How to Make Air Conditioner Quieter

Summertime can be noisy, especially when the air conditioner is running. While an air conditioner’s noise level is not usually a top priority for most people, there are ways to make it quieter if it is bothering you. In this blog post, we will explore some ways on how to make air conditioner quieter.

One is to clean the filters regularly and ensure that the unit is correctly sized for your space. You can also try installing acoustical panels or soundproofing materials to help dampen the noise. Finally, you can adjust the settings on your unit to run it more efficiently. Keep reading to learn more!

How to Make Air Conditioner Quieter

6 Reasons That Causes Noisy Air Conditioner

1. A Dirty Air Filter:

A filter’s job is to clean the air before it enters your home. If the filter is filled with dirt and debris, it will restrict airflow and cause your AC unit to work harder and make more noise. If your air conditioner makes a loud, rattling sound, it’s probably because the filter is dirty.

2. Worn Fan Blades:

If your AC unit is making a grinding or squealing noise, it could be because the fan blades are worn out or damaged. Over time, fan blades can become bent or unbalanced, which will cause them to hit other parts of the AC unit and make noise. If the blades are severely damaged, they may need to be replaced.

3. Loose Parts:

If your air conditioner is making a rattling noise, it could be because of loose parts inside the unit. This is usually caused by a screw or bolt that has come loose and is hitting something else inside the AC unit. If the noise comes from inside the unit, you’ll need to open it up and check for any loose parts. Once you find the loose part, tighten it with a wrench or screwdriver. If there are any other loose parts in the unit, tighten those down as well. Once everything is tightened down, the rattling noise should stop.

Loose Parts Inside the Unit

4. Clogged Drain Line:

If your air conditioner is making a gurgling noise, it could be because the drain line is clogged. The drain line carries away all the water that condenses on the evaporator coils. If the drain line is clogged, the water will back up into the unit and make a gurgling noise. To clear a clogged drain line, you’ll need to disconnect the drain line from the air conditioner and use a wet/dry vac to suck out the debris. You can also flush the line with a hose to clear it.

5. Dirty Evaporator Coils:

The evaporator coils are located inside the air conditioner unit. These coils are responsible for absorbing heat from the air. If the coils are dirty, they won’t be able to absorb heat as well, and the AC unit will have to work harder to cool your home. If you want to make your air conditioner quieter, you should clean the evaporator coils at least once a year.

You can clean the coils yourself with a brush or by vacuuming them. You can also hire a professional to do it for you. Either way, ensuring clean coils will help your AC unit run more efficiently and quietly.

6. Worn Bearing:

If your air conditioner is making a grinding noise, it could be because the blower motor is worn out. The blower motor is responsible for circulating air through the AC unit. If the bearings in the motor are worn out, they will make a grinding noise. To fix this problem, you’ll need to replace the blower motor.

Blower Motor is Worn Out

8 Effective Ways on How to Make Air Conditioner Quieter

1. Check the Air Filter

One of the simplest and most effective ways to make an air conditioner quieter is to check the air filter. A dirty air filter can restrict airflow and cause the air conditioner to work harder, leading to increased noise. Additionally, a dirty air filter can cause the air conditioner to freeze up, leading to increased noise.

2. Clean the Condenser Coils

Another way to reduce noise from an air conditioner is to clean the condenser coils. Dirty condenser coils can cause the air conditioner to work harder, increasing noise. To clean the coils, turn off the power to the air conditioner and remove the front panel. Next, use a brush or vacuum attachment to remove dirt and debris from the coils. Be sure to clean both the inside and outside of the coils.

3. Check for Loose Parts

If there are loose parts on your air conditioner, this could cause noise. Check for any loose screws or bolts and tighten them up. You may also want to check the fan blades to see if they are unbalanced. If they are, you can try balancing them yourself or call a professional to do it for you. If the noise is coming from the compressor, it may be due to a loose fan belt. In this case, you will need to call a professional to fix it.

Loose Parts on Your Air Conditioner

4. Lubricate Moving Parts

Another way to reduce noise from an air conditioner is to lubricate all of the moving parts. Over time, moving parts can become dry and create friction, leading to increased noise.

Lubricating these parts will help to reduce friction and therefore reduce noise. If your air conditioner has many moving parts, it is best to hire a professional to do this for you. However, if you are comfortable doing it yourself, you can lubricate the moving parts with a non-drying lubricant, such as WD-40.

5. Replace Worn Parts

If your air conditioner is starting to make more noise than it did when it was new, it may be time to replace some of the worn parts. Commonly replaced parts include fan blades, motors, and bearings. Replacing these parts can help to reduce noise and extend the life of your air conditioner. If the noise comes from the compressor, it may be necessary to replace the entire unit.

6. Add Soundproofing Material

If your air conditioner is located in a room that echoes, this can make the noise seem louder than it actually is. To reduce noise from an air conditioner, you can add soundproofing material to the room. This will help absorb some noise and make the room quieter overall.

You can purchase soundproofing material from most home improvement stores. Various types of materials are available, so you can choose one that best suits your needs. Once you have the material, install it around the air conditioner. This will help reduce noise and make the air conditioner quieter.

7. Insulate the Air Conditioner

Another way to reduce noise from an air conditioner is to insulate it. There are various ways to insulate an air conditioner, such as using foam insulation or blankets. By insulating the air conditioner, you will help to reduce the amount of noise that escapes from it. If your air conditioner is located in an area where it is difficult to insulate, you may want to consider using soundproofing material.

8. Place on a Firm Surface

If your air conditioner is not properly supported, it can vibrate and create more noise than necessary. Ensure your air conditioner is placed on a firm surface, such as a concrete pad or wooden platform, to reduce vibration and noise. Additionally, you may want to consider placing anti-vibration pads under your air conditioner to reduce noise further.

Ensure Your Air Conditioner is Placed on a Firm Surface

Tips For Reducing Air Conditioner Noise

  1. Check the fan blades for dirt or debris and clean them if necessary.
  2. Ensure the unit is level – an unlevel unit can cause vibrations that amplify noise.
  3. Inspect the ductwork for leaks and seal any gaps with mastic sealant or metal tape.
  4. Install acoustic insulation around the air conditioner to help deaden sound.
  5. Position the air conditioner away from windows, doors, and other noise-sensitive areas.
  6. Consider installing a sound blanket or sound baffle around the unit to reduce noise further.
  7. If the compressor is creating noise, consult a professional to see if it needs to be replaced.

With these tips, you can help make your air conditioner quieter and enjoy a more peaceful home environment.

How Can I Make My AC Fan Motor Quieter?

You can try a few things to make your AC fan motor quieter. One option is to add more insulation around the unit. This will help to reduce the noise that is coming from the motor. Another option is to change the settings on the unit so that it runs at a lower speed. This will also help reduce the noise coming from the motor.

Finally, you can try to purchase a new AC unit that is designed to be quieter than your current unit. You may need to replace the unit if you cannot make your AC fan motor quieter with any of these methods. If you have an older AC unit, the noise is likely coming from the bearings. These can be replaced with new bearings that are designed to be quieter.

Final Words

Making your air conditioner quieter means soundproofing the surrounding area or using a noise-canceling machine. If you’re still having trouble following these tips, or if your unit is particularly old or noisy, it may be time to invest in a new one. 

By following these steps on how to make air conditioner quieter, you can make your air conditioner much quieter and more comfortable. Do you have any other tips on making AC units quiet? Share your tips in the comments below!

Photo of author

Rick Kelly

Rick is a handyman who grew up helping his dad with his business. He learned a lot from him about how to fix things, and also about how to work hard and take care of business. These days, Rick is still into fixing things- only now, he's doing it for a living. Rick is always looking for new ways to help people grow and develop. That's why he started contributing to this blog: to share all his experience and knowledge so that he can help people who are interested in DIY repair.

Leave a Comment