Elevate your indoor air quality with the Dyson Purifier Big Quiet Formaldehyde. Projects air over 10 metres, to purify large spaces.1 Quietly. Captures allergens and 99.95% of ultrafine particles.2 Even destroys formaldehyde.3 The Big+Quiet uses cone aerodynamics to deliver powerful, long-range projection – circulating air and driving distant pollutants back through sealed filters. For whole-room purification with HEPA H13 filtration even in large spaces.4
The ability of purifying a large room up to 100m2 (10m*10m) proven from a Computational Fluid Dynamics (CFD) modelling, with the purifier placed in a corner of the room running at the maximum flow and horizontal projection reaching 10 metres to fully mix the room. The projection distance was measured from internal flow reach testing under the maximum directional airflow. The actual performance in real life condition may vary.
Tested for filtration efficiency at 0.1 microns (EN1822, ISO29364). Gas capture rates may vary.
Third party full machine testing based on GB/T 18801-2022 formaldehyde cumulative clean mass testing with continuous injection until plateau of formaldehyde CADR is achieved. Results may vary in practice.
Tested to JEM 1467 (acetic acid, acetaldehyde, ammonia), GB/T18801 (formaldehyde, benzene) and DTM-003282 (NO2). Capture rates vary.
Quiet and powerful
Cone aerodynamics’ creates a condensed jet of air for powerful long-range projection. The acoustically engineered motor bucket means it records just 56dBA of sound power at full speed. Quietly projects air at a 0°, 25° or 50° angle to ensure purified air is circulated around the whole room.
Auto mode
Constantly monitors your air quality, automatically adjusting airflow to save energy – purifying only when it's needed. Breeze mode provides a unique algorithm varies the airflow to mimic a gentle breeze. Night mode monitors and purifies using the quietest settings, with a dimmed display.
Sealed Purifier
Sealed airflow and filtration system. So the whole machine, not just the filter, meets HEPA H131 standard. What goes inside, stays inside.
Real-time monitoring
A suite of intelligent sensors detects pollutants across a whole room. the unique algorithm cross-checks data every second, analysing your air at a molecular level – automatically reacting to purify and display live results on the LCD screen and in the MyDyson™ app.
Easy to use
Hygienic HEPA filter replacement means you never have to touch the filters. Dispose of them with one click. App & Voice control. Control and monitor air your quality from anywhere using the MyDyson app. Even with hands-free with compatible voice services.2 Remote controll is Curved and magnetized to store neatly on the top of the machine.
Particle challenge by DEHS oil specified in EN1822 within a chamber specified in ASTM F3150. Tested in Max Mode at IBR US, for whole machine efficiency above 99.95%.
App functionality may vary per market. Requires Wi-Fi and app enabled device. Standard data and messaging rates may apply. Requires iOS version 10 or above, or Android version 5 or above. Your mobile device must have Bluetooth 4.0 support.
Dyson Big+Quiet Air Purifier
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