The largest, quietest and most powerful Dyson air purifier — for whole-floor coverage.
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The largest, quietest and most powerful Dyson air purifier — for whole-floor coverage.
Big+Quiet BP04 projects clean air up to 10 m and covers larger spaces using cone aerodynamics. Three layers of filtration including K-Carbon for NO2/SO2 and a catalytic formaldehyde filter.
| Coverage | 100 m³ |
|---|---|
| Projection | 10 m |
| Filter | HEPA H13 + K-Carbon + catalytic |
| Sound | Down to 24 dB |
Yes — every Dyson Purifier Big+Quiet BP04 we ship is a genuine Dyson product covered by the full 2-year manufacturer warranty.
Most orders ship within 24 hours and arrive in 3–7 business days worldwide. Shipping is free, with no minimum order.
Yes. You have 14 days to request a return for a full refund, in line with consumer protection law in your country.
When you submit your order our team will confirm the correct regional version (US 120V, EU 220–240V, UK, AU/NZ or TR) before shipping.
Based on 291 reviews
Authentic Dyson, factory-sealed, full UK warranty card. Royal Mail delivered in 3 days.
— Emma W.
Cheaper than John Lewis or Boots and arrived faster. UK plug, full warranty, no issues.
— James M.
Brilliant gift for my partner. Free returns made it easy when she wanted a different colour.
— Charlotte S.
Product is stunning. Delivery a day later than estimated but support was responsive.
— Oliver T.
Same Dyson product as Selfridges sells for £100 more. Verified authentic by the serial number.
— Sophie K.
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Dyson Purifier Big+Quiet Formaldehyde BP04 — available in 50 countries
Free shipping and full 2-year Dyson warranty in every market. Select your country to see local delivery and payment details for Dyson Purifier Big+Quiet Formaldehyde BP04.