How Your Allergies Can Benefit From Hepa Filters Free PLR Article Hepa filters are the most effective air cleaning systems sold for home use. They are used in hospitals and doctors recommend them above other air filtration systems for in an air cleaner or combined with another method, such as an electrostatic air purifier. These filters are sometimes used on another appliance, such as a vacuum cleaner or humidifiers in cold weather or a dry climate. Effectiveness of Hepa ...