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Why is My Air Conditioner So Loud?

Why is My Air Conditioner So Loud?

Air conditioners are not usually quiet systems, particularly around their outside unit. However, excessive noise can be a sign of potential trouble and shouldn’t be ignored. If you continue to run a noisy system without diagnosing and repairing the issue, you could experience a serious and expensive breakdown soon. However, if you diagnose the problem quickly, your repair could be a simple one, requiring only minor work to have your system running smoothly again.

Here are four reasons why your air conditioner could be so loud.

Noisy Fans

The most common source of noise is your air conditioner fan. In order to keep it working optimally, you will need to have it regularly maintained. If you are hearing excessive noise, there could be a few different causes. Debris can enter the fan chamber and rattle when it comes in contact with the fast-moving blades, causing the noise. If that’s not the case, then the blade itself may be loose; tightening it down with an Allen wrench or screwdriver may eliminate that. Finally, the blade itself may have become bent over time, causing it to touch the inside of the unit, and you can fix this by simply bending it back into place. However, you’ll want to be gentle in doing so to avoid breaking the blades, which can be delicate.

Inadequate Lubrication

The motor that drives your fan may also be the cause of the noise. If you’re hearing a humming or grinding noise, then your motor may have become dirty, particularly if it is an unsealed unit. This means it needs cleaning and lubrication, and you can do so by applying SAE 10 oil in the oil ports. If your unit is sealed, then there’s a chance your motor bearings may have gone bad, and you’ll need to have it replaced. This is a more expensive repair, but also far less common so sealed units are still preferable.

Loose Screws

A working air conditioner vibrates, and over time, vibration can loosen the screws used to fasten the parts down. Loose parts can also vibrate, resulting in a rattling noise that adds to the din of your air conditioner. When you have your unit serviced, be sure that your technician checks and tightens all important screws that may have vibrated loose.

Coil Fins

The cooling fins around your coil are integral to your system’s overall function. Over time, these fins may become bent by impact with debris, or clog up with dirt and dust. When inspect your system, examine these fins to see if perhaps this is the cause of the noise. A lack of air to the coil can cause extra noise, so clear out any debris using a vacuum cleaner with a brush attachment. Bent fins can also inhibit this air flow and cause noise. To straighten them, use a fin comb; insert the teeth between the fins and the comb will straighten out any dents or bends.

You rely on your air conditioner to keep your home cool during the blistering heat of summer, so you should always trust its care and maintenance to a professional at Texas AC & Plumbing Specialist. Our Austin air conditioning repairs experts can provide you with top-quality repair and maintenance services, backed by a 100-percent satisfaction guarantee. We are proud of our A+ rating with the Better Business Bureau, which stands as a testament to our substantial record of customer satisfaction and exceptional workmanship. Whether you need a major repair or simple maintenance service, trust our team to do the job and do it right the first time.

Schedule a service for your home’s air conditioner today! Call Texas AC & Plumbing Specialist at (512) 580-7551.


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