The Dyson Pure Hot + Cool Link has triple functionality: it purifies airflow year-round, runs as a cooling fan during the summer and is a powerful heater in the winter. The HEPA filter removes 99.97% of allergens and pollutants as small as 0.3 microns including pollen, dust, mold spores, bacteria and pet dander. Its secondary filter layer with active carbon captures household odors and volatile organic compounds such as paint fumes. Perfect for sufferers of Asthma and Allergy Friendly. This item automatically monitors and reacts to changes in air quality. With the Dyson Link app, real-time air quality reports and allows users to remotely control the machine from any smartphone. The Dyson also has an auto mode, sleep timer, night-time mode and is easy to clean. With no fast-spinning blades it’s safe for little fingers or paws.