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Direct Exclusive

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

Direct Exclusive

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

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

Projects air over 10m. Quietly1. Purifies up to 1,000 ft² spaces.2

Captures bacteria3, viruses4 & allergens and 99.95% of ultrafine particles.5

Exclusive K-Carbon filter removes gases and odours.6 Captures 3x more NO2. 17 HEPA H13 filter lasts for 5 years8.

Detects and destroys formaldehyde, permanently.7
Senses and reports CO2 levels in real-time.


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  • Dyson Purifier Big+Quiet Formaldehyde in a large space.

    Long-range projection over 10m 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 up to 1,000 ft².2

  • Dyson Purifier Big+Quiet Formaldehyde in a living space.

    Quiet, even at full power

    An acoustically engineered motor bucket records just 56dBA of sound power at full-speed. With no compromise14 on performance.

  • The Dyson Purifier Big+Quiet Formaldehyde's airflow.

    Adjust your airflow

    Adjust the angle of airflow at 0°, 25° or 50°, or mimic the feeling of refreshing air indoors using Breeze mode.

  • The MyDyson app being used at a café.

    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.11

  • Zoomed-in to show LCD screen on the Dyson Purifier Big+Quiet Formaldehyde.

    Auto mode

    With the Auto mode feature, your purifier can sense, capture and report on pollutants in your home in real-time. This saves energy – meaning it only purifies when needed.11

  • A person opening the Dyson Purifier Big+Quiet Formaldehyde to access the filter.

    Long lifetime filters

    HEPA H13 filter lasts for 5 years8; K-Carbon filter lasts for 2 years8; While catalytic filter lasts for a lifetime & never needs replacing.

  • Zoomed-in to show discreet wheels on Dyson Purifier Big+Quiet Formaldehyde.

    Discreet wheels

    Easily manoeuvre your machine across a room. Designed for hard surfaces, the wheels are completely hidden from view.

  • Logos of compatible smart home devices.

    Smart home purification

    Connect and then control your air quality, hands-free, with compatible smart home voice services.16


  • Molecular representation of NO₂.

    Adsorbs 3x more NO2

    Our K-Carbon filter is impregnated with potassium carbonate (K2CO3) and can adsorbs three times more nitrogen dioxide17 - one of the most common indoor pollutants, produced by gas appliances, open flames, and wood burning stoves.

  • MyDyson app working with the Dyson Purifier Big+Quiet Formaldehyde.

    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 volumes12, alerting you on the MyDyson™ app or LCD screen when to ventilate by opening a door or window.

  • Zoomed-in look at the sensor technology on the Dyson Purifier Big+Quiet Formaldehyde.

    Senses and reports, automatically

    A suite of 5 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.

  • Molecular view of Dyson's solid-state formaldehyde sensor.

    Destroys formaldehyde, permanently7

    A catalytic filter continuously traps and breaks down formaldehyde molecules into water and CO27. And it never needs replacing.

  • Gases and ultrafine particles flowing through filtration.

    Captures gases and ultrafine particles5

    The HEPA H13 grade filter captures 99.95% of ultrafine particles as small as 0.1 microns5, while a K-Carbon filter removes odours and gases.6

  • Dyson Purifier Big+Quiet Formaldehyde's internal technology.

    Fully-sealed to HEPA H13 grade9

    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.9

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 CO2.7

Our Direct exclusive model comes in a new Prussian blue and gold colour. It has a K-Carbon filter that adsorbs 3x more NO217 – a common indoor pollutant. And a new integrated sensor that detects and reports CO2 levels, notifying you when they exceed recommended limits.​9

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 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 are not visible when the product is upright. These wheels are designed for hard floors – so you can move your purifier around easily.

User guide

Check your user guide online, or download a copy.


MyDyson logo

Expert guides on the MyDyson™ app

From quick-start and how-to guides to understanding different modes and screens. All tailored to you and your machines.

Phone screen showing video on how to get started with a new purifier.


  • Height 830mm
  • Length 434mm
  • Width 415mm
  • Weight 11.9kg
  • HEPA filter Glass fiber HEPA filter
  • Warranty 2-year warranty

Choose your model

Direct Exclusive
  • Projects air over 10m. Quietly.1 Purifies up to 1000 ft² spaces.2
  • Detects and destroys formaldehyde, permanently.7
  • Exclusive K-Carbon filter - captures 3x more NO2.17
  • Exclusive CO2 sensor - notifies you when CO2 levels exceed recommended volumes.9
  • HEPA H13 filter lasts for 5 years.8
  • Connects to the MyDyson™ app.
Latest Technology
  • Projects air over 10m. Quietly.1Purifies up to 1,000 ft2 spaces.2
  • Captures bacteria3, viruses4 & allergens and 99.95% of ultrafine particles.5
  • Removes gases and odours.6
  • Detects and destroys formaldehyde, permanently.7
  • HEPA H13 filter lasts for 5 years.8
  • Connects to the MyDyson™ app.

Our quietest most
powerful purifier


156dBA at max speed.
2The ability of purifying a large room up to 100m2 (10m*10m) proven from a Computational Fluid Dynamics (CFD) modelling, with the purifier placed in a corner of the room running at the maximum flow and horizontal projection reaching over 10 metres to fully mix the room. The projection distance was measured from internal flow reach testing under the maximum directional airflow. The actual performance in real life condition may vary.
3Tested by 3rd party SGS, refer to GB 21551.3-2010 but tested against Staphylococcus albus, Staphylococcus aureus and Escherichia coli in a 30m³ chamber with machine speed 10 and airflow projection at 50° The actual result may vary in practice.
4Tested by 3rd party SGS, refer to GB/T 18801-2022 but tested against H1N1 virus & human coronavirus (229E & OC43) in a 30m³ chamber with machine speed 10 and airflow projection at 50° The actual result may vary in practice.
5Tested for filtration efficiency at 0.1 microns (EN1822, ISO29364).
6Tested to JEM 1467 (acetic acid, acetaldehyde, ammonia), GB/T18801 (formaldehyde, benzene) and DTM-003282 (NO2). Gas capture rates vary.
7Third 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.
8Filter life is determined by dividing total dust load capacity by annual dust load. Annual dust load was calculated using GB/T 18801 daily mass formula. Results may vary in practice.
9Particle 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%.
10Tested on Korean BBQ, grilled salmon, cat urine, tobacco smoke and garbage odours.
11App 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.
12Levels defined by Dyson based on scientific literature. Ventilation alert when CO2 levels are 1500ppm or above.
13In maximum setting. Tested for air projection (DTM 801) and purification coverage in a 81m3 room (TM-003711).
14In Auto mode.
15Vs. TP09.
16Refer to the MyDyson™ app for compatible smart home devices and voice services.
17Compared to adsorption by the standard carbon filter in Dyson Purifier Big+Quiet Formaldehyde (BP03).