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See why Dyson heaters are faster to heat the room evenly
![Dyson robotic rig](https://dyson-h.assetsadobe2.com/is/image/content/dam/dyson/products/air-treatment/pure-hot-plus-cool-2018/engineering/air-quality-pure-hot-cool-engineering-personal-cooling.jpg?$responsive$)
![Testing the Dyson Pure Hot+Cool purifier fan heater](https://dyson-h.assetsadobe2.com/is/image/content/dam/dyson/products/air-treatment/pure-hot-plus-cool-2018/engineering/air-quality-pure-hot-cool-engineering-polar-test_2.jpg?$responsive$)
How we pushed beyond industry test standards, to purify every corner of the room¹
![Demonstration of how long the HEPA filter is](https://dyson-h.assetsadobe2.com/is/image/content/dam/dyson/products/air-treatment/pure-hot-plus-cool-2018/engineering/air-quality-pure-hot-cool-engineering-hepa-filter.jpg?$responsive$)
![Sketch of football pitch](https://dyson-h.assetsadobe2.com/is/image/content/dam/dyson/products/air-treatment/pure-hot-plus-cool-2018/engineering/air-quality-pure-hot-cool-engineering-carbon.jpg?$responsive$)
![Dyson engineer sketch book](https://dyson-h.assetsadobe2.com/is/image/content/dam/dyson/products/air-treatment/pure-hot-plus-cool-2018/engineering/air-quality-pure-hot-cool-engineering-sketch-book_1.jpg?$responsive$)
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Direct from Dyson
¹Hulin et al, Respiratory Health and Indoor air pollutants based on quantitative exposure assessments, European Respiratory Journal, October 2012.
²Tested for filtration efficiency at 0.1 microns (EN1822).
³Tested for air projection (DTM801), purification coverage in a 81m3 room (TM-003711) and heating performance in a 35m3 room (DTM 961)
⁴Requires device to run app, 2.4GHz or 5GHz Wi-Fi connection or mobile data, Bluetooth 4.0 support, and iOS version 10 or Android version 5 (or above). Standard data and messaging rates may apply.