Why is there no heating in the car?

[OAlice]

The reasons for no heating in the car include: clogged heater core, thermostat failure, or heater valve malfunction. The specific cause can be diagnosed and repaired at a maintenance shop. The working principle of air conditioning heating is: after turning on the heating function, the high-temperature coolant from the engine flows through the heater core, and the air blown by the blower passes through the heater core, resulting in warm air from the air conditioning vents. The components of a car air conditioning system include the refrigeration system, heating system, air distribution system, and control system. The functions of car air conditioning are: 1. Adjusting the temperature, humidity, airflow direction, and speed inside the car while improving air quality through filters; 2. Providing a comfortable riding environment for passengers, reducing travel fatigue, and creating favorable working conditions for the driver.