The Air 4000 focuses a clear design language and intuitive touch operation. Thanks to its unobtrusive design, the air purifier blends discreetly into the living space, while the surrounding illuminated ring provides visual information about the air quality. A quiet mode ensures relaxation, and in automatic mode the user does not have to worry about anything when filtering out allergens, contaminants and odors. The filter is easily accessible through an integrated access at the bottom.