Blueair 400 Series Replacement Particle Filter

Genuine performance, superior quality
Unlike generic look-a-likes, genuine Blueair replacement filters are specifically designed to maintain superior performance over time and ensures your warranty remains intact.

Uncompromised particle removal
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.

Less dense filters make the difference
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.

Removes allergens & germs
Particle filter removes airborne pollutants and allergens such as pollen, dust, pet dander, mold spores, bacteria, viruses, fine smoke particles, and more.

Traps particles for good
The filter structure traps even the smallest particles and resists clogging to maintain maximum airflow.

Prevent bacteria & mold
Filter fibers resist bacteria and mold growth, to ensure you’ll never put bacteria and mold back into the air.

6-month filter life
To maintain optimum performance, we recommend changing your filter about once every 6-months when used 24 hours a day.

What Blueair models are compatible with this filter?
This filter is compatible with the following Classic family models: 402, 403, 405, 410, 450E, 455EB, 480i.

Alternative Smokestop version also available

Made of enhanced active carbon to remove gaseous pollutants such as cigarette and cigar smoke or other VOCs (volatile organic compounds, including household paints and other chemicals). You may notice a slight odor from the enhanced active carbon when the filter is first used; this will quickly dissipate. If you think you would prefer a Smokestop filter for your 400 series Blueair purifier, then click here to go to the Smokestop replacement filter page.