HEAT is the English term for heating in air conditioning. Air conditioning, also known as air conditioner, refers to the equipment that uses artificial means to adjust and control the temperature, humidity, and air flow parameters of the indoor environment in buildings or structures. It generally includes several major components such as cold and heat sources, cold and heat medium transportation and distribution systems, and end devices, as well as other auxiliary equipment. The main components include refrigeration units, water pumps, fans, and piping systems. The end devices are responsible for using the transported cold and heat to specifically handle the air state and achieve the required air parameters in the target environment.