Discover what air filter media is and its crucial role in maintaining indoor air quality. Air filter media refers to the materials used in air filters—such as fiberglass, pleated cotton, and synthetic blends—that capture dust, allergens, and other pollutants. Each type of media has unique properties affecting filtration efficiency, durability, and suitability for different HVAC systems. Understanding these differences helps you select the right filter for your needs. Tap here to learn more about air filter media options.