Dyson Purifier Big+Quiet Formaldehyde BP04 (Prussian Blue/Gold)
Our quietest, most powerful and advanced air purifier.
With exclusive K-carbon filter. CO₂ sensing.
Captures 3x more NO₂, a common urban pollutant.⁴
And cools you.³
Dyson Purifier Big+Quiet Formaldehyde
Our quietest, most powerful and advanced air purifier. Purifies large spaces and projects air over 32 feet.¹ And cools you in warmer weather.³
Our most advanced filtration system yet. With three-stage HEPA H13-grade, K-Carbon and Selective Catalytic Oxidization filters.
Removes gases,² odors, dust, allergens*, viruses and bacteria.** Captures 99.97% of particles as small as 0.1 microns. Reduces your exposure to pollen, allergens*, and pet dander. Captures three times more NO₂, a common urban pollutant.⁴ Removes smoke particles from wildfires.¹¹ Destroys formaldehyde.⁺ Alerts you when CO₂ levels are too high.⁶
Specifications
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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
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Dyson Purifier Big + Quiet Formaldehyde BP04 (Prussian Blue/Gold)
Overall rating
In the box
Dyson Purifier Big + Quiet Formaldehyde BP04 (Prussian Blue/Gold)
Our quietest, most powerful purifier. For a healthier home environment.
Purifies any room - including large, open-plan spaces.¹ Captures pollutants, allergens* and odors, yet does it quietly.
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Advanced automatic sensing technology
Dyson air purifiers automatically diagnose air quality – sensing and capturing airborne particles, and displaying real-time air quality reports on your LCD screen or MyDyson™ app.⁵
Advanced automatic sensing technology
Dyson air purifiers automatically diagnose air quality – sensing and capturing airborne particles, and displaying real-time air quality reports on your LCD screen or MyDyson™ app.⁵
Allergens, pollen and black mold spores
Allergy season can be difficult. The Dyson Purifier Big+Quiet reduces your exposure to allergens*, such as pollen and airborne mold spores.** For cleaner indoor air.
Allergens, pollen and black mold spores
Allergy season can be difficult. The Dyson Purifier Big+Quiet reduces your exposure to allergens*, such as pollen and airborne mold spores.** For cleaner indoor air.
Bacteria, viruses and microscopic particles
Bacteria and viruses can spread more easily when we spend more time together indoors. The Dyson Purifier Big+Quiet is proven to capture viruses.**
Bacteria, viruses and microscopic particles
Bacteria and viruses can spread more easily when we spend more time together indoors. The Dyson Purifier Big+Quiet is proven to capture viruses.**
Pet odors, allergens* and dander
Pets can bring unwanted odors and allergens into the home. Dogs and cats shed dander, releasing microscopic skin, saliva and urine allergens into the air.*
Pet odors, allergens* and dander
Pets can bring unwanted odors and allergens into the home. Dogs and cats shed dander, releasing microscopic skin, saliva and urine allergens into the air.*
Cooking odors, pollutants and nitrogen dioxide
Cooking or burning any type of fuel can release odors and potentially harmful pollutants like NO₂, which can build up in your home.
Cooking odors, pollutants and nitrogen dioxide
Cooking or burning any type of fuel can release odors and potentially harmful pollutants like NO₂, which can build up in your home.
Household dust and airborne particles
Household dust is a complex mixture of microscopic particles, including dead skin cells, dust mites, dust mite droppings, small insects, pollen, smoke, mold spores and bacteria.
Household dust and airborne particles
Household dust is a complex mixture of microscopic particles, including dead skin cells, dust mites, dust mite droppings, small insects, pollen, smoke, mold spores and bacteria.
Real-time air quality diagnosis
In Auto mode, our integrated sensors detect pollutants from around the room and analyse air quality in real time, cross-checking the data every second, then automatically trigger purification, if required.
Machine highlights
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50% quieter, even at full power
Acoustically engineered to produce less noise. Night mode is 50% quieter than any other Dyson purifier. With a Sleep timer so you can set it and forget it.
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Powerful projection to cool you down
Delivers over 21 gallons of purified air per second. Adjust the angle of airflow between 0°, 25° or 50°, or mimic the feeling of refreshing air indoors using Breeze mode.
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Long-lasting filter
The HEPA H13-grade filter lasts up to 11 years.⁹ Remove and dispose in one click.
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Control via the app
Monitor what’s been captured, set schedules, browse reports, and more with the MyDyson™ app.⁵
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Always sensing
In Auto mode, your purifier reacts automatically to remove pollutants, only using energy when needed.
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Alerts you to high CO₂ levels
Reports and alerts you when CO₂ levels are harmfully high.
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Easy to manoeuvre
Discreet, hidden wheels designed for hard surfaces let you easily move your machine around the room.
Discover the pioneering technology inside
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Our most advanced suite of sensors
A suite of sensors interact with our unique algorithm, cross-checking pollution data every second and reporting live results onscreen or the MyDyson™ app.⁵
Our most advanced suite of sensors
A suite of sensors interact with our unique algorithm, cross-checking pollution data every second and reporting live results onscreen or the MyDyson™ app.⁵
Our most advanced filtration system
HEPA-H13, K-carbon and SCO filtration captures particles and gases including formaldehyde – within a fully sealed machine. So what goes inside, stays inside.¹²
Our most advanced filtration system
HEPA-H13, K-carbon and SCO filtration captures particles and gases including formaldehyde – within a fully sealed machine. So what goes inside, stays inside.¹²
Exclusive K-carbon filter
Impregnated with potassium carbonate, it adsorbs three times more NO₂.² Removing a common and potentially harmful pollutant. And lasts two years.⁹
Exclusive K-carbon filter
Impregnated with potassium carbonate, it adsorbs three times more NO₂.² Removing a common and potentially harmful pollutant. And lasts two years.⁹
Cone aerodynamic projection
Drives high-velocity air jets over the machine’s dome which coalesce to project a focused stream of air. To purify large spaces, quietly.³ Or cool you when required.
Cone aerodynamic projection
Drives high-velocity air jets over the machine’s dome which coalesce to project a focused stream of air. To purify large spaces, quietly.³ Or cool you when required.
Get more with the MyDyson™ app▴
Discover what you get with the app.
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Expert guides
Learn how to improve your indoor environment.
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Machine upgrades
See how to upgrade to the latest Dyson technology.
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Priority access
Latest Dyson technology and events.
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Exclusive offers
Gain access to exclusive offers through the app.
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Frequently asked questions
The Dyson Purifier Big+Quiet Formaldehyde is our most advanced, quietest, and most powerful air purifier. As our latest top-of-the-range purifier, it uses cone aerodynamics to deliver powerful, long-range air projection – circulating purified air and driving even distant pollutants back through sealed filters. For whole-room purification – capturing 99.97% of fine particles, even in large spaces.¹ You can control your air quality, wherever you are. At the touch of a button you can monitor the air quality levels in your home using the MyDyson™ app⁵ – viewing in real-time the benefits of owning an air purifier.
Not all purifiers are equal. Getting the right size purifier, with the best projection is essential to ensure it will effectively purify the air in your space. We've tested the Dyson Purifier Big+Quiet Formaldehyde extensively – to ensure the sensors, filtration system and motor work together to purify a large living space. It has the projection power to purify spaces up to 32 feet.¹ The Dyson Purifier Big+Quiet Formaldehyde also has our largest ever filtration system – and the 360° HEPA H13-grade filter doesn't need replacing for up to 11 years.⁹
The Dyson Purifier Big+Quiet Formaldehyde air purifier range is engineered to remove 99.97% of fine particles, such as dust, allergens*, odors, gases² like benzene and nitrogen dioxide and even formaldehyde gas.
The Dyson Purifier Big+Quiet Formaldehyde has our most advanced filtration system. We recommend replacing the 360° HEPA H13-grade filter after using it for up to 11 years or sooner. The K-Carbon filter should be replaced every two years, or sooner if required. The Selective Catalytic Oxidization (SCO) 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 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 aren’t visible when the machine is upright. These wheels are designed for hard floors – so you can move your purifier around easily.
▴The MyDyson™ app is only compatible with select Dyson products. For a list of compatible products, please click here.
*Allergens refers to nonliving material.
⁺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.
¹Testing for PM2.5 purification completed in a large testing chamber following relevant Dyson testing methods. Results may vary in practice.
²Gas capture rates may vary
³Fan; not air conditioning unit.
⁴Compared to adsorption by the standard carbon filter in Dyson Purifier Big+Quiet Formaldehyde (BP03).
⁵Requires device to run app, Wi-Fi or mobile data, Bluetooth 4.0 support, and iOS version 10 or Android version 5 (or above). Standard data and messaging rates may apply. Refer to the MyDyson app for compatible voice services.
⁶Levels selected based on scientific literature. Ventilation alert when CO2 levels are 1500ppm or above.
⁹Particle challenge by DEHS oil specified in EN1822 within a chamber specified in ASTM F3150.
¹⁰Not intended as a product claim. Refer to individual Dyson models for specific capture claims.
