The air you breathe inside your home needs some help. Professionally installed high-efficiency particulate air filtration (HEPA) removes the toxins, allergens and dust mites before they get to your family. Some of the press about indoor air quality and HEPA filters can be confusing. While installing HEPA involves more than just adding a new filter, your HVAC professional will be glad to explain the process and evaluate your Fresno home for improved HEPA filtration.