Acoustic Academy

Blueair Classic 400 Series Air Purifier

  • The Blueair Classic 405 uses Blueair HEPASilent™ technology to remove virtually all airborne pollutants.  Designed for mid-sized rooms, and recommended by Asthma Allergy Nordic, the Classic 405 gets the job done – quietly and effectively. The association recommends operating the purifier on speed 2, max room size 40 m².

    The Blueair Classic 480i air purifier fits almost every need, removing virtually all allergy and asthma triggers as well as other airborne pollutants. Now Wi-Fi enabled with integrated air quality sensors. The Blueair Aware air quality sensors are integrated into the Blueair Classic 480i. At a glance, you can see the air quality in your room. 

    All five Quiet Mark awarded Blueair air purifiers have been accredited with the prestigious Good Housekeeping Institute stamp of approval. The Blueair Classic 405 has also been awarded with a Which? Best Buy.


    • Room size: 40m2 (434 sq ft)
    • CADR (Smoke): 476m3 per hour (280 cfm)
    • CADR (Dust): 510m3 per hour (300 cfm)
    • CADR (Pollen): 510m3 per hour (300 cfm)
    • Consumption: 15 - 90 watts


Quiet Mark product reviews are unbiased, independent advice you can trust. Quiet Mark only awards products following expert acoustic assessments and real-world testing. If you click on a retailer link, we may sometimes receive affiliate commission, but we never allow this to bias our service. All commission received will help fund the internationally recognised UK Noise Abatement Society Charitable Foundation.

Sound Made Simple

Acoustics Academy’s Sound Made Simple guide clarifies complex acoustic terminology with insights to design with sound.