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Dyson Purifier Cool Autoreact™

Automatic air purifier that purifies the whole room1 to help protect against allergies, bacteria and pet dander for a cleaner, healthier home.

Sealed to HEPA H13 standard – what goes inside, stays inside.2

Removes 99.95% of ultrafine particles3

Diffused mode diverts airflow to purify you without the effect of cooling.

Dyson Purifier Cool Autoreact

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Poor air quality isn't just a problem outside. It's a problem inside too.

From plant pollen and cooking fumes, to VOCs and benzene found in sprays and candles, our homes can trap pollutants in the air. That's why Dyson purifiers automatically sense and remove them.

Pollutant sources in a living space

Common household pollutants

  • Benzene molecule

    Traffic, building materials and furniture

    Benzene and VOCs

  • Nitrogen dioxide molecule

    Road traffic, tobacco and fuel-burning heaters

    Nitrogen dioxide

  • Gas molecules

    Fumes and cooking


  • Pollen

    Pollen and allergens


  • Bacteria



  • PM2.5 particles

    Industrial emissions


  • PM0.1 particles

    Ultrafine particles


Captures and removes pollutants with HEPA air filtration

HEPA filter captures 99.95% of particles as small as 0.1microns.3 Many of the pollutants that can harm us aren’t visible and can evade detection. A HEPA air filter can capture and destroy tiny particles and allergens, improving the air quality standards of indoor spaces. Inclusion of a HEPA filter benefits the health of every inhabitant. The second, activated carbon filter absorbs gases, odours and VOCs for effective air treatment.

Graphic of Dyson filtration system

The Dyson Purifier Cool Autoreact™ is sealed to meet HEPA standard2

To prevent pollutants leaking back into the air, it’s not just the filter that’s sealed to HEPA H13 standard, it’s the whole purifier.2 So what goes inside, stays inside.

Graphic showing fully sealed purifier

Powerful circulation to purify the whole room1

Only Dyson purifiers have Air Multiplier™ technology, to draw in distant pollutants and project purified air throughout the room.1

Aerial view of family room with Dyson purifier in action

The Dyson Purifier Cool Autoreact™ is tested beyond the industry standard

We test our purifiers in a room size of 81m³, with nine sensors that continuously measure air quality. Some other manufacturers use a small 28.5m³ chamber, with only one sensor and a fan to boost circulation.

Dyson purifier inside Dyson test chamber with nine sensors

We test beyond the industry standard. For real living spaces.

Dyson engineers designed the POLAR test to challenge the industry test standard – measuring filtration, sensing and circulation to ensure the whole room is purified properly.

  • Graphic comparison of CADR test v Dyson test

    CADR is not a measure of purification performance in a real-size room 28.5m³

    Two additional fans boost circulation. Only one sensor measures air quality.

  • Graphic comparison of CADR test v Dyson test

    Dyson's POLAR test goes further to measure purification throughout a real-size room 81m³

    No additional fans. Nine different sensors to measure even-room air quality.

Senses and reports, for automatic air purification

Three sensors constantly analyse your air, while our unique algorithm cross-checks data every second. To precisely monitor, display and react to your air quality.

Internal sensing technology and LCD screen showing air quality

Additional features

  • Image showing powerful, cooling airflow

    Cools you in summer

    In warmer weather, a powerful stream of purified airflow can cool you down.

  • Purified air exiting the back of the purifier

    Diffused mode. Purifies without the effect of cooling

    Airflow is diverted through the back of the machine, maintaining effective purification.

  • Dyson purifier in a dark bedroom with someone sleeping peacefully

    Night mode for peaceful sleeping

    For lighter sleepers, it monitors and purifies using the quietest settings along with a dimmed display.

  • Dyson purifier in a bedroom

    20% quieter

    Acoustically engineered to reduce turbulence, so it's 20% quieter than the previous model.

  • Someone changing their filter

    Easy filter care

    Your HEPA+Carbon filter is easy to change and the LCD screen will alert you when it's time.

Frequently asked questions

There are many innovative features that work collectively tomake the Dyson Purifier Cool Autoreact an ideal air treatment solution for your home. One of many key features is its dynamic ability to sense and react to the world around you. This automatic air purifer is able to analyse air quality by running it through a unique algorithm of data to monitor and adapt to the needs of your surroundings.

We recommend replacing the HEPA+Carbon filter every 12 months. That's because over time, filters can get clogged with pollutants, and even let unpleasant odours back into the room. The machine will alert you when it’s time to change filters. A filter life reading can be found on the LCD screen.

HEPA filtration refers to filter quality and efficiency. Filters that meet HEPA (High Efficiency Particulate Air) standard can capture 99.95% of particles down to 0.1 microns3. This means that particle pollutants like bacteria, dust mites and allergens can be captured and destroyed, improving the health quality of homes.

Explore the full range of Dyson Air Treatment, and high-performance purifier filters.

Replacement filters, engineered for your machine

We recommend replacing your HEPA and carbon filter when your machine alerts you – so it continues to run effectively.

Carbon and HEPA filter

Owner support

  • Register your machine

  • Find the right part

  • Find a replacement filter

  • Expert support

1Tested for filtration efficiency at 0.1 microns (EN1822, ISO29463)

2In maximum setting. Tested for air projection, purification coverage in a 81m3 room.

3 Particle 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%.

4 Gas capture rates may vary.