2020 7 Best Through Wall Air Conditioners Worth the Investment

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Through wall air conditioners are a great way of installing AC through the walls in your home. Coming complete as one whole unit, that is the sleeve and its chassis, they work by venting through both the side and the back of the unit itself. Ultimately this means they eliminate the need for an outside unit or box. Long lasting and durable products, they are ideal for those walls that have a thickness of around eight inches or less, as standard.

Once they are in place, through wall air conditioner units work precisely like that of standard AC unit types. Sucking the hot air present in the room, it is all drawn into this unit in the wall. This hot air is then directed throughout the unit’s conditioning condenser and cooler to deliver a more cooling air quality back into the room.

These types of AC units have been designed as a more longer lasting fixture in the home and therefore make a great permanent installation piece. Though, such unit types aren’t as expensive as you may initially think. And, whether the room you’re looking to place this air conditioner wall unit into is small, medium, or more significant, there is a model size guaranteed to work well for all areas of the home.

What’s more, there are also many designs on the market which not only work to produce cooling air but, subsequently, offer a fantastic heating option also. Therefore, you get two for the price of one in this instance!

We’ve undertaken some research on the market to present you with a selection of no less than seven air conditioner units. With all of these units retailing online, from some top named suppliers, we believe you’ll find these some of the most top-performing through the wall AC units that deliver those perfect results – and all at a reasonable price overall.

Best Through-The-Wall Air Conditioners for Small Rooms

1. Friedrich Chill 6,000 BTU Window and Wall AC

If you have a smaller room type that you’re looking to place a through the wall air conditioning until in, then look no further than the Friedrich Chill. Available at Amazon, this wall Ac unit just goes to show that even those with reduced living space can still benefit significantly from the introduction of an AC unit. Friedrich Chill 6000 BTU Window Air Conditioner - angle

Very well priced, this is part of an affordable and reliable Friedrich Chill line which is primarily designed for those smaller of rooms in the home. This includes areas such as bedrooms, home additions, and those bonus rooms of up to 250 square feet in total.

Complete with this purchase you’ll find the 6000 BTU Friedrich air conditioner itself, an accompanying window kit, and an owner’s manual for ease of installation.

The concept of the Friedrich model is to provide an efficient cooling system, and this is a model which does so with a recommendation from a highly respected consumer reporting agency!

Offering a programmable cooling system which is simple to use, this allows you to navigate the desired room temperature by using digital controls and a remote. This means you can choose from three cooling speeds, four adjustable airflow directions, a fan only mode to combat room stuffiness, and a timer which is programmable to switch the unit on or off up to 24 hours in advance.

This model is a thoroughly energy efficient one, as well as being eco-friendly in its operation. This is due to its energy-efficiency ratio of 12.2. In a smaller sized air conditioning unit like this one, this is a much higher measurement of EER than you’d expect. A high EER reading determines the energy levels used as the unit cools, which also makes it more efficient throughout operation.

Complete with a slide-out chassis, the installation of the Friedrich Chill is easy to implement, while any further maintenance is hassle-free.

A washable filter included within the unit helps further protect against any possible buildup of bacteria and fungus growth.

Claiming to remove up to 1.8 pints of moisture as it sits in dehumidifier mode, this is a money saver product which actively works to converse energy as it cools.

There’s also an auto restart should any power failure occur, plus anti-intrusion protection to ensure continued safety preventing kick-ins. Finally, with side curtains that are designed as heavy duty extras any exterior noise and light are further reduced.


  • Energy Star rated.
  • Multiple operating modes available such that it cools, dehumidifies, and provides fan-only operation, in 3 fan speeds and adjustable oscillating louvers.
  • Programmable timer, which allows you to set the AC to turn on or off up to 24 hours in advance.
  • A money saver mode, multiple fan speeds, and a programmable timer all contribute to make this fan an efficient cooling system.
  • Slide-Out Chassis that allows you to easily slide out the AC from a window or wall without problems for maintenance.
  • Removable washable filter.
  • Filters are antimicrobial to protect against bacteria and fungus growth.
  • Automatically restarts with last selected settings in case of a power outage.
  • Entry Gard anti-Intrusion protection using steel retaining wire to secure the chassis to the sleeve and prevent intrusions

Best for Through-The-Wall Air Conditioners for Medium to Large Rooms

2. Koldfront WTC12001W Through-The-Wall Heat and Cool Air Conditioner

Koldfront sells a through the wall heat and/or cool air conditioner which they suggest is best placed in those rooms covering an area of 450 to 550 square feet in total. Koldfront WTC12001W 12,000 BTU 208/230V Through The Wall Heat/Cool Air Conditioner

Working on the basis of cooling the surrounding air during the warmer months and subsequently heating it during those colder of months, this offers a secure fit and fits neatly into the designated wall.

The design element of this model offers a safer and secure fixing, which also works to keep outside air and those pesky pests at bay during operation! This is ideal considered that many window units tend to have an issue whereby outdoor air seeps indoors through into the unit.

Though a wall sleeve is not included with this purchase, when you do buy one, you can work it in tandem with this unit and create a more durable product all-round. Boasting 12,000 BTU’s when it comes to cooling power and 10,600 BTUs when it comes to electric heating power, this model has a ratio of 9.5 when it comes to overall energy efficiency.

There is a choice of three fan speeds and an auto option here, alongside four-way air directional louvers.

Additionally, the remote control access here means you can operate the required temperature setting and fan speed from all around the room – and all with just one remote control device.

Featuring a practical sleep function, this energy saving sleep mode allows you to adjust the temperature of the unit periodically, then return it to the set temperature after six hours total.

There’s also an energy saver mode present in the function of the fan cycles. Here you can activate a fan for two minutes at ten minutes intervals. Then, once the room temperature exceeds the set temperature, the compressor will automatically switch back on, as needed.

Installation hardware and all weather seals are included with your purchase, though it’s worth highlighting beforehand that you will need a compatible Koldfront wall air conditioner sleeve to use alongside this. This is sold separately to the unit itself.


  • This unit is energy star rated
  • Equipped with an electronic thermostat and digital display, you can program your preferred temperature.
  • Cools and dehumidifies using 3 fan speeds and 4-way air directional  louvers.
  • Comes with a convenient remote control to easily operate the temperatures  and fan speed from anywhere in the room. 
  • Different operating modes including the Energy Saver Mode and energy sleep mode make this a very efficient air conditioning unit.

3. Garrison 14,000 Through-the-Wall Air Conditioner

The Garrison through the wall all air conditioner is both a heat and a cooling unit which is geared towards those rooms that measure from 550 to 700 square feet in total. GARRISON 2498545 Through-the-Wall Air Conditioner Heat & Cool, 14000 BTU

This model uses r-410 a refrigerant to cool and heat the room it’s placed in and does so with an energy star rating of 9.3 for its energy efficiency ratio, that is EER.

This is an AC wall unit which offers the use of a remote control to ensure a more convenient way to cool and heat.

It also features an electronic control panel which shows a digital display throughout. Therefore, this makes it one of the easiest of wall models to operate and also check its progress throughout its operation.

This model has an auto-restart feature. This means that should a power loss occur; the system will automatically reboot its operations. It does this though based on the previous settings – making sure you don’t have to start all over again and reprogram it just because of a power loss.

This is a lightweight model which makes it easier to install without any additional outside help. The concept of the Garrison 14000 BTU model is to encourage a more comfortable and more refreshing environment.


  • Rated as energy efficient.
  • Comes with a remote control and an electric controls with digital display.
  • Auto-restart such that it  automatically resumes operation in case of a power loss.

4. LG 9,800 BTU Through the Wall AC

Another product sold by Sylvane, this time it’s the LG wall AC model which is claimed to be the ideal solution for those that require a superior cooling solution but at the same time do not want to compromise on losing their current window view. LG 9,800 BTU Through-the-Wall Air Conditioner LT1016CER

Deemed the perfect choice here, it has a cooling power of 9,800 BTU’s, which means it is guaranteed to make a difference to those inevitable sweltering summer days that many of us experience at various times throughout a year!

This model is aimed at those rooms with a size of up to 450 square feet in total. Included with its purchase of the wall air conditioner unit itself is an installation guide, owner’s manual and a handy remote control device.

The LG is an energy star efficient model, with a rating of 10.6 CEER. This means that when it operates in its energy saver mode, it will work hard to save you both energy and money. It achieves this by automatically testing the room in which it sits in and then cleverly determining when the air needs cooling.

Its additional practical energy saving features also ensure that it will turn to this default energy saver mode, whenever you switch it on. Therefore, you don’t have to go through selecting it every time and don’t have to worry about forgetting to do this regularly!

This unit also features additional benefits, alongside one of which is a 24-hour programmable timer and a built-in thermostat.

The additional operating modes of the LG include a cool mode, a fan only mode, and a dry mode. Therefore, you can actively set your ideal temperature, from 60 to 86 degrees, while operating it from three fans speeds. Then whenever you feel the weather is milder, you can then activate the fan to allow the fresh air to blow in and circulate the room. Finally, with its dry mode operation, you can work to dehumidify your living area without cooling it.

This model also has a wall sleeve included with it. That means that installation is swift and straightforward and can be undertaken alone, without the need for any outside help in the process.

Furthermore, this air conditioner unit has a washable air filter, is programmable, allows multi air direction control, and will automatically restart if there’s a power failure.


  • Energy star rated.
  • Comes with a Remote Control and programmable timer for setting your AC or adjusting fan speed.
  • Removable and washable air filter – there is a LED notification light that lets you know when it’s time to clean it.
  • Auto Restart when power is restored after an outage.
  • Cools and dehumidifies using 4 operating modes,  3 fan speeds and multi-air directional louvers that can be adjusted allowing you to direct air flow where it is needed the most.
  • Energy Saver mode feature saves you energy and money as it automatically tests room air to determine when cooling is needed and is also the default setting to ensure you don’t have to re-select it every time.

5. LG 10,000 BTU Through-the-Wall Air Conditioner

Another product from the suppliers at Sylvane and yet another fantastic LG model, this is a through the wall air conditioner that works to cool those room sizes of up to 500 square feet in total and with a BTU rating of 10,000. LG LT1036CER 10,000 BTU Wall Air Conditioner

Not only does this provide those bigger room sizes with a good quality AC unit, but it does so alongside saving you money as it works to beat the heat!

This model is a 10.6 CEER rated one, which makes it a completely energy efficient model, and it is energy star certified. This means that each time you switch this unit on, you can be assured in the knowledge that you’re always going to be saving both energy and money also made possible by the automatic Energy Saver Mode.

With no need to keep reprogramming the unit to achieve this, the unit works hard, so you don’t have to, scanning the room for the air quality while determining when the cooling process is needed. When it believes the room requires the cooling element, it will immediately start the compressor to cool your space. Then, when it has reached the more comfortable of temperatures, it will then stop performing its operation.

In addition to this, if you prefer to command your AC unit to your own requirements, you can take advantage of its 24-hour programmable timer. So, should you wish to get the room prepared minutes before you return home, you can do so with ease setting it to a specified time and length of the cycle.

The remote control included with this model allows you to further use the unit with ease, setting up the most perfect environment to suit your individual needs and requirements.

Alternatively, if you wish to select and use the fan only mode or the dry mode and work on encouraging a fresher air or humidifying experience, this too is also simple to obtain.

In addition to such great features, here you can also utilize its auto restart feature, ensuring your unit retains its pre-setting before any power failures. In addition, this air conditioner unit comes complete with a washable air filter. Thus, you get to prolong the life of your unit while keeping it dust free. Better still, this model has a LED light which will notify you when the filter needs cleaning!


  • Energy Star certified. 
  • 4 operating modes to chose from making it very efficient in operation.
  • Durably constructed with an anti-corrosion exterior to protect against the weather elements.
  • Comes with a remote control with 24-hour programmable timer.
  • Auto restart feature in case of power failure.
  • Washable air filter that you’ll be notified of once its time to clean them by an LED notification light.
  • Cools and dehumidifies using 4 operating modes,  multiple fan speeds and adjustable louvers

6. Keystone 12,000 BTU Through-the-Wall Air Conditioner with Heat

Another product sold by Sylvane, the Keystone air conditioner wall unit may be a little pricier, but the many benefits and features it offers in abundance more than makeup for this increased price tag here. Best Through Wall Air Conditioners

This is stated as offering all users with an impressionable performance all round. That’s perhaps why it’s not only aimed at those living rooms and basements but also hotel rooms.

Delivering both a cooling and heating function, this works to provide a comfortable environment for rooms that are as large as 550 square feet in total.

A powerful and thoroughly efficient model, it comes complete with the unit itself, an owner’s manual, a remote control, and an additional interior trim kit.

Claimed to offer you the most perfect indoor environment for 365 days of the year, this has a summer cooling element and a supplemental heat element. Therefore, during those hotter months, you can stay comfortable at 12,000 BTU’s of cooling power. Then when you need the additional warmth on those colder of days, there’s 10,600 BTU’s to keep you feeling toasty.

Additionally, there is a moisture removal element on this product. This means that problematic stuffiness is prevented as it works to remove up to 2.5 pints of excess moisture, doing so every hour!

With the aim of keeping you comfortable but equally reducing your energy costs as much as possible, this unit has a number of energy saving performance modes.

The energy saver mode itself will regularly work to check the temperature of your room, only activating the unit when needed and then turning it off when the desired room temperature is reached.

There is additionally an adjustable thermostat, so you can set an ideal temperature between two figures, and your unit will work efficiently to maintain this automatically.

There’s also a sleep mode which not only saves energy as you sleep but ensures continued comfort throughout the night as it gradually increases to the correct room temperature for sleeping in.

The remote control aspect of this particular model has a generously designed follow me point. Therefore, when it is engaged, it will read the precise temperature of the location of the remote and relay this information straight back to the AC unit.

With a programmable timer, electronic control panel, automatic restart and a quieter than normal operation, this is a simple to install model, but one which will require an additional purchase of the necessary wall sleeve.


  • Even on its highest fan speed, this AC is said to be quiet in operation.
  • 10,600 BTUs of supplemental heat for colder days.
  • Multiple operating modes for cooling, dehumidifying, and heating with the help of 3 fan speeds and 4-way adjustable louvers.
  • Electronic Control Panel with an LED display, Programmable Timer for easy operation.
  • Automatic restart in case of power failure.


  • Not energy star rated

7. Garrison 12,000 Btu Through-The-Wall Air Conditioner

Our final through the wall air conditioning unit is once more from one of our favorite makers Garrison. Yet another higher cost model on the list, it is still very well priced and works to offer many more features and benefits than its cheaper counterparts. This provides you with a fantastic all-around air conditioning solution. GARRISON 12,000 Btu Through-The-Wall Air Conditioner, 115 Volts, Energy Star

This model works to cool those rooms which fall into the sizes of 450 to 550 square feet in total. It does this by utilizing an r-410a refrigerant.

What’s great about this practical Garrison model is its energy saving feature. This is a useful feature which optimizes and manages the system operation while minimizing its power consumption where possible. In short, the unit will only operate when is necessary, saving you both money and energy in the process.

Additionally, its fantastic filter indicator is perfect at notifying you when the filter inside your unit needs to be cleaned or replaced. Thus, you ensure that not only is the air circulating clean and fresh, but you ensure the unit can operate to the best of its ability with a clean functioning filter in place.

There is a remote control included with this unit’s purchase making it a more convenient cooling solution to use and access. Additionally, this model offers an electronic control and a panel that has an easy to read digital display.

Once again, as with all Garrison through the wall air conditioner units, this practical model aims to promote comfort combined with coolness.

A more lightweight of models, it has a cooling power of 12,000 BTU’s and allows you to make adjustments from anywhere in the room to suit your personal preferences and temperature requirements.

An easy to install unit, this quieter performing model is said to be the easier of AC units to install and requires very little in the way of time and effort to get set up and started with. It is also one of the better models for installing without the need for outside help.


  • Energy star rated.
  • Includes a remote control with electric control panel with digital display for fast and convenient operating.
  • Removable and washable filters that with filter indicator that will notify you when the filter needs to be cleaned or replaced.
  • Energy saver feature to help minimize power consumption.

Final Thoughts on Best Window Evaporative Coolers for Window Spaces

Reading through the many well-received reviews on all of these through the wall air conditioner units, it seems it has never been easier to install and operate these unit types within any area of your home.

With an ability to purchase a specific model type that suits the needs of your room size, whether small or large, it’s certainly easy to work on keeping your immediate environment cool to promote a more comfortable living space as a result.

What’s more, some of these models reviewed also offer you the added option of heating the room as well as working on cooling it – therefore they really are an investment worth considering.

Undeniably, all these units are well within an adequate price range, considering the many benefits and features they offer. With each and every one of these AC units promoting and furthermore encouraging a more energy efficient model all-round, not only are you saving money when you switch your unit on; you’re also doing your part in conserving energy each time!

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