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Why is there a strange noise when the air conditioner is on?

1 Answers

JohnnyRose

07/29/25 12:59pm

The reasons for strange noises when the air conditioner is on are as follows: 1. From the radiator fan of the car's water tank: Since the car fan receives the command to turn on the air conditioner, it will operate at high speed. Normally, it only works when the water temperature is high, but it needs to run continuously when the air conditioner is on, which significantly increases the noise. When the fan becomes unbalanced due to dirt accumulation, the noise becomes louder and is accompanied by car body vibration. 2. From the air conditioner blower: When the blower motor bearings are worn or lack lubricating oil, noise will also occur, usually a sharp sound. Another reason is not replacing the air filter element in time, causing it to accumulate dust and become unbalanced, leading to resonance and strange noises. 3. From the noise of the air conditioner compressor belt: When the air conditioner is turned on, the compressor engages, increasing the load on the belt. When the belt is loose or aged, strange noises will occur.

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