Dyson Purifier Big + Quiet Formaldehyde BP04 (Prussian Blue/Gold)
Purifies large spaces.⁺ Quietly.
Detects and destroys formaldehyde, permanently.¹
Removes gases and odors.³ Captures 3x more NO₂.⁴
Captures allergens and 99.97% of fine particles.²
Senses and reports CO₂ levels in real-time.
Dyson's largest ever filtration system.
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Weight
26.24 lb
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Oscillation/Angle
50 degrees
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Number of speed settings
10
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Height
32.68 in
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Length
16.34 in
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Width
17.09 in
In the box
Dyson Purifier Big + Quiet Formaldehyde BP04 (Prussian Blue/Gold)
Dyson Purifier Big + Quiet Formaldehyde BP04 (Prussian Blue/Gold)
Features
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Long-range projection and circulation
Our latest purifier uses cone aerodynamics to deliver powerful, long-range projection – circulating air and driving even distant pollutants back through sealed filters. For whole-room purification, even in large spaces.⁺
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Quiet, even at full power
An acoustically engineered motor bucket records just 56dBA of sound power at full-speed. With no compromise on performance.
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Adjust your airflow
Adjust the angle of airflow at 0°, 25° or 50°, or mimic the feeling of refreshing air indoors using Breeze mode.
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Control your air quality wherever you are
The MyDyson™ app gives you autonomy over your air quality. View which particles have been captured, set schedules, browse reports, and more.▴
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Auto mode
With the Auto mode feature, your purifier can sense, capture and report on pollutants in your home in real-time.
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Hygienic filter replacement
A hygienic replacement mechanism allows you to dispose of the HEPA filter in one click.
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Discreet wheels
Easily manoeuvre your machine across a room. Designed for hard surfaces, the wheels are completely hidden from view.
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Smart home purification
Connect and then control your air quality, hands-free, with compatible smart home voice services.¹³
Technology
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Adsorbs 3x more NO₂
Our K-Carbon filter is impregnated with potassium carbonate (K₂CO₃) and can adsorbs three times more nitrogen dioxide⁴ - one of the most common indoor pollutants, produced by gas appliances, open flames, and wood burning stoves.
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Senses and reports CO₂ levels in real-time
Increased CO₂ levels can impact cognitive function. Dyson Purifier Big+Quiet Formaldehyde intelligently senses and reports CO₂ levels, notifying when they exceed recommended volumes⁶, alerting you on the MyDyson™ app▴ or LCD screen when to ventilate by opening a door or window.
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Senses and reports, automatically
A suite of sensors, including a lifetime solid-state formaldehyde sensor, detects pollutants across a whole room. Our 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.▴
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Destroys formaldehyde, permanently⁵
A catalytic filter continuously traps and breaks down formaldehyde molecules into water and CO₂⁵. And it never needs replacing.
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Captures gases and ultrafine particles²
The HEPA H13 grade filter captures 99.7% of fine particles as small as 0.1 microns², while an activated carbon filter removes odors and gases.³
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Fully-sealed to HEPA H13 grade⁶
Three phases of purification sit within our fully-sealed machine to trap pollutants inside, removing them from the air you breathe. Giving you reassurance that what goes inside, stays inside.⁶
Frequently asked questions
Sources of formaldehyde can include woods, glues, paints, varnishes, air fresheners, mattresses, household cleaners, and some fabrics found in household flooring and furniture. The Dyson Formaldehyde air purifier range includes a catalytic filter that traps formaldehyde in tunnels, breaking it down into water and CO₂.⁵
Our Direct exclusive model comes in a new Prussian blue and gold colour. It has a K-Carbon filter that adsorbs 3x more NO₂⁴ – a common indoor pollutant. And a new integrated sensor that detects and reports CO₂ levels, notifying you when they exceed recommended limits.⁶
The Dyson Purifier Big+Quiet Formaldehyde has our largest ever filtration system. We recommend replacing the H13 grade HEPA filter after using it for up to five years or sooner. The K-Carbon filter should be replaced every two years or sooner if required. The selective catalytic oxidisation filter is permanent and never needs replacing.
The Dyson Purifier Big+Quiet Formaldehyde has been designed to work from the corner of a room, at least three and a half feet away from the wall. For optimal performance we recommend projecting air either along a wall or across the room. You can adjust the angle of projection to suit your preference.
The Dyson Purifier Big+Quiet Formaldehyde has discreet wheels which are not visible when the product is upright. These wheels are designed for hard floors – so you can move your purifier around easily.
Choose your model
▴The MyDysonTM app is only compatible with select Dyson products. For a list of compatible products, please click here.
⁺Testing for PM2.5 purification completed in a large testing chamber following relevant Dyson testing methods. Results may vary in practice.
¹Third party full machine testing based on GB/T 18801-2015 formaldehyde cumulative clean mass testing with continuous injection until plateau of formaldehyde CADR is achieved. Results may vary in practice.
4Compared to adsorption by the standard carbon filter in Dyson Purifier Big+Quiet Formaldehyde (BP03).
⁶Levels selected based on scientific literature. Ventilation alert when CO2 levels are 1500ppm or above.