"The Dyson Pure Cool purifying tower fan, TP04. The only purifying fan to clean a whole room properly. Dyson technology helps create a cleaner, healthier home - Our vacuums and purifiers are scientifically proven to capture particles as small as allergens and bacteria. We design our purifying fans to go beyond test chamber conditions and focus on real home conditions - this is more than just having an efficient filter.1 Dyson engineers and research concluded that to clean an entire room properly, you need to sense pollution events automatically; capture ultrafine pollutants; and project cleaner air around the room using Air Multiplier technology. Only the Dyson purifying fan is designed and tested to do all of this.2 1The 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. 2Tested to Dyson internal test method TM-003711 in a 290ft2 room and DTM801. Color: White. Gender: unisex."