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9 Best Rated Through The Wall Air Conditioners for a House

L ess obtrusive than its on-the-wall counterpart, an AC unit that mounts through the wall is simpler to operate and more competent in lowering the temperature in the area where it’s placed. While it’s comparable to the window-mounted unit, it will offer more freedom in picking the installation point since you can place it at any level on the wall. Therefore, it is more space-saving and works excellent as a main or additional cooling unit.

There are quite a few brands out there that produce wall ACs, making this a highly competitive market. Usually, the more the merrier, but this does make it a bit problematic to find a product that complies with your demands and expectations. To ease your search, we have rounded up the best wall air conditioners, reviewed and ranked them after thorough analysis to ensure you will find what you look for in a jiffy.

If you don’t want to make a hole in the wall to set up the AC but you’re not a fan of window-mounted models either, you should try out a dual hose portable AC instead. The main perks with this type of AC are that you don’t have to find a permanent location for it (relocate it from room to room whenever you want), and you won’t need to drill any holes in the wall or permanently block a window either.

Top 9 Through The Wall Air Conditioners Comparison

Photo Product Name Wall Sleeve Requirements Capacity Coverage Speeds Modes Warranty Price
 Frigidaire FFRH1822R2 Image
Best Overall
1. Frigidaire FFRH1822R2
18” x 23 7/8” x 26” 18,000 BTUs cooling
16,500 BTUs heating
1, 050 sq. ft. 3 Heat, Cool, Econ, Fan Only 1 year Check Price at Amazon
Koldfront WTC14012WCO ImageEditor’s Choice
2. Koldfront WTC14012WCO
15.25” x 25.5” x 17.5” 14,000 BTUs 550-700 sq. ft. 4 Auto, Cool, Dry, Energy Saver 2 years Check Price at Amazon
 LG LT1037HNR Image
Best with Heat
3. LG LT1037HNR
16-23/32” x 15-17/32” x 25-7/8” 10,000 BTUs cooling
11,200 BTUs heating
450-550 sq. ft. 3 Cool, Energy Saver, Fan, Dry 1 year Check Price at Amazon
 Friedrich CP12G10B Image
4. Friedrich CP12G10B
15-1/2” x 23-7/8” x 8” 12,000 BTUs 550 sq. ft. 3 Money Saver, Fan, Cool, Dehumidifier 1 year full, 5 years for refrigeration system Check Price at Amazon
 Frigidaire FFTA1233Q1 Image
5. Frigidaire FFTA1233Q1
21” x 25” x 15” 12,000 BTUs 550 sq. ft. 4 Auto, Cool, Energy Saver, Fan 1 year Check Price at Amazon
 Keystone KSTAT10-2C Image
6. Keystone KSTAT10-2C
18-7/8” x 7-1/2” x 14-1/2” 10,000 BTUs 400-450 sq. ft. 4 Auto, Cool, Dry, Energy Saver, Sleep 5 years Check Price at Amazon
Midea MAT10R1ZWT Image
7. Midea MAT10R1ZWT
N/A 10,000 BTUs 450 sq. ft. 3 Cool, Dehumidifier, Fan, Sleep, Eco 2 years full, 5 years for the sealed system Check Price at Amazon
Perfect Aire 4PATW10000 Image
Best for the Money
8. Perfect Aire 4PATW10000
15-5/8” x 25-15/16” x 21” 10,000 BTUs 450 sq. ft. 4 Auto, Cool, Dry, Fan, Energy Saver 2 years Check Price at Amazon
 Koldfront WTC14012WCO230V Image
Best for An Appartment
9. Koldfront WTC8002WCO
25-1/2” – 27” x 15-1/4” – 16-3/4” x 15-7/8 – 22” 8,000 BTUs 300-350 sq. ft. 4 Auto, Energy Saver, Dehumidifier 1 year Check Price at Amazon

If you find it too complicated to install a wall AC, you have a viable alternative in the window AC. Efficient and easier to install, these units do the job just as well as their counterparts that must be set up through the wall.

1. Frigidaire FFRH1822R2

Check Price at Amazon


Specifications:
  • Wall sleeve requirements: 18” x 23 7/8” x 26”
  • Capacity: Cooling: 18.500 BTUs
    Heating: 16.000 BTUs
  • Area coverage: 1,050 sq. ft.
  • Speeds: 3
  • Timer:
  • Dehumidifier function:
  • Filter check:
  • Sleep mode:
  • Remote control:
  • Warranty: 1 year


Meet performance at its highest standard with this innovative and powerful AC that offers a cooling power of no less than 18,500 BTUs. Plus, another 16,000 BTUs enable it to provide heating in rooms measuring up to 1,050 square feet. It is simple to use, with a large control panel with clear controls and a remote that allows changing settings from afar.

It measures 23 5/8” wide, 17 5/8” high, and 25 3/8” deep, and it weighs 118 pounds. The wall you plan on installing it through shouldn’t be thicker than 8 inches, and the frame it includes measures 18” in height and 23 7/8” in width. It can also support window installation using the included kit, and it has a limited warranty of 1 year from the moment of your purchase.

Performance and Controls

It features 3 fan speeds and upholds a silent operation regardless of the speed setting you select so that you can run it day and night without the unit posing a distraction. It creates 54 decibels on low and 60 decibels when on the high speed – and thanks to its 8-way air path control, you can easily select in which way you wish the cold air to go first.

With the Sleep Mode activated, it will create a pleasant ambiance during the evening by gradually regulating the temperature. Since it boasts a high BTU rating, it can become the main cooling and heating source in your home. Thanks to the slide-out chassis, it can be simple for you to mount it without expert help.

The 24-hour timer lets you set a working schedule to avoid electricity waste without sacrificing comfort. Moreover, if the unit turns off due to a power shortage, it will immediately turn on as soon as the power comes back, continuing to operate with your pre-selected settings.

Cleaner air

This isn’t a regular AC unit that simply modifies the temperature – it works as a dehumidifier that takes out the moisture from the air too. While it does that, it manages to purify the air using a washable filter that gathers dust particles. Another convenient feature stands in the alert that notifies the user when the filter requires cleaning.

PROS
  • 8-way air control
  • Auto-save and auto-restart functions
  • 3 fan levels for faster cooling
  • Versatile with both cooling and heating ability
  • Can dehumidify 5.5 pints/hour
  • In-wall and window installation

CONS


VERDICT

This unit is very powerful and long-lasting. Thanks to its 8-way air direction control that allows you to select which way you prefer the cold air to go, as well as the 24-hour timer, you’ll be able to personalize its operation according to your needs and schedule. Additionally, due to the memory function, you won’t have to worry about power cuts as it will easily restore the settings once the power returns after an outage.



2. Koldfront WTC14012WCO

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Specifications:
  • Wall sleeve requirements: 15.25” x 25.5” x 17.5”
  • Capacity: 14,000 BTUs
  • Area coverage: 550 – 700 sq. ft.
  • Speeds: 4
  • Timer:
  • Dehumidifier function:
  • Filter check:
  • Sleep mode:
  • Remote control:
  • Warranty: 2 years


Specially made for through-the-wall installation, this is your go-to choice if you want a compact but powerful AC. It measures 14-1/2” in height by 24-1/4” in width by 20-3/8” in depth and requires a WTCSLV wall mounting sleeve that isn’t included in the package and that measures 15-1/4” in height by 25-1/2” in width by 17-1/2” in depth. It has a 14,000 BTU capacity and it is recommended for spaces measuring 550-700 square feet. The energy efficiency ratio is 9.4, and you can set the temperature that it should maintain in the room from 62 to 86 degrees Fahrenheit.

The power cord measures 6.5 feet in length, an aspect you must take into account when you pick the exact installation place for the unit if you don’t want to end up using extension cords. The intuitive controls and large digital display make it easy to operate even for first-time owners. The package includes a remote control to change the settings from afar. There is an internal fan with 4 speed settings, namely low, medium, high, or auto. The adjustable louvers are another mention-worthy perk since you can use them to direct the cold air where you wish. The filters help improve air quality in the room while protecting the AC from damage since their purpose is to trap impurities lingering in the air the unit pulls in.

For added convenience, a timer was added to let you customize the working schedule and limit energy usage. It’s relatively silent, at 59 decibels on the higher level, and it can also be set to a Dry mode that dehumidifies the air. In the Sleep mode, it will raise the temperature during the night, returning it to your settings first thing in the morning. When it comes to backing, the manufacturer covers repairs during the first 2 years after you make the acquisition.

PROS
  • A hefty screen with visible controls
  • 4 fan speeds for better optimization
  • Strong and silent
  • Washable filters
  • Dehumidifier function when used in dry mode

CONS


VERDICT

Considering that it is rated at 14,000 BTUs cooling power, this is a great option for people who are dealing with torrid summers and want to escape the heat when they’re at home. It’s simple to operate and lets you even direct the way in which the cold air flows, creating perfect living conditions even for the most pretentious users.



3. LG LT1037HNR

Check Price at Amazon


Specifications:
  • Wall sleeve requirements: 16-23/32” x 15-17/32” x 25-7/8”
  • Capacity: Cooling: 10,000 BTUs
    Heating: 11,200 BTUs
  • Area coverage: 450-550 sq. ft.
  • Speeds: 3
  • Timer:
  • Dehumidifier function:
  • Filter check:
  • Sleep mode:
  • Remote control:
  • Warranty: 1 year


With a cooling power of around 10,000 BTUs and a heating capacity of 11,200 BTUs, this AC can chill rooms up to 440 square feet in size. It has 3 speed levels that allow you to adjust the intensity with which it cools or heats the room, offering you the possibility to use the unit year-round. It measures 20.1” in height by 24 in width by 14.4 in depth and it weighs 70 pounds. The size of this product implies that you can pair it with existing wall sleeves measuring 26 inches wide.

The energy efficiency ratio of this model is 9.8. Aside from its function as an air conditioner it also works as a dehumidifier – it removes up to 3.2 pints of moisture per hour. When it pulls the air inside, the incorporated filter eliminates polluting particles to protect the unit from damage and help clean the air inside the room. It features a rotary compressor with an R410A refrigerant, and it doesn’t make much noise when it runs – from 54 to 61 decibels.

It is packed with multiple features, including thermostat control, 4-way airflow direction, a 24-hour adjustable timer, and an energy-saving setting. The digital controls provide an intuitive means to set the desired temperature from 60 to 85 degrees Fahrenheit, set up the timer, and select the preferred operation mode (pick from energy saver, cool, fan, or heat). The LED indicator lets you know when the filter needs to be washed. The included remote provides a convenient means to change the settings from afar. Before we end, we must mention that the product is covered by a 1-year warranty.

PROS
  • Intended for cooling and heating purposes
  • Compatible with already existing 26” mounting sleeves
  • It removes excess moisture from the air that it pulls inside
  • Multiple working modes – fan, cool, heat, dehumidify

CONS
  • Not the cheapest pick you could opt for
  • The included matching sleeve is slightly bigger than the unit


VERDICT

Seeing how it functions as both a cooling and a heating unit, you can use this LG year-round. Moreover, the 4-way airflow direction control guarantees that cooling and heating are provided evenly throughout the room.



4. Friedrich CP12G10B

Check Price at Amazon


Specifications:
  • Wall sleeve requirements: 15-1/2” x 23-7/8” x 8”
  • Capacity: 12,000 BTUs
  • Area coverage: 550 sq. ft.
  • Speeds: 3
  • Timer:
  • Dehumidifier function:
  • Filter check:
  • Sleep mode:
  • Remote control:
  • Warranty: 5 years


This model belongs to the “Chill” series from Frigidaire and it is one of the most efficient AC units in terms of cooling homes or commercial spaces. There are two installation options available: through the wall or inside a window sill. This particular model is rated at 12,000 BTUs cooling capacity, but there are other options in the same series with it that range from 5,200 BTUs to 24,000 BTUs. Thus, in case you’re looking for a different capacity model but you want it to have the same specs as this one, Frigidaire has you covered.

This model measures 23.6 inches in width by 21.75 inches in depth by 15 inches in height, and it weighs 87 pounds. It can cool a room of approximately 550 square feet and it is rated at 330 CFM. The Auto Air Sweep feature provides consistent air distribution throughout the room thanks to the louvers that are in a constant swinging motion. The control panel provides an intuitive means to pick between the 4 operating modes – fan, cool, money saver, and dry. When used in the dry mode it acts like a dehumidifier and extracts up to 3.3 pints of moisture per hour. It features 3 fan speeds – low, medium, and high. Moreover, it features a timer that lets you set the span of its operation as you like to limit power draw.

Thanks to the thermostat, you can monitor the temperature in the room and set it from 60 to 86 degrees Fahrenheit. It includes a washable anti-microbial filter that clears the air pulled in by the AC of impurities to provide you with clean air to breathe and keep the internal parts of the unit safe from damage. Woefully, it’s likely that you will need to clean the filter every couple of weeks, which is a bit bothersome. It features the automatic restart function that saves your preferred settings so that you won’t have to reinsert them when the power comes back after an outage. It is accompanied by a 5-year warranty from the moment of purchase.

PROS
  • High power and extended coverage – rated at 12,000 BTUs and covers areas of up to 550 sq. ft.
  • Dehumidifier function – removes 3.3 pints of moisture per hour
  • Energy-saving mode reduces operating costs
  • Adjustable louvers for airflow direction control

CONS
  • It’s not compatible with many sleeves
  • There were some complaints about its noise level


VERDICT

Easy to use, with a conveniently-placed control panel that is easy to access, it will quickly help cool the room. It comes with a remote control that serves as a portable thermostat so that you can always keep an eye on the temperature, while the timer will allow you to set the duration of its operation as you like to cut on running costs.



5. Frigidaire FFTA1233Q1

Check Price at Amazon


Specifications:
  • Wall sleeve requirements: 15-5/8” x 25 15/16” x 21”
  • Capacity: 12.000 BTUs
  • Area coverage: 550 sq. ft.
  • Speeds: 4
  • Timer:
  • Dehumidifier function:
  • Filter check:
  • Sleep mode:
  • Remote control:
  • Warranty: 2 years


Unlike the Frigidaire FFRH1822R2, this Frigidaire unit only works as a cooling system, hence the lower ranking. It is rated to produce 12,000 BTUs cooling power, which makes it suited for rooms up to 550 square feet in size. The unit measures 14-1/2 inches in height by 24 inches in width by 20-1/2 inches in depth, and it requires the wall to not be thicker than 18 inches where you make the installation. The energy efficiency ratio of this product is 9.8, and it is among the cheapest models to run. Since it can remove up to 3.3 pints of moisture per hour, it eliminates the need for a dehumidifier in the room where you set it up.

The ready-select controls grant a rapid means to choose the option you desire when selecting the settings. It features 3 running speeds and an auto mode – while in auto mode, it toggles between the speed settings to optimally uphold the temperature setting that you select. It has an air circulation rate of 305 CFM on high, 279 CFM on medium, and 255 on low.

The 4-way air direction control lets you adjust how the airflow is directed in the room to make sure no spot is left unattended. The filter slides out quite easily so that you have hassle-free access to it when the times come for routine upkeep. Since the filter is an antibacterial mesh, it traps allergens and dust particles in the room to not only protect the unit from harm but to clean the air indoors and make it safer for you to breathe.

The energy-saving mode this unit features keeps the bills from skyrocketing. Another useful operating mode is the Sleep mode that gradually adjusts the settings as needed to create comfortable conditions in the room at night while making sure the noise level produced by the AC is kept at a minimum. It even features a timer that you can set as you prefer to limit the operation of the unit and save on the electric bill by doing so.

The filter check indicator lets you know exactly when the time comes for routine filter cleaning. Its full-function remote control will not only function as a thermostat, but it will allow you to control it even from across the room. Additionally, it comes with a 2-year warranty from the moment of your purchase. A downside that needs to be mentioned is the loud operating that might make it slightly inconvenient to use. The noise level reaches 56 dB on the low speed and goes to over 60 dB on high.

PROS
  • Several intensity levels to pick from
  • 4-way air direction for full room coverage
  • Energy-saving mode saves you money
  • Remote control with thermostat function
  • Antibacterial mesh traps impurities and cleans the air in the room

CONS
  • Tends to get a bit noisy
  • There were complaints about the way customer support responded to requests


VERDICT

With this AC in your home, you won’t have to suffer through the summer heat anymore. It is specialized in cooling areas of up to 550 square feet in no time, it provides several operating modes to pick from, and the 4-way air louvers let you direct the air where you want in the room. Other notable highlights include the Sleep mode that adjusts the unit’s operation to keep a quiet environment in the room and the timer that helps reduce running costs.



6. Keystone KSTAT10-2C

Check Price at Amazon


Specifications:
  • Wall sleeve requirements: 21” x 25” x 15”
  • Capacity: 10,000 BTUs
  • Area coverage: 400-450 sq. ft.
  • Speeds: 4
  • Timer:
  • Dehumidifier function:
  • Filter check:
  • Sleep mode:
  • Remote control:
  • Warranty: 1 year


This 10,000 BTU AC unit can cool down a room up to 450 square feet, and you can rely on it to also work as a dehumidifier, removing the moisture present in the room with a rate of 55.2 pints per day. Since it is rated to produce only 54 dB on the low speed and 58 dB on the highest speed, it won’t present a nuisance even if you set it up in the bedroom or office, rooms where ruckus is something that you must avoid. It measures 14.5 inches in height, 20.3 inches in depth, and 24.2 inches in width, and it weighs 69.3 pounds.

It is Energy Star certified and flaunts an EER ratio of 10.6, so you won’t see a noticeable rise in the electricity bills once you start running it. The remote works as a portable thermostat, so you can check the temperature at all times while also enjoying the perk of selecting the settings you prefer from 20 feet away from the AC. There are 3 fan speeds that you can pick from and the 4-way air direction control ensures the room is cooled evenly and in the pattern that you prefer.

The 24-hour timer lets you pick for exactly how long the unit should run unremittingly to save on costs. It features the energy-reducing mode that you can activate when you want to cool the room in the most cost-effective manner possible, as well as the Sleep mode that adjusts the settings so that you can sleep in the same room with the AC without it posing a distraction while you try to rest. Warranty-wise, you can expect the manufacturer to cover the product against defects for 1 year after you acquire it.

PROS
  • The filters can be cleaned instead of replaced
  • The remote control works like a thermostat
  • 3 fan speeds and 4-way air direction control
  • Incredibly silent – produces from 54 to 58 dB

CONS
  • Rather difficult to mount
  • Some complained about it not fitting with already existing wall sleeves


VERDICT

This AC provides you with full control over its operation and lets you customize the temperature that it should maintain as you deem fit. The remote control functions like a portable thermostat, so you can check the temperature wherever you go. Additionally, it provides 3 speed settings to pick from and 4-way adjustable airflow control to direct the cool air in whatever area of the room you want to.



7. Midea MAT10R1ZWT

Check Price at Amazon


Specifications:
  • Wall sleeve requirements: N/A
  • Capacity: 10,000 BTUs
  • Area coverage: 450 sq. ft.
  • Speeds: 3
  • Timer:
  • Dehumidifier function:
  • Filter check:
  • Sleep Mode:
  • Remote control:
  • Warranty: 2 years for parts and labor, 5 years for the sealed system


This 3-in-1 unit from Midea is a perfect example of quality design considering the reliable performance it provides in the long run. We call it a 3-in-1 model since you can use it to cool the room, dehumidify, or opt to run the fan alone. Thus, whatever your demands are, the MAT10R1ZWT is guaranteed to comply with them. Since this is a 10,000 BTU capacity model, you can count on it to keep the temperature at a bearable level during the hot months of the year in a space that measures up to 450 square feet in size.

Due to the 4-way air direction control it features, you can rest assured knowing that the room is evenly cooled since the louvers automatically swing to cover the whole area. It is rated at 55 dB, which isn’t supposed to be bothersome. However, on the high speed setting, people have reported that it’s quite tough to fall asleep with it in the room. But there is a solution – turn on the Sleep mode that adjusts the speed of the unit to create appropriate sleeping conditions.

The Midea boasts a 10.6 energy efficiency ratio, which is a good indicator of how energy-efficient this unit is. It features a washable filter that helps save money in the long run since you won’t have to routinely replace it. When the time comes to clean the filter, the indicator on the AC will let you know, making upkeep work more convenient.

A remote control is included with the package, so you can easily operate the AC across the room and adjust the setting to your liking. To install it, you must separately acquire the suited wall sleeve. Keep in mind that the AC measures 24.2 inches by 20.3 inches by 14.5 inches when you pick the wall sleeve to insert it into. Lastly, the product is backed by the manufacturer for 2 years for parts and labor, and 5 years for the sealed system.

PROS
  • The 4-way automatic swing louvers move the air so that the whole room is cooled evenly
  • Restarts with your most recent settings after a power loss occurs
  • Sleep mode lets you set an hour for the AC to adjust its operation so that it creates pleasant sleeping conditions
  • Check filter indicator shows you exactly when filter upkeep is due
  • Remote control and installation accessories included with the package

CONS
  • The power cord could have been longer
  • It tends to get a bit loud on the higher speed settings


VERDICT

Fairly priced considering the 10,000 BTU capacity and vast 450 square feet coverage this Midea product is one worth considering if you want to create pleasant conditions in your home when the torrid weather strikes. Since it’s a 3-in-1 unit that you can use as an AC, dehumidifier, or fan, it’s easy to see why this is a deal we recommend you carefully look into before you decide.



8. Perfect Aire 4PATW10000

Check Price at Amazon


Specifications:
  • Wall sleeve requirements: 25-1/2” – 27” x 15-1/4” – 16-3/4” x 15-7/8 – 22”
  • Capacity: 10,000 BTUs
  • Area coverage: 400-450 sq. ft.
  • Speeds: 4
  • Timer:
  • Dehumidifier function:
  • Filter check:
  • Sleep mode:
  • Remote control:
  • Warranty: 1 year


If you are on a tight budget, you should have a look at this model. It’s a 10,000 BTUs unit that can handle medium-size spaces of 450 square feet. The manufacturer also offers an 8,000 BTU and a larger 12,000 BTU version, so you have your pick if you like this model but seek a different cooling capacity AC. It measures 24.25 inches in width, 14.5 inches in height, and 18.5 inches in depth, and it weighs 68 pounds. It can work with several wall sleeves, but they should be between 25-1⁄2” – 27” in width, 15-1⁄4” – 16-3⁄4” in height, and 15-7/8” – 22” in depth.

Operating it is pretty straightforward: it features a large control panel with a big screen and light indicators for each setting. You can select between multiple speed settings – low, medium, and high. When it comes to the operating modes of the AC, these include Auto, Cool, Dry, and Fan, plus the Energy Saver setting and the Sleep mode for nighttime use. It doesn’t make much noise when it runs – 53 dB on low, 55 dB on medium, and 57 dB on high.

If you simply want the unit to circulate the air in the room instead of outright working to reduce the temperature, then you can run it on the Fan mode. It features a timer that you can set to find the room cool when you arrive from work, the timer also serving as a power-saving option since you can limit the operation of the AC to what is strictly needed. The Follow Me option lets you control the unit from a distance with the remote control that acts as a thermostat, displaying the temperature as well as the other settings, so you’ll always be in control.

The 4-way directional air louvers let you redirect the cold air in multiple directions. While it cools the air, it also takes out dust and impurities using the included filter that you must routinely clean. When this task will be required, a LED light will turn on to notify you. Lastly, there is a 1-year warranty from the moment of your purchase that spares you from costs in case the unit becomes defective.

PROS
  • Programmable timer lets you schedule the operation of the AC
  • Energy saving setting reduces operating costs
  • Compatible with several types of wall sleeves
  • LED indicator light shows when filter cleaning is due
  • The remote control acts like a thermostat due to the Follow Me function

CONS
  • The mounting sleeve is not included
  • The installation indications are vague


VERDICT

This AC provides a truly quick way to cool down the room you place it in, and it even lets you put together a schedule for it via the timer setting. The air directing louvers permit you to decide in what direction the cold air should flow, while the remote control acts as a portable thermostat. These are only some of the reasons why this Perfect Aire unit makes for a deal that’s hard to pass on.



9. Koldfront WTC8002WCO

Check Price at Amazon


Specifications:
  • Wall sleeve requirements: 15.25” x 25.5” x 17.5”
  • Capacity: 8,000 BTUs
  • Area coverage: 300-350 sq. ft.
  • Speeds: 4
  • Timer:
  • Dehumidifier function:
  • Filter check:
  • Sleep mode:
  • Remote control:
  • Warranty: 2 years


If you have a smaller area that you need to cool (350 square feet tops), then this Koldfront is the product we recommend. This 8,000 BTU model boasts an energy efficiency ratio of 10.6, so you won’t witness dramatic changes in the electricity bills as of installing and running it. It measures 14.5 inches in height, 24.2 inches in width, and 20.3 inches in-depth, and it weighs 64.9 pounds, allowing you to place it at any height on the wall using the Koldfront sleeve that is sold separately. You can manually select between the 3 speed settings or set it to Auto mode and let it adjust the speed as needed on its own to maintain the temperature you pick.

The energy-saving setting it features makes the unit turn off as soon as the desired temperature is reached to limit the power draw as much as possible. Another interesting setting is the Sleep mode that slightly increases the temperature overnight and returns to the previous settings in the morning to prevent energy waste. It lets you pick the temperature it ought to reach and preserve from 62 to 86 degrees Fahrenheit.

It also acts as a dehumidifier since it removes up to 2.1 pints of water from the air per hour, eliminating the need for you to ever use a specialized dehumidifier in the room where the AC is installed. It even captures impurities from the air during its operation due to the integrated filter, improving air quality in the process. Keep in mind that the filter will require routine cleaning, but this isn’t a very time-consuming process, and considering that it saves you money since you won’t have to change the filter altogether every time it gets dirty, washing it is worth the hassle. With the purchase, you receive a remote control that you can use to more conveniently adjust the settings from afar. Since the louvers are adjustable, you can direct the cold air in what side of the room you want. Lastly, we mention that a 2-year warranty for parts and labor is provided by the manufacturer.

PROS
  • Remote control for more convenient use
  • 3 fan speeds for faster cooling
  • Adjustable louvers for cooling flexibility
  • Integrated filter traps impurities from the air pulled in by the AC

CONS
  • The mounting sleeve is not included
  • Some complained about its noise level


VERDICT

Since it has a lower BTU rating as opposed to the other products we reviewed, this Koldfront AC is suited for smaller-sized rooms. It packs multiple useful features, like multiple working modes and adjustable louvers. You can count on it for years to come, and during the first 2 years, any repairs that might be needed are covered for free by the manufacturing company.



Troubleshooting Guide


While there are differences between AC units since the products differ in make and design, there are some similarities when it comes to troubleshooting these products when issues arise. Instead of searching through the manual, you can check to see if any of these issues is what has afflicted your AC and try out one of the solutions we presented here.

Issue Possible Causes Solution
It doesn’t start Plug is disconnected;
There is a malfunction in the circuits;
The control panel is off;
Insufficient power
Check the plug;
Reset the unit;
Turn the control panel on;
Move the unit to a different outlet
The cold air is not cold enough The room temperatures is below 17°C;
The temperature sensor is in contact with the cold coil;
The compressor doesn’t respond
Wait for the temperature to be higher than 17°C;
Move the tube away from the coil;
Wait 3 minutes and then restart the unit
It turns on and off quickly Filters are dirty;
Outside temperature is too hot
Clean the filter;
Set the fan speed higher
It makes noise Poor installation leading to window vibrations Check with the installer
It drips water inside the room Improper installation Check with the installer
The remote control doesn’t work Not in range;
Signal obstructed;
No battery
Put the remote closer to the unit;
Remove the obstruction;
Change the batteries

Wall AC vs Window AC


Keeping the house cool during hot summer days is essential for comfort and even for your health considering that sitting too long in extreme heat can lead to issues like dehydration or even a heat stroke. To achieve that pleasant ambiance indoors when temperatures are extreme, you need an AC unit. Portable AC units have the disadvantage of occupying living space, so they don’t appeal to all people. If you don’t want the air conditioner to take up any space that you can use, then you have two options – either install a wall AC or a window AC. Both types do the job just fine, and if you’re undecided regarding what you ought to opt for exactly, let’s go over each type to help you make up your mind.

Window AC

Easy to set up, which makes it perfect for those who love DIY tasks and prefer to save some money since professional installation is not necessary. All you need is a free window and a power outlet in its proximity. Since these units are not exactly fixed in place, you have the freedom to change their location if you want, and even put them in storage during the cold months of the year when they’re not in use anymore. However, because of their installation manner, the window that you use for the setup process loses its traditional purpose. Moreover, window ACs tend to be loud, and, depending on how successful you were with the installation process, they might prove inefficient because hot air could still enter through the open window.

Through Wall AC

These air conditioning units require a wall sleeve and a hole through the wall for the setup process. since these are fixed units, once you mount them you won’t be able to change their location freely as you do with window and portable ACs. If you ever need to replace the AC, there’s the issue that you have to find another model that fits in the hole you made for the first one. However, while the installation process might be a bit more complicated and demanding, requiring that a professional preferably install them, they are significantly more effective when it comes to cooling the room as opposed to their window-mounted counterparts.

To make it easier for you to decide what AC type best suits your situation, we made a comparison between the two systems in the following matrix, breaking down what each AC unit offers and how they differ.

Specification Wall AC Window AC
Installation Method It is installed through a hole made into an exterior wall. For the installation process, you need a size-compatible wall sleeve. It’s best to opt for professional installation since the setup process is more challenging as opposed to any other type of AC. It is positioned on a windowsill. The setup process is straightforward, so you likely won’t need the help of a professional to follow through with it.
Coverage It is generally harder to find models with vast coverage and high BTU ratings. These more powerful units are not as easy to come by as it is with wall-mounted and portable AC units. It is easier to find models with high BTU ratings that are suited for larger-sized rooms.
Flexibility It doesn’t fare well in this department since the installation is permanent. It is easy to unmount from the window if you want to relocate the AC or simply put it in storage for a while to free up the window.

Frequently Asked Questions



Will I need a sleeve?
Yes. All through-the-wall models need to have a sleeve for installation, support, and hassle-free maintenance. While many models nowadays come equipped with one, check and see if the model you wish to acquire includes one. If it doesn’t, you must separately acquire it.

How can I seal around it?
To keep pests from entering, the best way to seal around an in-wall air conditioning unit is to use caulk. Acrylic caulk is the easiest to apply and it seals even the smallest holes in the wall. While it is the most durable type of seal, it does shrink with time, so make sure that you don’t plan on using it for a large area.

Can it cool my entire house?
No. Each unit is specifically made to lower the temperature within the room where it’s installed, based on its area coverage. If you want to cool all the rooms in your home, then you should install ACs in other areas of the house too.

Can it also heat?
Some ACs can produce both hot and cold air, while others are limited only to lowering the temperature in the room they’re set up in. Check the spec sheet to see what type of unit you’re dealing with before you buy if you want an AC that is good for use year-round like the Frigidaire FFRH1822R2.

Why are through the wall ACs more expensive?
The initial cost for a wall AC is not necessarily bigger when compared to that of a window AC, for example. However, the difference is made when it comes to installation costs seeing how you need to cut a hole in the wall to set up this type of air conditioning unit. Setting it up is more challenging and time-consuming too seeing how you must avoid wires and pipes in the wall where you cut the hole for the AC, and that you must create a perfectly sized space for it. This is why most homeowners who choose a wall AC directly opt for professional installation, which raises costs even more.

What is the difference between window and wall air conditioners?
The main difference between window and wall AC units stands in their installation location. As implied by their name, window units are installed on a window sill, while wall units are placed in an exterior wall.

How much does it cost to install an AC in the wall?
If you opt for professional installation, the total cost for the installation should be approximately $730, whereas if you opt for DIY installation if will cost about $540. Beware that you have to cut a hole in the wall, which isn’t easy at all and it is a pretentious task too seeing how you must make sure that you don’t cut through a spot where the pipe runs or where there are wires. While it is more expensive, a professional installation is the better option of the two.



Conclusion

When the torrid weather makes its inevitable appearance, feeling comfortable when you’re at home is off the table without the help of an air conditioning unit that lowers the internal temperature. Sitting in a hot environment isn’t only uncomfortable but it poses a health issue too since you can fall victim to a heat stroke, so the presence of an AC unit can become compulsory, especially if you live in an area where temperatures go haywire during the hot season. If you are interested in a permanent solution to adjust the temperature indoors and create comfortable living conditions, and you don’t want to sacrifice floor space or have a window become unusable either, then a wall AC is your best solution. We already reviewed and ranked what we found to be the best through the wall air conditioners, but before we end we want to go over a few of the standout models once more to help you make up your mind easier.

Best Overall: Frigidaire FFRH1822R2

Perfect for all seasons, this Frigidaire unit is an excellent option if you seek a year-round use AC. With both heating and cooling capabilities, it can cover large areas of up to 1,000 square feet in size, so if you have a big room that you need to adjust the temperature in, this model is your go-to. What you are bound to like a lot is that you can customize its operation as you see fir since it integrates a timer and 3 speeds. It won’t draw much power when it runs either, so your electricity bill won’t skyrocket as of using it.

Editor’s Choice: Koldfront WTC14012WCO

Our favorite due to its efficiency in terms of cooling as well as the fact that it works as more than simply an AC since you can opt to use it as a fan or benefit from its dehumidification capabilities, this Koldfront is an option we recommend you seriously take into consideration if you want to create comfortable living conditions in a room that doesn’t exceed 700 square feet in size. There are 4 speed settings provided to pick from, and it doesn’t make much noise when it runs so that it won’t pose a distraction when you’re in the same room with it. Moreover, it features a timer that lets you set for exactly how long it should operate so that it won’t run for longer than needed and draw power uselessly.

Best Through-the-wall AC for the Money: Perfect Aire 4PATW10000

Available at an accessible price, this Perfect Aire unit is just what you need if your budget is limited yet you want to make summer days more pleasant and not sweat constantly when you’re at home. This is a 10,000 BTUs capacity model that is recommended for areas of up to 450 square feet in size. It features 4 operating modes and the dehumidification function it offers eliminates the need for a separate dehumidifier since 22 pints of moisture are removed per day from the air by this unit. Best of all, it doesn’t draw much power when it runs, so it’s a cost-effective solution too.

Best Through-the-Wall AC for An Apartment: Koldfront WTC8002WCO

Since it is rated at 8,000 BTUs cooling power, it is your go-to if you seek an apartment AC or one suited for a fairly small-sized space as it covers areas up to 350 square feet in size. There are 3 running speeds that you can switch between to tailor its operation as you like at any given moment. It even works as a dehumidifier, which adds to its usefulness since it reduces excess moisture to create a safer and more pleasant living environment for you. Furthermore, it comes with the energy-saving function that keeps the electricity bills at a reasonable rate regardless of how much you use the AC.

Best Through-the-Wall AC with Heat: LG LT1037HNR

While most people think of installing an AC to make their lives easier during those torrid summer days, what some might not be aware of is that there are models that can be used year-round since they provide heating too. This LG air conditioner is a perfect example, providing 10,000 cooling BTUs and 11,200 heating BTUs, so no matter if you want to use it to lower or raise the temperature in the room, you can count on it for the job. Plus, since it also works as a dehumidifier, it will reduce the discomfort created by high humidity during the hot periods of the year.

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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