The AC compressor is the heart of your AC system. If it’s making a noise, something is wrong.

The role of the AC compressor is to compress the refrigerant and send it through the system. If the compressor is noisy, something is likely wrong with the bearings or the valves.

If your AC compressor is making a noise, there are a few things you can try to fix it:

Check the AC Compressor Oil Level

Make sure the compressor has enough oil. If it doesn’t, it can cause the bearings to overheat and fail.

To check the level, remove the cap on top of the compressor. The oil should be up to the bottom of the fill hole. If it’s low, add some AC compressor oil. Be careful not to overfill it—you can damage the seals if there is too much oil in there.

If adding more oil doesn’t stop the noise, move on to step two.

Clean the Compressor

Sometimes, a build-up of dirt and dust can cause the compressor to make noise.

To clean it, remove the access panel on the side of the AC unit. Use a brush or vacuum cleaner to remove any dirt or debris from inside the compressor.

If this doesn’t work, it may be time to call an AC repair service. In some cases, the AC compressor will need replacement instead of repair. If that’s what you’re facing, make sure to ask your AC repair technician about any rebates or special offers they might have available for new AC units with energy-efficient features.

Replace Bad AC Compressor Belts

If your AC compressor is making a noise, look at the AC belts. If they are broken or worn out, it could cause an AC compressor to work harder than normal and make more noise as a result.

To check the AC belt tension, use this easy trick: push down on each of them a few inches from where they’re attached to the lower pulley—you should feel pressure pushing back against you if the belt is in good shape.

You can also try moving them side-to-side slightly with your hand; there shouldn’t be any movement greater than one inch before resistance sets in.

Are you wondering what kinds of noises you should look out for? Learn more here.

AC Unit Compressor Replacement

If none of these solutions work, AC compressor replacement may be your only option.

There are a few things to keep in mind when replacing an AC compressor:

AC compressors have different power ratings depending on the type and model number you’re working with. Make sure to get one that’s suitable for your unit. Don’t just pick up any old AC compressor at the hardware store.

If you need help figuring out which AC compressor will fit properly, don’t hesitate to ask an expert AC repair technician. They’ll give you advice and tips about what kind of AC unit they recommend based on their experience.

Fix a Noisy AC Compressor

AC compressors are one of the most important parts of your AC system. If you have a noisy AC compressor, it could indicate that something is wrong—and should not be ignored.

Follow these AC compressor repair tips to keep your AC unit running smoothly, and be sure to contact an AC service if you need help with anything.

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