human demands on the environment often due to physical fitness, age, gender, habits and health status and not the same. But under normal circumstances, most people’s requirements or about the same. Suitable temperature, proper humidity, airflow and appropriate clean air, the air conditioner constitutes three elements: temperature, humidity and cleanliness. A complete automotive air conditioning system by regulating the temperature, humidity, wind speed and ventilation, etc., to achieve the purpose to create a comfortable cabin environment.