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Troubleshooting Noisy AC: Common Causes and Solutions

Troubleshooting Noisy AC: Common Causes and Solutions

Troubleshooting Noisy AC: Common Causes and Solutions

When the temperature rises and you switch on your air conditioner, you may find that it’s making more noise than usual. If you’re dealing with a noisy air conditioner, there are several potential causes and solutions that you’ll need to consider.

Loose Parts

Noisy ACs are often caused by loose parts within the unit. Everything from the fan blades and motors to the unit’s cabinet panels and nuts and bolts can become loose and noisy over time. In many cases, you can identify the issue simply by listening to your AC. But, you’ll need to confirm the issue by disassembling the unit and checking the integrity of the hardware components. If any components are loose, then the problem can be solved by firmly tightening them.


Another common cause of noisy ACs is debris that accumulates inside the unit. Clumps of dirt, dust and leaves can be sucked up into the unit, making it more difficult for the blades to turn. This can create a lot of noises as the AC attempts to run efficiently. To solve the problem, you’ll need to clean debris out of the unit—which can be done yourself or through a professional inspection.

Worn Out Parts

Finally, it’s possible that the issue is caused by worn out parts. If the AC is several years old, then the fan blades and other components may no longer be effective due to normal wear and tear. In some cases, the old parts can be tightened up to reduce the noise. In others, you may need to replace them altogether.


Troubleshooting a noisy air conditioner requires identifying the source of the problem and either replacing or tightening up the appropriate components. If you’re having trouble pinpointing the source of your AC’s noise, it’s best to call a local and reliable appliance repair company to perform a thorough inspection and diagnose the issue. They’ll be able to determine the cause of the problem and offer the best solution for repairing it. For reliable and comprehensive appliance repairs, contact Local Reliable Appliance Repair at (866) 311-8590.

Troubleshooting Noisy AC: Common Causes and Solutions
Troubleshooting Noisy AC: Common Causes and Solutions
Troubleshooting Noisy AC: Common Causes and Solutions

Troubleshooting Noisy AC: Tips to Avoid Issues

Noisy AC can be caused by many things, and addressing the issue requires targeted troubleshooting. Whether you’re looking for manufacturer recommendations or local appliance companies’ or HVAC technician’s advice on preventative action, these tips will help you determine the cause and take action.

Manufacturer Recommendations

The first step in tackling noisy AC is to consult your AC’s owner manual for manufacturer recommendations, most of which usually address common issues you can easily fix without the help of a professional. Here are some things you might find:

  1. Check the fan blower, including the fan blades and the surrounding area — dust and debris, like leaves and cobwebs, can sometimes find their way in and cause noise. Clean away these items, if found, and ensure the fan blades are free to move.

  2. Check the AC’s motor — it may need lubrication or some other additional service.

  3. Double-check the AC’s ductwork, since this is the area that should be most thoroughly inspected for signs of damage or loose material.

  4. Inspect the AC’s filter, and change or clean it, as applicable — a clogged filter can cause air restriction, resulting in increased noise.

  5. Check the AC’s compressor and assure it’s in working order.

  6. Ensure the AC’s mounting bolts are tightly secured.

  7. Turn up the AC’s power and be sure the fan is running at the correct speed.

  8. Finally, consider replacing the AC’s fan motor if it’s beginning to age or has become faulty.

Local Appliance Service Company or HVAC Technician Advice

For more complicated AC issues, it’s best to employ the help of a reliable local appliance service company or HVAC technician. Here are the main services they’ll perform to help prevent disruptive and noisy AC performance:

  1. Check the air conditioner’s refrigerant levels, since lack of refrigerant can cause extra noise.

  2. Inspect the AC’s motors for any issues with the bearings.

  3. Look for any seals that have become loose and need to be replaced or tightened.

  4. Confirm the AC’s condenser, evaporator, and compressor are positioned correctly.

  5. Inspect the unit’s wiring to ensure all connections are secure.

  6. Look for any signs of physical wear and tear or leaking refrigerant.

  7. Check the AC’s ducts to make sure insulation remains in good condition.

  8. Ensure all belts, fans, and blowers are properly aligned, installed, and tightened.

  9. Replace worn out or broken AC parts when necessary.

By taking these steps, either on your own or with the help of a professional, you’ll be well on your way to reducing the noise coming from your AC. With targeted diagnostic checks, you can pinpoint the source of the noise and more effectively troubleshoot the issue.

Troubleshooting Noisy AC Repair Costs

It is important to know the current repair and installation costs for a noisy AC unit in California. Prices are up by 20%, so taking this into account is essential for getting a realistic estimate. The cost of repairs and installation varies significantly based on the parts needed and the complexity of the work, so a minimum and maximum cost can be expected.

There are a few parts that may be necessary when troubleshooting a noisy AC unit:

  • Replacement Compressor: This part can run anywhere from $345-$1,485 and is usually one of the most expensive parts needed.
  • Refrigerant Gas: Typically runs around $25/pound, and the amount of refrigerant needed will depend on the damage done to the part that needs to be replaced.
  • Replacement Motor: Can range from $125-$495, depending on the size and power of the motor that needs to be installed.
  • Replacement Electrical Components: This will depend on which components need to be replaced, ranging anywhere from $10-$550.

When it comes to installation, the repair cost will vary depending on the complexity of the work. The minimum cost for installation can be expected to be around $200 and the more complex repairs can cost upwards of $1,000. This cost is often determined by how much time and labor is involved in properly repairing and/or installing the unit. If a repair specialist is used, the cost can include materials, labor, and overhead costs used to cover the repairman’s time and travel.

For the best professional advice, we recommend calling Local Reliable Air Conditioning & Heating at (866) 311-8590. They can provide an accurate estimate and save you time and money in the long run.

Learning to Troubleshoot a Noisy AC

Noisy ACs can be annoying and unknown problems may cause them. If you have problems with your system, it might be time to turn to the professionals. California Reliable Air Conditioning & Heating is a family-owned business that offers same-day service for HVAC repair and installations. They have experienced and highly-trained technicians with a minimum of five years of experience in the field who can help you troubleshoot and fix any troubling issues your AC is having.

The company is licensed and insured and all services come with a 90-day guarantee. Plus, their prices are affordable, allowing customers an opportunity to add on any other services needed as part of their service. With same-day service available for appliance and HVAC repair and installations, you can feel comfortable knowing you’re in good hands.

Don’t wait any longer to get your AC issue resolved, choose the experts at Reliable Air Conditioning & Heating and you won’t regret it. Troubleshooting noisy ACs is their speciality and they strive to offer the best possible customer experience every time. You can trust that they will make sure your problem is addressed and fixed in no time. Let them take the hassle out of dealing with a noisy AC and you’ll be glad you did.

FAQ – Troubleshooting Noisy AC: Common Causes and Solutions

What are common causes of a noisy AC?

Noisy central AC units can be caused by various factors. Issues such as a worn fan motor, a broken belt, or a dirty compressor can generate loud sounds. Additionally, loose components, a build-up of dirt and debris, or incorrect installation can result in a noisy AC.

How can I inspect if the fan motor is worn?

To inspect the fan motor for wear, turn off the power and visually inspect the fan blades. Make sure the blades are on track and undamaged. Additionally, you can check that the motor is securely mounted. Finally, you should look for signs of rust or corrosion that could indicate that the fan motor needs to be replaced.

What’s the best way to check the compressor for dirt?

The best way to check the compressor for dirt is to open the compressor area and visually inspect it. Look for any dirt, dust or debris that might be inside. You can also look for any signs of damage or wear that could be causing a noisy AC.

What should I do if I think the belt is broken?

If you think the belt might be broken, you should turn off the power and gently inspect it. Check the belt for any signs of breaking or wear. If the belt is broken or worn down, you should replace it.

Is there anything else I should inspect if my AC is making a loud noise?

Yes, you should also inspect for any loose components or air leaks which may be causing a noisy AC. Additionally, make sure all the filters are clean, as a clogged filter can result in a noisy AC.

Is there anything else I can do to reduce the noise?

Yes, you can try to reduce the noise coming from your AC by making sure all the components are tightly fitted and securely connected. Additionally, you should make sure the airflow isn’t blocked, as this can result in an increase in noise.

In the event the cause of a noisy AC cannot be identified, it’s best to contact a local reliable appliance repair company. Local Reliable Appliance Repair provides troubleshooting services and repairs for all types of AC units. Contact them at (866) 311-8590 for more information.

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