Dyson BP04 Air Purifier Prussian Blue/Gold, Big+Quiet HEPA Air Purifier

Dyson Purifier Big+Quiet Formaldehyde BP04 (Prussian Blue/Gold) is engineered to purify large spaces quietly and effectively. Its advanced fully-sealed filtration system captures pollutants and gases while destroying formaldehyde permanently, so what goes inside stays inside.

A re-engineered Certified HEPA filter captures ultrafine particles, an activated carbon layer removes gases, and the selective catalytic oxidisation (SCO) filter breaks formaldehyde down into tiny amounts of water and CO₂. Acoustically engineered to run quietly even at full power, it projects clean air across the room while a solid-state sensor detects formaldehyde molecules far smaller than 0.1 microns. Adjust the airflow angle or use Breeze mode, and monitor everything via the MyDyson app.

• Destroys formaldehyde permanently with the catalytic filter
• Quiet operation even at its highest power setting
• Long-range airflow to purify large rooms