Dyson Purifier Big+Quiet Formaldehyde BP04 (Prussian Blue/Gold) | Dyson

Dyson Purifier Big+Quiet Formaldehyde BP04 (Prussian Blue/Gold) $1,399.99

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Front view of the Dyson Purifier Big+Quiet Formaldehyde purifying fan.

Dyson Purifier Big+Quiet Formaldehyde BP04 (Prussian Blue/Gold)

Our quietest, most powerful air purifier. For large spaces up to 32ft. Also cools you.

Only at Dyson: exclusive K-Carbon filter technology captures 3x more NO₂ ³, and CO₂ sensor reports CO₂ levels in real-time.

Free shipping

2-year warranty

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Dyson Purifier Big+Quiet Formaldehyde BP04 (Prussian Blue/Gold)

Overall rating

87% of reviewers would recommend to a friend.

Read all reviews

Dominic

|

VERIFIED PURCHASER

Reviewed on 09/15/2024

|

Canada

The Dyson Purifier Big+Quiet Formaldehyde is a powerful, quiet, and highly effective air purifier for large rooms. It offers excellent filtration, including formaldehyde removal, with customizable airflow settings and a sleek design that blends seamlessly into corners. Though large, it’s easy to move on hard floors and delivers strong, consistent performance. Despite its high price, it’s a top choice for those seeking premium air purification in large spaces.

In the box

Dyson Purifier Big+Quiet Formaldehyde BP04 (Prussian Blue/Gold)

Dyson Purifier Big+Quiet Formaldehyde BP04 (Prussian Blue/Gold)

Remote control

Curved and magnetized to store neatly on the machine.

HEPA filter

Genuine Dyson HEPA Filter lifespan is 5 years.

K-Carbon filter

Captures 3x more NO₂. Genuine Dyson Activated K-Carbon Filter lifespan is every 2 years or when alerted by the MyDyson™ app.

The Dyson Purifier Big+Quiet Formaldehyde in a modern home with a spiral staircase.

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

Discover the air pollutants commonly found inside homes

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.

Light through a window reveals dust particles suspended in the air.

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.

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.

A house plant releasing pollen into the 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

A model sitting on the sofa with a drink.

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.

A dog shedding fur on the carpet.

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

A model frying salmon.

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.

Light through a window reveals dust particles suspended in the air.

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.

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.

A house plant releasing pollen into the 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

A model sitting on the sofa with a drink.

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.

A dog shedding fur on the carpet.

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

A model frying salmon.

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.

Light through a window reveals dust particles suspended in the air.

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

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.
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.
Long-lasting filter

The HEPA H13-grade filter lasts up to 11 years.⁹ Remove and dispose in one click.
Control via the app

Monitor what’s been captured, set schedules, browse reports, and more with the MyDyson™ app.¹⁰

Discover the pioneering technology inside

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.

Cutaway of the Dyson Purifier Big+Quiet Formaldehyde using blue lines to show airflow inside and outside the machine.

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.

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

Cutaway of the Dyson Purifier Big+Quiet Formaldehyde's screen.

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

The three layers of filtration inside the Dyson Purifier Big+Quiet Formaldehyde.

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

Close-up of the K-carbon filter with an extreme close-up on the filter material.

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.

Cutaway of the Dyson Purifier Big+Quiet Formaldehyde using blue lines to show airflow inside and outside the machine.

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.

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

Cutaway of the Dyson Purifier Big+Quiet Formaldehyde's screen.

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

The three layers of filtration inside the Dyson Purifier Big+Quiet Formaldehyde.

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

Close-up of the K-carbon filter with an extreme close-up on the filter material.

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.

Cutaway of the Dyson Purifier Big+Quiet Formaldehyde using blue lines to show airflow inside and outside the machine.

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

Which is the best air purifier?

Which is the best air purifier?

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 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.

Are bigger purifiers better?

Are bigger purifiers better?

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.

What is the Dyson Big+Quiet Formaldehyde air purifier range designed to do?

What is the Dyson Big+Quiet Formaldehyde air purifier range designed to do?

The Dyson Purifier Big+Quiet Formaldehyde air purifier range is engineered to remove 99.97% of ultrafine particles², such as dust, allergens, odours, gases³ like benzene and nitrogen dioxide and even formaldehyde gas.⁵

How long do the filters in the Dyson Big+Quiet Formaldehyde last?

How long do the filters in the Dyson Big+Quiet Formaldehyde last?

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. 

Where should I position the Dyson Purifier Big+Quiet Formaldehyde in my room?

Where should I position the Dyson Purifier Big+Quiet Formaldehyde in my room?

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. 

How easy is the Dyson Purifier Big+Quiet Formaldehyde to move?

How easy is the Dyson Purifier Big+Quiet Formaldehyde to move?

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.

Allergens

An allergen is a substance that can cause an allergic reaction by triggering the body’s immune system. Common indoor allergens include dust mite droppings, pet dander, mold, and pollen.
Bacteria

Microscopic, single-celled organisms that exist in their millions, in every environment. Not all bacteria are harmful, but some can have adverse effects, such as E. coli.
Benzene

Benzene is colourless, flammable liquid produced by both natural and man-made processes. It’s a natural part of crude oil, gasoline, and cigarette smoke. Indoors, it comes from products such as glues, paints, furniture wax, and detergents.
Carbon dioxide (CO₂)

A colourless greenhouse gas, which comes from the extraction and burning of fossil fuels. Increased CO₂ levels can impact cognitive function.
Formaldehyde

This colourless, flammable gas is used in some building materials and household products. Sources can include some fabrics found in flooring and furniture, glues, paints, varnishes, air fresheners, and household cleaners.
H1N1 virus

This subtype of Influenza A virus, also known as swine flu, caused a global flu outbreak. H1N1 produces respiratory infectious diseases in humans and pigs. Symptoms can be similar to seasonal flu.
HEPA 13

HEPA (High Efficiency Particulate Air) is an air filter efficiency standard and a measure of a filter’s performance. To achieve this standard, filters must meet a minimum of 99.97% particle removal at the most penetrating particle size.
Humidification

A process of increasing air moisture content through the addition of water vapour or steam. Humidifiers can add moisture to the air in dry conditions, creating a more comfortable indoor environment when needed.
Microns

Airborne particles are usually described in microns.  One micron is equal to one-millionth of a metre. The human eye can see debris and dust that are approximately 25 microns in size.
Nitrogen dioxide (NO₂)

Nitrogen dioxide is a liquid below 21.2 °C and a gas at higher temperatures. It is toxic to humans in both states. Gas stoves and space heaters are the most common indoor sources of NO₂  emissions. Other sources include improperly vented furnaces and water heaters.
Pet dander

Pet dander is made up of tiny particles of skin, saliva and urine, shed by animals with fur or feathers. Pet dander lingers in the air before settling on surfaces such as furniture, bedding, and fabrics. Exposure to these airborne particles can trigger allergies.
Particulate matter (PM)

Particulate matter contains microscopic solids or liquid droplets, measured in microns. Indoor PM can be generated through many day-to-day activities such as cooking, cleaning, and the burning of candles and fires.
Purification

The process of making something free of any contaminants or physical impurities. Air purification is designed to filter the air in your home – removing pollutants such as dust, allergens and viruses.
Volatile organic compounds (VOCs)

Volatile organic compounds are potentially harmful gases found in many household products. Common sources include paints, varnishes, air fresheners, cosmetics, and cleaning products.
Pollen

Pollen is a powdery substance released from seed plants as part of their reproduction process. It typically appears from trees in the spring, grasses in the summer, and weeds in the autumn. Pollen grains are among the most common allergens.
House dust mites

Dust mites are tiny insects that commonly live in household dust. They are one of the biggest causes of allergies. Each gram of house dust contains approximately 1000 dust mites.
Aspergillus mold

A common name for a visible group of fungi, mould thrives wherever there is dampness – sending out millions of spores into the air. Exposure to mould occurs via inhalation, skin contact, or ingestion.

¹ Purifying a large room up to 100m² proven with computational fluid dynamics (CFD) modeling with purifier placed in a corner of the room, running at maximum flow and horizontal projection. Projection distance measured from internal flow reach testing. Actual performance in real life conditions may vary.

² Tested to IEST RP-CC001.

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).

⁵ 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.

⁶ 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® wireless technology 4.0 support. The Bluetooth® word mark and logos are registered trade marks owned by the Bluetooth SIG, Inc. and any use of such marks by Dyson is under license. Apple, the Apple logo and Siri are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of the Apple Inc., registered in the U.S. and other countries. Google Play, the Google Play logo, Google Assistant are trademarks of Google Inc.

⁷ Refer to the MyDyson™ app for compatible voice services.

⁸ Particle challenge with DEHS oil specified in EN1822 within a chamber specified in ASTM F3150. Tested in Max mode for whole-machine efficiency above 99.95%.

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