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Classic 405 Air Purifier with Particle Filter

Modern air purifier that completely filters the air in a 40m² room every 12 minutes. Comes with a particle filter to remove airborne allergy and asthma triggers like pollen, dust, pet dander, mold, smoke, bacteria, viruses, and more.

Medium rooms

Filters room air at the industry-recommended rate of 5x an hour (or about every 12 minutes) in a 40 m² room to effectively lower particle levels and maintain a comfortable environment in master bedrooms, living rooms, and playrooms.


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

Powerful filtration

Blueair’s unique combination of electrostatic and mechanical filtration that they call HEPASilent™ filtration technology sets us apart. The combination allows us to use filters that are less dense and require less air pressure than traditional HEPA filters without a loss in performance— resulting in quieter and more energy efficient air purifiers.

Built to last 

Housing made from durable, galvanized steel stands the test of time.

Customize settings

Adjust air purifier settings like child lock, night mode schedule, LED brightness, and more to fit your lifestyle.


Whisper quiet on the lowest speed (32 dB) and equivalent to the noise level of rainfall on the highest setting (52 dB).

Low energy consumption

Energy efficient (15-90 W) - so you can run this air purifier 24/7, knowing it uses less energy than a traditional lightbulb.

Hidden control panel

Manually check Wi-Fi and filter status and adjust speed setting at any time from the control panel located under the flip-top lid.

For more specifications, see the datasheet in the downloads tab.

Product Attributes
Manufacturer number:200017
Product weight:14.0 kilograms
Technical specifications
Air quality monitoring: No
Clean air delivery rate (m³/h) - pollen: 510
Clean air delivery rate (m³/h) - dust: 510
App-controlled: No
Clean air delivery rate (m³/h) - smoke: 476
Fan speed settings: 3
Filter technology: HEPAsilent
Recommended filter change: 6-12 Month(s)
Recommended room size (2 ACH) 96m²
Recommended room size (5 ACH) 40m²
Sound level: 32-52dB
Timer: Yes
Energy Management
Power consumption: 15-90W