![Dyson Pure Cool Filter technology](https://dyson-h.assetsadobe2.com/is/image/content/dam/dyson/products/air-treatment/pure-cool-2018/technology/air-quality-purifier-pure-cool-tech-hero.jpg?$responsive$)
Technology
Filter technology.
![Dyson Pure Cool Filter close up capturing pollutants](https://dyson-h.assetsadobe2.com/is/image/content/dam/dyson/products/air-treatment/pure-cool-2018/technology/air-quality-purifier-pure-cool-tech-filter-explosion.jpg?$responsive$)
![Dyson Pure Cool Glass HEPA borosilicate fibers close up](https://dyson-h.assetsadobe2.com/is/image/content/dam/dyson/products/air-treatment/pure-cool-2018/technology/air-quality-purifier-pure-cool-tech-hepa.jpg?$responsive$)
![Dyson Pure Cool carbon filters captures gases magnified](https://dyson-h.assetsadobe2.com/is/image/content/dam/dyson/products/air-treatment/pure-cool-2018/technology/air-quality-purifier-pure-cool-tech-graphite.jpg?$responsive$)
-
PM 10
Pollen and allergens
from plants and flowers -
PM 5.0
Bacteria and
mould
-
PM 2.5
Industrial
emissions -
PM 0.1
Ultrafine particles
and viruses
-
Formaldehyde
Carpets, rugs
and flooring
-
Odours
Household fumes
and cooking
-
Benzene and VOCs
Cleaning products
and scented candles
-
Nitrogen Dioxide
Gas stoves and
car exhausts
![Dyson Pure Cool sensor close up](https://dyson-h.assetsadobe2.com/is/image/content/dam/dyson/products/air-treatment/pure-cool-2018/technology/air-quality-purifier-pure-cool-tech-sensor.jpg?$responsive$)
Particulate sensor
Uses laser measurement for constant particulate concentration analysis.
Gas sensor
Detects Volatile Organic Compounds (VOCs) and oxidising gases such as NO2.
Humidity and temperature sensor
Constantly monitors the relative humidity and temperature levels within the room.
![Dyson Pure Cool delivering 290 liters of powerful airflow per second](https://dyson-h.assetsadobe2.com/is/image/content/dam/dyson/products/air-treatment/pure-cool-2018/technology/air-quality-purifier-pure-cool-tech-multiplier.jpg?$responsive$)
![Dyson Pure Cool two airflow modes](https://dyson-h.assetsadobe2.com/is/image/content/dam/dyson/products/air-treatment/pure-cool-2018/technology/air-quality-purifier-pure-cool-tech-diffused.jpg?$responsive$)
Two airflow modes.
An air valve mechanism is driven by a brushless stepper motor, to allow remote actuation and switching between Diffused mode and Fan mode. The stepper motor drives a pinion gear, which turns a rotational baffle driver around the arc of the amplifier. Angled slots in the baffle driver move the baffle forwards and backwards.
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¹Tested to EN1822. Particles as small as 0.1 microns.
²In max setting. Tested for filtration efficiency (EN1822) at 0.1 microns and "excellent’’ whole room coverage (TM-003711 and DTM801) in a 27m² room.