Classic 405
Classic 405

Classic 405

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Overview

The Classic 405 delivers high performance thanks to HEPASilentᵀᴹ technology, which combines electrostatic and mechanical filtration technologies.


This combination, pioneered by Blueair delivers high Clean Air Delivery Rate (CADR) with whisper-silent operation and high energy efficiency. In fact, the Classic 405 works so quietly that you might have to check to make sure it’s switched on.

Optimal air for medium spaces

Filters the air in a 434 ft² space in about 12.5 min¹ (4.8x an hour, based on AHAM recommended removal rate) to effectively lower particle levels and maintain a comfortable environment in medium spaces like master bedrooms, living rooms, and playrooms.


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Wi-Fi enabled

The Classic 405 air purifier allows you to take full control of your indoor air quality with intelligent smartphone control and Alexa compatibility. 


Blueair Classic in room filtering air
Allergen & germ removal

Comes standard with a particle filter to remove airborne allergy and asthma triggers like pollen, dust, pet dander, mold, smoke and more.


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Sound design you can sleep on

Get clean air while you sleep without noise disruption. Quiet Mark approved for operating at a whisper quiet 32 dB on its lowest speed, and no louder than the 52 dB white noise of a floor fan on its highest speed.




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Alexa compatible
Change settings remotely from your smartphone via the Blueair app or connect with your Amazon Alexa enabled device for voice control.
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Customize settings
Adjust air purifier settings like child lock, night mode schedule, LED brightness, and more to fit your lifestyle.
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4.8 air changes an hour

Completely filters room air at the industry recommended rate of 4.8x an hour to effectively lower particle levels (rooms up to 40 m²).

  • Wi-Fi connectivity for remote control
    Yes
  • On/off timer
    Yes (via Blueair App)
  • Filter replacement indicator
    Yes
  • Speed control options
    1 - 2 - 3
  • Wheels
    Optional
  • Integrated air sensors
    No
  • Dimensions(HxWxD)
    590 x 500 x 275 mm
  • Product weight
    15 kg
  • Energy consumption
    15 - 90 Watts
  • Sound level
    32 - 52 dB(A)
  • Air outlet
    Side
  • Air inlet
    Side
  • Recommended room size
    40 m2
  • Air changes per hour (ACH)
    4.8
  • Clean air delivery rate (CADR) - Pollen
    510m³ per hour (300 cfm)
  • Clean air delivery rate (CADR) - Dust
    510m³ per hour (300 cfm)
  • Clean air delivery rate (CADR) - Smoke
    476m³ per hour (280 cfm)
  • Wi-Fi connectivity for remote control
    Yes
  • On/off timer
    Yes (via Blueair App)
  • Filter replacement indicator
    Yes
  • Speed control options
    1 - 2 - 3
  • Integrated air sensors
    No

Guarantee clean air for years to come with extended warranty coverage when you register your air purifier.

How does this model differ from the Classic 480i?

The 480i model comes with a built-in sensors for particles (PM2.5), and gases/Volatile Organic Compounds (VOC), temperature and humidity, as well as the AUTO mode setting.

I've replaced my filters, now how do I reset the filter replacement indicator?​

Press and hold down the orange filter status LED for 10 seconds to reset the replacement filter indicator. ​​

I'm having Wi-Fi connectivity issues, what can I do to troubleshoot?

First, make sure your Wi-Fi network is connected to the internet, and check that your network name and password are correct. You can also try unglugging the cord from the electrical outlet and plug it back in again.

How do I register for warranty?

To extend the Limited Warranty from one year, simply complete the product registration form within (60) days of purchase or register through the Blueair mobile app.​

How do I disable the Wi-Fi function?

Press the Wi-Fi and filter buttons simultaneously for at least 3 seconds. To turn on the Wi-Fi function again, press only the Wi-Fi button for at least 3 seconds.