Reasons for Abnormal Noises in Car Air Conditioning?

[VonCameron]

Relevant information regarding abnormal noises in car air conditioning is as follows: 1. Abnormal noise from the air conditioning compressor: The electromagnetic clutch of the compressor is damaged. As a rotating working component that adjusts operation, any malfunction or severe internal wear in the compressor can produce abnormal noises. 2. Abnormal noise from the compressor's electromagnetic clutch: The compressor frequently operates from low to high speeds under high load, placing high demands on the electromagnetic clutch. When the bearings inside the electromagnetic clutch are damaged, abnormal noises occur. 3. Loose compressor drive belt: If the drive belt is too loose, the electromagnetic clutch is prone to slipping; if the drive belt is too tight, the load on the electromagnetic clutch increases.

[MartinRose]

The air conditioning in my car started making an annoying buzzing noise recently. The blower fan is likely the main culprit, with leaves or small insects stuck inside, causing the blades to scrape against the air ducts when spinning. The compressor belt might be loose or worn out, squealing when the AC is turned on; worn compressor bearings can also produce a rattling sound during operation. If the cabin air filter hasn't been replaced for too long, dust buildup can clog it, forcing the fan to work harder and generate abnormal noises. Insufficient refrigerant due to leaks leads to unstable system pressure, resulting in buzzing sounds. Always remember to close windows when parking to prevent debris from entering the vents; regularly clean the AC system and replace the filter. Neglecting these issues may lead to costly repairs if the compressor fails. Remember, addressing minor abnormalities early saves hassle and money, ensuring a worry-free drive.

[ColinLee]

As someone who frequently deals with cars, air conditioning noises commonly occur in a few areas. The blower fan issue is the most common, where foreign objects stuck in the blades or motor shaft wear cause abnormal sounds. Incorrect tension or cracking of the compressor belt can produce a popping noise upon startup; if internal components like bearings are damaged, a rattling sound may occur. Loose pipe connections or refrigerant leaks can cause system vibrations leading to noise. A clogged air conditioning filter increases the fan load, resulting in abnormal sounds. Start inspections with the simple steps: clean debris from the filter and adjust the belt tension. If the noise location is obvious, you can preliminarily check the compressor. Don’t delay—address issues early to prevent minor problems from worsening. Regular maintenance can save you a lot of trouble.

[McGia]

My car's air conditioning has been making loud noises recently, clearly due to poor maintenance. Dust accumulation on the fan blades causing deformation and scraping against the air ducts, or a loose compressor belt creating abnormal sounds. A dirty and clogged filter can also cause the fan to operate abnormally and produce noise. Regularly replacing the filter and cleaning the system can prevent these issues. Ignoring it may lead to louder noises and damage to components.