Blue Pure 121 Extra Protection Particle + Carbon Filter

Compatible with Blue Pure 121
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Extra protection against gases & odors

A layer of activated carbon pellets absorbs heavy gases from your home environment, including those caused by off-gassing, volatile organic compounds (VOC), smog, chemicals, and annoying household odors from pets, smoke, and cooking.

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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.

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Replacement is easy

When it's time to replace your filter (about every six months), start by unplugging your air purifier. Gently press the release buttons on either side until you hear a click, and lift off the top. Remove the old filter and replace it with a new one. Replace the top portion of the air purifier -it will click when it's in place- and plug back in. Easy.

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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.

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Remove allergens & 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.

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Deodorization put to the test

In deodorization testing, the Blue Pure 121 Extra Protection Filter removed over 90% of airborne ammonia within one hour¹.

¹Deodorization performance used ammonia as an odor indicator; testing carried out by Guangzhou Testing Center of Industrial Microbiology, China, and The Guangzhou CAS Test Technical Services Co., Ltd, China, according to the methods described in the Chinese standard GB/T18801-2015 and the Japanese standard JEM 1467-2015.

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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​.

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6-month filter life

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

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Traps particles for good

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

  • Filter Type
    Carbon + Particle filter. Activated coconut shell carbon pellets in honeycomb envelope. Non-woven Polypropelyne fibers. Free of chemicals and binders. Fiber shedding resistance.
  • Dimensions(HxWxD)
    20.1 x 20.7 x 3.1 in in
  • Product weight
  • Filter frame material
  • Filter recycling
    Yes, please check your local recycling facility for availability.
  • Recommended filter change
    6 months (4,380 hours) when used 24 hours a day
  • Number of filters
What Blueair models are compatible with this filter?

This filter is compatible with the Blue Pure 121 model.

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 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.

Learn more about filter subscriptions

How does this filter differ from the Blue Pure 121 Particle + Carbon filter?

This filter features highly-porous, activated carbon pellets for extra protection against harmful gaseous pollutants like odors, smog, exhaust, volatile organic compounds (VOC), smoke odors, and chemicals. The Combination Particle + Carbon filter uses an activated carbon mesh sheet, designed to remove light household odors and chemicals.