ProSource EcoHelp HEPA Filter for Ecoquest Alpine Living Air Classic XL-15 and Fresh Air by Ecoquest;

With EcoHelp installed on the back of your Classic, Alpine Air users get the benefits of quick reduction of large particulate like dust, dead skin, floating dust mites and pollen, allowing the Living Air to work even more effectively. In fact, Alpine Air with EcoHelp now boasts a great CADR (Clean Air Delivery Rate) for: Smoke, dust and pollen With this True Hepa Filter installed on the back of the unit, you get the benefit of quick reduction of large particulates like dust, dead skin, floating dust mites and pollen, allowing your air purifier to work even more effectively. With Hepa Filter installed on the back of your air purifier cleaning of your air purifier is due once every 3 months. Without Hepa Filter cleaning is due monthly.