Air conditioning is a technology that cools and dehumidifies indoor air to create a comfortable environment. It works by circulating air through a system that removes heat and moisture, often using a refrigerant. This process helps maintain a stable temperature, especially during hot weather. Air conditioning systems can be found in various settings, including homes, offices, and vehicles. They come in different types, such as central air conditioning, window units, and portable air conditioners. Proper maintenance is essential for efficiency and longevity, ensuring that the system operates effectively throughout its lifespan.