Thanks to exclusive four-stage filtration system, Rowenta’s Intense Pure Air is the only Air Purifier on the market that filters 99.97% of indoor pollution. This XL size is ideal for spaces up to 835 square feet. Its NanoCaptur technology permanently destroys Formaldehyde—the most harmful home pollutant—which can be emitted by cleaning products and building materials. Smart sensors detect particles and pollutants in the air, and then automatically adjust filtration speed, ensuring your air stays as pure as possible.