The Dyson Pure Hot + Cool is the only purifying heater + fan to clean a whole room properly. To simultaneously purify and heat a whole room properly, the Dyson Pure Hot+CoolTM purifying heater + fan goes beyond standard tests by automatically sensing pollution, capturing ultrafine pollutants, and projecting purified and heater air using Air MultiplierTM technology. It is the only purifying heater + fan designed and tested to do this. 1 The AHAM AC1-2015 standard sets out how air cleaner manufacturers can define their performance by “the relative reduction of particulate matter suspended in the air in a specified test chamber” – this means their performance is based on cleaning efficiency rates only.
eBay