[2023] Is there a way to make a window air conditioner quieter?

Are you tired of the constant noise coming from your window air conditioner? Do you find it difficult to concentrate or sleep with the loud humming and rattling? If so, you’re not alone. Many people struggle with noisy window air conditioners, but the good news is that there are ways to make them quieter. In this article, we will explore various methods and techniques to help you achieve a quieter and more comfortable environment. So, let’s dive in!

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Quick Answer

If you’re looking for a quick answer, here it is: yes, there are several ways to make a window air conditioner quieter. From insulating the unit to reducing vibrations and keeping it clean, there are various techniques you can try to minimize the noise. Let’s explore these methods in more detail.

Quick Tips and Facts

Before we delve into the details, here are some quick tips and facts to keep in mind:

  • Window air conditioners are inherently noisy: Window air conditioners are known for their noise, as they consist of a compressor, fan, and other moving parts. However, some models are designed to be quieter than others, so it’s worth considering noise levels when purchasing a new unit.
  • Noise levels are measured in decibels (dB): The higher the decibel level, the louder the noise. Quieter window air conditioners typically have noise levels between 50-60 dB, while louder ones can reach up to 70 dB or more.
  • Proper maintenance can help reduce noise: Regular cleaning and maintenance of your air conditioner can help prevent noise issues and ensure optimal performance. We’ll discuss maintenance tips later in this article.

Now that we have covered the basics, let’s explore the different methods to make your window air conditioner quieter.


Window air conditioners have been a popular choice for cooling individual rooms or small spaces for decades. They are affordable, easy to install, and provide effective cooling. However, one common drawback is the noise they produce. The noise can be attributed to various factors, including the compressor, fan, and vibrations caused by the unit’s operation.

In recent years, manufacturers have made efforts to reduce the noise levels of window air conditioners. Some models now come with noise-reducing features such as insulated cabinets, quieter compressors, and improved fan designs. However, if you already have a noisy window air conditioner or prefer not to invest in a new one, there are still steps you can take to make it quieter.

Mind the Gap

One of the main sources of noise in a window air conditioner is the gap between the unit and the window frame. This gap allows outside noise to enter the room and can also cause vibrations and rattling sounds. Here are some steps you can take to minimize this gap and reduce noise:

  1. Foam insulation: Use foam insulation strips or weatherstripping to fill the gap between the unit and the window frame. This will not only reduce noise but also improve energy efficiency by preventing drafts. Make sure to measure the gap accurately and choose the appropriate size of insulation strips.

  2. Window seal kits: Consider using a window seal kit specifically designed for window air conditioners. These kits typically include foam insulation panels that can be cut to fit the window opening. They provide a tight seal around the unit, reducing noise and improving insulation.

  3. Window film: Another option is to apply window film to the glass around the air conditioner. Window film can help reduce noise by blocking outside sounds and vibrations. Choose a film that is specifically designed for noise reduction and follow the manufacturer’s instructions for installation.

By addressing the gap between the unit and the window frame, you can significantly reduce noise and create a more peaceful environment.

Insulate or Replace

In addition to minding the gap, proper insulation is crucial for reducing noise from a window air conditioner. Insulation helps absorb sound waves and prevents them from entering the room. Here are some insulation options to consider:

  1. Foam strips: Insulate the outer rim of the air conditioner with foam strips. These strips act as a barrier, reducing noise transmission and preventing vibrations. Make sure to choose high-quality foam strips that are specifically designed for air conditioner insulation.

  2. Window curtains or blinds: Hanging heavy curtains or installing blinds can help absorb sound and reduce noise levels. Choose curtains or blinds made of thick, dense fabric that can effectively block sound waves. Additionally, opt for curtains that reach the floor to create a seal and minimize noise leakage.

  3. Acoustic panels: For a more advanced solution, consider installing acoustic panels on the walls near the air conditioner. Acoustic panels are designed to absorb sound and reduce echo, creating a quieter environment. They come in various sizes and designs, allowing you to choose an option that complements your room decor.

If your window air conditioner is old or particularly noisy, you may want to consider replacing it with a newer, quieter model. Look for models that are specifically marketed as “quiet” or “low-noise” and check the decibel rating to ensure a quieter operation. Additionally, consider models with features such as insulated cabinets, variable fan speeds, and advanced noise reduction technology.

Get a Sound Blanket

A sound blanket, also known as a compressor blanket or noise-reducing cover, is a specially designed cover that wraps around the air conditioner compressor. It helps reduce noise by absorbing sound waves and preventing them from escaping. Here’s how a sound blanket can help make your window air conditioner quieter:

  • Reduces compressor noise: The compressor is one of the main sources of noise in a window air conditioner. By wrapping a sound blanket around the compressor, you can significantly reduce the noise it produces.

  • Maintains efficiency: Sound blankets are designed to reduce noise without compromising the efficiency of the air conditioner. They allow proper airflow and ventilation, ensuring optimal cooling performance.

When purchasing a sound blanket, make sure to choose one that is compatible with your specific air conditioner model. Follow the manufacturer’s instructions for installation to ensure proper fit and functionality.

Keep It Clean

Regular cleaning and maintenance of your window air conditioner are essential for optimal performance and noise reduction. Dust, dirt, and debris can accumulate on the unit’s components, causing it to work harder and produce more noise. Here are some cleaning tips to keep your air conditioner running smoothly and quietly:

  1. Clean the filter: The filter is responsible for trapping dust and other particles from the air. Over time, the filter can become clogged, reducing airflow and increasing noise levels. Clean or replace the filter regularly according to the manufacturer’s instructions.

  2. Clean the external coils: The external coils of the air conditioner can accumulate dirt and debris, affecting its efficiency and noise levels. Use a soft brush or vacuum cleaner to remove any dirt or debris from the coils. Be gentle to avoid damaging the fins.

  3. Clean the vents: Dust and debris can also accumulate on the vents, obstructing airflow and causing noise issues. Use a soft brush or cloth to clean the vents and ensure proper airflow.

  4. Clean the compressor unit: The compressor unit, located outside the room, can also contribute to noise if it is dirty or clogged. Remove any debris or obstructions from the compressor unit and ensure proper ventilation.

Regular cleaning and maintenance will not only reduce noise but also extend the lifespan of your window air conditioner.

Maintaining Your Air Conditioner

To ensure optimal performance and noise reduction, here are some additional tips for maintaining your window air conditioner:

  • Schedule professional maintenance: Consider scheduling regular maintenance with a professional HVAC technician. They can inspect your air conditioner, clean the internal components, and identify any potential issues that may be causing noise.

  • Check for loose parts: Over time, the vibrations from the air conditioner’s operation can loosen screws, bolts, and other parts. Regularly check for any loose parts and tighten them as necessary to reduce noise.

  • Keep the area around the unit clear: Ensure that there are no obstructions around the air conditioner, both inside and outside. Clear any debris, furniture, or other objects that may impede airflow or cause vibrations.

  • Use a surge protector: Power surges can damage the air conditioner’s components and lead to increased noise levels. Protect your unit by using a surge protector to prevent electrical damage.

By following these maintenance tips, you can keep your window air conditioner running quietly and efficiently.


Old man reading

How do you reduce the noise in a window air conditioner?

Reducing noise in a window air conditioner can be achieved through various methods, including:

  • Insulating the unit and filling gaps with foam strips or weatherstripping.
  • Installing a sound blanket around the compressor.
  • Keeping the unit clean and well-maintained.
  • Considering a quieter model when purchasing a new air conditioner.

Read more about “… What is the quiet decibel level for a window air conditioner?”

Why is my window unit air conditioner so loud?

Window unit air conditioners can be loud due to several factors, including:

  • Vibrations caused by the unit’s operation.
  • Gaps between the unit and the window frame.
  • Dirty or clogged components.
  • Worn-out or damaged parts.

Why is my air conditioner so loud inside?

If your air conditioner is loud inside, it could be due to:

  • Poor insulation around the unit.
  • Vibrations caused by loose parts or improper installation.
  • Dirty or clogged components.
  • A malfunctioning fan or compressor.

Do they make a quiet window air conditioner?

Yes, manufacturers now offer quieter window air conditioner models that are specifically designed to minimize noise. These models often feature insulated cabinets, quieter compressors, and advanced noise reduction technology. When purchasing a new air conditioner, look for models marketed as “quiet” or “low-noise” and check the decibel rating for quieter operation.

Read more about “… Midea U-Shaped Air Conditioner: The Coolest Innovation in Cooling”


In conclusion, there are several ways to make a window air conditioner quieter. By addressing gaps, insulating the unit, using a sound blanket, and keeping it clean, you can significantly reduce noise levels and create a more comfortable environment. Regular maintenance and considering a quieter model when purchasing a new air conditioner are also important factors to consider. Remember, a quieter air conditioner can make a big difference in your comfort and well-being.

For more information on noise reduction and other related topics, check out the following articles on Quietest™:

And if you’re curious about the quiet decibel level for a window air conditioner, be sure to read our related article: What is the quiet decibel level for a window air conditioner?

If you’re interested in further reading, here are some books on Amazon that may be helpful:

We hope these tips and techniques help you achieve a quieter and more comfortable environment with your window air conditioner. Remember, a little effort can go a long way in reducing noise and enhancing your overall well-being. Stay cool and enjoy the peace and quiet!

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