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How to Fix a Loud Central AC Unit

How to Fix a Loud Central AC Unit

How to Fix a Loud Central AC Unit

No one likes a loud, rattling central AC unit. The noise can be very disruptive and even keep people awake at night, but there’s hope. Most AC unit problems can be fixed or at least minimized for a quieter, smoother operation.

Check the AC Unit Filters

Central AC units need good filters to keep dust from entering the system. If the filters are blocked, dust buildup in the system can disrupt airflow and cause the AC unit to work harder and louder. Check or change the filters regularly for the best results.

Check the AC Unit Drainage

A clogged AC drain can cause water leakage and, in extreme cases, ice accumulation. This can cause a loud rattling on the outside unit, usually due to the fan. Clean the drainage tube often (at least once a month) and clear any ice that accumulates.

Check the Unit’s Refrigerant

The refrigerant used by an AC unit can cause noise. If the refrigerant is not working properly, it can create an unbalanced airflow and result in loud noises. Check the system’s refrigerant level with an AC gauge. If it’s too low, it could need a recharge to fix the issue.

Check the Fan’s Motor and Bearings

Check the fan’s motor and bearings for dirt, debris, or worn-out parts. Clean out any dirt or debris and replace any worn-out parts. If the motor is unbalanced, get it rebalanced by a professional AC technician.

Call a Professional

If all the DIY fixes above don’t fix the problem, call a local reliable appliance repair shop. A professional technician can diagnose and repair the underlying cause of why your AC unit is making a loud noise.

At Local Reliable Appliance Repair, our experienced and certified technicians can help you get your AC unit running smoothly and quietly. Our technicians use the latest tools and techniques to help diagnose and repair your AC unit quickly. Give us a call at (866) 311-8590 and our knowledgeable technicians can help you get your AC unit functioning at its best.

How to Fix a Loud Central AC Unit
How to Fix a Loud Central AC Unit
How to Fix a Loud Central AC Unit

Preventive Action to Avoid Loud AC Unit Issues

No one enjoys a loud and disruptive AC unit, so it is important for homeowners to take preventative action to ensure that their AC system is running quietly and efficiently. In this article, we will look at manufacturer recommendations, local appliance companies, and HVAC technician’s recommendations regarding preventive action to avoid Loud AC unit issues.

Manufacturer Recommendations

Manufacturers of AC units recommend that homeowners thoroughly inspect their AC unit before and after use. Checking the coil fins for damage, inspecting seals and washers for wear, and cleaning debris and debris are regular steps in the preventive maintenance of an AC system. Also, having a professional check the refrigerant charge and blower operation is important to prevent loudness.

Local Appliance Companies

Local appliance companies have the knowledge and experience to identify which components of an AC system may need replacement or repair. For example, if a compressor is loud, but is still working, a local appliance company can give advice on whether the AC system requires lubrication or a new compressor. If the AC unit is too loud due to a dirty evaporator core, they can advise on how to clean the unit and replace filters with new ones, as well as provide tips on how to reduce AC loudness.

HVAC Technician’s Recommendations

HVAC technicians can inspect an AC unit to assess how it is functioning, as well as its noise level. They may suggest replacing the fan motor, fan blades, or thermostat to help reduce noise. They may also recommend adjustments to fan speeds and inquire about the type of insulation used in the home.

It is important to note that if an HVAC technician finds that the loudness is caused by a major issue, it is better to replace the entire unit rather than perform repairs. This is due to the fact that repairs may not solve the root cause of the problem, and could cause additional problems in the future.


By adhering to manufacturer recommendations, local appliance companies, and HVAC technician’s recommendations, homeowners can prevent their AC system from becoming overly loud. Adopting preventive maintenance, such as regularly cleaning and inspecting the AC unit, as well as replacing damaged components, can help to avoid loudness. Lastly, if it is determined that a repair is necessary, it is best to follow the advice of an HVAC technician as this is most likely the most reliable option.

Professional Advice for the Average Repair Cost of a Loud AC Unit

With prices up 20% in the city of California, the minimum repair or installation cost of a loud AC unit varies greatly depending on the cause of the loudness and the materials needed.

It’s best to call a local, reliable air conditioning and heating specialist for an accurate estimation. Try Local Reliable Air Conditioning & Heating at (866) 311-8590 for mechanical examination, repair and installation advice.

The complex repair or installation cost in California can range from several hundred to several thousand dollars, depending on the parts that need to be replaced. The following items may be necessary for repair and could influence the cost:
* Fan
* Condenser
* Compressor
* Refrigerant
* Copper Lines
* Electrical Wiring
* Thermostat

In addition to the repair cost, the cost of materials should also be considered. This includes any filters, gaskets, clamps, sealing materials and tubing that are needed. This could add hundreds of dollars to the repair price.

By determining the root cause of the loud AC unit and getting professional help, you can save money and ensure a safe, reliable operation. Local Reliable Air Conditioning & Heating at (866) 311-8590 can provide an itemized list and an estimate for repairs and materials.

Living with a Loud AC Unit? Not Anymore!

Are you living with a noisy or loud AC unit? Let Reliable Air Conditioning & Heating help! We are a California based, family-owned, licensed and insured vendor specializing in AC repair and installations. We guarantee same-day service and have experienced technicians with a minimum of 5 years in the field.

Our technicians can quickly diagnose and provide relief from those loud noises or vibrations that may be coming from your AC unit. We provide fair and affordable pricing so you don’t have to sacrifice quality for price. Plus, every repair comes with a 90-day warranty. With our decades of experience, you can trust that your AC unit will be taken care of right the first time.

Don’t wait – contact Reliable Air Conditioning & Heating and resolve your loud AC unit problem now! Our technicians will work quickly and diligently to fix your AC unit so that it runs quietly and efficiently. We use only the highest quality parts and materials to ensure long-term satisfaction and enjoyment of the comfortable atmosphere in your home.

FAQ – How to Fix a Loud Central AC Unit

What is the cause of a loud AC unit?

Loud noises from an AC unit can be caused by a variety of issues, including loose parts, clogged condensate drain lines, failing compressors, and debris caught in the blower fan.

How can I identify the source of the loud noise?

Steps should be taken to identify the source of the noise to establish which part needs to be fixed or replaced. This may include checking the fan blades, belts, and pulleys to determine if they are loose. Additionally, it is important to inspect the condensate drain lines and look for any dirt or debris blocking it, as well as check if the compressor is functioning properly. Additionally, you should turn off the unit and listen for any noises.

How do I fix a loud AC unit?

There are a few potential solutions to fixing a Loud AC unit. If the fan blades, belts, and pulleys are loose, secure them into place. If the condensate drain line is blocked, unblock it to ensure it runs freely. If the compressor is failing, you may need to replace it. Additionally, taking apart the unit and removing any debris from the fan or blades can help reduce noise.

What should I do if the problem persists?

If the issue does not go away after trying the steps above, then it is time to call a professional. A professional will have the tools and knowledge needed to identify and properly fix any additional issues that could not be detected by the individual.

If you are experiencing loud noises with your AC unit and have tried the above steps, it is time to call a local reliable appliance repair service. Call Local Reliable Appliance Repair at (866) 311-8590 for help in fixing your loud AC unit.

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