Clean air and water are what we all need in order to stay healthy. That is why there are so many different brands and types of water and air filters. Just focusing on air filters alone makes you realize how important they are and enlighten us to the different applications in which they can be used. For example, there are AC Filters, Furnace Filters, Humidifier Filters, Industrial Air Filters, and even UV Air Treatment Filters. These all help to clean the air clean, preventing us from getting sick.