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9 Best Rated Through The Wall Air Conditioners for a House

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L ess obtrusive than their on-the-wall counterparts, 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, they are more space-saving and work excellent as a main or additional cooling unit.

There are numerous brands out there, each competing in offering the most versatile models that combine chilling and heating purposes as well as dehumidifying abilities. As such, you will most certainly find a multi-purpose unit that will replace any other room-cooling equipment you might have owned. To aid you in finding the perfect model for all your needs, we offer you our best recommendations.

Top 9 Through The Wall Air Conditioners Comparison

Photo Product Name Type BTUs Coverage (sq. ft.) Speeds Modes Price
Frigidaire FFRH1822R2 Image
Best Overall
1. Frigidaire FFRH1822R2
Cool/Heat 18,000 for cooling
16,500 for heating
1, 050 3 (low, medium, high) Heat, Cool, Econ, Fan Only Check Price at Amazon
LG LT1037HNR Image
Best with Heat
2. LG LT1037HNR
Cool/Heat 10,000 for cooling
11,200 for heating
450-550 3 (low, medium, high) Cool, Energy Saver, Fan, Dry Check Price at Amazon
Koldfront WTC14012WCO ImageEditor’s Choice
3. Koldfront WTC14012WCO
Cool Only 14,000 550-700 4 (low, medium, high, auto) Auto, Cool, Dry, Energy Saver Check Price at Amazon
Friedrich US12D10C Image
4. Friedrich US12D10C
Cool Only 11,500 550 3 (low, medium, high) Cool, Money Saver, Fan Only Check Price at Amazon
Friedrich CP12G10B Image
5. Friedrich CP12G10B
Cool Only 12,000 550 3 Money Saver, Fan, Cool, Dehumidifier Check Price at Amazon
Keystone KSTAT10-2C Image
6. Keystone KSTAT10-2C
Cool Only 10,000 400-450 4 (low, medium, high, auto) Auto, Cool, Dry, Energy Saver, Sleep Check Price at Amazon
Frigidaire FFTA1233Q1 Image
7. Frigidaire FFTA1233Q1
Cool Only 12,000 550 4 (low, medium, high, auto) Auto, Cool, Energy Saver, Fan Check Price at Amazon
Perfect Aire 4PATW10000 Image
Best Budget-friendly
8. Perfect Aire 4PATW10000
Cool Only 10,000 450 4 (low, medium, high, auto) Auto, Cool, Dry, Fan, Energy Saver Check Price at Amazon
Koldfront WTC14012WCO230V Image
Best for An Appartment
9. Koldfront WTC8002WCO
Cool Only 8,000 300-350 4 (low, medium, high, auto) Auto, Energy Saver, Dehumidifier Check Price at Amazon

1. Frigidaire FFRH1822R2

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Specifications

  • Wall sleeve requirements: 18” x 23 7/8” x 26”
  • BTUs: Cooling: 18.500
    Heating: 16.000
  • Area coverage: 1050 sq. ft.
  • Speeds: 3
  • Timer:
  • Dehumidifier function:
  • Filter check:
  • Sleep Mode:
  • Warranty: 1 year


Meet performance at its highest standard with this innovative and highly powerful AC that offers a cooling power of no less than 18,500 BTUs. Plus, another 16,000 BTUs enable it to heat up rooms measuring up to 1,050 sq. ft. It’s very simple to use, with a large control panel with clearly specified controls and a remote that allows distance setup. It measures 23 5/8” wide, 17 5/8” high, and 25 3/8” deep, and it has a weight of 118 pounds. The wall you plan on installing it through shouldn’t be thicker than 8 inches, and the frame it includes measures 18” H and 23 7/8” W. 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 is very powerful, with three modifiable fan speeds that ensure a very silent operation so that you can have it working at any hour of the day at night. It creates 54 decibels when used on low and 60 decibels when used on 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 such a high BTU, it can be used for commercial purposes as well and it can become the main cool and heat source in your home. Thanks to the slide-out chassis, it can be very simple for you to mount it without expert help.

The 24-hour timer lets you set a working schedule so that you will avoid electricity waste without sacrificing comfort within the house. Moreover, in case the unit turns off due to a power shortage, it will immediately turn on as soon as the power goes back. Therefore, you can be certain that it will continue to operate until it gets to the set temperature.

Cleaner air

This isn’t a regular AC unit that simply modifies the air temperature; it works as a dehumidifier that takes out the moisture from the air. While it does that, it manages to purify the air using a washable filter that gathers dust particles. To maximize its effectiveness, the machine comes with an alert that lets you know when it’s time to clean the filter to make sure it will continue to work within optimal parameters.

The warranty is up to par, lasting 1 year for parts and labor plus an additional 4-year on the sealed system.

PROS

  • 8-way air control
  • Quiet operation
  • 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

  • The heating function is not as strong as the cooling
  • Some complained about it being too big


Verdict

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



2. LG LT1037HNR

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Specifications

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


With a cooling power of around 10,000BTU and heating performance of 11,200BTU, this AC is able to chill rooms up to 440 sq. ft. It has 3 speed levels that allow you to adjust both the cooling and the heating intensities, to offer you the possibility of using it in both summer and winter if necessary. It measures 20.1” H, 24” W, and 14.4” D and it weighs 70 pounds, and it can be paired up with already existing 26-inch wall sleeves.

With an energy efficiency ratio of 9.8 while cooling, it can operate as a dehumidifier as well, removing up to 3.2 pints her hour. While at it, the dust particles will also be eliminated from the air thanks to the incorporated filter. It has a rotary compressor with an R410A refrigerant and it has a somewhat low level of noise, as it creates between 54 and 61 decibels.

It is packed with features such as thermostat control, a 4-way air flow direction, a 24-hour adjustable timer, and an energy-saving setting. It has digital controls that will allow you to choose your desired temperature – 60 F up to 85 F, set up the timer, select your desired mode – energy saver, cool, fan or heat –while the LED notifier will alert you when the filter must be washed, as well. If you don’t want to go near it to set everything up, the remote control offers you easy and hassle-free distance use. The warranty for components and labor lasts for 1 year.

PROS

  • Intended for cooling and heating purposes
  • Compatible with already existing 26” mounting sleeves
  • Several functions for a customized use
  • Filtering and dehumidifying abilities
  • Multiple working modes

CONS

  • A bit on the pricey side
  • The included matching sleeve is slightly bigger than the unit


Verdict

A versatile unit that can help you reach a perfect temperature no matter the season, as it can chill and heat up your house. With a 4-way airflow direction, there will be no spots your unit can’t reach, while its functions will offer you the optimal customization for your needs.



3. Koldfront WTC14012WCO

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Specifications

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


Specially made for setting up through the wall, this is your go-to choice if you want a compact but powerful AC. It measures 14 1⁄2” H, 24 1⁄4” W, and 20 and 3/8” D and it requires a WTCSLV wall mounting sleeve, which is not contained within the pack, and that should measure 15 1⁄4” H, 25 1⁄2” W, and 17 and 1⁄2” D. It has a 14.000 BTUs performance and a coverage area around 550 – 700 square feet, with an energy efficiency ratio of 9.4 and a temperature range between 62 and 86F. It requires a 230V outlet and an LCDI 6 – 15P plug type for it to work correctly.

Additionally, for freedom in picking the mounting spot, the power cord is 6 and 1⁄2- feet long. It provides intuitive controls, namely a control panel with specific readings, a large digital screen, and a useful remote control. There is an internal fan with 4-speed settings, which can be set to low, medium, high, or auto speed with other several combinations of settings, while its adjustable louvers are not only simple to control, thanks to the handles, but they also allow you to direct the cold air wherever you wish. Its air filters will not only keep your health in top shape, as they will keep away microbes, but they are also washable, thus you don’t have to change them too often.

For added convenience, a timer was added to let you customize the working schedule and to 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. Unlike its competitors, it comes with a generous 2-year warranty.

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

  • The display is misguiding
  • A matching sleeve is not included


Verdict

A great unit that will definitely help you get through any hot or unbearable summer heat, as it offers you great cooling power and several controls for you to customize your AC. However, it will require professional installation, as it is permanent.



4. Friedrich US12D10C

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Specifications

  • Wall sleeve requirements: 17.78” x 28” x 19.25”
  • BTUs: 11,500
  • Area coverage : 550 sq. ft.
  • Speeds : 3
  • Timer:
  • Dehumidifier function :
  • Filter check:
  • Sleep Mode:
  • Warranty : 1 year for workmanship, 5 years for refrigeration system


This unit measures 14 and 3/8 inches in height, 24 and 5/8 inches in width, and 18 and 1⁄2 inches in depth and it weighs 80 pounds. It has a universal fit, meaning that it is compatible with any, already existing 24.5” to 27” wall sleeves. It boasts a cooling power of 11.500 BTUs and it can handle a room up to 550 sq. ft. while it requires a 115V outlet. It offers 6-way airflow for improved cooling throughout the room while its two-piece trim ring will cover up the gap between the top of the unit and the sleeve, for a perfectly sealed and neat installation.

Energy Star and MoneySaver certified, it will help you save money and will keep your energy bill low, even more thanks to its 24-hour timer function. The fan can be set to 4 intensities, there is a temperature setting button, and an LED that will inform you when it’s time to clean the filter. It has 4 modes: MoneySaver, cool, fan, and dry, thus allowing you the freedom of modifying your room’s temperature and dehumidifying the air.

Moreover, the remote control will allow you to set the level, modify the fan speeds, set the timer and mode, or simply turn it on and off when you see fit. The manufacturer offers a 1-year warranty for defects in workmanship and materials from the moment of your purchase, and with a 5-year warranty for the sealed refrigeration system it has inside.

PROS

  • Universal fit for already existing sleeves in the wall
  • Powerful and resilient
  • A 6-way airflow direction
  • Generous warranty

CONS

  • Some users complained about the noise level
  • Some complained about its overall cooling ability


Verdict

A unit that will keep your room cool and nice even on hot summer days, it has several functions that allow you to customize its use to your liking and needs. Featuring a money-saving function, your energy bill will not raise too much no matter how torrid the summer heat can be.



5. Friedrich CP12G10B

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Specifications

  • Wall sleeve requirements: 18 7/8” x 7 ½” x 14 ½”
  • BTUs: 12.000
  • Area coverage: 550 sq. ft.
  • Speeds: 3
  • Timer:
  • Dehumidifier function:
  • Filter check:
  • Sleep Mode:
  • Warranty: 5 years


This model is included in the “Chill” series of Frigidaire and is one of the most efficient in cooling homes or commercial spaces, with two installation options available: through the wall and inside a window sill. There are quite a few styles and sizes offered, ranging from 5200BTUs up to 24.000 BTUs, this particular one packing a power of 12,000 BTUs. It measures 23.6 inches in width, 21 3/4 inches in depth, and 15 inches in height, and it has a weight of 87 pounds. It is able to cool a room around 550 sq. ft., and it has a CFM of 330. The Auto Air Sweep feature provides consistent air distribution thanks to the louvers swinging constantly.

The included wall sleeve required for the installation measures 18 7/8” in width, 7 1⁄2” in depth, and 14 1/8” in height. The control panel is pretty intuitive, as you can easily choose between 4 modes – fan, cool, money saver, and dry, the dry mode acting like a dehumidifier that can extract up to 3.3 pints of moisture per hour. It has 3 fan speeds, low, medium, and high, while its timer allows you to set it up according to your needs and schedule.

Thanks to the thermostat, you can easily monitor the temperature in the room, and it can be set between 60 F and 86 F. The included washable anti-microbial air filter will keep the air you breathe fresh and with no bacteria in it, but it will have to be cleaned every 2 weeks. It is packed with an auto-restart function which will save your settings if the power is suddenly cut off, restoring them as soon as the unit is restarted. It is accompanied by a warranty of 5 years from the moment of your purchase.

PROS

  • High power and extended coverage
  • Dehumidifier function
  • Energy-saving mode
  • Adjustable louvers for cooling flexibility

CONS

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


Verdict

Easy to use, with an accessible and conveniently-placed control panel, it will quickly help you make your room cool. It comes with a remote control that serves as a portable thermostat, so you can always keep an eye on the temperature, while the timer will allow you to set it up according to your schedule and needs.



6. Keystone KSTAT10-2C

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Specifications

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


This 10.000 BTU AC unit is able to cool down a room up to 450 sq.ft., and it can work like a humidifier, removing the moisture present in the room with a rate of 55.2 pints per day. It has a relatively low-decibel operation, 54 dB on le low and 58 on the high, making it a great addition to several rooms in your house, including bedrooms. It measures 14.5 inches in height, 20.3 inches in depth, and 24.2 inches in width and it weighs 69.3 pounds. Energy Star Certified, it will help you save money in the long run, as its energy efficiency ratio is 10.6. It requires a 230V outlet, to match its 78-inch long power cord, and 2AAA batteries – they are included – for the included control.

Additionally, the remote can function as a portable thermostat, allowing you to check the temperature at all times while giving you the freedom of selecting the settings from more than 20 feet away. It has 3 fan speeds and 4-way air direction control, making it easy to optimize the airflow and cool down your entire house. Moreover, it is fitted with highly convenient settings like an energy-reducing mode, a sleep mode, and a programmable 24-hour timer, which will allow you to customize its use according to your program and preferences. It also has a 1-year limited warranty for parts.

PROS

  • Straightforward operating
  • The filters can be cleaned instead of replaced
  • The remote control can work as a thermostat
  • 3 fan speeds and 4-way air direction control
  • Incredibly silent

CONS

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


Verdict

This AC provides you with control and temperature customization like no other unit. Its remote control can function as a portable thermostat, so you can easily check the temperature wherever you go, while its 3 fan speeds and 4-way adjustable airflow controls allow you to cool down any area you see fit.



7. Frigidaire FFTA1233Q1

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Specifications

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


Unlike the other model from Frigidaire, this one only works as a cooling system, being able to cover rooms of 550 sq. ft. thanks to the high power of 12,000 BTUs. It measures 14-1/2 inches in height, 24 inches in width, and 20-1/2 inches in depth and it requires the wall to be no thicker than 18 inches. Additionally, while it is compatible with almost all types of wall sleeves, it has to have a height of 15-5/8 inches, a width of 25-15/16 inches, and a depth of 21 inches. Furthermore, it has a dehumidification ability of 3.3 pints per hour, and the efficiency ratio reaches 9.8, so it will turn out helpful in saving money.

It requires 115V to function properly so it can be easily installed on your house’s electrical circuit. Thanks to its long 5.5’ power cord, you will easily be able to plug it in any LCDI 5-15P plug. It has ready-select controls for you to quickly choose your desired option. With 3 fan speeds and an auto mode, you can choose the one that fits your needs best, while thanks to its low voltage-start up you won’t have to worry about energy consumption. It has an air circulation rate of 305 CFM on high, 279 on med, and 255 on low, and 4 ways to control its air direction. The filter will easily slide out to provide you with hassle-free access to it while its antibacterial mesh will make sure there are no allergens or dust particles present in your room.

The energy-saving mode ensures your bills won’t rise with time, while the perfect blend of sleep mode and timer offers you the ability to personalize its function according to your schedule so you will always have a cool and refreshing house. Additionally, it has a filter check, which will make sure to alert you as soon as it needs changing, while 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 uncomfortable to use. The noise level reaches 56 dB on the low speed and goes to over 60 dB on high.

PROS

  • Compatible with several wall sleeves
  • Several intensity levels
  • 4-way air direction
  • Energy-saving mode
  • Remote control with thermostat function
  • Filter check light and antibacterial mesh

CONS

  • It’s louder than similar units
  • The customer service is not up to par


Verdict

You won’t have to suffer through the summer heat anymore, as you will be able to cool down a surface up to 550 sq. ft. in no time. It has increased power and it comes with several fan modes and 4 ways to redirect the cool air, thus it will provide you with a refreshing experience. You can even set its timer and sleep mode to start right before you wake up or return from work, so you will be greeted by a cool ambiance.



8. Perfect Aire 4PATW10000

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Specifications

  • Wall sleeve requirements: 25 ½ – 27” x 15 ¼ – 16 ¾” x 15 7/8 – 22”
  • BTUs: 10.000
  • Area coverage: 400-450 sq. ft.
  • Speeds: 4
  • Timer:
  • Dehumidifier function:
  • Filter check:
  • Sleep Mode:
  • 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 sq. ft. The manufacturer also offers an 8,000 BTU and a large 12,000 BTU version, in case you need a variation. 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 between25 1⁄2 -27 inches in width, 15 1⁄4 – 16 3⁄4 inches in height, and 15 7/8 – 22 inches in depth.

The functioning is pretty straightforward: it has a large control panel, with a generous screen and light indicators for each setting. You can select low, medium, and high for fan speeds, and you have 4 modes available: Auto, Cool, Dry, or Fan, plus an Energy Saver setting and a Sleep mode for night use. It won’t make a lot of noise, only 53 dB on low, 55 on medium, and a maximum of 57 dB on high. It comes with a fan-only option, in case you don’t want a particular temperature in your room, and it has a timer that allows you to easily set it up according to your schedule.

The Follow Me option lets you control it 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 can be washed from time to time. The alert LED on the interface will let you know when that time has come. You will enjoy a limited 1-year warranty from the moment of your purchase.

PROS

  • Programmable timer
  • Energy Saving Mode
  • Compatible with several types of wall sleeve
  • LED indicator lights
  • Washable filters
  • Several modes and speeds

CONS

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


Verdict

It provides you with a quick way to cool down your house, as well as allowing you to set up a schedule according to your work program. Additionally, it has air directing louvers, which allow you to select in which way you wish the cool air to go first, and the remote control acts as a portable thermostat. Thanks to the LED indicator lights you’ll know when the filters require washing.



9. Koldfront WTC8002WCO

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Specifications

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


We selected a model for limited areas of 300-350 sq. ft. because not all rooms need to be large and a very powerful unit could turn out to be useless. This one packs a power of 8,000 BTU, with an energy ratio of 10.6, so it will be your average consumer. 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 select manually between the three speeds of the fan or set it to Auto and it will adjust the speed on its own.

For added comfort in use, it comes with a programmable time and an energy-saving setting that will turn it off as soon as the desired temperature is reached, to limit the consumption. Even more, it provides a Sleep mode that will slightly increase the temperature overnight while returning to your settings after 6 hours, to prevent energy waste. The temperature ranges from 62 to 86F, considering this is a cool-only unit.

Additionally, the air conditioner also acts as a dehumidifier, being able to take out 2.1 pints of water from the air each hour. Some air impurities are also captured along the process, so the air quality will be greatly improved. The filter will keep microbes and bacteria away, and they require only to be washed on a regular basis, without the need of changing them all the time. For simple and stress-free operating, you will get a remote control and a large display on the unit, where all the settings will be visible. Thanks to its adjustable louvers, you can redirect the cold air to whatever side of the room you want. The product comes with a 2-year warranty for labor and parts.

PROS

  • Remote control and digital display for an easier use
  • 3 fan speeds for faster cooling
  • Adjustable louvers for cooling flexibility
  • Tightly sealed on your wall for more convenience

CONS

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


Verdict

This is a unit intended to be placed in small rooms due to its low BTU rating. However, it does pack some useful features like adjustable louvers and multiple working modes. It will turn out to be very simple to use and long-lasting, with a generous 2-year warranty for peace of mind.



Troubleshooting Guide


While there are differences in AC units, as they vary from brand to brand, there are some similarities that will let you troubleshoot on your own, in no time. So, to help you find your problem faster, without the hassle of searching for the manual, let’s have a look at the possible problems you might encounter when dealing with an air conditioner.

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 your house cool during hot summer days is essential for a healthy lifestyle. To achieve it, you’ll need an AC unit. While the regular models might take too much wall space, there are two other types that will help you achieve the same result but with different means. Through the wall air and window air conditioners bear similar attributes, and while they do perform the same task, of cooling your house, how they achieve that is different. So, depending on several elements – like what space you have in your house, the room dimension as well as the preferred installation type, you might be tempted to choose one over the other.

Window AC

They have an easy installation method, perfect for those who love DIY tasks or prefer to save some money. All you need is a free window, a nearby plug and you’re ready to go. Additionally, they offer you flexibility, as they are not exactly fixed in place. So, you can freely move it from one room to the other, if you decide you need the window for something else. However, since they are placed in the window, that particular window becomes fixed, stable, thus it will lose its traditional use. Moreover, window ACs tend to be quite loud, and, depending on how successfully you’ve installed it or not, they might even prove ineffective, if hot air still enters through the open window.

Through Wall AC

They require a wall sleeve and a hole through the wall. Their installation is fixed in place, so it’s impossible to move it once mounted, but it does provide a more ‘finished’ aesthetic feeling. They will help you save space and will allow you to open and close the window freely. Also, if you will want to replace it, for any reason, you will most likely find a compatible model with the same dimensions that will fit the wall sleeve. However, they have a more complicated installation process, as some might require professional work.

If you’re still not sure which types suit you best, take a look at the similarities and differences of each type.

Specification Wall AC Window AC
Installation Method It is installed through a hole made into the exterior wall. It requires a wall sleeve, and several types require professional work. It is positioned on a windowsill. It is a straightforward DIY process, and it doesn’t involve professional help.
Coverage Tends to have lower BTUs. Some models may reach higher BTUs levels. Tends to have higher BTUs. They can reach up to 35.000 BTUs.
Flexibility Permanent. Once it is mounted in a room, it stays there. Flexible. It can be moved around to whichever room you need it.

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 comes with one, otherwise, you’ll have to buy it separately.

Can I fit any AC in the wall sleeve?
It depends on what sleeve style you have. If you own a slide-out chassis unit – you can recognize it by the louvers or vents placed on all sides – then you’ll have to buy the exact type of AC as these types of sleeves aren’t interchangeable. However, if you own a through-the-wall type – it comes with vents placed on the back – then it can match any type of AC that has the exhaustion vents placed on the back, as well. These types are more frequent, as they come in different styles, sizes, and from different manufacturers.

How can I seal around it?
To keep pests from entering, the best way to seal around an in-wall air conditioning device is to use caulk. Acrylic caulk, especially, is easy to apply, and it will seal even the smallest holes in the wall. While it is durable, it will shrink in time, so ensure the area you’re planning on sealing is small rather than large.

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’d like your entire house cooled down, you’ll have to install several units.

Can it also heat?
It depends on what unit you own. Some models are indeed capable of producing both hot and cold air, making them extremely versatile for any season.


Conclusion

Keeping an optimal house temperature is always important as it can have an effect on your health in the long run. Especially during hot summer days, it is essential to have a good AC unit to help you keep in check the rising temperature. A though-the-all AC unit will make sure not to stand in your way, as it is compact and won’t take too much space from your room. Even more, according to what type of unit you acquire it will be able to even heat up the house, so it can be easily used during winter, as well. So, to help you make an informed decision, let’s review them quickly:

Best Overall: Frigidaire FFRH1822R2

Perfect for all seasons, Frigidaire FFRH1822R2 is an excellent option if you want versatility all-year-round. With both heating and chilling capabilities, it can cover very large areas over 1,000 sq. ft., being the most powerful unit we have reviewed. It offers plenty of setup freedom with the three speeds and the convenient timer. It will also help you limit the energy consumption so it will not overburden your electricity bill.

Our Choice: Koldfront WTC14012WCO

Koldfront WTC14012WCO is another strong unit that comes with 4-speed settings, thus allowing you to decide how fast you wish your house to be cooled down. Its dehumidification function will help keep in check the humidity, while its quiet performance will ensure it doesn’t bother you. You can easily personalize the operation thanks to the sleep mode and the timer that lets you set it according to your schedule.

Best Budget-friendly Through-the-wall AC: Perfect Aire 4PATW10000

Available at an accessible price, you won’t have to make a financial effort to acquire it. Perfect Aire 4PATW10000 comes equipped with everything you need to keep your room during hot winter days. Able to output 10.000 BTUs, it can keep any 400-450 sq. ft. room cooled down even on the hottest days. Moreover, its 4 modes and the dehumidification function offer you a wide range of combinations while the energy-saving feature will make sure not to raise your electricity bills.

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

Best for apartments and small-scaled rooms, Koldfront WTC8002WCO provides you with 8000 cooling BTUs, capable of covering an area from 300 up to 350 sq. ft. With 3 speeds, a dehumidifying setting, and self-moving louvers, it can be easily adjusted the way you like. Even more, it comes with an energy-saving function that will make sure to keep the electricity bills down.

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

While most people want the AC for hot summer days, it’s always good to have a unit that can work all year round. The LG LT1037HNR uses 10 000 BTU for the cooling part and has an additional 11 200 BTU for heating your house. Plus, it also acts as a dehumidifier, so it will reduce the discomfort you are likely to feel when the indoor humidity reaches high levels.

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.