This Philips PureProtect air purifier's powerful filtration can handle large spaces up to 135 m². It will even clean a 20 m² room in less than 6 minutes - perfect at home or the office. Its three-layer HEPA filtration captures 99.97% of particles down to 0.3 microns in size. That's smaller than the smallest known virus! And its SilentWings technology is inspired by the silent flight of owls. It runs quieter than a normal conversation, even on full power. That means it won't distract you from your work or evening in front of the tele.Good to know- It captures 99.99% of allergens including dust mites, pollen, pet and mold spores- The active carbon layer traps and removes nasty pongs to keep your home smelling fresh- It removes 99.99% of airborne viruses and bacteria including Influenza and COVID-19- AeraSense technology scans the air 1000 times a second and shows the results in real time- Download the Air+ app to track the air quality and control it remotely from your phone