Shark's NeverChange air purifier quickly and quietly cleans the air in your homeand only requires a filter change every five years. The Pureshield anti-allergen HEPA filter captures dust, pollen, dander, smoke and other particles of all sizes, and the CleanSenseIQ display delivers real-time alerts about your indoor air quality. An integrated cartridge neutralizes orders while releasing a lovely scent. Dimmable lights and ultra-quiet performance keep the air clean as you sleep.