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9 Smallest Window Air Conditioners You Can Buy

Small Window Air Conditioner Seen from Above

Small Window Air Conditioner Seen from Above

42

Models Considered

85

Hours of Research

3

Experts Interviewed

739

Consumer Reviews Analyzed

A ir conditioners are here to stay, that’s a given. With global warming affecting how temperatures will evolve with time, studies show that a dramatic increase in AC unit use is bound to occur in the following decades. This will inevitably mean bad news for future electricity consumption, that’s for sure, but in the meanwhile, we do expect a solution to appear that makes air cooling systems more energy efficient than they are at the moment.

This isn’t to say that AC units now aren’t within decent parameters when it comes to power consumption. Smaller ACs, like the ones we present here, are generally on the energy-efficient side because of their smaller footprint and lower cooling capacity. Needless to say, these systems are generally suited for less demanding jobs, like cooling small offices and rooms. However, this isn’t the case with all products. Some small ACs, while discrete in their design because of the smaller footprint, do deliver a surprising cooling performance.

Regardless of the cooling capacity you seek, as long as you’re on the hunt for a small window air conditioner, you have come to the right place. In the following, we will review and rate the best models at the moment, ACs that have different capabilities when it comes to their cooling efficiency but that all have one thing in common – their small size. So, if you want to make your search easier, stick with us and pick one of these effective systems to keep your home or office cool this summer.

Before we jump into the main topic though, we want to briefly discuss a topic that surely crossed your mind: whether a portable or window-mounted unit is the better choice for you. Let’s first see what differentiates them, as well as their ups and downs.

Portable vs. Window Air Conditioners

To make it through a torrid summer’s day, an AC unit is your best ally. But what type should you buy? There are two main varieties, namely window-mounted units like the products we review here, and portable air conditioners. Each has its own set of pros and cons, but what matters is that both types provide the expected outcome – creating a pleasant habitat indoors by bringing the temperature down a few degrees. In the following, we will crown each type of AC for the aspects it excels at, comparing window-mounted and portable units to see which is the winner.

  • Installation: There’s a bit of heavy lifting involved with setting up a window AC. The procedure itself is a bit more complicated too since you have to be careful. You are hanging it out of the window, so extra care is a must. On the other hand, with the portable unit, all you have to do is plug it in and make sure that you set up a vent for it. Winner – portable AC.
  • Portability: While it is possible to switch the placement of a window unit, taking it down from where you installed it and setting it up in a different room and window altogether, it will take a few hours and it’s not the easiest task either. On the other hand, as the name suggests, the same isn’t valid with a portable unit. Move it around from room to room as you like by simply pushing it around. So, if there are multiple rooms where you want to use the AC, the latter is your best option. Winner – portable AC.
  • Cooling power: There is a wide selection of products to pick from with both portable and window-mounted units. This implies that you will find a product for any area coverage and cooling capability you need. So, both types win.
  • Occupied space: The portable type loses ground here to the window-mounted unit since it occupies actual floor space. As opposed to it, the window type installs out of the way, so it doesn’t take up any usable space. Winner – window-mounted AC.
  • Price: ACs that cool small rooms generally range in price from $200 to $400, while units that cover larger areas can go for $550 or more. Prices vary for both types depending on their area coverage, cooling capacity, features, included accessories, and even the producing brand. So, there’s no clear winner, both window-mounted and portable ACs being equal when it comes to pricing.
  • Noise level: While the exact amount of noise produced differs from one model to another, window ACs are generally quieter because most of the ruckus is directed outside. The same isn’t valid with portable units since they don’t have an exterior outlet to direct the noise, so they are usually louder. Winner – window-mounted AC.

Conclusion: Both portable air conditioners and window-mounted air conditioners are equally great at the core job they must perform, and that’s what matters most. There’s no clear winner, that’s for sure. Each type is preferable for specific situations, and the type that’s best for you depends on what you need. If you have no free floor space or it’s limited, a window-mounted AC is better. If you want to cool multiple rooms without buying more than one AC, then the portable type is the right option. So, it all comes down to what complies with your needs best.

Now that you know a bit more about both main types of air conditioners and you can make an informed decision regarding what you should get, let’s move on and learn what the best small window units are.

The ACs reviewed here are not intended 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 9 Smallest Window Air Conditioners Compared

Photo
Product
Window Compatibility
Cooling Power
Area Coverage
Dehumidification Rate
Cool Speeds/Fan Speeds
Warranty
Price

Best Overall
26” to 36” wide and 16” high
10,000 BTUs
450 sq. ft.
2.11 pints/hour
3/3
1 year
23 to 36” wide and 15.5” high
10,000 BTUs
450 sq. ft.
N/A
3/3
2 years
23”-37” wide and 14” high
8,300 BTUs
350 sq. ft.
N/A
3/3
1 year

Best for the Kitchen
18 3/8”-28” wide and 14” high
6,000 BTUs
250 sq. ft
1.8 pints/hour
3/3
1 year

Editor’s Choice
26 to 39” wide and 13.3” high
6,000 BTUs
250 sq. ft.
N/A
4/4
1 year for parts and labor, 5 years for the sealed system

Best for Small Bedroom
23 to 36” wide and 14” high
6,000 BTUs
250 sq. ft.
1.3 pints/hour
3/3
1 year for parts and labor, 5 years for the sealed system
21 to 35” wide and 12” high
6,000 BTUs
260 sq. ft.
1.8 pints/hour
3/3
1 year

Best for the Money
23 to 36” wide and 13” high
5,000 BTUs
150 sq. ft.
N/A
2/2
2 years

Best for the Money
23 to 36” wide and 14” high
6,000 BTUs
250 sq. ft
1.27 pints/hour
3/3
1 year

1. Whirlpool WHAW101BW

Summary: Cool comfort is what this Whirlpool window AC offers despite the small size. Suited for windows with a minimum width of 26 inches and height of 16 inches, it’s a petite yet fierce cooling system that you can count on for years to come. It even does a great job at removing excess moisture to increase comfort indoors on more fronts than one, making the presence of a dehumidifier in the room where you install it obsolete.

9 Smallest Window Air Conditioners You Can Buy

Pros:

  • Fitted with 8-way air directional louvers, so you decide the direction in which the air flows for maximum comfort
  • 12.1 EER rating shows this is one of the most energy-efficient AC units available
  • Run it in Eco mode to further save on utility bills
  • Restarts with your pre-selected settings after power failures

Cons:

  • It is a bit noisy on the upper fan speed settings
  • Installation was a bit more difficult than we expected





100%

Cooling capacity



100%

Energy efficiency



100%

Moisture removal



97%

Quiet operation




A brand that likely needs no introduction by now is Whirlpool. Famous for the qualitative household appliances and electronics it produces, this manufacturer has graced customers with yet another product worth investing in, the Whirlpool WHAW101BW window AC. Small yet fierce, easy to install and use, it’s a product that you are sure to be glad you bought. The feedback from existing customers is positive, and after testing it ourselves, we must admit we were impressed by it too.

*The window installation kit is included with the purchase, so you don’t have to spend extra cash for the setup at all.

Design & Accessories

This small Whirlpool air conditioner measures 21.5 inches in width by 19.8 inches in depth by 14.7 inches in height, which makes it suited for windows measuring from 26 to 36 inches in width and at least 16 inches in height. It boasts a simple design so that you won’t have trouble figuring out what buttons to press when you want to customize any of the provided settings. For that matter, a remote is included too, so you’ll have a significantly more convenient manner at your disposal to change settings from afar. Moreover, it features a digital display that makes selecting your preferred settings a breeze.

Cooling Performance

What matters most with an AC unit is its cooling ability. Since this Whirlpool model is rated at 10,000 BTUs per hour, it means that you can confidently install it in a room measuring 450 square feet tops. There are 3 cooling settings you can pick from too, so you can customize the pace at which the room is brought to your chosen temperature. The 24-hour timer is another factor that impacts its performance from this point of view since you can pick how long it should run continuously. Evidently, the timer reduces power draw too.

Dehumidification Performance

Top-tier air conditioners like the Whirlpool WHAW101BW provide an extra perk – dehumidification. In the room where you’re using this product, you won’t need to turn on a dehumidifier, that’s for sure. What makes us say this is the 2.11-pint dehumidification rate per hour of the AC, reducing air moisture at a considerable rate to ensure that the RH level will lower.

Performance Test Feedback

Setting it up is a two-man job because the system weighs a little over 60 pounds and I wanted to make sure I wouldn’t accidentally drop it. It’s not as easy to install it as I initially thought, but it wasn’t an impossible task either. The controls are straightforward, all the buttons are neatly named so you know what to press and why. The temperature in the room was 98 degrees Fahrenheit before I ran the AC, so I was sweating a bit. I set the AC at 78 degrees Fahrenheit to create perfect conditions comfort-wise. It took only a few minutes for this Whirlpool unit to make a difference when it comes to thermal comfort in the 330 square feet room I placed it in. It didn’t take long for it to bring the room temperature down to my choice setting either, which is evidently a plus. Another aspect I looked into was its dehumidification efficiency, and I must admit I was surprised to see that it did make a difference. After 3 hours of running, the AC made humidity levels in the room drop from 62% to 58%, so it does indeed fare as well as the manufacturer praises it. My personal experience testing it, combined with the positive feedback it has received from customers, as well as the fact that it’s manufactured by one of the most serious brands in the business, determined me to rank it first.

Marcus Mackay – Expert Reviewer and Tester

Whirlpool WHAW101BW Specifications Sheet

Minimum Window Height: 16” Window Width Range: 26” to 36”
Cooling Capacity: 10,000 BTUs Area Coverage: 450 sq. ft.
Power Rating: 826 watts Noise Level: 55 – 59 dB
Energy Efficiency Ratio: 12.1 Dehumidification rate: 2.11 pints/hour
Fan Speeds: 3 Air Direction Control: 8-Way
Included Window Mounting Kit: Warranty: 1 year

2. Koldfront WAC10002WCO

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Summary: When the blaze hits, you wish you had this powerful unit installed in your home, so you will always have the heat under control. With a generous temp range and a high BTU rating, it’s among the most powerful offered in the industry. The manufacturer also put attention to the consumption and fitted it with useful settings that lower the operating costs.

9 Smallest Window Air Conditioners You Can Buy

Pros:

  • It is intended to use as little energy as possible
  • It also dehumidifies and cleans the indoor air
  • The chilling power is increased
  • The warranty is generous
  • It notifies when the filter needs cleaning
  • The air goes in four directions

Cons:

  • It’s very loud even on the lowest setting
  • Some users reported problems with the remote





100%

Cooling capacity



100%

Energy efficiency



99%

Moisture removal



97%

Quiet operation




If you are looking to provide cooling for a large area, this model by Koldfront is the best option. It is bulkier than any other model, but it can effectively cool up spaces up to 450 sq. ft. The cooling rating reaches 10,000 BTU, so aside from the equally impressive performing Whirlpool WHAW101BW, it’s the only AC considerably stronger than its competitors that only bring 6,000 BTU to the table. It manages to lower room temperature to 62 Fahrenheit but it can also increase it to 82 Fahrenheit so it can be used all year round.

Installation

As mentioned, it requires installation in a frame, so you must check its dimensions and the requirements of the mounting frame. The housing measures 14.6” high, 19” wide, and 21.5” deep and fits within a minimum height of 15.5” and a width between 23” and 36”.

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 velocities – 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, and then it returns to the value you’ve selected.
  • Alerts you when you should 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: you can manually adjust the louvers to distribute the air evenly. With the help of the center handle, you can guide them in any of the four directions. Four velocities are available, along with 4 pre-set modes.

  • Long-range remote: in case you want to control it from a distance, you can use the remote that works from a 16-feet distance.

Energy Use

The yearly operating costs will double with this unit, but this is 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. Besides, the Energy-Saving mode turns on the fan for two minutes every 10 minutes whenever the temperature exceeds the level you set, at which time the compressor will resume cooling.

With a machine as important and expensive, a warranty is an essential aspect to keep your eyes on. The period provided for this model lasts for 2 years and covers the costs of replacement parts and labor.

In case an upright installation is more appropriate for you, check out vertical window ACs that provide more cooling power and can cover larger areas than their horizontal counterparts.

Koldfront WAC10002WCO Specifications Sheet

Minimum Window Height: 15.5” Window Width Range: 23” to 36”
Cooling Capacity: 10,000 BTUs Area Coverage: 450 sq. ft.
Power Rating: 880 watts Noise Level: 57 – 59.5 dB
Energy Efficiency Ratio: 12 Dehumidification rate:
Fan Speeds: 3 Air Direction Control: 4-Way
Included Window Mounting Kit: Warranty: 2 years

3. Windmill Smart Home AC

Summary: This Windmill AC is the smart option for modern folk. And this is all thanks to the fact that it’s Wi-Fi and app-enabled, which means that you have a more convenient means to monitor and control the system since you will be doing it using your smartphone.

9 Smallest Window Air Conditioners You Can Buy

Pros:

  • Smart Wi-Fi and app-enabled AC that you can control using your smartphone (it even works with Google Assistant and Amazon Alexa, so you can use voice commands to change settings)
  • Since it comes pre-assembled, there’s not much work on your part to set it up – the entire installation procedure took us about 20 minutes
  • It blows the air into the room at a 45-degree angle for optimal space cooling
  • The washable and reusable mesh filter traps airborne particles to clean the cool air released by the air conditioner
  • Beautiful design makes it a great addition to any room décor-wise

Cons:

  • To set up the app on your phone, you need customer service emails – the process will take a while
  • Doesn’t have a specialized Dry mode like most other models





98%

Cooling capacity



100%

Energy efficiency



99%

Moisture removal



98%

Quiet operation




Needless to say, the main reason why this Windmill AC features in our top is thanks to its compact size and packed design. It’s really a standout when it comes to looks, the simple yet modern design making it a perfect fit with any décor. But we’re not here to talk about aesthetics, far from it. While it does deserve a lot of praise for the way it looks and its small size, what makes the Windmill rank so high is the cooling performance and the fact that it’s smart.

What sets it apart from all other ACs we reviewed for this article is the fact that you can control it from anywhere using the app on your Android or Apple device. It even works with voice commands via Amazon Alexa or Google Assistant. This makes it a smart air conditioner, one that any modern person would surely benefit from using. Sure, the app is a bit annoying to set up since you have to wait a bit for an email from customer support before you follow through with the installation. But other than this, it’s perfect. No glitches, rare crashes, smooth navigation, and an intuitive, user-friendly design.

You surely want to benefit from optimal performance on the AC’s part. For this to be possible, we recommend that you use it for cooling an area no larger than 350 square feet. After all, it’s an 8,300 BTUs air conditioner, so you can’t expect it to cool down the whole house or a very large space. To maximize efficiency and lower operating costs as much as possible since your preferred temperature will be reached ASAP, it blows the cool air at a 45-degree angle into the room.

It won’t take you longer than 20-30 minutes to finish setting it up since it’s pre-assembled straight out of the box. Just make sure that the window you intend to install it in is single- or double-hung and that the vertical opening is 14 inches minimum, while the window width should range from 23 to 37 inches. If this checks out, then you can go ahead and set the AC up.

The auto-dimming LED display ensures it won’t become a distraction while you’re trying to fall asleep. Of course, the low operating noise helps too, making it a viable addition to the bedroom. It even scores high in the eco-friendly department since it uses a different refrigerant than the one commonly used with ACs. While most units use the 410a, this Windmill entry uses the R32 refrigerant that has 68% less global warming potential compared to its predecessor. In conclusion, if you’re looking for a smart, effective, efficient, and eco-friendly small air conditioner to keep you cool during heat waves, look no further than the Windmill Smart Home AC.

Windmill Smart Home AC Specifications Sheet

Minimum Window Height: 14” Window Width Range: 23” to 37”
Cooling Capacity: 8,300 BTUs Area Coverage: 350 sq. ft.
Power Rating: 690 watts Noise Level: 50 dB
Energy Efficiency Ratio: 12 Dehumidification rate: N/A
Fan Speeds: 3 Air Direction Control:
Included Window Mounting Kit: Warranty: 1 year

4. Friedrich CP06G10B

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Summary: It provides great results in cooling areas that don’t exceed 250 sq. ft., as most of the models we have revised. You will enjoy the convenience of pre-set functioning modes and an intuitive panel that simplifies its maneuvering. You might find it noisier than you thought it would be, even on the lowest setting.

9 Smallest Window Air Conditioners You Can Buy

Pros:

  • It operates at a low energy usage
  • The timer lets you select a working schedule
  • It retakes the settings if the power runs out
  • It is very intuitive in installation and maneuvering

Cons:

  • The louvers only move left and right with any pre-set program
  • It can get a bit noisy at times





96%

Cooling capacity



100%

Energy efficiency



98%

Moisture removal



95%

Quiet operation




Our next option is this model made by Friedrich, suitable for slightly larger rooms – up to 250 sq. ft. for which it engages 6,000 BTU. The CP06G10B we are currently reviewing comes with some nice traits that make it versatile. It restarts automatically in case of a power shortage, 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 on either the right or left side of the cabinet.

  • Uses little electricity: the unit is Energy STAR qualified, so it is an energy-efficient model that will help you save more money and protect the surroundings. According to the estimations, using it for 8 hours per day for 3 months will cost you $44. Other Energy Star certified options are the Koldfront WAC10002WCO and the Haier HWR06XCR.
  • Can be set to power on and off automatically: among the top 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 to uniformly distribute the air. You can also move them up and down but only manually.

When installed in a bedroom or near a recreational area, the AC should remain as silent as possible so it won’t become bothersome. If you are picky when it comes to the operating sound made by your appliances, have a look at the quietest air conditioners offered in stores.

Friedrich CP06G10B Specifications Sheet

Minimum Window Height: 14” Window Width Range: 18-3/8” to 28”
Cooling Capacity: 6,000 BTUs Area Coverage: 250 sq. ft.
Power Rating: 530 watts Noise Level: 60 dB
Energy Efficiency Ratio: 12.2 Dehumidification rate: 1.8 pints/hour
Fan Speeds: 3 Air Direction Control: 4-Way
Included Window Mounting Kit: Warranty: 1 year

5. Haier ESAQ406T

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Summary: Clients praise the whisper-quiet functioning that makes it ideal even for bedrooms. Having it mounted is not a hard task, so you can easily do it yourself, and you will like how intuitive it turns out to be. Maintenance might be a bit complicated as the filter comes out with difficulty.

9 Smallest Window Air Conditioners You Can Buy

Pros:

  • It is an improvement from the other much noisier models
  • The sealed components are covered by an extended warranty
  • The airflow can be sent in 4 directions
  • Installation is very simple
  • It also dehumidifies the air as it cools it down

Cons:

  • The top vents are prone to collecting debris
  • The filter is hard to take out





96%

Cooling capacity



100%

Energy efficiency



97%

Moisture removal



100%

Quiet operation




Smaller spaces don’t require such extended power, so you might be ok with what this model has to offer. Slightly smaller in size, it can deal with the heat in rooms measuring up to 250 sq. ft. and it can also regulate humidity by extracting around 1.5 pints every hour. Another option for 250 sq. ft. spaces that comes from the same manufacturer is the Haier HWR06XCR. Both products are worth acquiring, but the widely appreciated reliability of the ESAQ406T during extremely torrid days was the differentiating factor that determined us to pick it as the best AC that Haier has produced yet.

  • An innovative cross-flow fan: it ensures a higher performance without creating a loud noise. The airflow is smooth, reaching 200 CFM, while the cooling power reaches 6,000 BTU. The current can be sent in any of the four directions, as the top-angled air discharge can be moved.
  • You can use the functional remote to access its settings from a distance and you will find it very simple to use as all the selections will be shown on the generous display.

  • It’s ultra-quiet at 44 dB: you can have it running even while you sleep, especially since it offers a special Sleep mode that ensures the ideal temperature will be achieved without disturbing your sleep. While it flaunts the same cooling power as this Haier model does, the Friedrich CP06G10B is louder, so the product we review here is your better alternative if you value a discrete operation.
  • The timer setting will come in handy whenever you will need to set a schedule, making it easier to arrive home to the ideal ambiance.

  • The fan velocity can be set to one of the 4 provided levels: ensures you will find the one that feels the most comfortable.

It also offers pre-set modes that have it running within certain parameters, so all you have to do is pick either the Sleep, Energy-Saving, Dehumidifier, or Cool mode. To ensure a clean ambiance at all times, a filter was also added, one that you can wash so you won’t have to permanently buy new filters. Every time it will require cleaning, a light will appear on the control panel, making it easier for you to ensure proper upkeep.

Considering the asking price, generous protection is welcome, and the manufacturer is aware of this so they cover the AC for 1 year after the purchase. The essential and most expensive part, the sealed element, is protected for 5 years, contributing to a stress-free utilization of this product.

Travel enthusiasts who own an RV surely know how hot these means of transportation can be during long, hot summer days. Luckily, we made a selection of the most effective air conditioners for RV that can be effortlessly installed there.

Haier ESAQ406T Specifications Sheet

Minimum Window Height: 13.3” Window Width Range: 26” to 39”
Cooling Capacity: 6,000 BTUs Area Coverage: 250 sq. ft.
Power Rating: 540 watts Noise Level: 44 dB
Energy Efficiency Ratio: 12.2 Dehumidification rate: 1.5 pints/hour
Fan Speeds: 4 Air Direction Control: 2-Way
Included Window Mounting Kit: Warranty: 1 year for parts and labor, 5 years for the sealed system

6. Frigidaire FFRE063WAE

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Summary: As one of the most popular models preferred by clients, it stands out through the compact shape and cooling ability that makes it ideal for medium-sized rooms. It offers all the essential settings and is very comprehensive to maneuver, especially thanks to the long-range remote.

9 Smallest Window Air Conditioners You Can Buy

Pros:

  • It provides an extended airflow
  • The protection policy is very user-friendly
  • It doubles as a dehumidifier
  • It can cover average-sized rooms without any problem

Cons:

  • It works louder than expected
  • The remote lacks an integrated thermostat





96%

Cooling capacity



100%

Energy efficiency



95%

Moisture removal



98%

Quiet operation




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 at medium speed, and 132 CFM at the lowest speed, it can be considered fast, as long as it is used in the recommended space.
  • Built-in timer: pick the time for it to start and turn it 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. It also cleans the air as it passes through the filter.

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.

Certain types of windows require a certain type of AC unit, as not all of them can fit regular models. If your house has slider windows, you might want to invest in a special casement window AC that can be easily mounted without having to alter the sills.

Frigidaire FFRE063WAE Specifications Sheet

Minimum Window Height: 14” Window Width Range: 23” to 36”
Cooling Capacity: 6,000 BTUs Area Coverage: 250 sq. ft.
Power Rating: 500 watts Noise Level: 51 – 55 dB
Energy Efficiency Ratio: 12.1 Dehumidification rate: 1.3 pints/hour
Fan Speeds: 3 Air Direction Control: Swing
Included Window Mounting Kit: Warranty: 1 year for parts and labor, 5 years for the sealed system

7. LG LW6017R

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Summary: The popularity of the brand can be seen in this product which has plenty of positive reviews from customers. It’s effective in cooling mid-size spaces and it can be used in any season. The dehumidifying feature is impressive, as it manages to considerably reduce the moistness in the air.

9 Smallest Window Air Conditioners You Can Buy

Pros:

  • It restarts from where it was left in case of a power shortage
  • The dehumidifying ability is impressive
  • The temperature range is extended so it can be used in the summer and winter alike
  • The mesh filter can be washed and reused

Cons:

  • It only has 3 velocity settings
  • Some people find it too loud to sleep while it’s turned on





96%

Cooling capacity



98%

Energy efficiency



98%

Moisture removal



97%

Quiet operation




Ideal for small windows, this unit is also very quiet. Additionally, 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 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.

LG LW6017R Specifications Sheet

Minimum Window Height: 12” Window Width Range: 21” to 35”
Cooling Capacity: 6,000 BTUs Area Coverage: 260 sq. ft.
Power Rating: 520 watts Noise Level: 52 – 56 dB
Energy Efficiency Ratio: 11.3 Dehumidification rate: 1.8 pints/hour
Fan Speeds: 3 Air Direction Control: 2-Way
Included Window Mounting Kit: Warranty: 1 year

8. hOmeLabs AC-188

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Summary: Some people appreciate the simple design as they don’t like the hassle of touchscreens or push-button control panels. It does a good job lowering the temp on summer days but it’s not suitable for large rooms. Its biggest drawback is the lack of a remote that would make distance maneuvering a whole lot easier.

9 Smallest Window Air Conditioners You Can Buy

Pros:

  • It is very straightforward as it doesn’t have complicated features
  • The air filter is very large so it captures a lot of debris
  • The temp dial has 7 levels to pick between
  • It uses little energy to operate

Cons:

  • It doesn’t come with a remote control
  • It can’t cover very large areas as it has a low BTU and CFM
  • Very limited in settings





95%

Cooling capacity



98%

Energy efficiency



96%

Moisture removal



96%

Quiet operation




In case you don’t enjoy a big budget but still want to find a lasting solution to deal with the hot days, here is your go-to option. It is compact and lightweight, and it includes a mounting kit. It fits windows measuring 13” high and between 23” and 36” wide, so the standard frame should accommodate it properly.

This model is very simple in design and operation, so don’t expect it to blow your mind. It lacks a control panel with touch buttons or displays and offers in return a simplistic panel with two dials, one for selecting the temperature and one for the fan mode. It is fit for rooms up to 150 sq. ft., packing the same cooling capacity of 5,000 BTUs as the Friedrich CCF05A10A does. It has 7 temp settings to choose from and modifiable High or Low fan speeds that help it lower the ambient temperature in less than 15 minutes after turning it on. Once the desired temperature is achieved, it will stop and start automatically to maintain that level.

The top louvers can be moved to the right and left, thus allowing you to redirect the airflow to the areas that most need it. While it manages to take out some of the moisture from the air, it’s not one of its strong points. What it does achieve is to retain some of the dust and debris from the air thanks to the outsized mesh filter at the back.

hOmeLabs AC-188 Specifications Sheet

Minimum Window Height: 13” Window Width Range: 23” to 36”
Cooling Capacity: 5,000 BTUs Area Coverage: 150 sq. ft.
Power Rating: 460 watts Noise Level: N/A
Energy Efficiency Ratio: 11.1 Dehumidification rate: N/A
Fan Speeds: 2 Air Direction Control: 2-Way
Included Window Mounting Kit: Warranty: 2 years

9. Midea MWA06CR71-E

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Summary: It’s good for small rooms up to 200 sq. ft. or less, so don’t expect it to make wonders in large areas. Mounting is very simple as it comes with all the required components, including side panels to adjust to the length of various windows. It is comprehensive and all in all, does a good job for its cost.

9 Smallest Window Air Conditioners You Can Buy

Pros:

  • Low-consuming so you won’t have to worry about the bills
  • The remote includes a thermostat for more accurate temp settings
  • Also works as a dehumidifier
  • Includes side panels for stress-free mounting on any window

Cons:

  • It’s not very efficient in cooling 250 sq. ft. rooms as stated
  • The dehumidifier feature is not very helpful





96%

Cooling capacity



100%

Energy efficiency



95%

Moisture removal



98%

Quiet operation




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 36” 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.

Midea MWA06CR71-E Specifications Sheet

Minimum Window Height: 14” Window Width Range: 23” to 26”
Cooling Capacity: 6,000 BTUs Area Coverage: 250 sq. ft.
Power Rating: 700 watts Noise Level: 51.9 – 55.5 dB
Energy Efficiency Ratio: 12.2 Dehumidification rate: 1.27 pints/hour
Fan Speeds: 3 Air Direction Control: 4-Way
Included Window Mounting Kit: Warranty: 1 year

Alternative Small Windows ACs Worth Checking Out


Aside from the 9 models that we included in our top, there are a few other worthwhile small ACs that you should look into before you decide. We didn’t include them in the main ranking either because they came from the same brand as some of our picks, in some cases because of similarity issues, or simply because we considered their flaws more off-putting than those of our top selections. Nevertheless, these are high-performing products that deserve a chance, especially if you don’t find exactly what you’re looking for in our top. One of these alternative products might work better instead. So, here is a brief description of their capabilities and downsides:

9 Smallest Window Air Conditioners You Can Buy

#1. Soleus Air Exclusive 8,000 BTU Saddle



Installing this AC is as easy as it gets, there’s no denying it. Thanks to the saddle design, you simply have to slide it over the window sill. So there are no tools required for the setup or any modifications to the window. It’s a smart product that integrates numerous modern features. Likely the most impressive is the MyTemp sensor that you activate with the help of the remote control. When this feature is active, the AC cools the exact location in the room where you sit as long as you have the remote by your side. It even integrates multiple energy-saving features and functions to ensure it won’t cost you much to run it 24/7. These features include the programmable 24-hour timer, the Sleep mode, and the Energy Saver mode. It automatically restarts with your pre-selected settings after a power outage, so you don’t have to reinsert your preferred operating options whenever the power goes out and comes back on. Best of all, it produces only 38 decibels when it runs, which makes it perfect for the bedroom or nursery where you need utter quietness during sleep time.

Why we chose to leave it out: The cooling capacity of this product is very similar to that of the Windmill Smart Home AC, with the exception that the Soleus Air Exclusive costs considerably more. However, the price difference is understandable seeing how the Soleus comes with more features than its Windmill counterpart. If your budget allows you to purchase this product, we encourage you prioritize it.


9 Smallest Window Air Conditioners You Can Buy

#2. Midea MAW08V1QWT



This is an 8,000 BTU cooling capacity product that grants optimal performance when used in spaces of up to 350 square feet. It is very powerful, which is best seen in the fact that it blasts the cool air breeze up to 20 feet in front. The MAW08V1QWT is a smart air conditioner, another plus since its Wi-Fi connectivity and voice control let you change settings in a much more convenient manner from any location. A definite plus stands in the energy efficiency of this model, managing to consume 35% less power than similar AC units to keep running costs as low as possible. It has been awarded the Energy Star Most Efficient certification in 2022. Additionally, thanks to its U-shape design, you can open the window if you want to bring in fresh air from outside into your home.

Why we chose to leave it out: The compressor is a bit noisy. Nothing too distracting, but it does make installing this AC in the bedroom a bad idea since light sleepers will have trouble during nap time if the unit is turned on. In comparison, the Windmill Smart Home AC scored higher during tests when it came to noise output, and since both products have the same cooling capacity, we chose the Windmill over this Midea product.


9 Smallest Window Air Conditioners You Can Buy

#3. GE Profile ClearView AHTT06BC



One of the best options for cooling small rooms since it is rated to produce 6,100 BTUs of cooling power. Not to mention that the product is Energy Star certified for its low power draw, so you get to enjoy the perfect temperature indoors during torrid heat without spending a fortune on this perk. This is a smart AC, which is best seen in the fact that it features built-in Wi-Fi and allows voice control. Therefore, by simply installing the companion app on your smartphone, you can control it remotely no matter where you are. As for voice control, this feature lets you tell Alexa when and how to change the AC’s operating settings. To grant optimal cooling and thermal comfort, it provides three fan speeds and four cooling modes that you can pick from. Or, if you like, you can use it in Eco mode and let the unit automatically turn the fan and compressor on and off as needed to preserve your temperature while reducing running costs to a minimum.

Why we chose to leave it out: It’s a bit heavier than its competitors, which will pose an issue when you install it. In fact, because of the product’s weight, setting it up is a 2-person job. Another minor flaw is that the touch buttons are very sensitive. Beware that even slightly brushing your finger over a button’s surface will select that specific setting.


9 Smallest Window Air Conditioners You Can Buy

#4. GE AHEC05AC



Since this is a 5,000 BTU model, you can rely on it to provide optimal air cooling performance in areas of up to 150 square feet. Everything you need to set it up is included with the package in the window installation kit. Speaking of, installing it isn’t difficult at all. Even a first-timer can get the job done easily as long as they follow the provided instructions to a tee. You can adjust the pace at which it cools the room by simply turning the knob to the level you prefer. There are two fan speeds and two cooling modes provided, so you have your fair share of options in terms of operation customization. Furthermore, there are ten cooling speeds that you can pick from, so the unit is bound to perform exactly as you want it to thanks to this advanced customization.

Why we chose to leave it out: It’s noisier than our 5,000 BTU pick, the hOmeLabs AC-188, which is why we chose to include this model in the ranking instead of the GE product we talked about here. However, if you don’t intend to install the AC in the bedroom, this slightly noisier operation won’t pose any issue at all, so pick depending on where you want to set it up.


9 Smallest Window Air Conditioners You Can Buy

#5. LG LW8016ER



LG is known for the durability of the products it manufactures, and the LW8016ER makes no exception. This 8,000 BTU cooling capacity air conditioner is exactly what you need if you want a reliable product to tame temperatures in spaces of up to 350 square feet. While it might not be the quietest product we tested, it does still fare decently considering the 53 dB noise output. Thanks to the fact that it draws so little power when it runs, the product has been awarded the sought-after Energy Star certification. Needless to say, this is a major plus since it saves you considerable money. A remote is included to more conveniently change settings whenever you want to. Speaking of, you can pick from 3 cooling speeds and 3 fan speeds to customize the AC’s performance to your exact preference.

Why we chose to leave it out: We chose to include the LG LW6017R in our main ranking instead of the more powerful LW8016ER from the same brand since it comes at a more reasonable price. Moreover, we already have an entry with a similar cooling capacity as the LW8016ER, namely the Windmill Smart Home AC that we favored for its smarter design and features.


9 Smallest Window Air Conditioners You Can Buy

#6. Frigidaire FFRA051WAE



If you have a 150 square feet room that you want to keep cool during hot summer days and nights, you should definitely consider this budget-friendly model from Frigidaire. With a high airflow efficiency of 136 CFM and rated at 5,000 BTUs cooling capacity, it is bound to create perfect living conditions regardless of how hot the weather gets. It is very easy to install and use. We like the fact that it comes with an extra-long cord since this makes extension cords futile, so you won’t clutter up the room just to power on the AC. While it’s not the most feature-packed product on the market, it still integrates the useful automatic restart. What this feature implies is that the unit turns on with your pre-set settings after a power outage ends.

Why we chose to leave it out: We chose to include the Frigidaire FFRE063WAE in our top instead of this alternative Frigidaire model because of its slightly higher cooling capacity. Moreover, it is a bit more silent than the FFRA051WAE. Nevertheless, if you need an AC that covers smaller areas than our 6th entry and you want to stick with the Frigidaire quality guarantee, the FFRA051WAE is your go-to, hands down.


9 Smallest Window Air Conditioners You Can Buy

#7. Friedrich CCF05A10A


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The modern look of this Friedrich air conditioner makes it a fan favorite for its design. In terms of performance, since it is rated at 5,200 BTUs cooling power, you can count on it to provide optimal performance in spaces of up to 150 square feet. What we were very impressed by was the unit’s quiet operation that is granted by the QuietMaster technology it uses. In fact, this specific design element makes it approximately 25% quieter than similar-capacity ACs. It is compatible with Amazon Alexa, so you can use voice control to change settings. Moreover, since it features integrated Wi-Fi control, you can use your smartphone to turn it on or off, or change running speeds and modes from wherever you are, not only when you’re at home.

Why we chose to leave it out: Performance-wise, there was nothing wrong with the CCF05A10A. We simply considered including the Friedrich CP06G10B in our top because it works for slightly larger areas compared to the CCF05A10A. So, if you need an air conditioner that covers spaces of up to 150 square feet, this smaller cooling capacity model from Friedrich is one of your best options.


9 Smallest Window Air Conditioners You Can Buy

#8. Haier HWR06XCR


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One of the more simplistic models that we present, which makes it perfect for people who seek a hassle-free air conditioning unit. It is suited for spaces of up to 250 square feet seeing how it produces 6,000 BTUs of cooling. When it comes to adjustment, you can use the remote or the buttons on the control panel to switch between the three fan speeds and cooling speeds. Alternatively, you can set it on Auto mode so that it changes speeds as needed on its own to maintain your desired room temperature. For a more convenient operation, we recommend you opt for this running mode. On the small display, it can either show the time or temperature so that you can check these stats at a glance. It features 2-way air direction control, allowing you to pick where the cool air should go for optimal room coverage. The washable mesh filter that keeps dust and other air impurities from damaging internal parts is easy to access when routine cleaning is due. Additionally, all the hardware you need to install is included in the package.

Why we chose to leave it out: Compared to the Haier ESAQ406T that we ended up including in our top on the 5th position, the HWR06XCR from the same brand is a bit noisier. Another downside is that it draws less moisture from the air compared to the ESAQ406T. From all other performance points of view, these two Haier products boast the same performance. So make your pick depending on which design you favor and what product fits in with your budget better.



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 window 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 for 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 air conditioner?

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 water retreats.

Do window air conditioners circulate the 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 air conditioners 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 air conditioners 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 conclude. 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 Small Window AC for Sale: Whirlpool WHAW101BW

Suited for areas of up to 450 square feet due to its 10,000 BTUs cooling capacity, this Whirlpool entry is worth every cent not only for its heavy-duty cooling performance but also for its small footprint. It measures 21.5 inches in width by 19.8 inches in depth by 14.7 inches in height, so you can see why it qualifies as a small window AC. In fact, it’s suited for windows that measure at least 16 inches in height, and range from 26 to 36 inches in width. To top all this, we mention that it comes with a remote control, as well as the complete window mounting kit. Moreover, it features a 24-hour timer to give you full control over the unit’s operation.

Editor’s Choice: Haier ESAQ406T

Our favorite stands out through its excellent 6,000 BTUs cooling capacity and 12.2 efficiency ratio. This little AC can provide cool air for a room measuring up to 250 sq. ft. with a noise of 44 dB at low speed, 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 Small 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 Small 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.

Best Small 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.

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.
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