If you’re shopping for the best window air conditioners, you’ll want to prioritize the BTUs and energy efficiency rating. The BTUs will dictate the maximum area that can be cooled by a unit while the energy efficiency rating determines how efficiently a unit consumes power. Also, consider programmability. While most AC units come with 24-hour programmable timers, a WiFi-enabled unit may offer multi-day timers. Also, think about other features like ease of installation and a higher evaporation rate to make your air conditioner more useful.

After thoroughly reviewing countless reviews, we nominated the LG LW8016ER as our Top Pick. Keep reading to learn more about our selection criteria and to shop from our recommendations for the best air conditioners.

Top 10 Best Window Air Conditioners

 #1  LG LW8016ER Window Air Conditioner


WHY WE LIKE IT: 8,000 BTUs that can cool up to 340 square feet, with a 13 EER rating and auto-restart with settings memory makes this one of the best window air conditioners.

  • Auto-restart with settings memory
  • 8,000 BTUs for up to 340 sq ft
  • 13 EER
  • 52 dB output even in lowest speed may be loud

When you’re shopping for an air conditioner, you want something reliable and energy-efficient. The LG LW8016ER window AC unit is our Top Pick because we like that it has a solid 13 EER rating, which makes it incredibly energy efficient and one of the best window air conditioners. While it’s not an Energy Star-rated appliance, you’ll get 8,000 BTUs which can cool spaces as large as 340 square feet. This is a three-in-one solution for cooling, fan, and dehumidifying functionality.

You can switch between three cooling and three fan settings. You’ll also get four-way air deflection so you can precisely control the airflow. We like that this unit has an auto-restart feature that remembers the last entered settings in the event of a power outage. As is common, you’ll get a 24-hour programmable timer. However, at 52 decibels in the lowest setting, this window unit may be a bit loud for some users. You may prefer the best tower air conditioner that features a low sound output and white noise functionality.

 #2  Frigidaire FFRA0511R1E Window Air Conditioner


WHY WE LIKE IT: A straight forward air conditioner for more small rooms with an easy to install design and a solid 11.1 EER makes this the best window AC for people who want an easy to use unit.

  • 11.1 energy efficiency ratio
  • 5,000 BTU for up to 150 sq ft
  • 13 EER
  • Operation can be loud
  • Low evaporation rate of 1.1 pints/hour

For people trying to cool smaller rooms, you don’t need an air conditioning system that’s overly powerful. The Frigidaire FFRA0511R1E is a 5,000 BTU compact air conditioner that can cool rooms with a maximum square footage of 150. This pick comes with the installation kit (which is standard for window air conditioners) for mounting it in a window. We especially like the simplified control panel with rotary knobs, which makes this one of the best window AC choices for seniors or tech-averse people to use. You’ll also like the 11.1 EER rating, which while not the highest from our research, puts it in the upper tier for energy efficiency.

We like that this is a window-mounted air conditioner that’s a three-in-one solution with a dehumidifier feature. However, at 1.1 pints per hour for an evaporation rate, that’s on the lower end for this product category. Still, you’ll get two cooling speeds as well as two fan speeds. You can also wash the removable filter for improved air quality. . And pleated side panels help to create a secure fit and prevent air from leaking out of your window. Best of all, this is a compact solution for people with smaller window dimensions. Even with the best windowless air conditioner, you will need a unit that’s compatible with your needs and renovation limitations.

 #3  Frigidaire FFRS0822SE Window Air Conditioner


WHY WE LIKE IT: The quietest window air conditioner for sliding windows thanks to a 48.4-decibel output in the lowest speed and 8,000 BTUs of power to cool spaces up to 350 square feet.

  • 8,000 BTUs for up to 350 sq. ft.
  • 10.9 EER, 263 CFM
  • Lower noise output of 48.4 dB at lowest speed
  • Lower evaporation rate of 3 pints per hour

The Frigidaire FFRS0822SE is the perfect pick for people with sliding windows. is another great option from a reliable home appliance brand. This model offers 8,000 BTUs of power to cool rooms as large as 350 square feet. The 10.9 EER rating is in the median range for energy efficiency. And when paired with a higher 263 cubic feet per meter (CFM) air circulation rating, this is a fairly powerful selection. If you’re concerned about noisy units, this is one of the quietest window air conditioners from our research with a decibel output range from 48.4 to 55.1 depending on your speed setting.

This three-in-one casement air conditioner includes a dehumidifier setting that removes as much as three pints per hour or 72 pints per 24 hours. As is standard, you’ll get three fan speeds and a 24-hour programmable timer. Other key features include a sleep mode and a removable washable filter to improve air quality. There’s also a clean filter alert so that you know when it’s time to wash it. Additionally, you’ll get a remote control, as well as the installation kit so that you’re ready to go straight out of the box. The best air conditioner for sliding windows also comes with an installation kit and has a lower noise output.

 #4  Frigidaire FFRA051WAE Window Air Conditioner


WHY WE LIKE IT: An energy-efficient wallet-friendly air conditioner for smaller spaces up to 150 square feet, with a 5,000 BTU rating and an 11 CEER rating.

  • 11 CEER rating
  • 5,000 BTUs for up to 150 sq. ft.
  • Simple control panel
  • Lacks eco and auto mode

If you live in a more temperate climate where you might only need to turn an air conditioner on occasionally, it might not make sense to buy one of the more robust models which enhanced functionality like smart integration. The Frigidaire FFRA051WAE window unit is a simple solution for that shopper who only needs the AC a few days out of the year. Still, we like that it has an 11 CEER rating which is in the median range for energy efficiency.

With 5,000 BTUs, this unit can cool spaces up to 150 square feet. That makes it ideal for smaller rooms or bedrooms. The simple rotary dial controls are easy enough for anyone to use. You’ll get two fan speeds and two cooling speeds as well as adjustable louvers to redirect airflow where it’s needed most. As is standard, you’ll get the installation kit and a removable washable filter for increased air quality. However, there is no remote control, and you also don’t get an eco or auto mode. A control panel and useful remote control are fairly standard accessories that you will get in the best through the wall air conditioners.

 #5  Midea MAW12V1QWT Window Air Conditioner


WHY WE LIKE IT: An expertly designed air conditioner that cools rooms up to 500 square feet but doesn’t remove window functionality while having a 20-foot airflow depth and smart home integration support makes this the best window air conditioner for large rooms.

  • 20ft circulation depth
  • Alexa & Google Assistant integration supported
  • 12,000 BTU for up to 500 sq. ft.
  • Lacks supplemental heat

One of the biggest pain points with a window air conditioner is that once installed, you can no longer effectively open and close that window unless you remove the AC. The Midea MAW12V1QWT fixes this problem with a U-shaped design that allows you to open and close your window whenever you want. Of course, there is an included installation kit that helps to safely mount and secure your unit for peace of mind. The Midea u-shaped air conditioners are some of the most robust units we’ve seen which is why we think they have the best design concept. All of this makes it one of the best window air conditioners for large rooms.

You‘ll get 12,000 BTUs which is powerful enough for rooms up to 500 square feet. We also found the 20-foot airflow depth impressive. And with 42 decibels in the lowest mode, we think this is a great solution for people who find standard window air conditioners to be too noisy. This Energy Star certified unit is rated at 15, which is incredibly high for window air conditioners. More importantly, you also get Wi-Fi compatibility which means that this allows for smart home integration with Alexa and Google Assistant both being supported with this unit. This three-in-one AC unit includes a dehumidifier mode, three fan speeds, an energy saver mode, and a removable washable filter. The best central air conditioners will also focus on energy efficiency, feature single and double speeds, and programmability.

 #6  Midea MAW08V1QWT Window Air Conditioner


WHY WE LIKE IT: A u-shape design that doesn’t block window functionality and a 20-foot long distance airflow combine with smart home integration support for one of the most intuitive AC units from our research.

  • Design allows for increased functionality
  • 20-foot airflow distance
  • 8,000 BTU for up to 350 sq. ft.
  • Lacks supplemental heat

If you like the idea of a U-shaped air conditioner that gives you window access but need it for a smaller room, the Midea MAW08V1QWT is the answer to your problems. The included installation kit helps to reinforce the AC unit so that it’s still safely mounted and secure even when you open the window. This unit has 8,000 BTUs of power to cool rooms up to 350 square feet and a 476 CFM rating which is incredibly powerful.

You also get an impressive 20-foot airflow depth and a low 42-decibel noise output in the lowest mode. This is another Energy Star certified air conditioner with a high 15 CEER rating. For people focused on smart home integration, this unit can be connected via WiFi to Alexa or Google Assistant. Or if you prefer, you can use the proprietary MideaAir smartphone app. Other key features include a dehumidifier mode, three fan speeds, an auto and energy saver mode, and a removable washable filter with a clean filter indicator. The best portable air conditioners and heaters will also feature mesh or removable washable filters that keep the air clean.

 #7  Midea MAW06R1BWT Easycool Window Air Conditioner


WHY WE LIKE IT: A simple 6,000 BTU window air conditioner that can cool rooms up to 250 square feet with an automatic restart feature that remembers the last entered settings, making it great for college dorm rooms.

  • Automatic restart remembers settings
  • 6,000 BTUs for up to 250 sq ft
  • Remote included and LED control panel
  • Noisier operation from 51.8 to 56.8 dB

College dorms don’t always come with central air conditioning. So, if your college student is headed off to a dorm without air conditioning, you’ll want to invest in an easy to use and install air conditioner like the Midea MAW06R1BWT is the perfect solution. It has 6,000 BTUs which can cool up to 250 square feet. As is standard, this model comes with the installation kit to safely mount it in the window.

Another key feature is the 24-hour programmable timer as well as a sleep mode that keeps your room comfortable while also reducing energy consumption by slightly raising the temperature. This three-in-one solution includes a dehumidifier and an auto-restart function that remembers the last entered settings before a power outage. There’s also an EcoSaver setting to control power consumption. And you’ll also get a remote control although you can still choose to manage settings by operating the LED control panel. And in case you’re planning a camping trip, you should take a peek at the best portable AC for camping that will keep you cool in your tent or cabin.

 #8  LG LW1517IVSM Window Air Conditioner


WHY WE LIKE IT: A WiFi-enabled air conditioner that can remove up to 108 pints of moisture per 24 hours and an impressive 800 square foot cooling capacity.

  • Smart home integration supported
  • 3-in-1 with dehumidifier mode
  • 14,000 BTUs for up to 800 sq. ft.
  • Lacks supplemental heat

An intuitive air conditioner with plenty of “nice to have” features can take this appliance from a basic climate control solution to an intuitive device that makes your home more comfortable. The LG LW1517IVSM has some of the best features we’ve seen in all window air conditioners. At 14,000 BTUs of power, this unit can cool spaces as large as 800 square feet. Plus, it’s a three-in-one solution with an evaporation rate of 108 pints per 24 hours or 4.5 pints per hour.

We also like that this LG window air conditioner is a great quiet option with the ability to operate with sound output down to 43 decibels in the lowest setting. You’ll also appreciate that this is another smart-enabled device that can be integrated with smart home assistants or controlled through the proprietary LG ThinkIQ. The high 14.7 EER makes this a smart choice for energy efficiency. Other standard options include four cooling and four fan speeds, an auto function, a 24-hour programmable timer, four-way air deflection, and a washable and removable air filter. You may also want to integrate your AC unit into a smart home system with the best ductless mini-split air conditioner.

 #9  Friedrich Chill Premier CCF06A10A Window Air Conditioner


WHY WE LIKE IT: A Wi-Fi-enabled air conditioner that allows for up to seven days of preprogrammed controls for more energy efficiency to cool rooms up to 250 square feet.

  • 12.1 EER & Energy Star Certified
  • 6,000 BTUs for up to 250 sq ft
  • Smart home integration supported
  • Lacks supplemental heat

Pre-programming your air conditioner is one of the best ways to cut down on energy expenses. There’s no point in leaving your AC unit on the highest setting when the room is empty or no one’s home. So, we like the Friedrich Chill Premier CCF06A10A because it offers one of the best programmability features that we found in our research. Because it’s a WiFi-enabled appliance, you can program up to seven days of temperature presets with a maximum of four changes per day.

This 6,000 BTU device is ideal for rooms up to 250 square feet and offers a solid 12.1 EER rating. You’ll also appreciate that this is an Energy Star certified appliance for added efficiency confidence. Other common features include three cooling speeds, three fan speeds, a 24-hour programmable timer, and eight-way adjustable louvers for better airflow control. For options regarding a self-evaporative technology to remove condensation and purify the air, have a look at the best portable air conditioner for RVs.

 #10  Friedrich Kuhl KCQ10A10B Window Air Conditioner

Friedrich KCQ10A10B


WHY WE LIKE IT: A window or through the wall air conditioner with WiFi support that not only allows for connections to smart devices but allows for daisy chain connection with other Friedrich units for uniform controls throughout the home.

  • Supports through the wall installation
  • 10,000 BTUs for up to 450 sq. ft.
  • 250 CFM
  • Installation kit not included

Most people think of window air conditioners as stand-alone units that can’t be paired with other AC units. But we like the Friedrich Kuhl KCQ10A10B because it’s one of the few models we’ve seen that can not only be paired to smart assistant devices but also synced to other Friedrich air conditioners to create a cohesive air conditioning system. This 10,000 BTU unit can cool spaces up to 450 square feet. You’ll also get 250 CFM which is a higher rate for window air conditioners.

Other nice features that are ideal for families include a keypad lockout option which prevents little hands from messing with the settings. The widow kit also features EntryGard protection which helps to prevent kick-ins from would-be thieves. You’ll get an 11.1 EER, four fan speeds, and a dehumidifier that can remove up to 3.2 pints per hour or as much as a 76.8 daily evaporation rate. Auto-restart for last saved settings, airflow direction control, and a removable washable filter with a check filter indicator round out other key features with this model. For comparison with other units that feature a better energy efficiency score, have a look at the best LG air conditioners.

How We Decided

Window air conditioners are a fairly common appliance for people to buy, but these days they offer a wide array of functionality. To create our guide, we looked at the following key features — BTUs, energy efficiency, programmability, and additional features. In our guide, the BTUs ranged from 5,000 to as large as 14,000. This covers spaces as small as 150 square feet to as large as 800 square feet.

However, you’ll also want to prioritize energy efficiency. While not all air conditioners are Energy Star certified, you can also rely on the CEER/EER/SEER rating to determine how efficient an appliance will be. For window air conditioners, the range is usually between 10 to 15 with a rating of 15 being the most efficient. In our guide, we prioritized models that were 11 or higher.

While most air conditioners sold on the market today offer a 24-hour programmable timer, a WiFi-enabled unit that can support smart home integration can offer wider functionality. We were able to find units that even allowed for up to a week of programmability with the option to make individual daily adjustments. And in some cases, WiFi-enabled air conditioners supported daisy chain connectivity so you can control multiple window air conditioners at once through your smartphone or smart home assistant.

And finally, additional features like a modern u-shape design that allowed for window accessibility, and high evaporation rates can make a unit more intuitive and functional for your daily life.

Best Window Air Conditioners Buyer’s Guide

The Most Important Factors to Consider

  1. BTU Rating
    An air conditioner’s BTU rating is one of the most important specs that you should consider. It stands for “British Thermal Unit” and describes how effectively an AC unit can remove heat from a room. The BTU rating is proportional to the size of the room where you’ll install your air conditioner. BTUs can range from as small as 5,000 to as large as 25,000 for window units. But also consider how other factors like exposure to direct sunlight might mean that you need more BTUs to effectively cool a room.
  2. Energy Efficiency Rating
    Window air conditioners can cause a spike in energy bills — especially if they’re not the most efficient models. Always focus on the Energy Efficiency Rating (EER) which is sometimes also listed as SEER. And for added peace of mind, prioritize models with the Energy Star logo which means that the unit meets standards as set forth by the U.S. government to be efficient and reduce pollution emissions.
  3. Programmability
    Most air conditioners come with a 24-hour programmable timer. This means that you can preset cooling modes, temperatures, and fan speeds. The upside is that you can reduce power consumption when the house is empty or it’s cooler outside, while also ensuring that you never come home to a sweltering house. Some air conditioners also support smart assistant integration for truly remote management even if you’re not at home. However, these models tend to cost more for that intuitive upgrade.
  4. Manual Controls
    While most air conditioners come with a physical remote control, you also want to make sure that the control panel has a user-friendly interface that’s easy to use.
  5. Additional Features
    Other key features that can make your window air conditioner more functional include auto and eco modes, as well as a sleep mode which can reduce consumption during the overnight hours while also operating more quietly. A dehumidifier can be a nice way to reduce the room temperature in a lower power consumption mode. And for some people, supplemental heat can be helpful if you live in a more temperate climate where you only need to occasionally heat a room.

Window Air Conditioners FAQs

Is it cheaper to use window air conditioners?

Yes and no. In the long run, central air or even ductless mini-split air conditioners are more efficient and require less energy consumption than a window air conditioner. However, since most window air conditioners come with 24-hour programmable timers or can be integrated for control through smart assistant devices, it’s possible to consume less power in the long run. Likewise, with window units, you can limit power consumption to occupied rooms so that you’re not needlessly cooling empty spaces.

Do window air conditioners work better than portable air conditioners?

The question isn’t which works better, but which is better for your needs. Both portable and window air conditioners work similarly by pulling in heat and releasing cool air. Window air conditioners tend to be quieter than portable AC units and occupy less interior space since they sit in a window rather than taking up floor space. However, keep in mind that window units have more complex installation and need to be properly secured — especially if you’re installing the unit on a higher floor.

Is it OK to leave a window AC on all day?

You can operate your window air conditioner with confidence, even if you leave it on all day. None of the components will overheat or get damaged. However, for the best efficiency, you shouldn’t leave your air conditioner on full blast as this will eventually cause premature wear. Instead, if you’re thinking of operating your AC unit all day, put it in eco or auto mode so that it can adjust power consumption once the desired temperature is reached.

How long should a window AC last?

With proper care and maintenance, a quality window air conditioner should last from eight to 10 years.

Dorian Smith-Garcia

Dorian Smith-Garcia is a bridal and beauty expert/influencer and the creative director behind The Anti Bridezilla. She is a diverse writer across beauty, fashion, travel, consumer goods, and tech. She also writes for Inverse, Glowsly, and The Drive along with a variety of other publications. When Dorian's not writing she's collecting stamps in her passport, learning new languages, or spending time with her husband and daughter.

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