What Causes the Water Sound in a Car's Air Conditioning?

[Keith]

When the car's air conditioning is turned on, a water sound can be heard. This sound is produced as water flows through the heater core. Check if the engine coolant is low. In such cases, you can first add antifreeze, then press the accelerator a couple of times to let the engine run at high speed, which helps expel air from the system. Additional Information: 1. Function of Car Air Conditioning: It is used to adjust and control the temperature, humidity, air cleanliness, and airflow inside the car cabin to an optimal state, providing a comfortable environment for passengers and reducing travel fatigue. It also creates favorable working conditions for the driver, playing a crucial role in ensuring safe driving. Generally, it includes cooling, heating, and ventilation systems. This integrated system makes full use of the limited space inside the car, featuring a simple structure and easy operation, making it a popular modern car air conditioning system internationally. 2. Components of Car Air Conditioning: It mainly consists of the compressor, electromagnetic clutch, condenser, evaporator, expansion valve, receiver-drier, pipes, condenser fan, vacuum solenoid valve, idle speed controller, and control system. The car air conditioning system is divided into high-pressure and low-pressure lines. The high-pressure side includes the compressor output side, high-pressure pipes, condenser, receiver-drier, and liquid lines; the low-pressure side includes the evaporator, accumulator, return pipes, compressor input side, and compressor oil pan.