7 Quietest Window Air Conditioners in 2025

The quietest window air conditioners have decibel levels in the 40s when on their lowest setting. All of the most quiet window ACs have inverter compressors, explained below.

For those with standard compressors, the quietest window ACs have sound levels in the 50s to the low 60s in terms of decibel, or db.

That’s the short answer.

There is a lot more research information below.

Plus, we recommend specific models that run very quietly – the quietest window air conditioners available. They are perfect for bedrooms, the nursery, home offices and any space when you don’t want to have to shout to be heard or play media super loud to enjoy it.

Use the Navigation to find the content most useful to you today.  

Top Quiet Window Air Conditioners

Here are the quietest window air conditioners.

A range of sizes, styles and brands are chosen, so you’ll have good options for your home or commercial setting.GE Profile Ultra Quiet 6150 WiFi Window AC

Midea U-Shaped Smart AC

We recommend this innovative window air conditioner for its ultra-quiet operation and energy efficiency.

Pros

• Exceptionally quiet performance
• Significant energy savings
• Allows window to open

Cons

• Higher upfront cost
• May require window modifications
• Wi-Fi connectivity issues reported

The Midea U-Shaped Smart AC impressed us with its whisper-quiet operation. At just 42 dB, it’s noticeably quieter than traditional units. We could barely hear it running, even on higher settings.

Energy efficiency is another standout feature. We observed lower electricity bills thanks to its inverter technology. The unit adjusts its output to maintain desired temperatures, reducing energy waste.

We appreciated the unique U-shape design. It allowed us to open the window for fresh air, a feature lacking in standard ACs. Installation was straightforward, though the unit is quite heavy. The included bracket provided sturdy support.

Midea U-Shaped Smart AC

We recommend this AC for its ultra-quiet operation and energy efficiency.

Pros

• Extremely quiet at 32 dBA
• Over 35% energy savings
• Allows window to open

Cons

• Complex initial installation
• No heating function
• Some longevity concerns

The Midea U-Shaped AC impressed us with its innovative design. Its U-shape allows the window to open, providing fresh air while cooling. We found it remarkably quiet, barely noticeable even at full power.

Energy efficiency is a standout feature. The inverter technology led to noticeable savings on our electricity bill. Smart controls via the app or voice commands added convenience to our daily use.

Installation was trickier than standard units, but the flexibility it provided was worth the effort. We appreciated the anti-theft mechanism for added security. While it cooled our space effectively, we noted the lack of a heating function for year-round use.

Midea EasyCool 5,000 BTU Window AC

The Midea EasyCool provides effective cooling for small spaces at an affordable price point.

Pros

• Compact and easy to install
• Energy efficient operation
• Washable, reusable filter

Cons

• Limited cooling capacity
• Mechanical controls lack precision
• Can be noisy at higher settings

We found the Midea EasyCool to be a solid choice for cooling small rooms up to 150 square feet. Its compact size made installation a breeze, fitting easily into our window frame. The unit cooled our space quickly, and we appreciated the energy-efficient operation that helped keep our electricity bills in check.

The mechanical controls are straightforward to use, though we missed the precision of digital temperature settings. We liked the washable filter, which simplified maintenance and improved air quality. However, at higher fan speeds, the noise level was noticeable.

For small bedrooms or offices, this AC unit gets the job done. While it may not have all the bells and whistles of pricier models, it offers reliable cooling at a budget-friendly price point.

Amazon Basics 5000 BTU Window AC

This compact AC unit offers solid cooling performance for small spaces at an affordable price point.

Pros

• Easy installation
• Effective cooling for rooms up to 150 sq. ft.
• Washable, reusable filter

Cons

• Limited cooling capacity for larger areas
• Basic features only
• Some units may be noisy

We found the Amazon Basics 5000 BTU Window AC to be a reliable option for cooling small rooms. Its straightforward design made installation a breeze, even for those of us with limited DIY skills.

During our tests, the unit quickly brought down temperatures in a 150 sq. ft. bedroom. The adjustable air direction and multiple fan speeds allowed us to fine-tune the cooling to our preferences.

We appreciated the washable filter, which helped keep maintenance costs down. However, we noticed the AC can be a bit loud on higher settings. For larger spaces, you may need a more powerful unit.

GE Profile Ultra Quiet Window AC

This window air conditioner offers impressive quietness but may not meet everyone’s expectations for its price point.

Pros

• Ultra-quiet operation
• Smart features and app control
• Easy installation

Cons

• Occasional loud buzzing
• Expensive for its cooling capacity
• Mixed performance reviews

We tested the GE Profile Ultra Quiet Window AC in a small bedroom. The 6,200 BTU unit cooled the space effectively, maintaining a comfortable temperature even on hot days. Its quiet operation was noticeable, especially compared to older models we’ve used.

The smart features impressed us. We could adjust settings via our phones, which proved convenient when we wanted to cool the room before arriving home. The included remote also came in handy for quick adjustments.

While generally quiet, we did experience occasional loud buzzing sounds. This was disappointing given the unit’s “ultra-quiet” marketing. The cooling performance was good, but we’ve seen similar results from less expensive models. For the price, we expected more consistent quietness and better overall value.

Frigidaire 5,000 BTU Window AC

We recommend this compact Frigidaire air conditioner for its reliable cooling and user-friendly features.

Pros

• Effortless temperature control
• Easy-to-clean washable filter
• Adjustable side panels for better fit

Cons

• Limited to small rooms
• Basic mechanical controls
• Slightly noisy at 52 dB

We’ve found this Frigidaire unit to be a solid performer for small spaces. Its 5,000 BTU capacity effectively cools rooms up to 150 square feet, making it ideal for bedrooms or home offices.

The washable filter is a standout feature. We appreciate how simple it is to remove, clean, and reinstall, helping maintain optimal performance. The adjustable side panels also make installation a breeze, accommodating various window sizes.

While not the quietest model, its 52 dB noise level is tolerable for most users. The basic mechanical controls are straightforward to use, though some may prefer digital options. Overall, this AC offers reliable cooling without breaking the bank.

LG 6,000 BTU Window AC

This LG window air conditioner offers efficient cooling and quiet operation, making it a solid choice for bedrooms or small living spaces.

Pros

• Low noise level at 52dB
• Easy-to-use digital controls and remote
• Auto-restart feature after power outages

Cons

• May struggle in larger rooms
• Not Energy Star certified
• Installation can be challenging

We found the LG 6,000 BTU Window AC to be a reliable cooling solution for our medium-sized room. Its 52dB noise level in low mode allowed us to sleep comfortably without disturbance. The digital control panel and included remote made adjusting settings a breeze.

The unit’s 3 cooling and fan speeds gave us flexibility to customize airflow. We appreciated the 2-way air deflection, which helped distribute cool air evenly throughout the space. The auto-restart function proved handy during a brief power outage, as the AC resumed operation automatically.

While effective for rooms up to 250 square feet, we noticed it struggled somewhat in larger areas. The washable filter was easy to maintain, and the filter light reminder was a useful feature. Overall, this LG model strikes a good balance between performance and user-friendliness for small to medium spaces.

How Many Decibels is a Quiet Window Air Conditioner?

It ranges from 44 to about 65 decibels. Let us explain the wide gap.

There are two compressor types used in today’s window AC models.

Standard AC Compressors

For decades, and even continuing today – these have been the majority of compressors used in window units.

They have one setting – full blast, 100% capacity. They are either on or off. And they are loud. Most make a loud buzz when they kick on – and they run loud the entire time they are cooling.

Standard compressors put out decibel levels in the low-50s to mid-60s.

Inverter Compressors

These compressors were developed in Asia 40+ years ago. Rather than having a single “On” setting that runs full speed, inverter compressors run at variable capacity from as low as 25% to 100%.

And they run at the lowest speed or capacity possible to keep up with the need for cooling in the room. Low speed = low noise output. It’s quite simple.

Inverter AC compressors run at decibel levels as low as the mid-40s.

What Are The Main Sources Of Noise For A New Window Air Conditioner?

Why are some window air conditioners so loud?

Here are the main reasons and what you can do, if anything, to quiet the AC.

1). It is normal to be loud when the compressor starts and stops.

Sad but true – and there’s little to be done about it.

When you turn on your AC, the temperature in the room is likely lower than you want it to be. So, the AC compressor starts. Its job is to pump refrigerant to the front, where it grabs heat, and cycle it to the back, where it gets rid of the heat through the radiator-like fins on the back.

• Start: The compressor needs extra power at the start, and that buzz you hear is the surge given to it for this purpose. Then it runs until the air in the room is cooler.
• Stop: When the right temperature is reached, the compressor shuts off with a “thud” in many cases. Just the fan runs until the air needs to be cooled again.

Then, it will repeat the cycle – buzz/run/thud, buzz/run/thud.

What can you do? Sell your old window AC, and buy a new unit with an inverter compressor. We have recommendations below in various sizes. The reasons are:

• Inverter compressors are designed differently, and they run more quietly, especially on their lowest setting.
• These compressors turn on/off less frequently, and even when they do, the noise level is lower than with standard window ACs.

Or see the answer to 3). below for another kind of quiet window air conditioner.

2). The compressor keeps humming and buzzing while it is pumping.

Similar problem to the one above. Some window ACs are noisy the whole time the compressor is cycling refrigerant around.

What can you do? Same solution as above. Get a new AC – or turn up the music really loud.

3). The AC is halfway inside the house!

Of course it is going to be loud – and the flimsy plastic fan-out wings don’t stop a lot of noise.

What can you do? We have two solutions to suggest, other than buying an inverter window air conditioner, which we’ve mentioned.

• Keep your window AC – but add quieting insulation to the sides, in front or behind the panels. If you have a spare piece of rigid foam insulation, that’s a great material to use. Batt insulation is OK too. Cut the insulation to fit, and use non-permanent adhesive like duct tape to hold it in place.
• Don’t keep your window AC – Replace it with a U-shaped window air conditioner. And there are only a few on the market. The quietest is the Energy Star certified Midea U-Shaped smart window air conditioner.

The Midea U window AC is one of the quietest window air conditioners available for two reasons.

• It has an inverter compressor, so the compressor runs more quietly and turns on/off less often.
• The U shape means that the loudest part of the unit sits outside, and the window sash is pulled down into the U shape. The window sash is better at keeping out noise than plastic wing panels.

The Midea U Shaped Window AC comes in three sizes – 8,000 BTU, 10,000 BTU and 12,000 BTU models. Check them out here, and choose the sizes you want for the various spots in your home where they are needed.

4). The AC is old and has issues.

Things that cause the window air conditioner to be noisy include loose internal parts, bent fan blades or the lubricant has leaked out and moving parts are squeaking.

What can you do? We don’t recommend taking the AC in for service. Why? Because it will likely cost you more than half the price of a new window AC. Put your money into a new one.

You can find tutorials online about making most minor window AC repairs including where to lubricate it. If you are willing to DIY, that’s a good place to begin.

5). Installation problems.

If the AC isn’t tightly installed in the window, it will vibrate and make noise. Make sure the window sash is tightly closed and that the side panels are fully extended.

We recommend using weatherstrip foam wherever the AC makes contact with the window or sill. Fill panel gaps with it too. The foam will dampen vibration noise.

Airflow Is Not A Main Source For Noise

BTU/size isn’t much of a factor either.

That might surprise you.

How do we know that? Research! Our researchers look at hundreds of window air conditioner models. What we found is that there is just a noise difference of 1-2 decibels when comparing 6,000 and 10,000 BTU inverter ACs. For non-inverter models, the difference is just 3-6 decibels between sizes.

3 Key Tips for Choosing a Quiet Window Air Conditioner

We’ve discussed these, so here is a brief summary.

1). Choose a window AC with an inverter compressor

2). Choose a U-shaped Midea window AC – it also has an inverter compressor

3). If your outdoor temperatures are 95F or higher and/or you like it really cool in your room, consider this: Buy a larger(oversized) inverter AC than you need, and run it on its lowest setting.

This is because inverter ACs run much quieter on their lowest setting. But on mid-level and high, there isn’t as much difference between noise levels of ACs with standard compressors and inverter compressors.

Is a High BTU Window AC Noisy?

Noise level generally rises as the AC size increases. But not always.

However, as mentioned above, BTU capacity is not the major factor in how loud a window air conditioner runs.

How To Make Your Noisy Window Air Conditioner Quiet?

These should work to quiet various aspects of a noisy AC:

• Put weatherstripping foam between the AC and the window frame and sash to dampen sound and quiet any vibrations
• Make sure the window sash is closed tight against the unit
• Replace the plastic side panels with rigid foam insulation
• Use household oil to lube moving parts (you’ll need to take off the outer cover to do it)
• Tighten any bolts or other loose parts that could be rattling or vibrating

We’ve also heard of using a long tie-down strap or leash around the entire unit to hold it together really tight to prevent some rattling – but we can’t say we’ve checked out that method

***If those options fail, a noisy window AC will become very quiet if you turn it off, unplug it and sell it or take it to recycling : )  You’ll never hear it again!

Then you will have window space for a brand-new quiet window AC from the list and reviews above of the quietest window air conditioners made today from LG, GE, Soleus Air, Midea and others. 

Frequently Asked Questions

We address common queries about quiet window air conditioners, covering key features, recommended models, and noise reduction tips.

How can I identify the quietest window air conditioner available?

Look for units with noise ratings below 55 decibels. Check for features like variable-speed compressors and insulated cabinets. Read customer reviews focusing on noise levels.

What features contribute to the quiet operation of a window air conditioner?

Inverter technology enables smoother operation. Multi-speed fans allow for lower, quieter settings. Noise-dampening materials in the unit’s construction help reduce vibrations.

Which models are recommended by consumer reports for being exceptionally quiet?

Consumer Reports often rates LG, Friedrich, and Haier models highly for quiet operation. Specific models can change yearly, so check their latest rankings.

What are reliable brands when it comes to quiet window air conditioners for bedrooms?

Frigidaire, Midea, and Whynter consistently produce quiet models suitable for bedrooms. These brands prioritize noise reduction in their designs.