Dyson purifiers have intelligent sensing. Three sensors work in harmony to constantly monitor your air quality – interacting with a unique algorithm to diagnose and report pollutants in real-time. It also has two layers of purification to thoroughly clean your air. HEPA H13 and activated carbon filtration capture gases and 99.95% of pollutants as small as 0.1 microns. And the whole purifier, not just the filtration system, is fully-sealed to HEPA H13 standard – so what goes inside, stays inside. Only Dyson purifiers have Air Multiplier technology, to purify the whole room. It generates powerful circulation, drawing pollutants from every corner into the filters and projecting purified air throughout the room. Additionally, Air Multiplier technology projects purified, heated air throughout the room. Once your target temperature is reached, heating automatically stops. In warmer weather, a powerful stream of purified airflow can cool you down. Pollution isn't just a problem outside. In fact, the average home can be up to five times more polluted than the air outside. On top of this, dry air from central heating and air conditioning can affect the air we breathe. Fortunately, we have a solution to both – all year round.