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Dyson HEPA Big+Quiet Formaldehyde logo
Dyson HEPA Big+Quiet Formaldehyde.

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Introducing the latest technology for business, Dyson's quietest, most powerful air purifier yet.

Purifies rooms up to 1,000ft², evenly.¹ Engineered for professional environments such as offices, classrooms and hotels.


  • The Dyson HEPA Big+Quiet Formaldehyde.
  • The Dyson HEPA Big+Quiet Formaldehyde
    • Activated carbon filter
    • HEPA filter
A large living space and the sources of various pollutants.

It's our business to understand air pollution, so yours doesn't suffer

Workspaces can harbour pollutants such as viruses, bacteria, Volatile Organic Compounds (VOCs), pollen and formaldehyde. Everyday items such as cleaning products and printers, furniture and flooring, can release potentially harmful microscopic particles, and remain in the air for many years.³

Dyson HEPA Big+Quiet Formaldehyde purifying large living space

Engineered to purify large spaces

Fully-sealed to HEPA H13 standard to capture 99.97% of pollutants as small as 0.3 microns. Purifying rooms up to 1000ft², evenly.¹

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Frequently asked questions

How noisy is the purifier?

Our latest purifier is acoustically engineered to operate quietly – even at its highest power setting. So it reduces your exposure to pollution, without disturbing you at the office or in the classroom. It records just 55dBA of sound power at full speed.

Other purifiers claim “HEPA” standard – why is Dyson special?

In Dyson’s latest purifiers, it’s not just the filter that meets HEPA H13 standard, it’s the whole purifier. So they don’t just capture pollutants, they prevent them from leaking back into the air you breathe. High-pressure seals, combined with Dyson’s fully-sealed filtration system, means our whole purifier meets HEPA H13 standard.² So what goes inside, stays inside.

Why do some competitor machines have a lower dB reading than Dyson purifiers?

Some manufacturers publish dB ratings tested at low fan speeds, which can limit purification performance.

At Dyson we measure and publish sound levels dB(A) at maximum fan speed, where purification is at its optimum.

Why does the new purifier have a CO₂ sensor?

Increased CO₂ levels can impact cognitive function. Our latest purifier senses and reports CO₂ levels and notifies when they exceed recommended levels, alerting on the LCD screen when to ventilate.

Why choose Dyson for business