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Dyson Purifier Big+Quiet Formaldehyde BP04 (Prussian Blue/Gold)
Projects air over 32 feet to purify a large space.¹ Quietly.
Detects and destroys formaldehyde, permanently.⁴ Removes gases and odours.²
Only at Dyson: exclusive K-Carbon filter technology captures 3x more NO₂ ³, and CO₂ sensor reports CO₂ levels in real-time.
3 accessories included
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Remote control
Curved and magnetized to store neatly on the machine.
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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.
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HEPA filter
Genuine Dyson HEPA Filter lifespan is 05 years.
Dyson Purifier Big+Quiet Formaldehyde BP03 (Bright Nickel/Prussian Blue)
Projects air over 32 feet to purify a large space.¹ Quietly.
Detects and destroys formaldehyde, permanently.⁴
Remove gases and odours.²
3 accessories included
See all-
Remote control
Curved and magnetized to store neatly on the machine.
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Activated carbon filter
Captures NO₂. Genuine Dyson Activated Carbon Filter lifespan is every 2 years or when alerted by the MyDyson™ app.
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HEPA filter
Genuine Dyson HEPA Filter lifespan is 05 years.
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Pollution isn't just outdoors. It has indoor sources all around the home too.
Often an invisible problem, pollution can build up in the home through indoor activities and household products.
Pollution isn't just outdoors. It has indoor sources all around the home too.
Often an invisible problem, pollution can build up in the home through indoor activities and household products.
VOCs from aerosols and cleaning products
Some household products such as disinfectants and aerosols can release harmful gases into the air. These are known as volatile organic compounds (VOCs).
VOCs from aerosols and cleaning products
Some household products such as disinfectants and aerosols can release harmful gases into the air. These are known as volatile organic compounds (VOCs).
Fumes from paints and glues
The emission of formaldehyde, a colourless gas, can persist for years. Released by some furniture, paint, and fabrics. Concentrations can increase during interior decoration projects.
Fumes from paints and glues
The emission of formaldehyde, a colourless gas, can persist for years. Released by some furniture, paint, and fabrics. Concentrations can increase during interior decoration projects.
Odours and fumes from cooking
Emissions released from cooking can vary based on the temperature, method, and ingredients. Even after cooking, odours and potentially harmful pollutants can hang around in the air.
Odours and fumes from cooking
Emissions released from cooking can vary based on the temperature, method, and ingredients. Even after cooking, odours and potentially harmful pollutants can hang around in the air.
Pet odours and dander
Pets can bring unwanted odours into the home. Additionally, as pets move around the home, their dander lingers in the air before settling on surfaces.
Pet odours and dander
Pets can bring unwanted odours into the home. Additionally, as pets move around the home, their dander lingers in the air before settling on surfaces.
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Advanced 360° filtration system
Three phases of purification sit within a machine, fully-sealed to HEPA H13 grade.⁵ Capturing 99.97% of articles as small as 0.3 microns. Removing gases and odours. Destroys formaldehyde.⁴
Advanced 360° filtration system
Three phases of purification sit within a machine, fully-sealed to HEPA H13 grade.⁵ Capturing 99.97% of articles as small as 0.3 microns. Removing gases and odours. Destroys formaldehyde.⁴
360° HEPA filter
Our re-engineered HEPA filter is 3.8 times larger than its predecessor and captures 99.97% of particles as small as 0.3 microns from the air.
360° HEPA filter
Our re-engineered HEPA filter is 3.8 times larger than its predecessor and captures 99.97% of particles as small as 0.3 microns from the air.
Exclusive K-Carbon filter on select models
A layer of carbon captures gases such as benzene and NO₂ from your environment.² Now engineered to capture three times more NO₂ than our standard activated carbon filter.
Exclusive K-Carbon filter on select models
A layer of carbon captures gases such as benzene and NO₂ from your environment.² Now engineered to capture three times more NO₂ than our standard activated carbon filter.
Selective Catalytic Oxidization Filter
Our SCO filter traps formaldehyde in catalytic tunnels, continuously breaking it down into CO₂ and water.⁴ It never needs replacing.
Selective Catalytic Oxidization Filter
Our SCO filter traps formaldehyde in catalytic tunnels, continuously breaking it down into CO₂ and water.⁴ It never needs replacing.
Frequently asked questions
While our current generation purifiers circulate clean air around the whole room¹⁰, the Dyson Purifier Big+Quiet projects air over 32 feet, creating the circulation power to purify large spaces.¹ Featuring our largest ever filtration system, the purifier captures 99.97% pollutants as small as 0.3 microns, gases² and destroys formaldehyde.⁴ It’s acoustically engineered to operate quietly – even at its highest power setting.
We've tested the Dyson Purifier Big+Quiet extensively – to ensure the sensors, filtration system and motor work together to purify a large living space.
We’ve re-engineered our purifiers to deliver three key features to purify a whole room evenly.¹ Long range projection creates the circulation power to draw even-distant pollutants back to the purifier. An integrated sensor system accurately detects and reports pollutants. Finally, an advanced HEPA H13 grade filtration system captures gases² and 99.97% of ultra-fine particles as small as 0.3 microns, destroying formaldehyde.⁴ Purified air is then projected back into the room and the cycle repeats.
Formaldehyde is a colourless and potentially harmful gas that can be found in many household products and emitted for years. 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 Purifier Big+Quiet Formaldehyde range traps formaldehyde in tunnels, breaking it down into water and CO2.⁵ This is done by a lifetime Selective Catalytic Oxidation filter which does not need replacing.
Dyson purifiers are optimal when left switched on in auto-mode. This allows the purifier to constantly monitor your air quality, and automatically sense and capture pollutants. It adjusts the airflow speed, only purifying when needed.10 The Dyson Purifier Big+Quiet range offers enhanced energy efficiency, providing nearly double the clean air delivery rate per watt versus our current generation purifiers.¹¹
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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.
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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.
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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.
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Carbon dioxide (CO₂)
A colourless greenhouse gas, which comes from the extraction and burning of fossil fuels. Increased CO₂ levels can impact cognitive function.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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¹Testing for PM2.5 purification completed in a large testing chamber following relevant Dyson testing methods. Results may vary in practice.
²Tested to JEM 1467 (acetic acid, acetaldehyde, ammonia), GB/T18801 (formaldehyde, benzene) and DTM-003282 (NO2). Gas capture rates vary.
³Compared to adsorption by the standard carbon filter in Dyson Purifier Big+Quiet Formaldehyde (BP03).
⁴Third 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.
⁵Particle 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%.
⁶Tested on Korean BBQ, grilled salmon, cat urine, tobacco smoke and garbage odours.
⁷App 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.
⁸Levels defined by Dyson based on scientific literature. Ventilation alert when CO2 levels are 1500ppm or above.
9In maximum setting. Tested for air projection (DTM 801) and purification coverage in a 81m3 room (TM-003711).
10In Auto mode.
11Vs. TP09
12Refer to the MyDyson™ app for compatible smart home devices and voice services.
13Primary airflow achieved at projection angle of 50°
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