The Dyson Purifier Big+Quiet Formaldehyde blows air over 10 metres to clean large rooms.

Quiet, even at full power
Acoustically designed to work quietly - even at the highest power settings. So it continuously reduces your exposure to pollutants without disturbing you in your home.

Advanced 360° filtration system
Three phases of cleaning are contained in a fully enclosed unit that meets the HEPA H13 standard. It captures 99.95% of ultra-fine particles down to 0.1 micron in size. Removes gases and odours.

Intelligent sensor system
A series of intelligent sensors detect pollutants throughout the room and report in real time. Our unique algorithm checks the data every second and analyses your air at a molecular level.

Designed to clean large rooms
Thousands of tests have been carried out to ensure that the sensors, filter system and motor work together to clean large rooms.

Unique selective catalyser filter
Dyson's unique catalytic filter traps formaldehyde in catalytic tunnels and continuously breaks it down into CO₂ and water. It never needs to be replaced.

360° HEPA H13 filter
The HEPA H13 filter is 3.8 times larger than its predecessor and captures 99.95% of ultra-fine particles down to 0.1 microns in size from the air.