The pure cool link tower fan automatically purifies your home by removing 9995 of allergens and pollutants as small as 01 microns at the same time the desk fan has a 360 degree glass hepa filter which captures ultrafine particles from the air including pollen bacteria and pet dander there is also a layer of carbon granules which removes potentially toxic fumes and odours it does this year round with it working as a purifying fan in the summerthe pure cool link tower fan constantly mon