Add to cart
Only at Dyson

Dyson Purifier Big+Quiet™ Formaldehyde (Satin Dark Blue/Gold)

Only at Dyson

Dyson Purifier Big+Quiet™ Formaldehyde (Satin Dark Blue/Gold)

Add to cart
Zip Pay Logo
Own it now for $61.50 weekly for 6 months Learn More
After Pay Logo
4 payments of $ 399.75 Learn More

Shop Now, Enjoy Now, Pay Later

Pay over four simple installments

Pay every 2 weeks, enjoy your purchase right away

Simply complete your checkout

No long forms, instant approval decision online

At checkout, select Afterpay as payment method

No new cards, use your own existing payment card

All you need to apply is to have a debit or credit card, to be over 18 years of age, and to be a resident of Australia or New Zealand. Late fees and additional eligibility criteria apply. The first payment may be due at the time of purchase. For complete terms visit

Dyson Purifier Big+Quiet™ Formaldehyde (Satin Dark Blue/Gold)
SKU: 455642-01 | RRP: $1,599 | BP04

Purifies large spaces.1 Quietly. Captures allergens and 99.95% of ultrafine particles.2
Removes gases and odours.3 Captures 3x more NO2.4

Detects and destroys formaldehyde, permanently.5
Senses and reports CO2 levels in real-time.

Only at Dyson: Exclusive Satin Dark Blue and Gold edition with additional CO2 sensor and captures 3x more NO2.4

Spend & Save offer: Get a Supersonic Origin for $399 when you add this product to cart.

Watch video


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

    Long-range projection 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.1

  • 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 compromise 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.7

  • 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.8

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

    Hygienic filter replacement

    A hygienic replacement mechanism allows you to dispose of the HEPA filter in one click.

  • 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.10

  • Sensitive Choice Logo

    Sensitive Choice®

    Approved by National Asthma Council Australia


  • Molecular representation of NO₂.

    Adsorbs 3x more NO2– Exclusive to Dyson

    Our K-Carbon filter is impregnated with potassium carbonate (K2CO3) and can adsorbs three times more nitrogen dioxide4 - 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 volumes9, 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 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, permanently5

    A catalytic filter continuously traps and breaks down formaldehyde molecules into water and CO25. And it never needs replacing.

  • Gases and ultrafine particles flowing through filtration.

    Captures gases and ultrafine particles2

    The HEPA H13 grade filter captures 99.95% of ultrafine particles as small as 0.1 microns2, while an activated carbon filter removes odours and gases.3

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

    Whole-machine sealed to HEPA H13 grade6

    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.

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 CO2.5

Our Direct exclusive model comes in a new Prussian blue and gold colour. It has a K-Carbon filter that adsorbs 3x more NO24 – 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. To keep the latest Dyson purifier formaldehyde machine performing optimally, 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 next-generation Dyson formaldehyde air purifier, 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 Dyson air purifier formaldehyde machine around easily.

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.

Care, from the people who made it.


  • Filtration Glass fiber HEPA filter
  • Height 830mm
  • Length 434mm
  • Width 415mm
  • Weight 11.90kg
  • Decibel level 56 dB(A)

Choose your model

Only at Dyson

    Projects air over 10 metres to purify large spaces.1 Quietly.

    Captures allergens and 99.95% of ultrafine particles.2 Removes gases and odours.3

    Even destroys formaldehyde.4

    Control from anywhere with the MyDyson™ app.7

    Only at Dyson: Exclusive Edition with K-Carbon filter capture 3x more NO2.6

    Additional CO2 sensor notifies you when CO2 levels exceed recommended volumes.

    Get a Supersonic Origin for $399 when you add this product to cart.

Installment options with
Add to cart
Latest technology

    Projects air over 10 metres to purify large spaces.1

    Captures allergens and 99.95% of ultrafine particles.2 Removes gases and odours.3

    Even destroys formaldehyde.4

    Control from anywhere with the MyDyson™ app.7

Installment options with

1The 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 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.

2Tested for filtration efficiency at 0.1 microns (EN1822, ISO29364).

3Tested to JEM 1467 (acetic acid, acetaldehyde, ammonia), GB/T18801 (formaldehyde, benzene) and DTM-003282 (NO2). Gas capture rates vary.

4Compared to adsorption by the standard carbon filter in Dyson Purifier Big+Quiet Formaldehyde (BP03).

5Third 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.

6Particle 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%.

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.

8In Auto mode.

9Levels defined by Dyson based on scientific literature. Ventilation alert when CO2 levels are 1500ppm or above.

10Refer to the MyDyson app for compatible smart home devices and voice services.