Dyson’s purifier and humidifier features integrated sensors that constantly analyze air and display live results. The HEPA filter captures 99.97% of particles that are 0.3 microns in size, and additional filters remove odors and VOCS, while the catalytic filter traps and breaks down formaldehyde molecules. The 1-gallon tank supports up to 36 hours of humidification. Compatible with Alexa, Siri and Google Assistant and certified by the Asthma and Allergy Foundation of America.