Air conditioning, commonly referred to as AC, is a technology that cools and dehumidifies indoor air for comfort. It works by removing heat from the interior of a building and transferring it outside, creating a cooler environment. This process is essential in hot climates and during summer months, making living and working conditions more pleasant. In addition to cooling, AC systems also filter and circulate air, improving indoor air quality. They come in various types, including central air conditioning, window units, and portable systems, catering to different needs and spaces. Proper maintenance of AC units is crucial for efficiency and longevity.