Living in an apartment often comes with its own set of cooling challenges. Window units can block your view and be a hassle to install, while central AC might not be an option. That’s where a through-the-wall air conditioner comes in handy! These units offer a sleek, permanent solution that keeps your windows free and your space perfectly chilled. But with so many options out there, how do you find the best through the wall air conditioner for apartment living?
We’ve scoured the market to bring you a comprehensive list of top-performing wall AC units, focusing on features like BTU capacity, energy efficiency, ease of installation, and smart capabilities. Whether you’re cooling a cozy studio or a larger living area, we’ve got you covered. Let’s dive in and find the perfect climate control solution for your home!
How to Choose the Right Through-the-Wall AC Unit
Before we jump into the reviews, it’s worth noting a few key considerations. Pay attention to BTU (British Thermal Unit) ratings – this indicates cooling power, and you’ll want it matched to your room size. Also, look for energy-saving features, quiet operation, and whether the unit includes heating capabilities for year-round comfort. Keep an eye on voltage requirements too, as some units need a special outlet.
Here are our top picks for the best through the wall air conditioner for apartment dwellers:
1. LG 11,800 BTU Through the Wall Air Conditioner, 115V,…

This LG unit stands out for its impressive cooling power and commitment to energy efficiency, using the eco-friendly R-32 refrigerant. It’s designed specifically for through-the-wall installation, making it a permanent and visually appealing addition to your apartment. With its ability to cool up to 530 square feet, this AC is a fantastic choice for medium to large living spaces where reliable and efficient climate control is a must.
Key Features:
– Energy Efficient R-32 Refrigerant (EER 10.6)
– 11,800 BTU cooling capacity for rooms up to 530 sq. ft.
– 3 cooling speeds and 3 pre-programmed modes (Energy Saver, Dry, Cool)
– Turbo fan for powerful air circulation
– Includes trim kit, plastic mesh grille, washable filter, and remote
Pros:
– High cooling capacity suitable for larger rooms
– Eco-friendly and energy-efficient refrigerant
– Multiple modes for tailored comfort
– Comprehensive accessories included for installation
Cons:
– Only 115V, ensure your outlet can handle it
– Not suitable for window installation
User Impressions:
Customers frequently praise this LG unit for its effective cooling and quiet operation, especially for its BTU size. Many appreciate the Energy Saver mode, which helps keep electricity bills in check. The included trim kit also gets a nod for making the installation look clean and professional.
2. ROVSUN 8000 BTU Through the Wall Air Conditioner with…

The ROVSUN 8000 BTU unit offers versatile climate control for smaller apartments or specific rooms like bedrooms and home offices. What makes it special is its dual cooling and heating functionality, providing comfort all year round. The easy-clean design is a bonus, ensuring fresh air and hassle-free maintenance, which is a huge plus for busy apartment living.
Key Features:
– 8,000 BTU cooling and heating for up to 350 sq. ft.
– Dual control via LED panel or remote
– 4 versatile modes (Cool/Heat/Fan/Dry) with 3 fan speeds
– 24-hour timer
– Removable, washable front-panel filter
– Quick DIY installation (fits standard 25.5″ wall sleeves, sleeve not included)
Pros:
– All-in-one cooling and heating solution
– Convenient dual control options
– Easy to clean and maintain filter
– Relatively simple installation process
Cons:
– Wall sleeve not included, must be purchased separately
– 8,000 BTU might be insufficient for very large rooms
User Impressions:
Users love the ROVSUN’s ability to both cool and heat their spaces efficiently. The remote control is often highlighted as a convenient feature, and the easy-to-clean filter is a hit with those who prioritize air quality. For its size, many find it a powerful and reliable unit.
3. LG 11,200 BTU Through the Wall Air Conditioner, 230/208V,…

If you’re looking for a robust through-the-wall solution that also battles the chill, this LG 11,200 BTU unit is a fantastic contender. Its supplemental heat option means you’re prepared for any season, making it a true year-round climate control device for rooms up to 550 square feet. The thoughtful inclusion of features like auto restart and a filter light reminder really sets it apart, adding to its overall usability.
Key Features:
– 11,200 BTU cooling and supplemental heat option (60°F-86°F thermostat)
– 2 cooling, heating, and fan speeds
– Digital control panel and remote control
– 4-way air deflection for optimal airflow
– 24-hour on/off timer, filter light reminder, trim kit, washable filter
– Auto Restart after power failure
– Cools rooms up to 550 square feet
Pros:
– Powerful cooling and effective heating capabilities
– Auto Restart is a convenient safety feature
– Digital controls and remote enhance usability
– Covers a significant room size
Cons:
– Requires a special 230/208V LCDI Plug (NEMA 6-20)
– Higher initial setup cost if electrical work is needed
User Impressions:
Reviewers frequently commend this LG unit for its consistent performance in both cooling and heating, often noting its effectiveness in larger master bedrooms or living areas. The 4-way air deflection and auto-restart feature are particularly appreciated for user convenience.
4. BLACK+DECKER Window or Through The Wall Air Conditioner…

This BLACK+DECKER unit is a true powerhouse, offering a staggering 18,000 BTU of cooling, capable of chilling spaces up to 1,000 square feet! What makes it incredibly versatile is its dual installation option – you can use it as a window unit or, importantly for our focus, install it through the wall. This flexibility, combined with its high cooling capacity, makes it ideal for larger apartments, open-plan living areas, or even whole floors.
Key Features:
– 18,000 BTU cooling for up to 1,000 sq. ft.
– Dual installation: Window or Through-the-Wall (sleeve and parts included)
– Four fan levels: Auto, Low, Medium, High
– Full-function remote control with sleep mode, energy saver, 24-hour timer
– Accordion style window panels (for window installation)
Pros:
– Exceptionally high cooling capacity for large spaces
– Flexible installation options
– Comprehensive remote control features for energy saving
– Wall sleeve and parts for through-the-wall installation are included
Cons:
– Through-the-wall installation and wiring may require a professional
– Might be overkill for smaller apartments, consuming more energy
User Impressions:
Customers are consistently impressed with the sheer cooling power of this BLACK+DECKER unit, often stating it can cool very large rooms quickly. The versatility of installation is a major plus, though some advise professional help for the through-the-wall setup due to its size and electrical requirements.
5. LG 14,000 BTU Through the Wall Air Conditioner, 230/208V,…

For those seeking robust cooling for substantial living areas, this 14,000 BTU LG unit is a top-tier option. It’s designed to efficiently cool rooms up to 700 square feet, making it perfect for spacious open-concept apartments. Its focus on strong cooling with adjustable fan speeds and convenient digital controls ensures maximum comfort, while the Auto Restart feature adds peace of mind. This model truly delivers when powerful, consistent cooling is your priority.
Key Features:
– 14,000 BTU cooling for rooms up to 700 sq. ft.
– 3 cooling and fan speeds with Auto Cool
– Digital control panel and remote control
– 4-way air deflection
– Filter light reminder, trim kit, washable filter
– Auto Restart after power failure
– 24-hour on/off timer
Pros:
– Excellent cooling capacity for very large apartments
– User-friendly digital controls and remote
– Auto Restart function adds convenience
– Flexible airflow control
Cons:
– Requires a special 230/208V LCDI Plug (NEMA 6-20)
– Does not include heating function
User Impressions:
This LG unit receives high marks for its powerful and rapid cooling capabilities. Users appreciate how effectively it handles large spaces, making it a go-to for many apartment dwellers with open floor plans. The remote and auto-restart are frequently mentioned as convenient features.
6. Keystone 14,000 BTU 230V Wall Mounted Air Conditioner &…

The Keystone 14,000 BTU unit isn’t just about powerful cooling; it brings smart comfort directly to you with its innovative “Follow Me” remote control. This remote senses the temperature where you are and adjusts the AC accordingly, ensuring personalized comfort. Beyond its smart features, it’s also highly efficient, capable of cooling up to 700 square feet while removing a significant amount of moisture from the air. It’s a fantastic blend of power and intelligent design for any large apartment.
Key Features:
– 14,000 BTU cooling for rooms up to 700 sq. ft.
– 3 cooling modes, 3 fan speeds, 4-way adjustable air louvers
– Removes 2.9 pints of moisture per hour (dehumidification)
– Programmable timer
– “Follow Me” smart remote control
– Energy Saver and Sleep modes
– Requires 230-volt/20-amp electrical outlet
– Easy installation with standard universal interior trim kit
Pros:
– “Follow Me” remote provides precise, personalized comfort
– High cooling capacity for large spaces
– Effective dehumidification
– Energy-saving modes
– Includes trim kit for clean installation
Cons:
– Requires a dedicated 230V/20A electrical outlet
– No heating function mentioned
User Impressions:
Customers consistently rave about the “Follow Me” feature, calling it a game-changer for maintaining ideal comfort zones. The unit’s cooling power and dehumidifying capabilities are also highly praised, making it a favorite for those in humid climates.
7. ROVSUN 10000 BTU Through the Wall Air Conditioner with…

This ROVSUN 10,000 BTU unit offers excellent climate control for medium-sized apartments (up to 450 sq. ft.), providing both powerful cooling and heating. Its true standout, however, is the commitment to user convenience with dual control options and a quick, relatively DIY-friendly installation process. You get year-round comfort without a complicated setup, which is often a big concern for apartment renters or owners.
Key Features:
– 10,000 BTU cooling and heating for up to 450 sq. ft.
– Dual control via intuitive LED control panel or remote
– 4 versatile modes (Cool/Heat/Fan/Dry) with 3 adjustable fan speeds
– 24-hour timer
– Easy-clean removable front-panel filter
– Quick DIY installation (fits standard 25.5″ wall sleeves, sleeve not included)
– 230V operation
Pros:
– Provides both cooling and heating for year-round use
– Convenient dual control options
– Easy maintenance with a washable filter
– Relatively straightforward DIY installation
Cons:
– Requires 230V outlet
– Wall sleeve not included
User Impressions:
Many users find this ROVSUN model to be a fantastic all-season solution, praising its ability to effectively heat as well as cool. The ease of installation, especially for those with existing wall sleeves, is frequently highlighted, making it a popular choice for apartment upgrades.
8. ROVSUN Smart 8000 BTU Through the Wall Air Conditioner…

For the tech-savvy apartment dweller, this ROVSUN Smart 8000 BTU unit is an absolute game-changer. It combines powerful all-season climate control (cooling, heating, dehumidifier, fan) with cutting-edge smart features like Wi-Fi connectivity and voice control compatibility with Alexa/Google Assistant. Imagine adjusting your apartment’s temperature from your phone before you even walk in the door – now that’s modern comfort!
Key Features:
– 8,000 BTU cooling, 4,200 BTU heating, dehumidifier & fan for up to 350 sq. ft.
– LED display, 5 modes (Heat, Auto, Cool, Dry, Fan), 3 speeds
– 24H Timer and ECO energy-saver
– Washable filter
– Swing button for airflow adjustment
– Wi-Fi enabled & voice control (Alexa/Google Assistant compatible)
– Simple installation (fits standard 25.5” wall sleeve, sleeve not included)
– 1-year warranty
Pros:
– Smart features (Wi-Fi, voice control) for ultimate convenience
– All-in-one cooling, heating, dehumidifying, and fan functions
– Energy-saving ECO mode
– Excellent for smaller apartments or individual rooms
– 1-year warranty for peace of mind
Cons:
– Wall sleeve not included
– 8,000 BTU might be too small for larger open-plan apartments
User Impressions:
The smart features are definitely the star of the show for this ROVSUN unit, with users loving the ability to control it remotely via app or voice. Its multi-season functionality also gets high praise for making it a versatile and efficient choice for smaller living spaces.
9. ROVSUN 12000 BTU Through the Wall Air Conditioner with…

This 12,000 BTU ROVSUN model hits a sweet spot, providing powerful cooling and heating for larger studio apartments or medium-sized multi-room setups (up to 550 sq. ft.). Its strength lies in its balanced offering: robust performance, dual-season functionality, and user-friendly controls, all packaged in a design that’s relatively easy to install. It’s a reliable workhorse for consistent comfort without breaking the bank.
Key Features:
– 12,000 BTU cooling and heating for up to 550 sq. ft.
– Dual control via LED panel or remote
– 4 versatile modes (Cool/Heat/Fan/Dry) with 3 adjustable fan speeds
– 24-hour timer
– Easy-clean removable front-panel filter
– Quick DIY installation (fits standard 25.5″ wall sleeves, sleeve not included)
– 230V operation
Pros:
– Strong cooling and heating for larger apartment spaces
– Convenient dual control options
– Easy to clean and maintain filter
– DIY-friendly installation (if sleeve is present)
Cons:
– Requires 230V electrical connection
– Wall sleeve not included
User Impressions:
Users frequently comment on the effective cooling and heating capabilities of this 12,000 BTU ROVSUN unit, finding it suitable for larger bedrooms or living rooms. Its intuitive controls and reliable performance make it a popular choice for those needing a solid, all-around through-the-wall AC.
10. Keystone 10,000 BTU Through the Wall Air Conditioner and…

The Keystone 10,000 BTU through-the-wall AC offers a smart blend of effective cooling, dehumidification, and energy-saving features, perfect for small to medium-sized apartments up to 450 sq. ft. What really shines here is its “Follow Me” smart remote, which ensures the temperature is just right where you are, not just at the unit. Coupled with its excellent energy-saving modes, it’s a great option for those who want both comfort and a lower electricity bill.
Key Features:
– 10,000 BTU cooling for up to 450 sq. ft.
– 3 cooling modes, 3 fan speeds, 4-way adjustable air louvers
– Built-in dehumidification (removes 2.3 pints/hour)
– Programmable timer
– “Follow Me” smart remote control
– Energy Saver and Sleep modes
– 115V operation
– Easy installation with universal interior trim kit
Pros:
– “Follow Me” remote for precise comfort control
– Effective cooling and dehumidification
– Energy-saving modes help reduce utility costs
– Standard 115V connection
– Includes trim kit
Cons:
– No heating function mentioned
– May not be sufficient for very large, open-concept apartments
User Impressions:
Reviewers consistently highlight the effectiveness of the “Follow Me” remote for personalized comfort. The unit’s ability to cool and dehumidify smaller apartments efficiently, combined with its energy-saving features, makes it a highly recommended choice for budget-conscious comfort.
Finding Your Perfect Apartment Cooling Companion
Choosing the best through the wall air conditioner for apartment living truly depends on your specific needs: the size of your space, your budget, and whether you need heating as well as cooling. We hope this guide has given you a clear picture of some of the top options available. Each unit brings something unique to the table, from powerful BTU ratings to smart home integration.
No matter which one you choose, investing in a high-quality through-the-wall AC unit means enjoying consistent, comfortable temperatures without sacrificing your precious window views or floor space. Happy cooling!
FAQ Section: All Your Through-the-Wall AC Questions Answered
Q1: How do through-the-wall AC units differ from window units?
A: Through-the-wall AC units are designed for permanent installation into an exterior wall, often requiring a wall sleeve. They offer a more aesthetically pleasing look as they don’t block windows, provide better security, and can be more energy-efficient in the long run. Window units, on the other hand, are temporary, sit in an open window, and are generally easier to install but can obstruct views and be less secure.
Q2: What BTU capacity do I need for my apartment?
A: The BTU capacity depends on your room size. A general rule of thumb is:
– 5,000-6,000 BTU: 150-250 sq. ft.
– 7,000-8,000 BTU: 250-350 sq. ft.
– 9,000-10,000 BTU: 350-450 sq. ft.
– 12,000-14,000 BTU: 450-700 sq. ft.
– 15,000-18,000 BTU+: 700 sq. ft. and up
Consider factors like ceiling height, sun exposure, and the number of windows to refine your choice.
Q3: Are through-the-wall AC units energy efficient?
A: Many modern through-the-wall AC units are quite energy-efficient, especially those with higher EER (Energy Efficiency Ratio) ratings or features like “Energy Saver” or “Sleep” modes, and programmable timers. They are generally better sealed than window units, which can prevent air leaks and improve efficiency. Look for models with an EER of 10.0 or higher for good efficiency.
Q4: Can I install a through-the-wall AC myself?
A: If you’re replacing an existing through-the-wall unit that uses the same wall sleeve and electrical connection, a DIY installation might be feasible with basic tools and some handy skills. However, if you’re creating a new opening in a wall, it’s strongly recommended to hire a licensed professional for structural integrity, proper sealing, and electrical wiring, especially for 230V units.
Q5: Do through-the-wall units also provide heat?
A: Yes, many through-the-wall AC units offer a supplemental heating function, making them versatile for year-round climate control. These are often referred to as “heat/cool” units. Always check the product specifications if a heating option is important to you.
Q6: What is a wall sleeve, and do I need one?
A: A wall sleeve is a metal box or enclosure that is installed through the wall, creating a precise opening for the AC unit to slide into. It provides structural support, insulation, and a weather-tight seal. Most through-the-wall AC units require a compatible wall sleeve, and some units include one or specify which standard sleeve size they fit. If you don’t have an existing sleeve, you’ll need to purchase and install one before the AC unit itself.
Q7: How often should I clean my AC filter?
A: For optimal performance and air quality, it’s generally recommended to clean your through-the-wall AC’s filter every 2-4 weeks, especially during periods of heavy use. Many modern units have removable, washable filters and even a “filter light reminder” to prompt you when it’s time.
Q8: What are some smart features to look for in a through-the-wall AC?
A: Modern through-the-wall AC units can come with a host of smart features, including Wi-Fi connectivity for app control from your smartphone, voice assistant compatibility (like Alexa or Google Assistant), “Follow Me” remotes that sense the temperature around you, programmable 24-hour timers, and energy-saving modes. These features enhance convenience and help optimize energy usage.