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In the box

Dyson Purifier Big + Quiet Formaldehyde BP03

  • Carbon filter

  • HEPA filter

  • Remote control

Dyson Purifier Big + Quiet Formaldehyde BP03

Overall rating

79% of reviewers would recommend to a friend.

A Must Have!


My husband and I have allergies, using a purifier fully sealed with HEPA filter, really makes us feel better. We love that it creates more indoor air circulation. Living in the west coast where some years affected by wildfire smoke, having a good purifier added a second layer of filtration aside from the house HVAC system.

  • Weight

    11.9 kg

  • Height

    830 mm

  • Length

    434 mm

  • Width

    415 mm

Frequently asked questions

Which is the best air purifier?

The Dyson Purifier Big+Quiet Formaldehyde is our quietest, and most powerful air purifier. Using cone aerodynamics to deliver powerful, long-range air projection – circulating purified air and driving even distant pollutants back through sealed filters. For whole-room purification – capturing 99.95% of ultrafine particles², even in large spaces.¹ You can control your air quality, wherever you are. At the touch of a button you can monitor the air quality levels in your home using the MyDyson™ app⁵ – viewing in real-time the benefits of owning an air purifier.

Are bigger purifiers better?

Not all purifiers are equal. Getting the right size purifier, with the best projection is essential to ensure it will effectively purify the air in your space. We've tested the Dyson Purifier Big+Quiet  Formaldehyde extensively – to ensure the sensors, filtration system and motor work together to purify a large living space. It has the projection power to purify spaces up to 100m². The Dyson Purifier Big+Quiet Formaldehyde also has our largest ever filtration system – and the 360° HEPA H13-grade filter doesn’t need replacing for up to 5 years.

What is the Dyson Big+Quiet Formaldehyde air purifier range designed to do?

The Dyson Purifier Big+Quiet Formaldehyde air purifier range is engineered to remove 99.95% of ultrafine particles², such as dust, allergens, odours, gases³ like benzene and nitrogen dioxide and even formaldehyde gas.⁴

How long do the filters in the Dyson Big+Quiet Formaldehyde last?

The Dyson Purifier Big+Quiet Formaldehyde has our most advanced filtration system. We recommend replacing the 360° HEPA H13-grade filter after using it for up to five years or sooner. The Activated carbon filter should be replaced every two years, or sooner if required. The Selective Catalytic Oxidisation (SCO) filter is permanent and never needs replacing. 

Where should I position the Dyson Purifier Big+Quiet Formaldehyde in my room?

The Dyson Purifier Big+Quiet Formaldehyde has been designed to work from the corner of a room, at least one metre away from the wall. For optimal performance we recommend projecting air either along a wall or across the room. You can adjust the angle of projection to suit your preference.

How easy is the Dyson Purifier Big+Quiet Formaldehyde to move?

The Dyson Purifier Big+Quiet Formaldehyde has discreet wheels, which aren’t visible when the machine is upright. These wheels are designed for hard floors – so you can move your purifier around easily.