The Dyson Big+Quiet Formaldehyde BP03 air purifier repels a jet of smoke in a lab test.

Air treatment

Shop our full range of air purifiers and powerful fans.

Learn how a Dyson removes formaldehyde permanently.

Automatic sensing. Fully-sealed machine. Long-range air projection. Find out how Dyson's latest purifier with upgraded filtration sets a new standard in effectively tackles formaldehyde and air purification. That's why they're at the core of our technology. And why we've been testing them for generations.

A graphic showing a Dyson air purifier reducing pollutants in a room’s air.
  • A Dyson air purifier in a living room.

    Advanced automatic sensing

    Reacts automatically to remove pollutants, only using energy when needed.1

  • A Dyson air purifier being tested to HEPA H13 standard.

    Fully sealed filtration to HEPA H13 standard

    Advanced whole-machine fully sealed filtration with HEPA H13, activated carbon and SCO filters. So the pollution captured inside, stays inside.1

  • A Dyson air purifier projecting powerful airflow in a large room.

    Powerful long-range air projection3

    Air Multiplier™ technology projects up to 290 litres of air per second to circulate purified air and heat across the whole room.3

Discover the pioneering technology inside a Dyson air purifier

Senses and reports, automatically

Integrated sensors analyse and diagnose airborne pollutants in real time, displaying results on the LCD screen.

A cutaway of a Dyson purifier showing the integrated sensors and LCD screen.

Caputures gases and ultrafine particles

The HEPA H13 filter captures 99.95% of particles as small as 0.1 microns, while a layer of activated carbon removes odours and gases including VOCs.3

A cutaway of a Dyson purifier’s HEPA H13 filter capturing particles.

Fully sealed filtration

Two phases of purification sit within our fully-sealed filtration system to trap pollutants inside, removing them from the air you breathe. So what goes inside, stays inside.3

A Dyson purifier’s filtration system traps pollutants within the machine.

Frequently asked questions

Yes. Our activated carbon filters capture and trap pollutants that cause odour in indoors environments.

HEPA stands for High-Efficiency Particulate Air. This filter can trap particles – as small as 0.1 microns. All Dyson purifiers have HEPA filters to capture 99.95% of allergens and pollutants.

Dyson Purifiers cool with purified air. They project a powerful airflow to cool like most Dyson fans, but they also capture dust and allergens, removing 99.95% of particles as small as 0.1 microns

Yes, air purifiers with HEPA filters, when used correctly, can limit exposure to haze within the home. Haze brings both coarse and fine, and larger and smaller particles into the home, which can lead to adverse health effects if not monitored.

Standing for ‘High Efficiency Particulate Air’, HEPA filters are a standard of filter efficiency which can help capture and purify haze particles. Within a HEPA filtration system, large and small particles of all textures are effectively trapped. Alongside HEPA filtration, Dyson air purifiers are whole machine sealed to ensure what enters the system, stays in.

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Owner support

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  • Find a replacement filter


  • Expert support

1 In Auto mode.
2 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%. Gas capture rates vary.
3 In maximum setting. Tested for air projection (DTM801) and purification coverage in a 81m3 room (TM-003771).

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