Advanced 360° filtration system: Three phases of purification sit within a fullysealed machine. HEPA H13 grade filter is 3.8x larger than its predecessor & 
captures 99.95% of ultrafine particles. activated carbon filter captures gases 
such as benzene and NO₂ from your environment. And the selective catalytic 
oxidisation filter traps formaldehyde in catalytic tunnels, continuously breaking 
it down into CO₂ and water.Destroys formaldehyde, permanently: Dyson's solidstate formaldehyde sensor works to detect formaldehyde molecules 500 times 
smaller than0.1 microns. Dyson's unique catalytic filter breaks the 
formaldehyde molecules apart, leaving only tiny amounts of water and CO₂ in 
the air,.Quiet, even at full power So it continually reduces your exposure to 
pollution, without disturbing you around the home.Adjust airflow at 
0°,25°or50°, the feeling of refreshing air indoors using Breeze mode