as long as you remain a subscriber. At the time of purchase, the subscription will automatically schedule filter deliveries at the recommended six months. You can always adjust this timeframe from the 'My Account' section.