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Why Is My AC Making That Noise?

Modern air conditioning units are quieter than ever before. Because of this, it’s usually easy to notice a strange, loud, or new sound when it starts.

When you notice a strange sound, you may wonder if you need AC repairs in Bensalem. While this isn’t always necessary, some noises indicate a more serious problem and require immediate attention.

Keep reading to learn about some of the most common sounds your AC unit may make and what they could mean.

Banging Sounds

If you hear banging sounds, it’s a good sign that there’s a loose or broken part inside the unit. It may be the crankshaft, piston pin, or connecting rod in the compressor. In some cases, the indoor blower may be balanced. Banging sounds may also signify your unit’s compressor needs to be replaced.

Screeching Sounds

Another common problem is screeching sounds. This indicates a malfunctioning fan motor inside the outdoor condenser unit. The central AC system connected to your home includes a fan that will remove heat from the system’s refrigerant.

If you notice a shrieking sound, it indicates a problem with the fan motor. The sound may also result from a broken motor in the condenser system or compressor.

Clanking Sounds

Another sign of an out-of-balance or lose part is clanking noises. If you notice this problem, the parts inside your sealed unit have probably failed. The compressor may also have become loose and may require replacement in some cases. The sound could also indicate the outdoor fan or indoor blower and the blades aren’t balanced and have started to hit other parts. These issues will continue to worsen and cause even bigger issues if they are ignored.

Humming Sounds

You may start to notice humming sounds inside the AC unit due to a malfunctioning contactor relay switch. This component aims to start the outside unit when it gets the signal from your thermostat. However, if there is a problem with this, you will need a licensed professional to find the underlying issue.

Clicking Sounds

The clicking of electrical components at the start and end of a cycle is normal. However, if you notice ongoing clicking noises, this isn’t typical. This may be an indication of a failing thermostat or defective control. Remember, there are all types of electrical parts inside your AC unit. Because of this, you must pay attention to any possible electrical problems before a bigger issue occurs.

Call the Professionals for Assistance

If you notice any of the sounds or noises mentioned above or another new or unusual noise, it is best to contact the professionals. They can evaluate your system and determine the underlying issue that has caused the sound. It’s best not to wait for service for these issues, as they will only worsen as time passes.

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