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Small Window Air Conditioner

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108

Models Considered

93

Hours of Research

4

Experts Interviewed

965

Consumer Reviews Analyzed

I f you live in a small apartment, you may already know how inconvenient it is to stay indoors for a long period of time. This is why we advise that you invest in an AC and make warm days spent indoors tolerable, even pleasant. If you seek a small-sized window AC, a quite appealing trait these types of systems boast is that they are more energy-efficient and quieter in operation when compared to their large-size counterparts.

We have handpicked the right models for you so you don’t have to go broke by trying to stay cool in the summer. In addition to this, they are very easy to understand so you don’t have to be a professional to know how to choose the settings. Similar to small portable air conditioners, they range in capacity and maximum area coverage, so you can pick one to suit your needs.

12. Frigidaire FFRE063WAE – Best with Air Purifier

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Specifications:


  • Cooling capacity: 6,000 BTUs
  • Room coverage: 250 square feet
  • Fan speeds: 3
  • Energy efficiency ratio: 12.1
  • Dehumidifying capacity: 1.3 pints per hour

  • Air direction control: 6-way
  • Noise level: 50 dB
  • For window size: 23” – 36” width
  • Dimensions: 15.5” x 13.2” x 18.5”
  • Warranty: 1 year , 5 years





Rated to produce 6,000 BTUs, it cools down up to 250 sq. ft. within minutes. It is even Energy Star certified, so it uses minimal energy when it runs, being rated at 12.1 EER for no considerable changes in the electricity bill to occur as of using it. To get the most for your money, it has been designed with numerous operating modes. Furthermore, it means that you will save money as you don’t have to invest in other appliances. Some of its highlights include:

  • Dehumidifying Capacity – It can withdraw up to 1.3 pints per hour.
  • Speeds – Choose between the 3 varying speeds for flexible cooling.
  • Air Flow – The louvers provide a 6-way air deflection.
  • Air Purification – Integrates a washable mesh filter that diminishes bacteria, odors, and other harmful particles so that you relish healthy and comfortable living conditions at all times.
  • Remote Control – Permits you to modify the settings pursuant to your needs from wherever you are in the room.

If you believe you are in need of filtration as air pollution seems to be an issue indoors, don’t solely rely on the AC to supply it but rather acquire and use an air purifier specifically for this task.



11. Haier ESAQ406T-H – Best for Bedroom

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Specifications:


  • Cooling capacity: 6,000 BTUs
  • Room coverage: 250 square feet
  • Fan speeds: 3
  • Energy efficiency ratio: 11.2
  • Dehumidifying capacity: 1.5 pints per hour

  • Air direction control: 4-way
  • Noise level: 43.4 dB
  • For window size: 26-1/6” – 39.25” width
  • Dimensions: 18.125” x 21.25” x 12.4”
  • Warranty: 1 year





It has been recently re-engineered with a smart internal mechanism that delivers a cool powerful air whilst producing low operational noise at a level that is equivalent to rain or shower water falling. It weighs 55 pounds, which is in fact much lighter than the other models that are currently on the market. Performance-wise, it suits rooms that measure up to 250 sq. ft.

As an alternative for installing an AC in the bedroom in case this isn’t the best solution in your case, you could opt for a bedroom ceiling fan to circulate the air and make ambient temperature feel tolerable. Inside of the package, you will receive a remote control that lets you maneuver it from afar.

Some of its highlights include:

  • Timer – It allows you to program it to start whenever you want.
  • Sleep setting – The air will change direction and its operational noise will be much lower.
  • Automatic Adjust – In case you want it to work at its fullest speed for a short duration, you can set it when to turn down the speed automatically without having to press anything.
  • Unique designHorizontal fan distributes the air more efficiently, minimizing drag and noise in the process.
  • Speeds3 settings to fit your specific needs regardless of what they are.
  • Modes – These are very useful when you want to have an energy-efficient operation or a silent mode.
  • Dehumidifier – It will act as a dehumidifier in addition to its AC service. Thus, you don’t have to worry about the humidity in the room.

For proper mounting, you need to attach the side curtain frames into your window. You do not have to call a professional to set it up as, even if you have no experience, you can still mount it perfectly. You also need to adapt the louvers as they guide the air into 4 different directions to ensure a comfortable temperature in all corners. When it comes to its stats, it measures 18.125” by 21.25” by 12.4” and it is suitable for windows that measure 26-1/6” up to 39-1/4” wide for proper installation.

Another reason why we are keen on it is the lifetime guarantee. This means that you don’t have to worry about additional costs in case it breaks down. As well as, it shows that the company stands strong with its product so you don’t have to worry about any damages or concerns. Finally, it is fully programmable, so you can make it work pursuant to your needs.


10. Friedrich Chill CP06G10B – Most Energy Efficient

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Specifications:


  • Cooling capacity: 6,000 BTUs
  • Room coverage: 250 square feet
  • Fan speeds: 3
  • Energy efficiency ratio: 12.2
  • Dehumidifying capacity: 1.8 pints per hour

  • Air direction control: 4-way
  • Noise level: ≅70 dB
  • For window size: 20.1” – 36” width
  • Dimensions: 13.8” x 18.5” x 20.6”
  • Warranty: 1 year , 5 years





Designed with a cooling ability of 6,000 BTUs, it will easily cool down up to 250 sq. ft. the low-profile, white design brings minimal attention to itself, so you will feel comfortable installing it wherever you wish. Furthermore, the Energy Star certification means that you don’t have to worry about your energy bill while it’s operating.

As aforementioned, it is energy-efficient, which is best seen in its 12.2 EER rating. Moreover, it utilizes a non-ozone depleting R-410A refrigerant that handles your needs without affecting the environment. Some of its highlights include:

  • Dehumidifying Capacity – Up to 1.8 pints per hour.
  • Auto Restart – In case of a blackout, it will automatically restart with the prior settings, when the power returns.
  • MoneySaver Mode – This function alternatively cycles between the compressor and the fan to preserve energy.
  • Operating Modes – It puts at your disposal the useful Fan-only mode that rotates the air to prevent room stuffiness, while the Cool mode brings down the room’s temperature within minutes.
  • EntryGard Protection – It is manufactured with steel retaining wire to secure the chassis to the sleeve. Hence, it prevents kick-in intrusions.
  • Slide-out Chassis – Slide it out from a window or wall for easy maintenance.
  • Auto Swing Louvers – The louvers automatically oscillate from left to right. You have the freedom to adjust the louvers up or down if you wish.
  • Side Curtains – The heavy-duty side curtains reduce the outside noise and light.

Use the push-button controls to adapt the settings to your demands. For example, you can raise and decrease the temperature, program the 24-hour timer in advance, choose between the modes, as well as the fan speeds.


9. Emerson Quiet Kool EARC5MD1 – Best for Small Room

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Specifications:


  • Cooling capacity: 5,000 BTUs
  • Room coverage: 150 square feet
  • Fan speeds: 2
  • Energy efficiency ratio: 11
  • Dehumidifying capacity: 1.3 pints per hour

  • Air direction control: 8-way
  • Noise level: 36 dB
  • For window size: 13” x 23”-36”
  • Dimensions: 15” x 16” x 12.5”
  • Warranty: 5 years





This model is quiet and efficient, producing a powerful 5,000 BTUs that make it cater to rooms that measure from 100 to 150 sq. ft. It has an easy-to-install design so you don’t have to call a professional to set it up. Additionally, it features 2 cooling speeds and 2 fan speeds with 8-way directing air louvers. You will be pleased to know that the rotary controls are comprehensive, so you don’t have to be an expert to know how to control it.

  • It is suitable for windows with a width of 23” to 36” and a height of 13”.
  • The dehumidifier function draws up to 1.3 points per hour for a more cozy environment.
  • Filter – The filter is cleanable, which means that you don’t have to worry about changing it every few months, saving on costs due to this aspect.
  • Installation – Inside of the package, you will receive a mounting installation kit at no extra price so that you can set it up by yourself.
  • Warranty – You can purchase in confidence as it is backed for free repairs for 5 years.

Unlike the majority of systems that are currently available, it has the ability to automatically turn on after a shortage. As well as, even though it has the capacity to cover a large area, it has a whisper-quiet functioning of only 36 decibels. Thus, you can allow it to operate throughout the day and night.


8. hOmeLabs 5000 BTU Window Conditioner – Best for RV

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Specifications:


  • Cooling capacity: 5,000 BTUs
  • Room coverage: 150 square feet
  • Fan speeds: 4
  • Energy efficiency ratio: 11.1
  • Dehumidifying capacity: N/A

  • Air direction control: 2-way
  • Noise level: 43 dB
  • For window size: 13” x 23”-36”
  • Dimensions: 16” x 12” x 15.4”
  • Warranty: 2 years





The 5,000 BTUs guarantee that it cools down an area of up to 150 sq. ft., which makes it usable for living rooms, RVs, and bedrooms. It is suitable for windows measuring from 23” to 36” wide that are at least 13” high. The backflow drainage prevents the water from dripping inside the house or in its housing. Some of its highlights include:

  • The 7 temperature controls for full operational customization.
  • The 2-way air guidance control that ensures it can cool down a small room within 15 minutes.
  • The washable antibacterial filter that is easy to clean.
  • The EER of 11.1 will allow you to use it throughout the day and night without worrying about operating costs.
  • Inside of the package you will find everything you need so that no extra purchases are needed, including a washable antibacterial filter, support brackets, leaf guards, window seal foam, and a handy installation guide.

The extra-long 6’ 3-prong power cord gives you enough freedom to position it on awkward-sized windows. Please bear in mind that it is preferable to connect it directly into the wall outlet rather than using extension cords.


7. Frigidaire FFRA0511R1E – Best for Apartment

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Specifications:


  • Cooling capacity: 5,000 BTUs
  • Room coverage: 150 square feet
  • Fan speeds: 2
  • Energy efficiency ratio: 11.1
  • Dehumidifying capacity: 1.1 pints per hour

  • Air direction control: 2-way
  • Noise level: 55 dB
  • For window size: 12” x 16”
  • Dimensions: 16” x 15.25” x 12”
  • Warranty: 1 year , 5 years





This 5,000 BTUs AC has the ability to cool down the living spaces fast. Best of all, you don’t have to invest further in the product due to the fact that it includes a window mounting kit. Furthermore, one of the main reasons why it is so popular all over the world is because it has an EER of 11.1, which means that your electricity bill will be up by only $41 per year.

It doesn’t only cool down a room as it can withdraw excess moistness from the air in the process as well. Some of its highlights include:

  • Dehumidifying Capacity – Up to 1.1 pints per hour.
  • Speeds – Adjust it with the 2 cool speeds and the 2 fan speeds.
  • Air Direction – The louvers provide a 2-way air direction.

It will not only cool down the room, but it will also clean the air of pollution, bacteria, and other harmful contaminants. The 6.5′ three-prong power cord ensures you won’t be in need of extensions to power it. Furthermore, the mechanical rotary controls enable you to change the settings with ease.


6. LG LW6017R – Best for the Money




Specifications:


  • Cooling capacity: 6,000 BTUs
  • Room coverage: 260 square feet
  • Fan speeds: 3
  • Energy efficiency ratio: 11.3
  • Dehumidifying capacity: 1.8 pints per hour

  • Air direction control: 2-way
  • Noise level: 52 dB
  • For window size: 21” – 35” width
  • Dimensions: 11.14” x 17.32” x 14.37”
  • Warranty: 1 year





Delivering a powerful cooling performance, this model has the ability to cool down a 260 sq. ft. room without affecting your energy bill. Hence, you can place it in the bedroom, small living spaces, and home offices. The cost-efficient operation makes it have an 11.3 EER rating. Moreover, the multiple energy-saving features make the AC operate in accordance with your needs.

To make things easier, inside of the package, you will find the installation kit. Hence, you will be able to set it up within minutes for windows measuring from 21” to 35”. Some of its highlights include:

  • Energy Saver Mode – Turns off when the compressor stops cooling. Then, every 3 minutes, the fun will turn on, check the conditions, and restart if cooling is needed.
  • Programmable Thermostat – Lets you set the temperature from 60°F to 80°F.
  • Dehumidifer – It can wick away up to 1.8 pints of excess moisture.
  • Easy to Use – The touch control panel and the remote control let you change the settings more conveniently.
  • Speeds – Choose your comfort level between the 3 integrated speeds.
  • Airflow – The 2-way air direction permits you to guide the air wherever you need it the most to prevent hot spots.
  • Timer – Set it from 1 hour to 24 hours in advance.

In case of a power shortage, it will automatically restart on the prior settings once the power comes back on. Additionally, the included washable filter removes allergen and impurities so you can breathe clean and fresh air. When filter change is needed, the indicator light will let you know that it’s time for the routine maintenance procedure.


5. LG LW8016HR – Best with Heat

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Specifications:


  • Cooling capacity: 7,500 BTUs
  • Room coverage: 320 square feet
  • Fan speeds: 2
  • Energy efficiency ratio: 11.2
  • Dehumidifying capacity: 2.1 pints per hour

  • Air direction control: 4-way
  • Noise level: 49 dB
  • For window size: N/A
  • Dimensions: 18.4” x 20.9” x 13.9”
  • Warranty: 1 year





This AC is exactly what you need if you want a model to provide you with cold air in the summer and warm air in the winter. You will be thoroughly pleased to know that you can fit it in different types of windows, including horizontal and standard windows. However, please bear in mind that if you have a horizontal window, you will need something to fill up the remaining space to block off intruders. It is one of the most convenient models on the market, providing easy access to the permanent washable filter that is located at the front. It can act as a dehumidifier as well, wicking 2.1 pints per hour. Some of its highlights include:

  • Cooling Speeds – If you don’t want to keep the fan on but you still want the room to be cooled, you can choose between the 2 settings.
  • Low Operational Noise – It produces 49 to 54 dB noise. This means that it will provide a whisper-quiet operation.
  • High CFM – The higher the cubic feet per minute, the better it will function in tough conditions.
  • Thermostat Control – In case the environment gets too cold or hot, it will automatically adjust itself to the conditions.
  • Filter Alarm – As you know already, there are a lot of pollutants in the air. When the filter cannot handle anymore, it will send off an alarm so you know when it’s time to clean it.

It will not bring up your electricity bill even if you keep it on for numerous hours as it has a ratio of 11.2. It is suited for year-round use, consuming 1260W when heating and 670W when cooling. Thus, as you can see, this is one of the best models on the market as it has been designed to fit your specific needs. You don’t have to spend thousands of dollars if you want to stay cool in the summer and hot in the winter. In addition to this, it requires little to no maintenance, so you don’t have to waste your time on it.


4. DELLA 10,000 BTU Window Air Conditioner – Best with Dehumidifier

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Specifications:


  • Cooling capacity: 10,000 BTUs
  • Room coverage: 450 square feet
  • Fan speeds: 3
  • Energy efficiency ratio: 12.1
  • Dehumidifying capacity: 2.55 pints per hour

  • Air direction control: 2-way
  • Noise level: 55 dB
  • For window size: 16” x 23”-36”
  • Dimensions: 20” x 22” x 15”
  • Warranty: 1 year





It operates on 10,000 BTUs, which means that it is able to cool down the bedroom, living room, or office within 10 minutes, being rated to cover areas of up to 450 sq. ft. You can run it throughout the day and night without worrying about your electricity bill as it is Energy Star certified for the low power draw, even being rated 12.1 in terms of energy efficiency. Some of its highlights include:

  • Airflow2-way air direction control is conveyed so that you adjust its functioning to your needs.
  • Temperature Control – It will maintain the preset temperature that can range between 61°F to 88°F.
  • Speeds – Switch between the 3 settings using the included remote.
  • Noise – It has been described as one of the quietest models on the market.
  • Window – It is ideal for window wideness from 23” to 36”.
  • Automatic – Once the room is cool enough, the Eco Mode automatically starts in order to preserve energy.
  • Operating Modes – The AC has numerous operating modes, among which you have the Dry mode that reduces moistness to make the environment more comfortable.
  • Timer – It will operate whenever you want it to as the timer ranges from 1 to 24 hours.

You can let it run even when you’re not at home due to the fact that it is UL listed, which means that it isn’t only efficient but safe as well. It includes a convenient remote control to operate the AC from afar, at no extra price. Furthermore, the included installation kit implies that you don’t have to make any further investments, all while helping minimize air leaks.


3. PerfectAire 3PASC10000 – Best for Casement Window

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Specifications:


  • Cooling capacity: 10,000 BTUs
  • Room coverage: 450 square feet
  • Fan speeds: 3
  • Energy efficiency ratio: 10.4
  • Dehumidifying capacity: 1.3 pints per hour

  • Air direction control: 4-way
  • Noise level: 56 dB
  • For window size: 15.5”-16.25” x 21.3”-39.5”
  • Dimensions: 23.5” x 14.75” x 21”
  • Warranty: 1 year





Whatever window you may have regardless if it’s casement, crank, or horizontal sliding, this model is suitable to use for all. It has a high capacity of 10,000 BTUs, which means that it will cover you even if the room you plan to set it up in is large-size. Moreover, the temperatures are customizable according to your needs. It is recommended to provide optimal cooling performance in spaces up to 450 sq. ft. It measures 23.5” by 14.75” by 21” and weighs 71 pounds, so you ought to be careful when you move it around. It features an indicator that turns on when filter cleaning is needed, the washable and reusable part cutting down on upkeep costs. It features electronic controls that are quite comprehensive. Provides a total of 3 fan speeds to select between for proper cooling of the room.

Check out how it compares to other casement window air conditioners to see which your best suited option is in case this is the setup you are dealing with.

On the remote control, you will be able to see the Follow Me option that turns the remote into a thermostat. Some of its highlights include:

  • Cool Mode – Turn it on when the weather is scorching hot as the 10,000 BTUs deliver a cool breeze.
  • Fan Mode – Even if the weather isn’t hot enough to turn on the AC, this setting allows circulation of fresh air without lowering the temperature.
  • Dry Mode – This mode removes the excessive water from the environment, which means that it eliminates the possibility of mold development.
  • Auto Mode – Starts and stops its functioning, customizing it accordingly so that it keeps the temperature you set throughout.
  • Sleep Mode – It runs at a lower speed and it gradually increases the temperature as you sleep.
  • Adjustable Directions – You can control the directions of the airflow up to 4 ways.
  • Washable Filter – The filter is easy to access, which means that you can clean it easily.

2. Kenmore 77127 – Editor’s Choice

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Specifications:


  • Cooling capacity: 12,000 BTUs
  • Room coverage: 550 square feet
  • Fan speeds: 3
  • Energy efficiency ratio: 12
  • Dehumidifying capacity: 2.2 pints per hour

  • Air direction control: 4-way
  • Noise level: 54 dB
  • For window size: 16” x 27”-39”
  • Dimensions: 15” x 23.6” x 22.2”
  • Warranty: 1 year , 5 years





If you want to save money yet you still want an efficient operation, you should consider this model. Once activated, the compressor and motor turn off once the room is at the desired temperature. The air is sampled every 10 minutes and it turns back on when the temperature rises.

Due to the plentiful features and speeds that accompany it, you can use it for a long period of time without worrying about discomfort. Some of its highlights include:

  • Remote Control – Using it, you can remotely control the temperature, fan speed, sleep mode, every saver, and more.
  • Air Control – It features 4-way air control, which means that you can aim the air whatever way you wish.
  • Speeds3 cool settings and 3 fan settings for your ideal comfort settings.
  • Warranty – The manufacturer has it covered against defects for 1 year.
  • Filter – It has an antimicrobial mesh filter that helps clear the air of impurities.
  • Operation – You can use it as a cooling and dehumidifying device.
  • Sleep Timer – Set it for up to 24 hours, so you can fully program its operation.
  • Alexa Compatibility – As it works with Alexa, you can conveniently program it via voice control.

It is suitable for rooms that measure 550 square feet and it can dehumidify up to 2.2 pints of moisture per hour so that you won’t have to pay extra to keep mold spores from developing indoors. Moreover, it doesn’t produce that much noise when it runs, an aspect that makes it suited even for a child’s room.


1. Whirlpool WHAW151BW – Best Overall

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Specifications:


  • Cooling capacity: 15,000 BTUs
  • Room coverage: 700 square feet
  • Fan speeds: 3
  • Energy efficiency ratio: 11.9
  • Dehumidifying capacity: 3.52 pints per hour

  • Air direction control: 8-way
  • Noise level: 56 dB
  • For window size: 19” x 28”-41”
  • Dimensions: 5.4” x 23.6” x 17.9”
  • Warranty: 1 year





Easy to install and operate, the entry that takes the #1 spot is sure to be worth every cent you spend on it. The dehumidification function it employs removes up to 3.52 pints from an area of up to 700 square feet. It is suitable for windows that measure from 28” to 41” wide max and that are 19” tall. The 15,000 BTUs ensure that the living room, bedroom, and the dorm room can be cooled within 10 minutes.

  • Speeds – It has 3 cooling speeds and an Auto option to fit your specific needs.
  • Louvers – The 8-way directional air louvers direct the air however you need it.
  • Timer – Set the 24-hour timer to make it operate whenever you need it to.

Even if you’ve never had an AC before, you will find it easy to figure it out as the controls are overly simplified. It comes with a window mounting kit and chances are you won’t need professional help to set it up. Some of its features are:

  • Display – The digital display shows you the settings that it is operating on. As well as, each button is clearly labeled.
  • Eco Mode – This feature ensures that the AC uses minimal energy. In fact, this is an Energy Star rated system with a capacity of 11.9 EER.
  • Automatic – Unlike the majority of the models, it will automatically turn on with the previous settings if you’ve experienced a power failure.

The remote control has an LCD display so that it allows you to change settings from across the room with ease. Moreover, the Sleep mode setting gradually increases the room temperature after it is activated.


Top 12 Comparison

Photo Products Price
Whirlpool WHAW151BW Image
Best Overall
1. Whirlpool WHAW151BW
  • Thermal energy: 15,000 BTUs
  • Coverage area: 700 sq. ft.
  • Fan speeds: 3
  • Energy efficiency ratio: 11.9
  • Compatible window size: 19” x 28”-41”
  • Dimensions: 25.4” x 23.6” x 17.9”
Check Price at Amazon
Kenmore 77127 Image
Editor’s Choice
2. Kenmore 77127
  • Thermal energy: 12,000 BTUs
  • Coverage area: 550 sq. ft.
  • Fan speeds: 3
  • Energy efficiency ratio: 12
  • Compatible window size: 16” x 27”-39”
  • Dimensions: 15” x 23.6” x 22.2”
Check Price at Amazon
PerfectAire 3PASC10000 Image
Best for Casement Window
3. PerfectAire 3PASC10000
  • Thermal energy: 10,000 BTUs
  • Coverage area: 450 sq. ft.
  • Fan speeds: 3
  • Energy efficiency ratio: 10.4
  • Compatible window size: 15.5”-16.25” x 21.3”-39.5”
  • Dimensions: 23.5” x 14.75” x 21”
Check Price at Amazon
DELLA 10,000 BTU Window Air Conditioner Image
Best with Dehumidifier
4. DELLA 10,000 BTU Window Air Conditioner
  • Thermal energy: 10,000 BTUs
  • Coverage area: 450 sq. ft.
  • Fan speeds: 3
  • Energy efficiency ratio: 12.1
  • Compatible window size: 16” x 23”-36”
  • Dimensions: 20” x 22” x 15”
Check Price at Amazon
LG LW8016HR Image
Best with Heat
5. LG LW8016HR
  • Thermal energy: 7,500 BTUs
  • Coverage area: 320 sq. ft.
  • Fan speeds: 2
  • Energy efficiency ratio: 11.2
  • Compatible window size: N/A
  • Dimensions: 18.4” x 20.9” x 13.9”
Check Price at Amazon
LG LW6017R Image
Best for the Money
6. LG LW6017R
  • Thermal energy: 6,000 BTUs
  • Coverage area: 260 sq. ft.
  • Fan speeds: 3
  • Energy efficiency ratio: 11.3
  • Compatible window size: 21” – 35” width
  • Dimensions: 11.14” x 17.32” x 14.37”
Check Price at Amazon
Frigidaire FFRA0511R1E Image
Best for Apartment
7. Frigidaire FFRA0511R1E
  • Thermal energy: 5,000 BTUs
  • Coverage area: 150 sq. ft.
  • Fan speeds: 2
  • Energy efficiency ratio: 11.1
  • Compatible window size: 12” x 16”
  • Dimensions: 16” x 15.25” x 12”
Check Price at Amazon
hOmeLabs 5000 BTU Window Conditioner Image
Best for RV
8. hOmeLabs 5000 BTU Window Conditioner
  • Thermal energy: 5,000 BTUs
  • Coverage area: 150 sq. ft.
  • Fan speeds: 4
  • Energy efficiency ratio: 11.1
  • Compatible window size: 13” x 23”-36”
  • Dimensions: 16” x 12” x 15.4”
Check Price at Amazon
Emerson Quiet Kool EARC5MD1 Image
Best for Small Room
9. Emerson Quiet Kool EARC5MD1
  • Thermal energy: 5,000 BTUs
  • Coverage area: 150 sq. ft.
  • Fan speeds: 2
  • Energy efficiency ratio: 11
  • Compatible window size: 13” x 23”-36”
  • Dimensions: 15” x 16” x 12.5”
Check Price at Amazon
Friedrich Chill CP06G10B Image
Most Energy Efficient
10. Friedrich Chill CP06G10B
  • Thermal energy: 6,000 BTUs
  • Coverage area: 250 sq. ft.
  • Fan speeds: 3
  • Energy efficiency ratio: 12.2
  • Compatible window size: 20.1” – 36” width
  • Dimensions: 13.8” x 18.5” x 20.6”
Check Price at Amazon
Haier ESAQ406T-H Image
Best for Bedroom
11. Haier ESAQ406T-H
  • Thermal energy: 6,000 BTUs
  • Coverage area: 250 sq. ft.
  • Fan speeds: 3
  • Energy efficiency ratio: 11.2
  • Compatible window size: 26-1/6” – 39.25” width
  • Dimensions: 18.125” x 21.25” x 12.4”
Check Price at Amazon
Frigidaire FFRE063WAE Image
Best with Air Purifier
12. Frigidaire FFRE063WAE
  • Thermal energy: 6,000 BTUs
  • Coverage area: 250 sq. ft.
  • Fan speeds: 3
  • Energy efficiency ratio: 12.1
  • Compatible window size: 23” – 36” width
  • Dimensions: 15.5” x 13.2” x 18.5”
Check Price at Amazon

Tips To Sustain Optimal Efficiency


As you may know, an AC will last on average around 10 years if you don’t invest time in thorough maintenance. If you take care of it regularly, some people have reported their systems to last well over 10 years. Don’t worry, upkeep doesn’t imply a hellish amount of labor work either. In fact, if you clean the filter when you are supposed to, its lifespan is automatically maximized. As long as you follow the tips below, you will find that your purchase will turn into a long-term investment.

Check the Coil

Whenever it gets cooler, you should wash the condenser coil on the outside unit. You should do this at least once a year as it ensures the AC running at peak efficiency. A dirty condenser coil runs hotter and is less efficient. You can tell if it’s running low by following through as instructed:

  • Check the copper tube connecting the exterior unit to the interior unit.
  • If it’s clogged, it is heated up.
  • Call for professional service to tell you if it is low on refrigerant.
When You’re Not At Home

You don’t have to necessarily turn it off completely when you go on vacation. This is because when you arrive home, it will work much harder to cool the house when you turn it back on. It will take a long time to cool down the whole room as well. You should remember:

  • Plants, pets, and appliances will suffer if you don’t set a timer.
  • Set the temperature 5 to 10 degrees higher than normal.
  • It will take less than 1 hour to cool down the room when you come back.
Don’t Obsess Over the Thermostat

We recommend that you leave the thermostat at 78°F. Some people sneak in and try to turn the heat down. What these people don’t understand is the fact that you don’t have to turn it lower to cool the house down faster. The AC will cool down the room at the same rate no matter how you set it. Adjusting the temperature to 70°F will not help your house get to 78°F any faster than leaving it at 78°F.


How To Clean A Window Air Conditioner Without Removing It


You can clean the AC daily if you wish. However, if you want to be correct in your treatment of it and use it by the book, clean it according to frequency of use. This is the reason why most people clean it on a monthly basis. It’s important to mention that if you decide to clean the AC every other month, it will require a thorough clean. The reason for this is because it will accumulate a lot of dirt and dust.

Before you begin the cleaning process, you have to ensure that it’s turned off and unplugged from the power source. Then, you should:

Step #1: Remove the front panel to access the filter. Ensure that you check for any screws that may be attached to the unit. Thus, you should check the user manual to guide you on how to remove it properly.


Step #2: If the grime seems too difficult to wipe off, use a vacuum hose to remove the dirt. If not, dip the towel inside a detergent solution. If you wish, you can also run the filter through running water to remove any dust or dirt particles.


Step #3: Ensure that the filter dries and return it to its position. Use a dry towel if there’s excessive water. Do not slide it inside of the AC if you believe that it’s not dried completely. If the front panel looks worn-out, you can contact the manufacturer to purchase a new one.



Conclusion

Just because you install an AC, it doesn’t mean that you have to get the biggest one. As you have seen in our reviews, compact-size systems can actually provide quite a complex range of operation, some catering to small spaces, while the larger-capacity 10,000 BTU models effectively cool rooms of up to 450 sq. ft. effortlessly, most within a short 10-minute span. Before we reach a conclusion, let’s take some time and go over some of the selections that stand out the most to further help you reach a decision, an informed one that you are sure not to regret.

Best small window air conditioner on the market: Whirlpool WHAW151BW

Even though it is a small-size AC unit as it measures a mere 23.6” by 17.9” by 5.4”, which makes it suitable for windows of 19” in height and ranging in width from 28” to 41”, this Whirlpool entry actually packs a punch seeing how it employs a cooling power of 15,000 BTUs that evidently renders it useful in larger-size spaces of up to 700 square feet.

It doesn’t produce much noise either, the estimated 56 decibels it outputs when it runs ensuring you can go ahead and mind your chores when it’s on without worrying that it will present a distraction. There are 3 selectable speed levels that make it suit the operation you need from it, as well as dehumidification performance that makes it fulfill the role of a dehumidifier as it wicks away excess moisture to provide a more soothing indoor ambient.

Editor’s choice: Kenmore 77127

An entry that caters to large-size spaces as it employs 12,000 BTUs, more precisely providing optimal performance in areas of up to 550 square feet, the Kenmore is our favorite for a variety of reasons. First off, it produces only 54 dB when it runs, so it won’t present a distraction. Secondly, it can remove upward to 2.2 pints of moisture per hour from the air it pulls in, ensuring that there won’t ever be a need to separately acquire a dehumidifier for the room you place in it. Furthermore, it is quite rich in features, including 4-way air control for optimal air distribution, as well as a 24-hour timer that helps reduce operating costs.

Best small window air conditioner with heat: LG LW8016HR

Suitable for year-round use as it provides both cooling and heating capabilities, this LG entry is the go-to if you seek a system with heat, consuming 1260W when used for the purpose of raising indoor temperature. Fret not that its operation might be costly as it is 11.2 EER rated, which places it among the more energy-efficient systems on the market. Another notable highlight regarding the system is that it features thermostat control, which means that it makes proper adjustments on its own to comply with your desired conditions, regardless if we are talking about its operating in the cooling mode or when heating.

Most energy efficient small window air conditioner: Friedrich Chill CP06G10B

Even though all of our selections are quite efficient when it comes to energy consumption, none compare to this Friedrich Chill entry, something that you can realize on your own quite easily considering the fact that it is rated at 12.2 for energy efficiency. Thus, expect low operating costs from the system. It even features a MoneySave mode that further reduces running costs when activated as it alternates between the compressor and fan in its cycles to preserve as much energy as possible.

Best small window air conditioner for the money: LG LW6017R

Easy on the wallet when you report the performance it delivers in terms of cooling with the asking price, this LG entry is definitely the value deal of the moment. The small-size AC is usable in spaces of up to 260 square feet seeing how it flaunts a 6,000 BTUs cooling power, being able to significantly reduce indoor temperature within 10-15 minutes. It even comes with energy saving functions including the likes of a 24-hour timer and the suggestively-named Energy Saver mode that keeps it running only when needed and for an optimal amount of time.

Tobey Hunter
Tobey Hunter
Tobey is the editor-in-chief at Optima Institute, his prior experience as a niche product reviewer in air quality improvement systems helping shape his path to conduct thorough research toward selecting and analyzing products so that customers are satisfied with the provided recommendations. During his carrier, Tobey also gathered technical input that makes him well versed in understanding advancements in modern systems, helping readers in turn to better understand how modern devices help improve life quality.