How To Quiet A Noisy Car AC Compressor?

Naturally, any strange noises that a vehicle emanates are cause for concern, particularly if they keep happening after several attempts to fix the problem. If you hear a loud noise when your air conditioner is on, there’s a good chance the AC compressor is faulty.

After all, a good automobile should not make any noises that you are unsure about. These sounds might be worrying in some circumstances, but there is usually an easy remedy for this problem in most cases.

Repairing ac AC compressor might appear to be a complicated task if you’re not familiar with different automobile components. However, in most cases, it is simple to repair and will make less noise.

In this post, we’ll go over the reasons for a noisy car AC compressor as well as how to reduce and repair it. Hopefully, you’ll find this post informative.

What Is the Cause of a Noisy Car AC Compressor?

A noisier air conditioner compressor typically means that the system needs to be serviced or that the refrigerant charge should be checked and adjusted. The following are some of the more common causes of a noisy compressor:

Air leaking into the evaporator coil and causing it to freeze up – The compressor will have to work harder to circulate refrigerant, and this will cause noise.

A loose or damaged belt – The compressor may be struggling to turn the pulley, causing the noise. It will also cause the unit to run less efficiently, which will increase your energy bills.

Worn out bearings – Worn out bearings happen over time and will eventually cause the compressor to fail. These will need to be replaced in order to quiet the compressor down.

Dirty coils – The compressor may be working harder than necessary to circulate refrigerant through dirty coils. This will cause noise and reduce the efficiency of the unit.

Low refrigerant charge – The compressor may be struggling to circulate refrigerant through the system, causing the noise. This can be caused by a refrigerant leak or simply having too little refrigerant in the system.

Failed start capacitor – Failed start capacitor happens when the capacitor, which helps the compressor start up, fails. This will cause a loud humming noise as the compressor tries unsuccessfully to start.

If you’re hearing a noisy compressor, it’s best to have a trained technician take a look at it to diagnose the problem and recommend the necessary repairs. A noisy compressor can indicate a serious problem that will only get worse over time.

Read also: How Much Does it Cost to Replace an AC Compressor?

How To Quiet a Noisy Car AC Compressor?

A noisy car AC compressor can be quite irritating, not to mention disruptive. Here are 8 tips on how you can try to quiet your noisy car AC compressor and get some peace and quiet while you’re driving:

Replace the AC Compressor

The first thing you can do to try to fix a noisy compressor is to replace it with a new one. This is obviously the most expensive option, but it may be necessary if your current compressor is very old or damaged.

You can find replacement compressors at most auto parts stores.

Clean the AC Compressor

Another option is to simply clean your compressor. Over time, dirt and debris can build up on the compressor, causing it to work less efficiently and make more noise.

You can use a brush or compressed air to clean the compressor, being careful not to damage any of the delicate parts.

Replace Worn Parts

In some cases, the noise your compressor is making could simply be a result of worn-out parts. If your compressor is more than a few years old, it’s probably time to replace some of the key components, such as the clutch assembly, drive belt, and bearings.

Doing so will help to ensure that your compressor operates quietly and effectively for years to come.

Add Sound Damping Material

If your compressor is relatively new and all of the parts are in good working order, then the noise could be coming from vibrations.

In this case, you can try adding some sound damping material to the compressor itself. This will help to reduce the amount of noise that’s emitted.

Remove Excess Refrigerant Liquid

If your car’s compressor is noisy, it could be because there is too much refrigerant liquid in the system. To fix this, you will need to remove the excess liquid.

This can be done by draining the refrigerant from the system and then recharging it with the proper amount of refrigerant.

Lubricate the AC Compressor

Compressors can become noisy over time as the oil inside them breaks down and no longer lubricates the moving parts effectively. You can purchase compressor oil at most auto parts stores. Just add a few drops to the area where the compressor connects to the engine block.

Schedule Regular Maintenance

Finally, one of the best ways to keep your compressor running quietly is to schedule regular maintenance. This way, any potential problems can be detected and fixed before they cause too much noise.

By following these tips, you can help to ensure that your car’s air conditioning compressor runs quietly and effectively for years to come.

Read also: Which type of compressors are used in cars?

Let Us Summarize

We hope that this post has been both beneficial and useful to you. There are several causes for an AC compressor to be noisy. However, all of these concerns are simple to fix and repair.

Replacement of the AC compressor is rather costly, particularly because it generally necessitates replacing the entire unit. As a result, if at all feasible, you should try to repair the problem. If the compressor is regularly lubricated and if any broken components are discovered, the cost of repair will be lower.

In certain situations, all you have to do is remove any extra refrigerant liquid that may be there. You’ll need to make sure you’re using the proper products, like the oil. You should be cautious about using the wrong products or using too much oil since doing so might cause more harm.

The AC compressor’s noise levels should significantly decrease after following the methods described above. However, if they don’t, you may need to consult with a specialist about the problem.