Dyson Purifier Big+Quiet Formaldehyde BP04 in Prussian blue and gold
Our quietest, most powerful and advanced air purifier.¹ With exclusive K-carbon filter. CO₂ sensing. Captures 3x more NO2.² Also cools you.
Dyson Purifier Big+Quiet Formaldehyde in Prussian blue and gold
Our quietest, most powerful air purifier.¹ Purifies large spaces up to 100m.³ And cools you in hot weather.
Our most advanced filtration system yet. With three-stage HEPA H13-grade, K-Carbon and Selective Catalytic Oxidisation filters.
Removes gases,⁴ odours, dust, allergens, viruses and bacteria. Captures 99.95% of particles as small as 0.1 microns.⁵ Captures 99.9% of viruses.⁶ Reduces your exposure to pollen, pet dander and mould spores. Captures three times more NO₂, a common urban pollutant.² Removes smoke particles from wildfires.⁷ Destroys formaldehyde.⁸ Alerts you when CO2 levels are too high.
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Weight
11.9 kg
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Height
830 mm
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Length
43.4 cm
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Width
41.5 cm
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Dyson Purifier Big + Quiet Formaldehyde
Overall rating
In the box
Dyson Purifier Big + Quiet Formaldehyde
Our quietest, most powerful purifier.¹ For a healthier home environment.
Purifies any room – including large, open-plan spaces.³ Captures pollutants, allergens and odours, yet does it quietly.¹
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Allergens, pollen and airborne mould spores
Allergy season can be difficult. The Dyson Purifier Big+Quiet reduces your exposure to allergens, such as pollen and airborne mould spores. For cleaner indoor air.
Allergens, pollen and airborne mould spores
Allergy season can be difficult. The Dyson Purifier Big+Quiet reduces your exposure to allergens, such as pollen and airborne mould 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 99.9% of viruses.⁶
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 99.9% of viruses.⁶
Pet odours, allergens and dander
Pets can bring unwanted odours and allergens into the home. Dogs and cats shed dander, releasing microscopic skin, saliva and urine allergens into the air.
Pet odours, allergens and dander
Pets can bring unwanted odours and allergens into the home. Dogs and cats shed dander, releasing microscopic skin, saliva and urine allergens into the air.
Cooking odours, pollutants and nitrogen dioxide
Cooking or burning any type of fuel can release odours and potentially harmful pollutants like NO₂. The Dyson Purifier Big+Quiet is 30% faster at reducing cooking odours by 97%.¹¹
Cooking odours, pollutants and nitrogen dioxide
Cooking or burning any type of fuel can release odours and potentially harmful pollutants like NO₂. The Dyson Purifier Big+Quiet is 30% faster at reducing cooking odours by 97%.¹¹
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, mould 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, mould spores and bacteria.
Key features
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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 22 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.¹⁰
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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.¹⁰
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.¹⁰
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.
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 99.95% of ultrafine particles², 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™ app⁶ – 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 100m². 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 5 years.
The Dyson Purifier Big+Quiet Formaldehyde air purifier range is engineered to remove 99.95% of ultrafine particles², such as dust, allergens, odours, gases³ like benzene and nitrogen dioxide and even formaldehyde gas.⁵
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 five years or sooner. The K-Carbon filter should be replaced every two years, or sooner if required. The Selective Catalytic Oxidisation (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 one metre 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.
- 2 Tested for filtration efficiency at 0.1 microns (EN1822, ISO29364).
- 3 Tested to JEM 1467 (acetic acid, acetaldehyde, ammonia), GB/T18801 (formaldehyde, benzene) and DTM-003282 (NO2). Gas capture rates vary.
- 4 Compared to absorption by the standard carbon filter in Dyson Purifier Big+Quiet Formaldehyde (BP03).
