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Latest technology Dyson purifier Big+Quiet Formaldehyde logo
Dyson purifier Big+Quiet Formaldehyde.
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Dyson purifier Big+Quiet Formaldehyde.

Dyson Purifier Big+Quiet Formaldehyde BP03 (Bright Nickel/Prussian Blue)

Purifies large spaces.¹ Quietly.

Captures allergens and 99.97% of particles as small as 0.3 microns.

Detects and destroys formaldehyde, permanently.⁴

Removes gases and odours.²


Dyson Purifier Big+Quiet Formaldehyde BP03 (Bright Nickel/Prussian Blue)

Overall rating

94% of reviewers would recommend to a friend.

Lives up to its name


I was thrilled to get this unit 10 days ago, as I had a few issues in our home. One room had a worse than musty odor I had tried to get rid of in many different ways without success. Sneezing, stepping out to the main area where our dog spent most of her time, and recent health issues which made me very curious of the airborne chemicals in the house. I moved the unit around to different spaces every couple days to test what it could do. The bad smell from the smelly room all but disappeared. Our allergies diminished, and I was delighted to see that all the chemicals tested, only trace amounts of formaldehyde was present, only in the main room and you can see the unit working to reduce this on the app. I am so happy with this product.

  • Weight

    11.9 kg

  • Cord length

    1.8 m

  • Number of speed settings


  • Total height

    830 mm

  • HEPA filter

    Glass fiber HEPA filter

Dyson Purifier Big+Quiet Formaldehyde BP03
  • Height

    830 mm

  • Length

    434 mm

  • Width

    415 mm

In the box

Dyson Purifier Big+Quiet Formaldehyde BP03 (Bright Nickel/Prussian Blue)

Frequently asked questions

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

Sources of formaldehyde can include woods, glues, paints, varnishes, air fresheners, mattresses, household cleaners, and some fabrics found in household flooring and furniture. The Dyson Formaldehyde air purifier range includes a catalytic filter that traps formaldehyde in tunnels, breaking it down into water and CO₂.⁴

How long does the Dyson Big+Quiet Formaldehyde filter last?​

The Dyson Purifier Big+Quiet Formaldehyde has our largest ever filtration system. We recommend replacing the HEPA 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 oxidiation filter is permanent and never needs replacing. ​

Where should I place 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 are not visible when the product is upright. These wheels are designed for hard floors – so you can move your purifier around easily.