Features Dyson's purifying fan heaters combine intelligent sensing with an advanced filtration system. A filter removes gases and odors⁵, and a HEPA filter⁴ captures 99.97% of particles 0.3 microns⁶ in size. Powerful Air Multiplier technology purifies and heats the whole room.¹  See more... Automatically senses Automatically senses, captures and traps pollutants for cleaner air. Multifunctional Intelligently purifies, heats, and cools you.² Fully Sealed Fully sealed to HEPA H13 standard. It's not just the filter that's fully sealed, it's the whole machine. So what goes inside stays inside.⁴ Air Multiplier Air Multiplier technology generates the circulation power to draw distant pollutants into the machine, projecting purified air throughout the whole room¹ Automatically senses and reacts Automatically senses and reacts to changes in air quality, then reports pollution in real time on LCD screen and on the MyDyson app³ Filter The filter is quick and easy to change. With automatic filter-life notifications on the LCD screen or MyDyson app.³ Program your machine Program your machine to turn off after pre-set intervals between 30 minutes and 8 hours Night Mode In Night mode, the machine monitors and purifies using the quietest settings with a dimmed display Control your machine Control your machine hands-free with compatible voice services. Works with Amazon Alexa, Apple Siri, and Google Home.³