Why Does the Car Air Conditioner Make a Gurgling Water Sound?

[Gavin]

Possible reasons for the gurgling water sound in a car air conditioner include: 1. Normal vaporization cooling process: The gurgling sound from the indoor unit is caused by the normal refrigerant vaporization cooling process in the pipeline. 2. Indoor unit fan: Caused by operational vibrations, in which case the outlet louvers should be properly secured and the filter cleaned. 3. Semi-fluid flow: The sound of refrigerant in a semi-fluid state flowing through the pipes, which can also be resolved by adjusting the liquid outlet valve. 4. Normal phenomenon: Flowing sounds during air conditioner cooling are normal, especially right after startup. As long as the water-like sound is not too loud, it should become inaudible once the system stabilizes. If this sound persists frequently, it may indicate a vehicle issue. Poor installation, such as a flattened copper pipe, can also cause gurgling or water-like sounds.