Air compressors are versatile machines that convert power into compressed air, which is then used to power various tools and equipment. They work by drawing in air and compressing it into a storage tank, creating a high-pressure air reserve that can be released as needed. There are several types, including reciprocating (piston), rotary screw, and centrifugal compressors, each suited for different applications. Air compressors are commonly used in industries for powering pneumatic tools, inflating tires, operating machinery, and in HVAC systems. They come in various sizes and capacities, from small portable models to large stationary units, catering to both light-duty and heavy-duty tasks.