An air dryer is a device used to remove moisture from compressed air in various applications. It helps prevent water from damaging equipment, ensuring efficient operation in industries like manufacturing and automotive. By maintaining the quality of compressed air, air dryers contribute to the longevity of tools and machinery. There are different types of air dryers, including desiccant dryers and refrigerated dryers. Desiccant dryers use materials that absorb moisture, while refrigerated dryers cool the air to condense and remove water. Both types play a crucial role in maintaining the performance and reliability of pneumatic systems.