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See how a high CADR purifier releases pollutants back into the room.

PLAY

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What is a CADR rating?

The Clean Air Delivery Rate (CADR) test measures how fast the number of particles in the air are reduced. But it doesn't measure filtration quality, or focus on how well a purifier captures differing particle sizes.

In real homes, filtration quality matters. If particles aren’t captured first time, they are released back into the room.

Unlike real homes, the CADR test is conducted for 20 minutes in a small test chamber measuring 11.8m². Fans on the ceiling and wall help to circulate the air.

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Dyson purifiers focus on filtration quality.

Our air purification technology captures 99.95% of allergens, pollutants and ultrafine particles.¹

 

  • CADR tests for:

    Particles:
    Dust, pollen and tobacco smoke

  • Dyson purifiers are tested to remove:

    Particles:
    Dust, pollen, tobacco smoke, pet allergens, dust mite allergens, 2.5 microns, 0.1 microns.

    Gases:
    Tobacco smoke, Formaldehyde, Benzene, Ammonia, Acetaldehyde, Acetic acid, Ozone, Nitrogen dioxide, Toluene, Trichloroethylene, Naphthalene.

Ultrafine particles are suspended in the air we breathe.

Filtration quality is crucial. Particles at 2.5 microns measure just 1/30th the size of a human hair. Ultrafine particles at 0.1 microns fit 1,000 times across the diameter of a human hair. Dyson purifiers capture 99.95% of particles as small as PM 0.1.¹

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Our rigorous test methods.

Designed to enhance performance in real home environments.

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    Full grid test
    Measures air flow, velocity and direction from the purifier. Good circulation helps prevent dirty air from lingering in some areas of the room.

     

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    Dyson HEPA filtration efficiency test
    Some purifiers release dirty air back into the room. We test our HEPA filters to capture 99.95% of particles as small as PM 0.1.¹

     

     

     

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    Gaseous pollutant test
    Potentially harmful gases can be emitted from cookers, new furniture, naked flames and cleaning products. We test that our purifiers capture these gases.

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    Acoustics test
    We invest in sound power and sound quality analysis, to develop night-mode settings that enable air purification without disturbing you.

“Dyson has been filtering air for more than 25 years. Our engineers ensure our machines capture more potentially harmful ultrafine particles and gases in real homes, than conventional lab testing.”

James Dyson
Engineer

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Advanced vacuum-sealed HEPA filter.

360° Glass HEPA filter.

Removes 99.95% of pollutants and allergens from the air¹. Unlike some others, it is vacuum-sealed so air goes through it, not around it.

Automatically detects and removes indoor pollution.

In auto-mode, Dyson purifiers constantly monitor and react to indoor air quality while reporting directly to the Dyson Link app.²

See the app

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Projects purified air throughout the room.

Only Dyson purifiers use Air Multiplier™ technology to project air.

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Purification all year round. Purifying fan or heater when you need it.

See Features

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Choose your model

Dyson Pure Hot+Cool™

Limited stock

Dyson Pure Hot+Cool™ White/Silver

Purifies, heats and cools you. Automatically senses and displays real-time air quality. Connects to Dyson Link app. For larger spaces.

4.2 stars out of 5 from 742 Reviews
Colour:  White / Silver
Options
1 accessory included
See all Hide Click to learn more
Remote control

Curved and magnetised to store neatly on the machine

Out of stock.
    £549.00

    Apply at check out for monthly instalments**.

    See a representative example.
    Learn more

    Dyson Pure Cool™ Tower

    Limited stock

    Dyson Pure Cool™ tower White/Silver

    Automatically purifies a whole room and cools you. Senses and displays real-time air quality. Connects to Dyson Link app. For larger spaces.

    4.0 stars out of 5 from 379 Reviews
    1 accessories included
    See all Hide Click to learn more
    Remote control

    Curved and magnetised to store neatly on the machine

      £449.99

      Apply at check out for monthly instalments**.

      See a representative example.
      Learn more

      Dyson Pure Cool™ desk White/Silver

      Automatically purifies a whole room and cools you. Senses and displays real-time air quality. Connects to Dyson Link app. For smaller spaces.

      4.2 stars out of 5 from 249 Reviews

      2 accessories included

      See all Hide Click to learn more
      • Power supply
      • Remote Control

        Curved and magnetised to store neatly on the machine.

      Out of stock.
        £399.99

        Apply at check out for monthly instalments**.

        See a representative example.
        Learn more

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        Direct from Dyson

        ¹Particles as small as 0.1 microns. Tested to EN1822. Gaseous capture rates vary.

        ²Requires Wi-Fi and an app-enabled device.

        Contact us

        You can quickly access help and advice online – visit our support pages for troubleshooting, how-to videos and more.