Take an extra step to help improve your indoor air with the Filtrate Room Air Purifier device and filter. This air purifier is ENERGY STAR certified and great for small spaces. Plus, it comes with a Filtrate True HEPA Filter to help capture 99.97 Percent of particles you can't see, such as mold spores, pollen, and pet dander (Disclaimer: As small as 0.3 microns from the air passing through the filter media. Initial efficiency value).