Finding a quiet window mounted air conditioner can be a challenge. Mainly since the noisy components, the compressor and fan, are located directly inside the packaged unit.
Since the compressor is located in the unit and not outside away from the home some degree of noise will always be present.
With that said there are some window air conditioners that have less noisy compressors than others.
The best way to judge how noisy a window air conditioners will be, is to read real reviews from real people online.
Keep in mind to get a truly quiet unit there are other ways that are affordable such as mini split systems which separate the compressor outside and then feed lines into a home that circulates refrigerant to a blower motor. Split systems require more effort and skill to set up but are not as expensive as traditional central air conditioning systems used in homes.
Here are the top units we have found that make the least amount of noise.
As always be sure to read reviews on Amazon, forums, or elsewhere to be sure a unit is the right pick for you.
Our Picks for Best Quiet Window Mounted Air Conditioners
- Haier Serenity Series
- Emerson EARC6RE1 Quiet Kool
- LG LW8016ER
- Friedrich CP10G10B
- Frigidaire FFRE2533S2
Haier Serenity Series 6,000 BTU 115V Window Air Conditioner with Ultra Quiet Sound Package
Haier is known for making quiet heating and cooling units.
This unit is a 6000 BTU, 115 Volt unit and uses what is called Cross Flow technology to keep the fan noise level down.
The Haier company also wraps the compressor in a noise suppressant blanket that quiets it down.
The compressor on any HVAC unit often makes the most noise and can be heard kicking on and off as it cycles. Having this component wrapped goes a long way in making a unit run quieter.
The cross flow fan technology also makes the fan run smother and make less noise than conventional fans.
A window unit will always make some noise but this may be the quietest unit available currently.
Emerson EARC6RE1 Quiet Kool 6,000 Btu 115V Window Air Conditioner
Emerson has a new window A/C unit called the Quiet Kool EARC6RE1.
It is built for easy installation, LED display, three speeds and a remote control.
Emerson is a well known company with good warranties including 1 year parts and labor, 2 years parts and 5 years on the compressor.
6, 000 BTU is rated to cool a room from 150 to 250 square feet.
LG LW8016ER 8,000 BTU 115V Window-Mounted AIR Conditioner with Remote Control
LG makes many good window A/C units including the 8,000 BTU LW8016ER.
While it may not be the quietest on our list when mounted correctly it operates much quieter when compared to many other units.
One of the things that make it have less noise is it has a rotary compressor which is quieter and more economical to operate.
It is 115 Volt unit that is rated to cool 340 square feet of space.
When it comes to price, along with a well built unit that is much quieter when compared to many other models the LG LW8016ER is worth a look.
Friedrich Chill CP06G10B 6000 BTU Window Air Conditioner
Friedrich Chill also makes many good units including the model CP06G10B.
It comes with a nice remote control that makes it easy to change the setting from a distance.
The unit has 3 cooling speeds, 3 fan speeds, auto-cool, energy saver mode and programmable 24-hour on/off timer.
The 6,000 BTU unit is rated to cool a space roughly 250 square feet depending how hot it is, and how well insulated the room is.
When set to high cooling it does make noise and works best at lower settings for a more quieter unit.
While not the quietest when comparing price vs. overall build, it may be a good option for a budget minded person looking for a good unit.
Frigidaire 25,000 BTU 230V Window-Mounted Heavy-Duty Air Conditioner with Temperature Sensing Remote Control
The Frigidaire FFRE2533S2 is also a quiet A/C unit. One of the reasons why is its a 220 Volt unit which allows the compressor to run more efficiently.
220 Volts is not common in every room and are mainly used for a electric dryers and electric water heaters. Running a 220 Volt outlet to a room is not difficult but if this is a problem than it will be better to look at other units that use the standard 115 Volts.
Keystone 5,000 BTU 115V Window-Mounted Air Conditioner with Follow Me LCD Remote Control
The Keystone Window Air Conditioner unit is a 5000 BTU, 115 Volt unit. It has a three speed fan which can be turned to low for the quietest setting.
It has a rated indoor noise Level of High at 55 dBA, Medium 52 dBA, and Low at 49 dBA.
One of the reasons it is quieter is its a smaller unit able to cool a space up-to 150 square feet.
The small size and package gives it a lower cost but also less cooling power that may be needed in a large room.
While this A/C unit may not be the quietest on the list it is a popular window A/C package that makes less noise than many others.
Best Quiet Window Mounted Air Conditioners Comparison Table
|Name / Amazon Link||Noise Level||BTU||Room Size|
|Haier Serenity Series||43.4 dB||6,000||250 Sq. Ft|
|Emerson EARC6RE1 Quiet Kool||55 dB||6,000||250 Sq. Ft|
|LG LW8016ER||52 dB||8,000||340 Sq. Ft|
|Friedrich CP10G10B||54 dB||10,000||450 Sq. Ft|
|Frigidaire FFRE2533S2||55 dB||25,000||1,600 Sq. Ft|
What Size Quiet Window Air Conditioner Will You Need?
Air conditioners are rated by BTU (British Thermal Units) for how much cooling power they have.
The BTU’s a unit puts out can be matched with the square feet of a room.
A chart can then be looked at to see what sized unit would work best for you.
Once the square feet of a space is known it can be matched to an HVAC sizing chart.
BTU Sizing Chart for AC Units
|Area Size Sq Ft||BTU's Needed|
|150 to 250 Sq Ft||6,000 BTUs|
|250 to 300 Sq Ft||7,000 BTUs|
|300 to 350||8,000 BTUs|
|350 to 400 Sq Ft||9,000 BTUs|
|400 to 450 Sq Ft||10,000 BTUs|
|450 to 550 Sq Ft||12,000 BTUs|
|550 to 700 Sq Ft||14,000 BTUs|
|700 to 1,000 Sq Ft||18,000 BTUs|
|1,000 to 1,200 Sq Ft||21,000 BTUs|
|1,200 to 1,400 Sq Ft||23,000 BTUs|
|1,500 Sq Ft||24,000 BTUs|
Be sure to take into account how well a room is insulated as well as the climate.
Some climates are much hotter and may need a bigger unit to help keep a space cool.
Why Are Window Air Conditioners Noisy?
Window units come packed in a single case with all the working components built into it.
Since all the parts are built into a single case including the noisy parts some noise will always be heard.
Most standard home HVAC units are mounted outside on a roof or on the side of a home with air fed in through duct work.
This helps isolate the noise outside and keep the inside of a home much quieter.
There is also split system type HVAC units which separate the loud parts outside and keep the quiet components inside.
How To Find the Quietest Window A/C Unit
The quietest unit can be found by measuring the Decibels or dB noise levels it makes.
Decibels is measurement that is widely used to rate how loud something is.
For example the average conversation is usually around 45-50 dB while a train horn is around 150 dB which is very high on the noise level scale.
Most window A/C packages make between 40-60 dB with the lower numbers much quieter.
When looking for the unit that makes the least amount of noise finding one that makes less than 50 decibels would be best.
How Long will a Window Air Conditioner Last?
Window air conditioners usually last between 5-10 years depending on usage.
How long a unit last, will depend on how much it is used as well as the climate.
A very hot climate such as the American southwest will make the unit work much harder compared to a unit in more moderate weather.
Also, build quality and installation can be a big factor how a unit wear over time.
Installing a unit that is held in place with brackets and level will not ware out components as fast as a badly installed unit.
Most window air conditioners will be ready to be replaced after 5 years of moderate to heavy use.
Window A/C units are not usually built to be the quietest since they are budget oriented equipment meant to fill a gap in a cooling system.
How a unit is mounted can make a big difference in noise levels with it needing to be level and on a sturdy platform
If the package is not level it will likely rattle more and cause more noise than it would otherwise.
How well a unit is installed can also make an impact on noise level along with other factors. Read here for some tips on how to help quiet down a noisy window air conditioning unit.
Doing basic maintenance on a unit can go a long way in helping it stay running the best it possibly can.
Basic care can also improve the life span of a unit which normally is up-to five years.
Things such as cleaning the air filter and keeping the outside air fins clean of debris can also make a unit run more smoother.
One of things I always recommend is looking at a mini split system since they are very quiet, low-cost to operate, and built to last.
Mini split systems are basically the same as a big home unit only on a smaller scale.
They are very quite and about as close to silent an HVAC system can be.
They are also perfect for the DIY type of person with many DIY kits available.
Of course they do require more skill to setup and require some basic construction skills such as using power tools and wiring.
Read Here to See More on Mini Split Systems
As always be sure to read the reviews on Amazon or elsewhere to be sure a unit is a good fit for you.