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8 Best Rated Smallest Window Air Conditioners You Can Buy

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M ost window AC units do a pretty good job when it comes to cooling the room, but they tend to be bulky and ugly. Trying to hide them from view may not be the best idea, especially as there are chances to restrict the airflow. And you surely don’t want that to happen. The best option is to buy a small AC that fits your window and doesn’t ruin the room design.

Some people are afraid that a small AC isn’t strong enough to effectively cool the room, and we totally agree. Anyway, it is not the case with the units selected here as they are small yet deliver great performance. For more info and ranking, keep reading and discover why the models we’ve selected are the best options at the moment.

The models below are not designed for large areas but rather for offices or small bedrooms. For larger rooms, opt for a through-the-wall air conditioner that can be used even without the presence of a window.

Top 8 Smallest Window Air Conditioners Compared

Photo Product Name Compatibility Cooling Power Area Coverage Dehumidification Rate Cool Speeds/Fan Speeds Warranty Price
Koldfront WAC10002WCO Image
Best Overall

1. Koldfront WAC10002WCO

Windows 23 to 36 inches wide and 15.5 inches high 10,000 BTUs 450 sq. ft. N/A 3/3 2-year on parts and labor Check Price at Amazon
Frigidaire FFRE063WAE Image
Best for Small Bedroom

2. Frigidaire FFRE063WAE

Windows 23 to 36 inches wide and 14 inches high 6,000 BTUs 250 sq. ft 1.3 pints/hour 3/3 1-year limited / 5-year sealed system Check Price at Amazon
LG LW6017R Image
Editor’s Choice

3. LG LW6017R

Windows 21 to 35 inches wide and 12 inches high 6,000 BTUs 260 sq. ft. 1.8 pints/hour 3/3 1-year on parts and labor Check Price at Amazon
hOmeLabs AC-188 Image
Best for the Money

4. hOmeLabs AC-188

Windows 23 to 36 inches wide and 13 inches high 5,000 BTUs 150 sq. ft. N/A 2/2 30-day money back guarantee/2-year (+6 months with product registration) Check Price at Amazon
Friedrich CP06G10B Image
Best for Kitchen

5. Friedrich CP06G10B

Windows 13.875 inches wide and 20.125 inches high 6,000 BTUs 250 sq. ft 1.8 pints/hour 3/3 1-year on parts and labor Check Price at Amazon
Haier HWR06XCR Image

6. Haier HWR06XCR

Windows 24.5 to 36 inches wide and 13.375 inches high 6,000 BTUs 250 sq. ft 1.1 pints/hour 3/3 1-year on parts and labor Check Price at Amazon
Friedrich CCF05A10A Image

7. Friedrich CCF05A10A

Windows 20 1/8 to 36 inches wide and 20 1/2 inches high 5,200 BTUs 150 sq. ft. 1 pint/hour 3/3 5-year on parts and labor Check Price at Amazon
Midea MWA06CR71-E Image

8. Midea MWA06CR71-E

Windows 23 to 36 inches wide and 14 inches high 6,000 BTUs 250 sq. ft 1.27 pints/hour 3/3 1-year on parts and labor Check Price at Amazon

1. Koldfront WAC10002WCO

Check Price at Amazon


Specifications

  • Window Minimum Height: 15.5”
  • Window Width Range: 23”-36”
  • Cooling Power: 10,000 BTUs
  • Capacity: 450 sq. ft.
  • Wattage: 880W
  • Dehumidification:
  • Noise Level: 57-59.5 dB
  • Energy Efficiency Ratio: 12
  • Filter Type: Air Mesh
  • Fan Speeds: 3
  • Air Direction Control: 4-Way
  • Window Mounting Kit Included:

If you are looking to provide cooling for a large room, this model by Koldfront is the best option. It is bulkier than any other models, but it can effectively cool up spaces up to 450 sq. ft.

The yearly operating costs will double with this unit, but this is absolutely normal since it has twice the power of the regular small models. The estimated annual cost for 8 hours per day for 3 months is $81. This is a decent cost if we compare it to other similar models that can cost you up to $127 per year. It is Energy STAR approved, so you can definitely trust it to lower your bills.

It is packed with many nice features that allow you to adapt it to your preferences. Among others, it has a built-in timer, an energy saver mode, as well as multiple fan speeds – low, medium, and high. Here are some other nice traits:

  • Sleep mode for reduced energy costs: when this mode is selected, the temperature is constantly adjusted by 2 degrees Fahrenheit. This happens for 6 hours, then it returns to the value you’ve selected.
  • Alerts you when it is time to replace the filter: the LED light illuminates to remind you to clean the filter. It is set to alert you after 250 hours of use.
  • You can point the air stream in the direction you want: it allows you to manually set the air louvers to distribute the air evenly in the room. With the help of the center handle, you can guide them to the left, right, up, and down.

2. Frigidaire FFRE063WAE

Check Price at Amazon


Specifications

  • Window Minimum Height: 14”
  • Window Width Range: 23”-36”
  • Cooling Power: 6,000 BTUs
  • Capacity: 250 sq. ft.
  • Wattage: 500 W
  • Dehumidification: 1.3 pints/hour
  • Noise Level: 51-55dB
  • Energy Efficiency Ratio: 12.1
  • Filter Type: Washable
  • Fan Speeds: 3
  • Air Direction Control: Swing
  • Window Mounting Kit Included:


Designed by a trustworthy brand, this unit stands out through its quiet run, a feature that makes it ideal for bedrooms. It offers both a fan and a cooling mode, each of them with three speeds, which will reach different sound levels. Thus, on the lowest setting, the maximum number of decibels will be 51, which is lower than the average, on medium speed, it will produce 53 decibels, while on the highest setting, where most units tend to get fairly loud, this model will stay somewhere under 55 decibels.

While the sound level is significant, the good news is that it doesn’t affect the unit’s performance. Thus, the strong motor will deliver up to 6,000 BTUs, enough to cover a space of 250 sq. ft.

Other excellent features are:

  • Strong airflow: with a peak of 169 CFM, attained at the highest speed, 145 CFM on medium speed, and 132 CFM on the lowest speed, it can be considered fast, as long as it is used in the recommended space.
  • Built-in timer: it allows you to select the time when the unit should start and turn off in 30-minute increments.
  • Energy-saving operation: it has been Energy-Star verified and has a merged energy-efficiency ratio of 12.1, being more effective than most conventional units.
  • Dehumidification: this function allows it to draw around 1.3 pints of moistness per hour, so it can maintain a mold-free environment in small rooms that are exposed to humidity.

Besides all these, it comes with an excellent service contract that covers parts and labor for 1 year and the sealed system for 5 years.


3. LG LW6017R

Check Price at Amazon


Specifications

  • Window Minimum Height: 12”
  • Window Width Range: 21”-35”
  • Cooling Power: 6,000 BTUs
  • Capacity: 260 sq. ft.
  • Wattage: 520W
  • Dehumidification: 1.8 pints/hour
  • Noise Level: 52-56 dB
  • Energy Efficiency Ratio: 11.3
  • Filter Type: Air Mesh
  • Fan Speeds: 3
  • Air Direction Control: 2-Way
  • Window Mounting Kit Included:


Ideal for small windows, this unit is also very quiet. The noise indoor level is 52 dB, and the outside level is 56 dB. It can successfully cool a room of 260 sq. ft., and it supplies a dry airflow of 134 CFM. It has a cooling capacity of 6,000 BTUs. The unit is 17.31 inches wide, 11.125 inches tall, and 14.375 inches long, and it weighs 39.6 lbs.

With multiple built-in functions, it is one of the best you can get. It has a built-in thermostat that allows you to set the temperature and select among 3 cooling modes. You can also opt for the fan only mode and choose among 3 speeds. Additionally, you can alter the air direction from left to right.

  • Energy saver mode: to help you save energy, the fan stops on its own when the compressor stops. Then, the fan turns on every 3 minutes to check the temperature. If the temperature is higher than desired, the fan will instantly start to cool the room. The inside temperature can be set between 60 and 86F.
  • Can be used as a dehumidifier: when set in dry mode, it is capable of collecting the humidity from the air. It can collect up to 1.8 pints of water.
  • Control the unit while sitting on the couch: the included remote control allows you to pick the preferred temperature, speed, mode, and time.

4. hOmeLabs AC-188

Check Price at Amazon


Specifications

  • Window Minimum Height: 13”
  • Window Width Range: 23”-36”
  • Cooling Power: 5,000 BTUs
  • Capacity: 150 sq. ft.
  • Wattage: 460W
  • Dehumidification:
  • Noise Level: 60 dB
  • Energy Efficiency Ratio: 11.1
  • Filter Type: Antibacterial Mesh
  • Fan Speeds: 2
  • Air Direction Control: 2-Way
  • Window Mounting Kit Included:


It is fit for rooms up to 150 sq. ft., packing a cooling capacity of 5,000 BTUs. It is compact and lightweight, and it includes the mounting kit.

With this unit, you can set the fan and the cooling at low and high speed. You can also direct the airflow to the left or right by moving the levers. Nonetheless, it is not capable of restarting after a power failure.

It is not STAR verified, yet it won’t cost you more than $41 per year if you use it for 8 hours per day for 3 months. This means it is more energy-efficient than most similar units.

  • Cools your room in about 15 minutes: it is highly efficient, so you will be able to cool yourself right after you turn it on.
  • Built-in thermostat with preset temperatures: you can select one of the 7 preset temperatures. Once the desired temperature is achieved, it will stop and start automatically to maintain the temperature.

5. Friedrich CP06G10B

Check Price at Amazon


Specifications

  • Window Minimum Height: 13.875”
  • Window Width Range: 20.125”
  • Cooling Power: 6,000 BTUs
  • Capacity: 250 sq. ft.
  • Wattage: 530W
  • Dehumidification: 1.8 pints/hour
  • Noise Level: @60 dB
  • Energy Efficiency Ratio: 12.2
  • Filter Type: Antimicrobial Mesh
  • Fan Speeds: 3
  • Air Direction Control: 4-Way
  • Window Mounting Kit Included:

Our next option is this model made by Friedrich. If we compare it to the previous model, its capacity makes it suitable for slightly larger rooms – up to 250 sq. ft. instead of 150 sq. ft. Due to this fact, it is a little bit larger.

It comes with some nice traits that make it more versatile. It restarts automatically in case of a power outage, remembering the preferred settings. Additionally, it has side curtains that can be extended to reduce the exterior light and noise. Another nice feature is the possibility to run the power cord both right or left out the side of the cabinet.

  • Uses little electricity: the unit is Energy STAR qualified, which means it is an energy-efficient model that will help you save more money. And protect the surroundings. According to the estimations, using it 8 hours per day for 3 months will cost you $44.
  • Can be set to power on and off automatically: one of the best features it offers is the 24-hour timer. You can program it now, and it will turn on or off at a particular hour.
  • Uniform air distribution with the help of the air sweep louvers: once turned on, it automatically oscillates the louvers from left to right. This helps to uniformly distribute the air. You also can adjust them up and down but only manually.

6. Haier HWR06XCR

Check Price at Amazon


Specifications

  • Window Minimum Height: 13.375”
  • Window Width Range: 24.5”-36”
  • Cooling Power: 6,000 BTUs
  • Capacity: 250 sq. ft.
  • Wattage: 530W
  • Dehumidification: 1.1 pints/hour
  • Noise Level: 55 dB
  • Energy Efficiency Ratio: 11.2
  • Filter Type: Permanent Mesh
  • Fan Speeds: 3
  • Air Direction Control: 4-Way
  • Window Mounting Kit Included:


This model made by Haier has the same capacity as the Friedrich CP06G10B (6,000 BTUs) only that it is not Energy STAR certified, so running it will cost you a little bit more. An estimated cost for 8 hours of daily use for 3 months is $53. However, this is not very bad, considering the fact that other similar units may cost you up to $72 per year.

For its capacity – it is fit for rooms up to 250 sq. ft. – it is compact and fairly lightweight. Besides, it comes with some nice features that make it worth the investment. It restarts automatically in case of a power failure and it has a built-in 24-hour timer that allows you to program it to power on and off at a certain hour.

It has multiple speeds that allow you to adjust the intensity of the cooling and fan. Also, the airflow can be directed in 4 ways – left and right, up and down.

  • Set it in the sleep mode to enjoy a cool night’s sleep: this function keeps you cool when sleeping. Once selected, the temperature will increase by 2 degrees Fahrenheit after the first 2 hours. Then, the AC will maintain this temperature for 6 hours.
  • Automatically adjusts the fan speed: in the auto cool mode, it automatically adjusts the speed of the fan to satisfy your cooling needs.

7. Friedrich CCF05A10A

Check Price at Amazon


Specifications

  • Window Minimum Height: 20-1/2”
  • Window Width Range: 2-1/8”-36”
  • Cooling Power: 5,200 BTUs
  • Capacity: 150 sq. ft.
  • Wattage: 459W
  • Dehumidification: 1 pint/hour
  • Noise Level: N/A
  • Energy Efficiency Ratio: 12.1
  • Filter Type: Built-In Antibacterial Filter
  • Fan Speeds: 3
  • Air Direction Control: 8-Way
  • Window Mounting Kit Included:


If you are interested in a convenient model that will allow you to have full control over functions and settings through a remote, this model will surely meet your expectations. Designed to fit windows with a width between 20.1/8 and 36 inches and a height of 20.5 inches, it isn’t as compact as other models. However, it comes with a fitting kit and is fairly easy to mount. The housing is insulated and built of strong materials that make it resistant to weather.

It has a cooling capability of 5,200 BTUs and a dehumidification rate of 1 pint per hour. Besides that, it offers a wide range of settings that make it both versatile and easy to operate. Here are some of the most significant:

  • Washable mesh filter: the air is drawn through this layer and, thus, cleaned of larger particles before being released back into the room. The filter has the property of protecting the internal elements of the unit as well.
  • 8-way airflow control: you can decide if the airflow should cover the entire room or just the spot where you are working or sleeping. If you pick the second option, you will be able to enjoy cooler air faster.
  • Timer: can go from 1 hour to 24 hours, so you can decide when the unit should take a break.
  • Auto-restart: this function keeps you covered in case of a power outage. Thus, the unit will restart on its own and resume the program.
  • App control – it has WiFi capabilities so you will be able to control it remotely through your phone.

With an energy-efficiency ratio of 12.1, running it will cost you around $42 per year, which is equitable. Besides that, you will be able to save a lot in case it gets broken due to manufacturing flaws or other mishaps that are covered by the warranty, as the assurance period extends to 5 years.


8. Midea MWA06CR71-E

Check Price at Amazon


Specifications

  • Window Minimum Height: 14”
  • Window Width Range: 23”-26”
  • Cooling Power: 6,000 BTUs
  • Capacity: 250 sq. ft.
  • Wattage: 700W
  • Dehumidification: 1.27 pints/hour
  • Noise Level: 51.9-55.5 dB
  • Energy Efficiency Ratio: 12.2
  • Filter Type: Reusable
  • Fan Speeds: 3
  • Air Direction Control: 4-Way
  • Window Mounting Kit Included:


Versatile and stylish, this AC is perfect for areas between 150 and 250 sq. ft, as it boasts a 6,000-BTU cooling power. You will simply love its functionality, as well as the included remote control that allows you to set it while relaxing on the sofa.

It is fit for windows with a width between 23” and 26” and a height of 14 inches. It comes with all the accessories included for performing the installation and clear instructions.

The estimated energy cost per year is $48, so you can consider it an energy-efficient option. To help you reduce the electricity bills, it features an Eco mode. Therefore, once the set temperature is reached, it shuts off automatically. You can also set it to turn on or off with the built-in 24-hour timer. For cool nights, you can select the sleep mode that automatically regulates the temperature to feel more comfortable.

  • It cools, dehumidifies, and circulates the air in the room: you can choose one of the 3 functions available to feel as comfortable as possible. You don’t have to buy a separate dehumidifier as this AC is also able to remove water from the air with just a push of a button.
  • Automatically corrects the temperature based on the location of the remote control: the remote control doubles as a thermostat. The “Follow Me” mode enables the unit to regulate the temperature so you can enjoy the same comfort even if you’re not near the AC.

Benefits and Drawbacks of AC Units


There is no such thing as a perfect product. So, before making up your mind, find out which are the advantages as well as the possible disadvantages of each unit.

Koldfront WAC10002WCO

  • suitable for larger rooms, Energy STAR certified, lots of features
  • rather loud, less compact than the other units

Frigidaire FFRE063WAE

  • quiet, powerful, energy-efficient
  • the side panels have gaps that need to be solved with duct tape

LG LW6017R

  • quiet, lightweight, many functions and modes
  • short warranty, poor instructions

hOmeLabs AC-188

  • lightweight, easy to install
  • doesn’t have a dehumidifying function, few features, warms up pretty fast, no drill holes so the water collects in the housing

Friedrich CP06G10B

  • quiet, Energy STAR certified, easy to install,
  • expensive, the front cover is a cheap plastic, flimsy installation support system

Haier HWR06XCR

  • many features, the remote control has braille
  • short warranty, the magnet on the remote is too strong, not very quiet

Friedrich CCF05A10A

  • remote control, timer, auto restart, WiFi connectivity
  • a bit noisy, bright lights on the control panel cannot be dimmed

Midea MWA06CR71-E

  • multiple modes, quiet operation, stylish design
  • the controls are not straightforward, you have to deactivate the Eco mode every time the unit starts on

Frequently Asked Questions



How many BTUs do I need?
Considering that an AC needs 20 BTUs per square foot of the room, you will need to measure the space that needs cooling, calculate the area, and multiply the sum by 20. Nonetheless, other factors may influence the final value. For example, if your room is exposed to the sun most of the day, you should increase the BTU by 10%, while if it is rather shady, you can decrease the value by 10%. If more than one person is living in the room, you should add 600 supplementary BTUs for each additional person. Moreover, if you are planning to mount it in the kitchen, make sure to add 4,000 extra BTUs to the number, as this is a humid and hot space.

Do windows ACs use a lot of electricity?
Units of this type are designed to cover a single room, so compared with an AC that covers the entire house, they are less power-consuming. They are a great pick if you are spending a lot of time in a single room and don’t want to pay extra on getting the entire house cooled down. Nonetheless, if you are planning on mounting a window unit in every room, you may end up paying more than on central cooling, especially if your rooms are large and need a lot of cooling.

Can you use a window AC without a window?
The answer is no. Although you may hear that some people made some adjustments and managed to connect it to a vent, this is not a safe method, and we don’t advise it. Alternatively, it is good to know that there are plenty of safe alternatives if you don’t have a window available. For example, you could buy a portable AC, which can be connected to a vent through a hose.

What happens if the AC unit is too small?
If the unit doesn’t have enough BTUs, it will struggle to reach the optimal temperature, and this means that it will run continuously. This will make the compressor and motor wear faster, leading to more frequent maintenance and repairs. On the other hand, there’s not a good idea to use a unit that is too big either, as it will cool the room too fast, leaving no time for the dehumidification process to take place.

Will rain damage a window AC?
These units are designed to stand outdoor conditions, so the chances of them getting damaged by rain (even heavy rain) are slim. Nonetheless, if you’ve dealt with a storm lately, you may want to inspect your unit for possible branches or debris that may have gotten stuck inside. Also, if you are dealing with a yard flood and your AC touches the water, you should get it checked once the waters retreat.

Do window AC units circulate air?
Yes, they do have a fan, which usually helps circulate the cooled air. But if you only want to use it to stir the air in the room for a while, without employing the cooling function, this is possible. Most models will offer a Fan setting.

Do window ACs clean the air?
They come with filters (most are mesh models and washable). While you shouldn’t expect an AC to have the purification power of a high-end air purifier that uses a HEPA filter, you can rely on it to filter larger particles and allergens, making the air cleaner and safer to breathe.

Do window ACs pull air from outside?
The process here doesn’t imply drawing air from outside to cool the room, as a fan would do, but evicting the hot air from the room outside. Thus, the air indoors gets in contact with the refrigerant in the AC and gets cooled, while the refrigerant absorbs all the heat. The heat from the refrigerant is released outside, making it cool again for the cycle to restart.

How long do window ACs last?
A series of factors can influence the unit’s lifespan like the environment where it is used or the number of hours per day it operates. Nonetheless, the average functioning time is 10 years, assuming that the unit isn’t exposed to high humidity or extensive use.

Do window AC units need maintenance?
They are basically easy to maintain, as all internal components are sealed. You will only need to replace the filter once a month to ensure that the air in your room stays clean and wipe the interior part of the unit once in a while.



Conclusion

Now that we have reached the end of our analysis, it’s time to draw a conclusion. As you have probably noticed, we have only selected products that can pass the test of time and which can deliver great airflow with minimum energy consumption and at low noise levels.

Nonetheless, when picking one for your home, you should consider other criteria as well, like, for example, the size of the area you wish to cool or the amount of money you are willing to spend. In this direction, revisiting some of our best models can help you make a better decision.

Here’s what we recommend:

Best Overall Smallest Window Air Conditioner: Koldfront WAC10002WCO

It is almost incredible that this small unit can cool a space of 450 sq. ft., but when you take a look at its cooling power, you realize that you might just found the best deal for your small apartment. It generates up to 10,000 BTUs with a peak sound level of 59.5 dB and will only add $81 to your power bill, assuming that you use it only during the summer months. Moreover, you can reduce the costs even more if you use the sleep mode, which will adjust the temperature by only 2 degrees for 6 hours.

Editor’s Choice: LG LW6017R

Our favorite stands out through its excellent 6,000 BTUs cooling capacity and 11.3 efficiency ratio. This little AC can provide cool air for a room measuring up to 260 sq. ft. with a peak noise of 52 to 56 dB, a level that is often reached by purifiers, therefore you can rest assured that it won’t disturb your peace. Just like the previous model, it can be used as a dehumidifier as well. Plus, it comes with a remote, so you can easily control it from the coziness of your couch.

Best Smallest Window Air Conditioner for Kitchen: Friedrich CP06G10B

If the unit you are looking for is intended to be used in the kitchen, then we recommend this AC from Friedrich. Not only that it has a good 6,000-BTU cooling capacity, which will allow it to deal with the heat in a small kitchen, but it comes with a strong dehumidification function that will help you deal with steam and condensation.

Best Smallest Window Air Conditioner for the Money: hOmeLabs AC-188

This unit offers great quality at an excellent price and won’t raise your electricity bills too much, as it features an energy efficiency ratio of 11.1, a value that will materialize in no more than $41 per year, assuming that you use it only during the summer months for 8 hours per day. Besides that, it is very effective, as it can cool a 150 sq. ft. room in only 15 minutes. Not to mention that it comes with 7 temperature settings, so you will be able to customize it to your taste.

Best Smallest Window Air Conditioner for Small Bedroom: Frigidaire FFRE063WAE

It is created to stay quiet, even at the highest speed, with a peak of only 55 dB and a minimum of 51 dB. Besides, it has enough power to preserve a comfortable temperature day and night without having to overrun the motor. The airflow is excellent, and it also offers a dehumidification function that will keep mold out of your room.

Markus Mackay
Markus Mackay
Our resident expert in all things AC-related, Markus is a never-ending source of knowledge regarding how these systems work. What makes him so savvy in this field is his direct experience that he acquired while working in sales. The connections he made during that period also came in handy here as Markus knows a lot of experts in this field. With each article uploaded, he makes sure to gather the expertise of his more experienced ex-peers as well, making sure to provide readers with reliable reviews and articles.