Key features       50% quieter, even at full power Acoustically engineered to produce less noise. Night mode is 50% quieter than any other Dyson purifier. With a Sleep timer so you can set it and forget it.       Powerful projection to cool you down Delivers over 21 gallons of purified air per second. Adjust the angle of airflow between 0°, 25° or 50°, or mimic the feeling of refreshing air indoors using Breeze mode.       Long-lasting filter The HEPA H13-grade filter lasts up to 11 years.⁹ Remove and dispose in one click.       Control via the app Monitor what’s been captured, set schedules, browse reports, and more with the MyDyson™ app.⁵       Always sensing In Auto mode, your purifier reacts automatically to remove pollutants, only using energy when needed.       Alerts you to high CO₂ levels Reports and alerts you when CO₂ levels are harmfully high.       Easy to manoeuvre Discreet, hidden wheels designed for hard surfaces let you easily move your machine around the room.   Discover the pioneering technology inside This is a carousel with slides. Use Next and Previous buttons to navigate, or jump to a slide with the slide dots. Cone aerodynamic projection Drives high-velocity air jets over the machine’s dome which coalesce to project a focused stream of air. To purify large spaces, quietly.³ Or cool you when required.   Our most advanced suite of sensors A suite of sensors interact with our unique algorithm, cross-checking pollution data every second and reporting live results onscreen or the MyDyson™ app.⁵   Our most advanced filtration system HEPA-H13, K-carbon and SCO filtration captures particles and gases including formaldehyde – within a fully sealed machine. So what goes inside, stays inside.¹²   In the box Dyson Purifier Big Quiet Formaldehyde BP04 (Prussian Blue/Gold) HEPA filter   Remote Control   Dyson K-Carbon Filter