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Dyson purifier big+quiet formaldehyde logo
Dyson Purifier Big+Quiet Formaldehyde in a large space.

Projects air over 32 feet and purifies large spaces.⁺ Quietly.

Quiet, even at full power.

Captures allergens and 99.97% of fine particles.

Detects and destroys formaldehyde, permanently.¹

  • Dyson purifier big+quiet formaldehyde logo
    Dyson Purifier Big+Quiet Formaldehyde in a large space.

    BP04

    1 model available from $1099.99

    Projects air over 32ft and purifies large spaces.⁺ Quietly.

    • Captures 99.97% of fine particles as small as 0.1 microns. Destroys formaldehyde.¹
    • Control with MyDyson app▴
    • Automatically detects CO₂, airborne particles, gases and formaldehyde.
    • Absorbs 3x more NO₂.⁴ Removes gases and odors.⁶
  • Dyson purifier big+quiet formaldehyde logo
    Dyson Purifier Big+Quiet Formaldehyde in a large space.

    BP03

    1 model available from $999.99

    Projects air over 32ft and purifies large spaces.⁺ Quietly.

    • Captures 99.97% of fine particles as small as 0.1 microns. Destroys formaldehyde.¹
    • Control with MyDyson app▴

Our quietest most powerful purifier

We've engineered our energy efficient system that projects air over 32 feet and purifies large spaces.⁺ Quietly.

Our quietest most powerful purifier

We've engineered our energy efficient system that projects air over 32 feet and purifies large spaces.⁺ Quietly.

Innovative amplifier design

Two high velocity jets of purified air are forced to train around a high pressure core and join to create one powerful condensed jet of purified air.

Motor bucket

Acoustically engineered to operate quietly – even at its highest power settings.

Integrated sensor system

A suite of sensors interacts with a unique algorithm to detect pollutants across a whole room and report automatically.

Advanced filtration system

Three phases of purification sit within a fully-sealed machine.⁶ Capturing 99.97% of fine particles, gases³ and destroying formaldehyde.¹

The Dyson Purifier Big+Quiet Formaldehyde's internal technology.
Dyson Purifier Big+Quiet Formaldehyde's purification range being tested for large spaces.

Engineered to purify large spaces⁺

We've tested our latest purifier thousands of times – to ensure the sensors, filtration system and motor work together to purify large spaces.

Video Transcript

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Dyson Purifier Big+Quiet Formaldehyde technology with LCD screen sensor icons.

Senses and reports on air quality, automatically

A suite of intelligent sensors 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.▴

Dyson's solid-state formaldehyde sensor molecular visualisation.

Destroys formaldehyde, permanently¹

Dyson's solid-state formaldehyde sensor works to detect formaldehyde molecules 500 times smaller than 0.1 microns. Dyson's unique catalytic filter breaks the formaldehyde molecules apart, leaving only tiny amounts of water and CO₂ in the air, destroying the formaldehyde permanently.¹

Dyson Purifier Big+Quiet Formaldehyde positioned in the home.

Quiet, even at full power

Acoustically engineered to operate quietly – even at its highest power setting. So it continually reduces your exposure to pollution, without disturbing you around the home.

Video Transcript

Open video transcript
The Dyson Purifier Big+Quiet Formaldehyde's internal engineering.

Unique motor bucket

We developed a unique motor bucket to deliver the single largest drop in noise levels we have ever achieved. Every harsh edge and surface was stripped back to reduce turbulence, pressure and noise. Consequently we achieved an A weighted sound power level of just 56dB(A) at full power.

The MyDyson app being used at a café.

Complete control of your air quality. From wherever you are.

At the touch of a button, control your purifier from anywhere. Set schedules, monitor air quality levels in your home, track filter life and more with the MyDyson™ app.▴

 

MyDyson logo
Screen examples of the MyDyson app.

Get more from your Dyson with the MyDyson™ app▴

Download the app for the best MyDyson™ experience.

Frequently asked questions

What exclusive technology do I get when I buy the Dyson Big+Quiet Formaldehyde direct from Dyson?

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.​⁶

What’s new about the Dyson Purifier Big+Quiet range?​ 

While our current generation purifiers circulate clean air around the whole room⁺, the Dyson Purifier Big+Quiet projects air over 32 feet, creating the circulation power purifying large spaces.⁺ Featuring our largest ever filtration system, the purifier captures 99.97% pollutants, gases, and destroys formaldehyde.¹  It’s acoustically engineered to operate quietly – even at its highest power setting.

How long does the Dyson Big+Quiet Formaldehyde filter last?​

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. ​

What size room can the Dyson Purifier Big+Quiet Formaldehyde purify?

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. It has the projection power to purify spaces up to 32 feet.

How does the machine purify a whole room?​

We’ve re-engineered our purifiers to deliver three key features to purify a whole room evenly.⁺ 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 gases³ and fine particles, destroying formaldehyde.¹ Purified air is then projected back into the room and the cycle repeats. 

What is formaldehyde?

Formaldehyde is a colorless 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.

Can I leave my Dyson air purifier on all the time?

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.¹¹ 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.¹²

Dyson air treatment machines.

Dyson air treatment

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