Classic 400 Series Particle Filter

Classic 400 Series Particle Filter

Compatible with 403 • 405 • 450E • 402 • 410 • 455EB • 480i
Would you like a filter subscription?
Get fresh filters delivered to your door, when you need them
Select your shipping frequency
Blueair recommends a filter change every 6 months
Do you need a filter now?

Save 15% with a subscription

$89.99
Blueair Image
Looking to filter odors, chemicals, or smoke?
Blueair close up of particle filter material for Blueair Classic filter

Particle removing filtration, air cleaning carbon, all in one filter

When used as part of our HEPASilent™ filtration process, the Particle + Carbon filter provides protection against odors, chemicals, gases and 99.97% of airborne pollen, dust and germs.

Blueair graphic showing HepaSilent technology filtration - genuine filter replacement logo

Look-a-likes don't stand a chance

Genuine Blueair filters are specifically designed to enable more air flow through the filter media. When combined with electrostatic filtration this results in faster cleaning than traditional HEPA filtration.

Blueair Classic air purifier next to window in living room
Need to filter more than particles?

Does your household air require the added ability to filter both particles and annoying household odors, chemicals, and smoke?

Blueair back view of classic air purifier

Keep your filter fresh and pollutants at bay

We recommend replacing your air purifier filter about every 6 months (when used 24 hours a day). That's because, just like a vacuum cleaner, over time air purifier filters can get clogged with pollutants, and even let unpleasant odors back into the room.


It's simple to replace in just a few quick steps, and easy to save with our filter subscription program.

Details
Blueair icon- less noise and energy
More energy efficiency, with less density

Our unique HEPASilent™ filtration technology allows this filter to be less dense, meaning it requires less air pressure. With it installed, your air purifier will operate quieter while using less energy.

Blueair icon for Two pollutant types, two layers of defense
Minimizes unhealthy allergens and germs

The particle filter layer helps to minimize the airborne particles that can trigger allergy symptoms, including pollen, dust, mold spores, pet dander, viruses, bacteria, and fine smoke particles.

Blueair icon- Keeps clean air flowing, resists clogging
Keeps clean air flowing, resists clogging

This filter's unique structure is designed to filter high volumes of air while trapping even the smallest particles. It maintains maximum airflow because it's engineered to resist clogging.

Blueair icon - Easy, earth friendly disposal
Recyclable

Check your local recycling facilities for availability and further guidance​.

Blueair bacteria icon
Helps to prevent bacteria & mold

Filter fibers work to resist bacteria and mold growth in your home, helping to ensure you're never putting bacteria and mold back into the air.

Blueair icon-  Works 24/7, for six months straight
Works 24/7, for six months straight

To maintain optimum performance, we recommend changing your filter about once every 6-months when used 24 hours a day. Don't forget to save with our subscription program.

  • Filter Type
    Filter 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
  • Product weight
    1.94lbs
  • Filter frame material
    Paper
  • Filter recycling
    Yes, please check your local recycling facility for availability.
  • Recommended filter change
    6 months (4,380 hours)
  • Number of filters
    1
Blueair Classic 400 particle filter
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.

Are Blueair filters HEPA?

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 - with less energy and noise.

What is a filter subscription?

Purchasing a filter subscription saves you 15% on all future replacement filter orders + free shipping and extends your limited 1-year product warranty to an extended 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.

Subscribe and stop thinking about filter quality

⁰ Based on Blueair internal tests


¹A flat shipping rate of $25.00 will be charged on filter shipments to Alaska and Hawaii. Additional charges may apply for shipments over 30 lbs.