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14 Best Rated Casement Window Air Conditioners

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Models Considered

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Hours of Research

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Consumer Reviews Analyzed

I sn’t summer great? The birds are chirping, people are happier, but this doesn’t necessarily go for everyone as you are dealing with excessive sweating and torrid heat. However, with the addition of an AC system, you won’t need to worry your mind about these problems anymore as you can finally preserve a cool environment indoors.

Similar to a small window AC system, window casement systems are very easy to use and mount, so professional training or tools aren’t a requirement to set them up. Aside from this, you will find that their power delivers the needed efficiency to keep the space cool, while the smart features ensure excellent expediency.

Silent nights are the secret to a healthy body that boasts vigor, making the most of every day. Check out the quietest window air conditioners of the moment and start sleeping comfortably, away from fan noises and unbearable heat.

14. Emerson Quiet Kool EARC5MD1

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Specifications:
  • Cooling capacity: 5,000 BTUs
  • Room coverage: 150 square feet
  • Fan speeds: 2
  • Operating modes: Cool, dry, fan-only
  • Air direction control: 8-way
  • Energy efficiency ratio: 11.0
  • Moisture removal: 1.3 pints per hour
  • Noise level: 50 dB
  • Included installation kit:
  • Dimensions: 14.6” x 21.5 x 19.7”
  • Weight: 36.7 pounds
  • Warranty: 1 year full, 5 years for the sealed system




Rated at 5,000 BTUs, which ultimately makes it able to cover upward to 150 sq. ft., the Emerson Quiet Cool is made all the more appealing by the fact that it displays 8-way airflow louvers to grant full command over air direction. Additionally, it ensures even air delivery from one corner to another to ensure the whole area receives the same treatment.

Effortless Mounting Procedure

The instructions are quite straightforward and the kit is included with the acquisition so that you can go ahead and set it up as soon as the box arrives at your door. Among its highpoints, we identify:

  • Refrigeration Speeds2 levels provided for customizable comfort
  • Fan Speeds – Set it on low or high and get full control over its action
  • Self Restart – You will never have to check on it after a power surge
Versatile Operation

If your AC doesn’t offer multiple handling settings, it may be difficult for you to attain the preferred indoor ambiance. Nevertheless, this unit isn’t among them, as it comes with a detailed control panel that permits you to employ one of the numerous preset functions or decide the temperature value toward it should work. Besides, it has a dampness removal function that allows it to draw up to 1.3 PPH, lessening the peril of mold formation.

With a CEER assessment of 11.0, it can be regarded as an economical model, as it preserves a good report between its potential and costs. While it may get a bit expensive to constantly run it at maximum speed, if you make a habit of running it on the Energy Saver mode, you will, in time, make considerable energy savings.

Just as resourceful as the models presented in this top, vertical window air conditioners have the advantage of being easy to mount and stress-free to move. Give them a try and start enjoying refreshing coolness even during the most torrid summer nights.



13. Keystone 5,000 BTU

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Specifications:
  • Cooling capacity: 5,000 BTUs
  • Room coverage: 150 square feet
  • Fan speeds: 3
  • Operating modes: Cool, dry, fan-only
  • Air direction control: 2-way
  • Energy efficiency ratio: 11.2
  • Moisture removal: 1.3 pints per hour
  • Noise level: 49 dB
  • Included installation kit:
  • Dimensions: 12.5″ x 16.25″ x 39″
  • Weight: 39 pounds
  • Warranty: 1 year full, 5 years for the sealed system




With a medium coverage power given by its 5,000 BTUs, this model is a good match for bureaus and bedrooms occupying a surface of up to 150 sq. ft. The first element that shows the quality of its structure is the casing, which is sufficiently tough to resist dust and moistness and shield the interior components. On the frontal side, you will notice the control panel, which offers buttons for every function and mode, allowing for easy customization. It also comprises a system of LEDs that signal upkeep necessities and the functions in use.

Dehumidifier Capabilities

In some areas, summers can be particularly humid, and this effect reflects in the room’s comfort, which is usually considerably decreased by this issue. While the most efficient solution, in this case, is a dehumidifier, an AC can also prove worthy, as the execution of these machines implies dehumidification. This unit has a rate of 1.3 PPH, which is pretty advantageous since it comes at an equitable price. It is essentially adequate to guarantee that mold won’t develop on the surfaces and infest the house with its illness-causing spores.

You can decide how fast the air should be chilled and, for this purpose, you have 3 speeds available. A set of 2-way louvers will help you point the airflow to the spots where your activity usually happens, thus amplifying the results. Furthermore, if you want the unit to stop somewhere in the middle of the night but you don’t want to wake up and power it off by hand, you will appreciate its timer, which has an action span of up to 24 hours.

Buying Guide
  • Airflow Rating – High speed: 129 cu. ft., medium speed: 112 cu. ft., and low speed: 100 cu. ft.
  • Noise – High speed: 55 dB, medium: 52 dB, and low speed: 49 dB
  • Cord Length – 6.4 feet
Reasonable Costs

If you want to run it non-stop, you can do so as the energy saver mode ensures it won’t draw much power so that costs are kept to a minimum. The assessed annual cost is approximately $40, so you are likely to not feel a major disparity regarding the costs (it is actually 11.2 rated for energy efficiency). Some of its qualities are:

  • Self Restart – If you face a power cut, it mechanically restarts with the pre-selected settings
  • Temperature Detecting Remote – Lets you check, set, and preserve the temperature regardless of where you stand in the room
  • Antibacterial Filter – It is washable and can capture contaminating particles from the air to leave it fresh and clean

It has been impartially tested to demonstrate its safety, the UL listing certifying that you can run it without fear that unwanted incidents might happen down the road due to poor design or manufacturing.

For small chambers or offices, take a look at the smallest window air conditioners you can acquire at the moment. They will leave enough space for the light to enter and won’t bother you at all, as they have incredibly low sound levels.



12. Keystone KSTAW06B

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Specifications:
  • Cooling capacity: 6,000 BTUs
  • Room coverage: 250 square feet
  • Fan speeds: 3
  • Operating modes: Cool, dry, fan-only
  • Air direction control: 2-way
  • Energy efficiency ratio: 11.2
  • Moisture removal: 1.5 pints per hour
  • Noise level: 49 dB
  • Included installation kit:
  • Dimensions: 15.7” x 18.5” x 13.4”
  • Weight: 52.8 pounds
  • Warranty: 2 years




ACs add to the power bill, and they are typically not cheap to run. Yet, this mostly applies to older units that have not been tested and rated for energy efficiency. With an 11.2 EER rating, this unit is positively among the economical models, since it can produce up to 6,000W without drawing a lot of power.

Customizable

It displays electronic controls that let you use it confidently, even if you don’t have previous involvement with these types of systems. Thus, it won’t be difficult for you to pick one of the three incorporated speeds, which will deliver the desired extent of coolness as fast as you decide. A nice advantage is that it can also be used without cooling proprieties, on the “Fan” mode offering just air circulation. This function can prove beneficial in the winter, as it can circulate the warmness produced by the stove and create an even temperature inside. It can be used in warmer days as well to freshen up the air and help you get rid of cooking smells or smoke. Both the fan and the cooler come with three individual speeds, so there’s enough room for customization here.

If you are worried that maintaining it running all day may result in high expenses, you can let these worries pass as it integrates an Eco-friendly mode that will keep it operating at minimal speed for as long as you like without overburdening you with energy expenses.

The dehumidification function is appreciated by most purchasers who struggle to keep their homes mold-free, so, if this is your case, you can definitely make use of the 1.5 PPH moisture removal rate.

Automatic Restart

After a blackout, it recommences with the pre-selected settings to upkeep comfort levels without demanding you to reset them. It comprises an LCD remote that flaunts temperature-sensing capabilities, so you can check the parameters from wherever you are in the room, and even adjust settings as you please, all without having to move an inch. Its particularities involve:

  • Sleep Mode – When this mode is activated, it gradually adapts the fan speed to make as little noise as possible so that you can rest with the unit running in the same room as you
  • Mesh Filter – Removes large pollutants such as dust, pollen, or pet dander
  • Timer – It will help you get perfect cooling without consuming more energy than necessary

It comprises a filter, but you needn’t concern about keeping a maintenance schedule separately as the LED light signals when cleaning/changing is due. Another interesting aspect stands in the fact that the mounting kit is comprised at no extra fee, so as soon as you receive the box you can progress to the installation.

Natural light can have a significant influence on your well-being, so you should try letting in as much of it as possible. A through-the-wall air conditioner can help you preserve coolness inside your room without sacrificing natural light or space.



11. Frigidaire FFRE0633S1

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Specifications:
  • Cooling capacity: 6,000 BTUs
  • Room coverage: 250 square feet
  • Fan speeds: 3
  • Operating modes: Cool, dry, fan-only
  • Air direction control: 8-way
  • Energy efficiency ratio: 12.2
  • Moisture removal: 1.3 pints per hour
  • Noise level: 51 dB
  • Included installation kit:
  • Dimensions: 15.5” x 13.4” x 18.5”
  • Weight: 44 pounds
  • Warranty: 1 year full, 5 years for the sealed system




This 6,000 BTU system is compact enough to fit even awkward-size windows, all while its cooling potential makes it apposite for spaces of up to 250 sq. ft., ensuring it won’t take long for the room conditions to reach your chosen setting. It is an economic model that is rated 12.2, so you can rest assured knowing that its operation won’t cost you a lot.

Antibacterial Mesh Filter

It comprises a reusable filter that will reduce microorganisms as it captures them while circulating the air. This makes it a viable choice when flu season comes, as, with fewer microorganisms floating around, the probabilities for you to catch the illness while at home or the office are reduced.

Even if the filter doesn’t need to be changed, note that it still needs to be cleaned periodically. To make things easier, the unit presents a LED light that activates when the filter is too dirty and requires maintenance.

At night, you will be able to experience a good sleep as the Sleep Mode can watch out for the room, preserving it fresh, all while preserving a low sound level. The dehumidifier function continues to run as well, helping draw up to 1.3 pints of water per hour.

Expediency in Use

It features ready-select buttons that let you set the option you desire at the touch of a button so that regardless of how inexperienced you are, proper use won’t be much of a hassle. Another convenience-enhancing aspect stands in the comprised remote that lets you modify settings from across the room. Moreover, it emits only 51 to 55 dB when it runs, so chances are slim that you will even hear it run.

If you live in a dryer area, an AC can actually make the interior environment worse by decreasing the humidity even more. Consider investing in an evaporative air cooler and make certain the air stays humid enough not to affect your health.



10. Arctic King AKSC08CR61

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Specifications:
  • Cooling capacity: 8,000 BTUs
  • Room coverage: 350 square feet
  • Fan speeds: 3
  • Operating modes: AC, dry, automatic, Energy Saver, sleep
  • Air direction control: 4-way
  • Energy efficiency ratio: 11.4
  • Moisture removal: 0.9 pints per hour
  • Noise level: 48 dB
  • Included installation kit:
  • Dimensions: 15″ x 21″ x 24″
  • Weight: 72.4 pounds
  • Warranty: 1 year




Paralleled to the previous models, it presents a higher cooling potential, namely 8,000 BTU, being fit for bigger rooms where it can perform its operation fast and with utmost efficiency, using simultaneously the moisture draw function, which can draw up to 0.9 PPD. The noise it releases varies with the speed, but, since that the highest level it can attain is 54 dB, we would say it is safe to keep it running while sleeping.

Multiple Modes
  • Dry – Chills the air and eliminates excess moistness
  • Auto – The “Follow Me” technology allows it to alter speeds on its own so that it conserves the ideal conditions without needing you to interfere
  • Sleep – It regulates its settings automatically as you sleep to ensure a fresh environment without creating too much noise
  • Energy Saver – When the condenser stops cooling the air, the fan stops operating as well, after a few minutes activating to check the parameters and see if settings are OK or adjustments need to be made

It comprises a filter, so you won’t only benefit from a cool, pleasant living environment, but breathe in purer air as well. The filter necessitates routine cleaning when dirt accumulates, to be specific, but you don’t have to figure out when you must clean it as the LED light will let you know. Besides, you are provided easy filter access for straightforward maintenance.

Versatile Design

The cooling potential makes it apposite for spaces from 300 to 350 sq. ft. The speed is adaptable, and you get three preset levels that will guide you in obtaining the most comfortable environment. Furthermore, it comprises a timer, so it allows you to establish for how long it should run and thus reduce unnecessary energy intake. This function can be scheduled to turn off the system after 1 to 24 hours of use.


9. Koldfront CAC8000W

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Specifications:
  • Cooling capacity: 8,000 BTUs
  • Room coverage: 350 square feet
  • Fan speeds: 3
  • Operating modes: AC, fan-only, dry
  • Air direction control: 4-way
  • Energy efficiency ratio: 11.0
  • Moisture removal: 2.1 pints per day
  • Noise level: 51 dB
  • Included installation kit:
  • Dimensions: 14.5” x 20.8” x 23.5”
  • Weight: 75 pounds
  • Warranty: 2 years




It is ready to tackle heat in rooms up to 350 sq. ft., where it can employ the intensity of 8,000 BTUs to replace warm and stale air with a chiller wind. Finally, you will rest properly, work, cook, do your yoga or other daily activities you struggled to go through due to high heat. Your kids will be less agitated and your pets will gladly enjoy the breath of fresh air.

It installs easily and you will find everything you need in the box.

Efficient and Innovative
  • Speeds – The 3 settings allow you to run it day and night
  • Dehumidifier – It draws the surplus of water quite fast and uses an auto-drain method to dispose of it so that you won’t have to tend to this task
  • Automatic – In case of a blackout, it will by design turn back on with the memorized functions so you don’t have to input them again
Easy Upkeep and Operation

Expediency is sought when it comes to these models, as all purchasers are interested in intuitive controls that can make operation more straightforward. Fortunately, this is exactly what this model offers, incorporating a digital display that shows essential info related to the functions and modes that are accessible or active. Besides, for extra lazy afternoons, you have a remote at your disposal that can help you control it without renouncing your comfy spot on the couch. It can even help you economize through an integrated timer that can stop the unit’s action after up to 24 hours.

8-way Air Dispersion

For level air delivery, you can control it to flow in 8 different directions. Henceforth, you will have it where you need it the most. Its characteristics are:

  • Speeds – The airflow can be altered from low to high by selecting one of the three preset speeds
  • Timer – You can decide the moment when the unit should stop by programming the timer to pause its action after up to 24 hours
  • Safe – The unit is UL and CUL certified

A big bonus is the built-in air ionizer, which acts as a filter that never needs to be replaced. Quick account of the technology, it uses negative ions that are released into the air and stick to the floating elements, making them heavier. Thus, dust, pollen, and others are forced to go down on the floor, leaving the air safe to breathe.

Affordable For All

The 11.0 EER ensures this is a cost-efficient system that won’t run a hole through your wallet, even if you run it unceasingly. Moreover, it comprises the hardware so you won’t have to make any additional purchases.


8. Frigidaire FFRS0822S1

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Specifications:
  • Cooling capacity: 8,000 BTUs
  • Room coverage: 350 square feet
  • Fan speeds: 4
  • Operating modes: Cool, fan-only, Energy Star
  • Air direction control: 4-way
  • Energy efficiency ratio: 10.9
  • Moisture removal: 3 pints per hour
  • Noise level: 48.4 dB
  • Included installation kit:
  • Dimensions: 14.2″ x 23.5″ x 20.2″
  • Weight: 79 pounds
  • Warranty: year full, 5 years for the sealed system




It works for areas of up to 350 sq. ft. and is custom-made for casement or sliding window fitting. It employs 8,000 BTUs, and it effortlessly maintains the home cool without adding to the electricity bills excessively.

Highly Practical

It has plenty of convenient features to fit your needs. The remote lets you select your settings with ease from afar. Other highpoints are:

  • TimerProgrammable for up to 24 hours, it lets you set it to run whenever you find the most suitable time for your needs
  • Auto-Cool – When temperatures surpass normal levels, the unit will instantly change to a higher speed
  • Air Path – To provide cool air all over the room, it features numerous air directions so every room corner is covered
  • Filter Indicator – Signals when the upkeep is due
Versatile and Expedient

It’s powerful yet quite cost-efficient. It has a moisture elimination capacity of 3.0 pints an hour so it lowers excess moisture with ease and guarantees mold won’t harbor in the room. Some of its traits are:

  • Multi-Speed – Cools within minutes if you set it on the higher operating speeds
  • Multi-Modes – Pick between fan only, energy star, and cool
  • Mesh Filter – Reduces contaminants and smells from the air

7. Global Industrial Air Conditioner

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Specifications:
  • Cooling capacity: 10,000 BTUs
  • Room coverage: 450 square feet
  • Fan speeds: 2
  • Operating modes: Cool, dry, fan-only
  • Air direction control: 4-way
  • Energy efficiency ratio: 10.4
  • Moisture removal: 2.5 pints per hour
  • Noise level: 59 dB
  • Included installation kit:
  • Dimensions: 20-7/8” x 14-5/8” x 23-1/2″
  • Weight: 85 pounds
  • Warranty: 5 years




It is rated at 10,000 BTUs so it will easily chill an area of 450 sq. ft. If you’re on a budget, consider it as it can cover a large space while consuming minimal energy. Furthermore, it can draw excess dampness, more precisely 2.5 pints/hour.

4-way Air Direction

It lets you decide air distribution direction so that full coverage of the room is granted. It includes interesting features like:

  • Auto-restart Mode – It picks up from where it left off after a blackout
  • Sleep Mode – Suited for use when you hit the sack as it adjusts operational speed levels to ensure you won’t be bothered by the system
  • Timer – Lets you set its operational period beforehand to reduce running costs
Numerous Accessories Included

To prevent further expenses, it comes with numerous accessories that you can benefit from. Within the box, you will find the “Follow Me” remote so you can alter the settings from the distance. Other convenience features include:

  • Mounting Kit – Install this AC without the help of a specialist as the kit and manual are included
  • LED Display – It allows you to inspect its functioning and will stay lit so you can see what interests you even in the dark

You will also receive 5 years of free coverage. If the unit’s quality no longer meets the described criteria, the manufacturer will either cover the reparation costs or replace it with a new unit.


6. Frigidaire FFRA1022R1

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Specifications:
  • Cooling capacity: 10,000 BTUs
  • Room coverage: 450 square feet
  • Fan speeds: 3
  • Operating modes: Cool, dry, fan-only
  • Air direction control: 8-way
  • Energy efficiency ratio: 10.9
  • Moisture removal: 2.7 pints per hour
  • Noise level: 55 dB
  • Included installation kit:
  • Dimensions: 21.5″ x 19″ x 14.5″
  • Weight: 69 pounds
  • Warranty: 1 year full, 5 years for the sealed system




Even though it’s compact, the 10,000 BTUs potential makes it a fierce option for battling torrid summer days. Moreover, it makes it fit for spaces of up to 450 sq. ft., ensuring the right temperature is reached in minutes. The EER is 10.9 to let you run it non-stop without stressing over costs.

Versatile Functionality

It features customizable controls. Hence, you can effortlessly adjust it to match your room’s dimensions. Its highlights are:

  • Dehumidifier – The action of the AC results in a dehumidification function as well, which can draw a peak of 2.7 PPH, higher than most competitors can
  • Speeds – Select among the 3 cool and 3 fan speeds
  • Airflow – Position the louvers in 8 different ways to direct the air in whatever way you want it
Notable Characteristics
  • Peak Window Height – 15-1/2”
  • Window Width – 23” – 36”
  • Capacity – (High): 285 CFM (Med): 243 CFM (Low): 221 CFM
Safe and Certified

It has been impartially tested and proven to be efficient, as well as safe to run. The certificates it comes with count CUL SA11087, ADA Compliant, UL Listed.


5. GE AEM10AX

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Specifications:
  • Cooling capacity: 10,000 BTUs
  • Room coverage: 400 square feet
  • Fan speeds: 3
  • Operating modes: Cool, dry, fan-only
  • Air direction control: 4-way
  • Energy efficiency ratio: 12.2
  • Moisture removal: 2.8 pints per hour
  • Noise level: 52 dB
  • Included installation kit:
  • Dimensions: 15-3/4″ x 21-11/32” x 21-1/4”
  • Weight: 64 pounds
  • Warranty: 1 year




The 10,000 BTUs system cools within minutes a space up to 400 sq. ft. This is an Energy Star confirmed model with an evaluation of 12.1 CEER. Hence, it will quickly and efficiently deliver cool air without considerably impacting your power bill. To limit further investment, the mounting kit is also included.

Electronic Digital Thermostat

You get full control over the parameters of the room with this feature. The thermostat will ensure that it will keep optimal comfort levels continuously. Some of its highpoints include:

  • Timer – You can select the number of hours it should run with a span of up to 24 hours
  • Speeds3 speeds mean 3 airflow levels and better customization
  • Modes – Set it to work either on Eco, Sleep, or Fan mode
  • Louvers – It presents a 4-way air track
Notable Features
  • Suitability – Peak window height 18-1/6”, window width between 24” to 36”
  • Noise – It will produce a noise level of 52 decibels
Dehumidification Mode

It will draw the surplus of water from the air so you will always feel comfortable. The 2.8 pts./hr. capacity will exclude the likelihood for mold spores to form or to spread. One of the main advantages it shows is that it has been impartially tested and awarded UL, CUL, and AHAM certifications. It is even California Prop 65 approved.

Besides, it comes with generous assurance periods. For both labor and parts, you will receive a 1-year limited service contract. Hence, if it no longer works according to your standards, you can send it back.


4. PerfectAire 3PASC10000

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Specifications:
  • Cooling capacity: 10,000 BTUs
  • Room coverage: 450 square feet
  • Fan speeds: 3
  • Operating modes: Cool, fan-only, dry, automatic
  • Air direction control: 4-way
  • Energy efficiency ratio: 10.4
  • Moisture removal: N/A
  • Noise level: 61 dB
  • Included installation kit:
  • Dimensions: 23.5″ x 14.5″ x 20.5″
  • Weight: 72 pounds
  • Warranty: 1 year




Strongly-built, with a hardwearing casing that delivers good protection against moisture and dust, this unit easily gets installed in windows that have a width of at least 15.5” and up to 16.2” and a height from 21.2” to 39.5”. The speeds let you use it in variate conditions, while electronic controls are intuitive to suit use even by those who are uninitiated. The slide-out filter is easy to remove, front-mounted and implies hassle-free upkeep.

Adaptable

The self-restart helps it repower with the pre-selected settings. Furthermore, what makes it a truly valuable asset is the 10,000 BTUs power, which can deliver incredibly rapid cooling. Thus, it only needs 10 to 15 minutes to take away heat in a large room, so you can just power it on as you get home from work and start relaxing in a fresh atmosphere sooner than you would have expected.

The buttons are positioned in an easy-accessible spot and are intuitive so you can simply select the desired mode or speed. Plus, the sound is almost unnoticeable and many purchasers reported not even being aware that it is running.

Remarkable Features
  • Save money as it employs an eco mode
  • The display is easy to read even by those who aren’t tech-savvy
  • The filters are permanent, which reduces upkeep costs considerably
  • The exhaust control moves the air to prevent staleness
Comprehensible and Versatile

As it has up to 10,000 BTUs, you can basically use it to cool any indoor space that comes to mind. Use the following modes for quick programming:

  • CoolMostly used for spot cooling during torrid summer days
  • FanProvides a continuous circulation of fresh air to reduce air dampness
  • DryPerfect for spaces with excess moistness issues
  • AutoAdjusts its operation to suit the temperature setting you select

3. Frigidaire FFRS1022R1

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Specifications:
  • Cooling capacity: 10,000 BTUs
  • Room coverage: 450 square feet
  • Fan speeds: 3
  • Operating modes: Cool, fan-only, Energy Saver
  • Air direction control: 4-way
  • Energy efficiency ratio: 10.4
  • Moisture removal: 3.4 pints per hour
  • Noise level: N/A
  • Included installation kit:
  • Dimensions: 14.5″ x 20.2″ x 23.5″
  • Weight: 84 pounds
  • Warranty: 1 year full, 5 years for the sealed system




Trustworthiness is the first quality of every Frigidaire model, and this unit surely doesn’t disappoint. Displaying a total of 10,000 BTU, which are sustained by a strong but quiet motor, it is a great match for every area that measures up to 450 sq. ft. It will take a lot of moisture from the air, more precisely up to 3.4 PPH, a trait that reflects its capacity to function in large spaces.

Fully Controllable Operation

You can make it run according to your likings as it has plentiful settings from which you can choose. This includes:

  • Air Flow – The 4-way air direction means that each corner of the room will be provided with cold air to eliminate hot spots
  • Speeds3 levels are put at your disposal to select from
  • Thermostat – Selectable range from 60 to 90 degrees Fahrenheit
Customizable Performing

It is a complex system that offers you the possibility to make use of all its advantages. Thus, you get different moods that can help you create the desired atmosphere without getting through a lot of trouble. The main mode can be activated by pressing the “Cool” button. This action will start circulating the refrigerant through the system and draw the hot air in to eliminate the heat, discharging it fresh and with a considerably lower temperature. The “Fan” mode keeps distributing the air but doesn’t make use of the refrigerant anymore, so it can be used to dispose of cooking smells or smoke. For a cheaper run, you have the “Energy Saver” mode, which keeps the unit running at the lowest speed, offering a better report between performance and costs.

Simple Installation

It is apposite for openings that measure between 15.5-inch to 16.2-inch in width with a height measuring between 21.5-inch to 40-inch. Besides, you will get the full mounting kit to help you set it up faster without having to visit the hardware store.


2. Friedrich Chill CP10G10B

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Specifications:
  • Cooling capacity: 10,000 BTUs
  • Room coverage: 450 square feet
  • Fan speeds: 3
  • Operating modes: AC, dehumidifier, fan-only
  • Air direction control: 4-way
  • Energy efficiency ratio: 11.3
  • Moisture removal: 3 pints per hour
  • Noise level: 50 dB
  • Included installation kit:
  • Dimensions: 22.2″ x 23.6″ x 15″
  • Weight: 81 pounds
  • Warranty: 1 year full, 5 years for the sealed system




Though it uses minimal energy, it has a potential of 10,000 BTUs. Therefore, it can cover up to 450 sq. ft. with ease. In fact, it is Energy Star rated, so its operation minimizes environmental impact, doesn’t put a strain on your wallet, all without sacrificing performance. As it has a high capacity, it is often used for home and light commercial needs.

Antimicrobial Air Filter

It will not only deliver cool air, but it will clean it of airborne particles as well. The filter is reusable to cut down on upkeep costs as much as possible. Some of its design highpoints include:

  • Air Flow – The louvers sway from left and right during cooling to eliminate the possibility of hot spots
  • Auto Restart – Useful when power shortages occur, as it saves the last settings and restarts the unit as soon as the power is back
  • Timer – It lets you command the period of its operation
Mention-Worthy Features
  • Suitability – For vertical windows that measure a minimum width of 25.25” to a maximum width of 39”
  • Accessories – The remote and the mounting kit are comprised at no extra price
  • Safe – It doesn’t produce Ozone, which makes it safe for extensive use
  • Dampness Removal – It will draw 3 PPH of excess moisture
  • CFM – Flaunts rating of 300 CFM
  • Side Curtains – They ensure a tight fit to reduce exterior noise and light

EntryGard protection ensures easy and safe mounting that can be performed quickly and without the risk of free spaces being left, which could influence the action of the unit by leaving the outside air in. Plus, the 6’ cord makes it even easier to place the unit in a steady position.


1. Amana AMAP151BW

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Specifications:
  • Cooling capacity: 15,000 BTUs
  • Room coverage: 700 square feet
  • Fan speeds: 3
  • Operating modes: Cool, dry, fan-only
  • Air direction control: 8-way
  • Energy efficiency ratio: 11.9
  • Moisture removal: 3.52 pints per hour
  • Noise level: 56 dB
  • Included installation kit:
  • Dimensions: 25.4” x 23.6” x 17.9”
  • Weight: 105.8 pounds
  • Warranty: 1 year




It employs 15,000 BTUs to cover up to 700 sq. ft. The on-board electrical panel and the digital display will allow you to set it with ease, even if you’ve never had a product of this type before.

Expedient Use

Select between Eco and Sleep mode for noiseless and cost-efficient operation. The timer can help you economize by programming the unit to stop after several hours, up to 24.

A filter is encompassed, having two purposes. The first one targets the motor’s protection, as airborne particles are sieved and kept away from the system’s mechanism. Conversely, the second purpose is to protect your health, as the cooled air is released free of pollutants, and is, thus, cleaner and safer to breathe.

As the filter is permanent, you won’t have to deal with replacements. Nonetheless, periodically, you will need to arm yourself with a vacuum cleaner and get the dust out of it. It is also advised to wash it for better cleaning.

The self-restart function is also present, so you can let blackouts pass without checking on your unit.

Features To Consider
  • Dimensions – 25.4” x 23.6” x 17.9”
  • Capacity – 371 CFM
  • Window Width – Minimum: 19” – Maximum: 36”
8-Way Turning Air Louvers

It will blow the air right where you need it. Adapt the louvers to get the freshening that you need. Besides, the 4.9-ft. cord will allow you to mount it with ease.

Some of its highlights include:

  • Safe – Trust it to work even when you’re not at home as it’s UL listed
  • Speeds – Select among the 3 speeds or set it on Auto mode
  • Sleep Mode – Progressively decreases the speed after it has been activated

The hardware is included with the purchase, so expect no extra costs down the road but rather constant enjoyment of your new AC.


Top 14 Casement Window ACs Compared

Photo Casement Window Air Conditioners Price
Amana AMAP151BW Image
Best Overall
1. Amana AMAP151BW
  • Maximum coverage area: 700 sq. ft.
  • Cooling power: 15,000 BTUs
  • Fan speeds: 3
  • Air direction control: 8-way
  • Features: 24-hour timer, Automatic restart, Washable filter, Sleep mode, Eco mode, Electronic controls
  • Dimensions: 25.4” x 23.6” x 17.9”
  • Warranty: 1 year
Check Price at Amazon
Friedrich Chill CP10G10B Image
Best for Moisture Removal
2. Friedrich Chill CP10G10B
  • Maximum coverage area: 450 sq. ft.
  • Cooling power: 10,000 BTUs
  • Fan speeds: 3
  • Air direction control: 4-way
  • Features: 24-hour timer, Automatic restart, Automatic air sweep
  • Dimensions: 22.2″ x 23.6″ x 15″
  • Warranty: 1 year full, 5 years for the sealed system
Check Price at Amazon
Frigidaire FFRS1022R1 Image
Best for Large Apartments
3. Frigidaire FFRS1022R1
  • Maximum coverage area: 450 sq. ft.
  • Cooling power: 10,000 BTUs
  • Fan speeds: 3
  • Air direction control: 4-way
  • Features: 24-hour timer, Programmable thermostat
  • Dimensions: 14.5” x 20.2” x 23.5”
  • Warranty: 1 year full, 5 years for the sealed system
Check Price at Amazon
PerfectAire 3PASC10000 Image
Editor’s Choice
4. PerfectAire 3PASC10000
  • Maximum coverage area: 450 sq. ft.
  • Cooling power: 10,000 BTUs
  • Fan speeds: 3
  • Air direction control: 4-way
  • Features: Fully programmable, Automatic cooling mode, Digital display, Exhaust control, Energy saver mode
  • Dimensions: 23.5″ x 14.5″ x 20.5″
  • Warranty: 1 year
Check Price at Amazon
GE AEM10AX Image
Most Feature-Rich
5. GE AEM10AX
  • Maximum coverage area: 400 sq. ft.
  • Cooling power: 10,000 BTUs
  • Fan speeds: 3
  • Air direction control: 4-way
  • Features: Sleep mode, Eco mode, 24-hour timer
  • Dimensions: 15-3/4″ x 21-11/32” x 21-1/4”
  • Warranty: 1 year
Check Price at Amazon
Frigidaire FFRA1022R1 Image
Best for the Money
6. Frigidaire FFRA1022R1
  • Maximum coverage area: 450 sq. ft.
  • Cooling power: 10,000 BTUs
  • Fan speeds: 3
  • Air direction control: 8-way
  • Features: Check filter alert, Washable filter, Electronic controls, On/off timer, Energy saver mode, Automatic cool, Exhaust controls
  • Dimensions: 21.5″ x 19″ x 14.5″
  • Warranty: 1 year full, 5 years for the sealed system
Check Price at Amazon
Global Industrial Air Conditioner Image
Best for Air Circulation
7. Global Industrial Air Conditioner
  • Maximum coverage area: 450 sq. ft.
  • Cooling power: 10,000 BTUs
  • Fan speeds: 2
  • Air direction control: 4-way
  • Features: LED display, Sleep mode, Automatic restart, 24-hour timer
  • Dimensions: 20-7/8” x 14-5/8” x 23-1/2″
  • Warranty: 5 years
Check Price at Amazon
Frigidaire FFRS0822S1 Image
Most User-Friendly
8. Frigidaire FFRS0822S1
  • Maximum coverage area: 350 sq. ft.
  • Cooling power: 8,000 BTUs
  • Fan speeds: 4
  • Air direction control: 4-way
  • Features: 24-hour timer, Automatic cool, Filter change indicator
  • Dimensions: 14.2″ x 23.5″ x 20.2″
  • Warranty: 1 year full, 5 years for the sealed system
Check Price at Amazon
Koldfront CAC8000W Image
Most Versatile
9. Koldfront CAC8000W
  • Maximum coverage area: 350 sq. ft.
  • Cooling power: 8,000 BTUs
  • Fan speeds: 3
  • Air direction control: 4-way
  • Features: Automatic restart, Digital display, 24-hour timer
  • Dimensions: 14.5″ x 20.8″ x 23.5″
  • Warranty: 2 years
Check Price at Amazon
Arctic King AKSC08CR61 Image
Most Silent
10. Arctic King AKSC08CR61
  • Maximum coverage area: 350 sq. ft.
  • Cooling power: 8,000 BTUs
  • Fan speeds: 3
  • Air direction control: 4-way
  • Features: Electronic controls, Automatic restart, Slinger-up system, Washable filter, 24-hour timer, Sleep mode, Energy Saver mode
  • Dimensions: 15″ x 21″ x 24″
  • Warranty: 1 year
Check Price at Amazon
Frigidaire FFRE0633S1 Image
Most Energy Efficient
11. Frigidaire FFRE0633S1
  • Maximum coverage area: 250 sq. ft.
  • Cooling power: 6,000 BTUs
  • Fan speeds: 3
  • Air direction control: 8-way
  • Features: Filter change indicator light, Sleep mode, 24-hour timer, Ionizer, Ready-select controls
  • Dimensions: 15.5” x 13.4” x 18.5”
  • Warranty: 1 year full, 5 years for the sealed system
Check Price at Amazon
Keystone KSTAW06B Image
Budget Pick
12. Keystone KSTAW06B
  • Maximum coverage area: 250 sq. ft.
  • Cooling power: 6,000 BTUs
  • Fan speeds: 3
  • Air direction control: 2-way
  • Features: Automatic restart, Sleep mode, 24-hour timer, Mesh filter, Filter change indicator light
  • Dimensions: 15.7” x 18.5” x 13.4”
  • Warranty: 2 years
Check Price at Amazon
Keystone 5,000 BTU Image
Best for Small Apartments
13. Keystone 5,000 BTU
  • Maximum coverage area: 150 sq. ft.
  • Cooling power: 5,000 BTUs
  • Fan speeds: 3
  • Air direction control: 2-way
  • Features: Automatic restart, Temperature sensing remote control, Antibacterial filter, 24-hour timer, LED display, Electronic controls
  • Dimensions: 12.5″ x 16.25″ x 39″
  • Warranty: 1 year full, 5 years for the sealed system
Check Price at Amazon
Emerson Quiet Kool EARC5MD1 Image
Best for Office
14. Emerson Quiet Kool EARC5MD1
  • Maximum coverage area: 150 sq. ft.
  • Cooling power: 5,000 BTUs
  • Fan speeds: 2
  • Air direction control: 8-way
  • Features: Automatic restart, Rotary controls
  • Dimensions: 14.6” x 21.5 x 19.7”
  • Warranty: 1 year full, 5 years for the sealed system
Check Price at Amazon

How To Install an AC in a Casement Window


To follow through properly, you require several tools at hand, including Plexiglas, Styrofoam, or any other material that keeps the coolness inside and the hot air out, as well as a bungee cord and a latch.

Step 1: Measure and Check

Get the cutting and drilling parts done before acquiring the Pixelglas. Put the AC system close to the installation site to ensure you won’t need to extend the vent hose later.

  • Establish how large the insert needs to be.
  • Verify that the Plexiglas and vent hose match in size.
  • If the aforementioned do not match in size, a proper fit is not possible, so you must cut a right-sized hole that suits the AC vent hose measurement.
Step 2: Mount the Insert
  • Open the window and use a latch to hold it in place during the whole procedure so that it won’t get damaged.
  • Secure the window to prevent any damage that could be inflicted by a breeze or light wind.
  • With the help of twist clamps, you can proceed to secure the insert to the frame.
Step 3: Weatherproof the Insert

The insert is the sole part that separates your home from the outdoors, and this is why it’s important to seal it right so that it is waterproof. Caulk the jointing of the window frame to the casing. If you use self-adhesive, you must proceed as follows:

  • Attach it before securing the insert to the frame.
  • The weatherstripping should fit tightly between the frame and insert, so it forms an effective seal, and it must compress as well.
  • Verify that it’s about half of its normal thickness where the two meet.

To waterproof your window, you can fit the stripping between the wall and insert and run it over the area where they meet.


How to Insulate Around Window AC


When performing this task, it is of the highest importance to follow the steps as accurately as possible to avoid possible future malfunctions that may reduce the impact the unit has on the indoors. You don’t want the inside air to leak as you would just lose coolness, and you don’t want the outdoor air to enter, as it brings with it the heat. Moreover, as this is a rather permanent mount, you must prepare for the winter, when poor insulation along the casing can once again favor the change of air and put a strain on your heating installation.

To learn how to properly insulate, take a look at the steps below:

Mounting – Prevention is better than fixing. Thus, to confirm that there are no air leaks, use the right amount of sealant. Before doing this, you have to assess the area correctly so the unit fits snug in the opening.

Check for air leaks – The window has to be lowered on top of the casing to seal it. Nonetheless, if not done properly, there will be some space left. You can check for air leaks by holding a light above the AC and under the window. If there’s even a slight flickering, there’s a leak.

Examine the chassisIf the flap looks yellow or worn out, it may mean that it allows air leaks. The fine cracks on the surface are allowing air to escape. You can pick up a replacement or get in contact with the manufacturer.

Spray Foam – If you don’t have the option to purchase replacement parts, you can spray foam where the light indicates that there are air leaks. Remember, this is not a permanent solution and it may not work during the winter.


Conclusion

Our evaluation is approaching the end, so it’s time to draw a conclusion. All the units we have analyzed proved worthy assets for a home, with the only condition to be used in rooms that can match their cooling capacities. They provide extra functions, being able to draw moisture from the air and even circulate it, creating fresher environments. Moreover, they come with mounting kits that make the job easy, even for a novice.

These being said, don’t hesitate to glance again at some of our best selections:

Best casement window air conditioner on the market: Amana AMAP151BW

There is a long list of qualities that led to this unit obtaining the first position. The most remarkable one, undoubtedly, is its extraordinary cooling potential, which makes it fit for full apartments or extra-large rooms. It also boasts a huge dehumidification capacity, being able to draw up to 3.52 PPH of water and maintain a safe and dry environment that can resist mold problems.

Seeing as it has an 11.9 EER rating, it is easy to classify it as cost-efficient, which is a necessity when it comes to freshening large spaces. Add to this its numerous functions and modes, and you get a multifunctional model that can deliver great results.

Editor’s choice: PerfectAire 3PASC10000

An entry we recommend to all those in need of an AC that can tailor to spaces upward to 450 sq. Ft., this PerfectAire unit is a force to be reckoned with considering its high 10,000 BTU cooling potential. Nevertheless, this isn’t the only aspect of interest seeing how it exhibits a long list of highlights that include a timer that grants you the option to tailor its operation as you see fit, automatic restart upon system reboot with the previously nominated settings, and several modes, only to name a few.

Best casement window air conditioner for small apartments: Keystone 5,000 BTU

A great match for condos or single rooms, this unit has medium area coverage and can eliminate the heat from the recommended areas pretty fast. It also comes with a moisture removal function that helps make the atmosphere more comfortable while reducing the risk of mold finding its way on the walls. It is quiet, putting only 49 dB out in the room, so you can even consider it for a bedroom as it won’t disturb you during your resting hours.

Best casement window air conditioner for the money: Frigidaire FFRA1022R1

The value deal of the moment, this entry manages to stay on the affordable side although it employs upward 10,000 BTUs so that it can keep even a space cool on the most torrid day of summer. Aside from its efficiency, note that it is covered for 1 year in full, both parts and labor, while the closed system is backed against faults for a total of 5 years. Moreover, quality and robustness are basically a given seeing how it is manufactured by what most deem as the leading brand in the industry.

Most energy efficient casement window air conditioner: Frigidaire FFRE0633S1

Energy cost is a significant aspect to remember when you acquire an AC as you wouldn’t want to waste your money on a system that not only likely costs a lot upfront, but spikes the electricity bills, drilling a hole in your wallet. If you seek a cost-efficient system, this Frigidaire is your best option as it is rated 12.2 for energy efficiency.

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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