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Dyson Purifier Hot+Cool Autoreact logo
Dyson Purifier Hot+Cool Autoreact

Captures dust, allergens and viruses¹

Removes 99.95% of ultrafine particles²

Purifies and heats the whole room³

Fully sealed to HEPA H13 standard⁴

Pioneering Dyson technology

Our latest purifier was engineered to deal with pollution, using multiple advanced technologies.

Pioneering Dyson technology

Our latest purifier was engineered to deal with pollution, using multiple advanced technologies.

Air valve motor

The valve mechanism is driven by a brushless stepper motor, to allow remote actuation and switching between Diffused and Fan mode.

PTC plates

Air circulates between the plates and external casing, to heat the air as it leaves the machine.

Air Multiplier™ technology

Projects a long-range stream of smooth air. No need for blades

Real-time LCD screen

LCD screen reports indoor air quality in real time. The laser-etched display window is made from a single piece of impact-resistant polycarbonate shell.

Gas and particulate sensors

Measures and detects particles and volatile organic compounds in the air.

360 HEPA H13 filter

9 metres of borosilicate microfibres, pleated over 200 times, captures 99.95% of pollutants as small as 0.1 microns.²

Activated carbon filter

A layer of carbon captures gases⁵ such as benzene and NO₂

Dyson Pure Hot+Cool™ purifier fan heater on surface in kitchen

Powerful circulation to purify the whole room

Only Dyson purifiers have Air Multiplier™ technology, to draw in distant pollutants and project purified air throughout the room.²

Dyson purifier inside Dyson test chamber with nine sensors

Dyson purifiers are 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.

  • Industry-standard test chamber – only 28.5m³

    CADR test chamber
  • Dyson POLAR test chamber – 81m³

    Polar test chamber

Pollutant sources in a living space

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.

Common household pollutants

  • Household fumes and cooking


  • Cleaning products and candles

    Benzene and VOCs

  • Gas stoves and car exhausts

    Nitrogen Dioxide

  • Pollen and allergens


  • Bacteria


  • Industrial emissions and house dust


  • Ultrafine particles



Internal sensing technology and LCD screen showing air quality

Senses and reports, automatically

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.

Graphic of Dyson filtration system

Captures and removes with HEPA filtration

HEPA filter captures 99.95% of particles as small as 0.1 microns.² Activated carbon absorbs gases⁵, odours and VOCs.

Graphic showing fully sealed purifier

Only Dyson’s latest purifiers are fully sealed to HEPA H13⁴

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.⁴ So what goes inside, stays inside.

Heated air filling the family room

Fast, even room heating

Air Multiplier™ technology projects purified, heated air throughout the room.³ Once your target temperature is reached, heating automatically stops.

Additional features

  • Man standing beside window with cooling air filling the room

    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 cooling you.

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

  • 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

What is new about the Dyson Purifier range and how is it different to other purifiers?

Dyson engineers are perfectionists. Channelling our relentless dissatisfaction, we have re-engineered the Dyson Purifier range to be our first purifiers fully sealed to HEPA H13 standard. Capturing 99.95% of ultrafine particles and preventing pollutants from leaking back into the air you breathe.

What is different about the Dyson Purifier Formaldehyde range?

The Dyson Purifier Cool Formaldehyde has all of the capabilities found in our advanced purification products but goes a step further to detect and destroy formaldehyde. An added solid state-sensor precisely detects formaldehyde, while our catalytic filter breaks it down into two safer molecules – carbon dioxide and water.

What is formaldehyde and what are common sources of it?

Formaldehyde is a polluting gas formed of carbon, hydrogen and oxygen that is commonly found in homes. Common sources of formaldehyde in your home could be: paint and varnishes, air fresheners, mattresses, furniture, household cleaners, carpets, particleboard and plywood, electronics, dryer sheets, nail polish remover, moth balls, toys, fireplaces and wood burning stoves.

How often should I replace my filter?

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. The catalytic filter never needs replacing. 

Dyson Filter

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.

Only when you buy at Dyson.com