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When the heat rises and you need reliable cooling without sacrificing window views or security, a through-the-wall air conditioner is your go-to solution. These units offer powerful BTU performance, seamless installation through a wall sleeve, and a clean, modern look that blends into your home’s design.
Selecting the best through-the-wall air conditioner requires attention to key factors like BTU rating and square footage coverage, voltage requirements (115V vs. 230V), and extra functions such as dehumidifiers, heaters, Wi-Fi control, or supplemental heat. You’ll also want to consider noise levels, energy efficiency ratings, and ease of installation. Comparing warranty terms and brand reputation can further guide you toward a durable, long-lasting unit.
Let’s get started!
Our Top Picks at a Glance
| Product | Best For | Buy Now |
|---|---|---|
| Frigidaire 12,000 BTU Through-the-wall Air Conditioner and Dehumidifier | Best Overall | Buy |
| LG 10,000 BTU Through the Wall Air Conditioner | Best Value | Buy |
| Frigidaire 230V 14,000 BTU Wall Air Conditioner | Best for Large Rooms | Buy |
Best Through The Wall Air Conditioner
1. Best Value: LG 10,000 BTU Through the Wall Air Conditioner
- Energy Efficient R-32 Refrigerant: With an energy efficiency ratio (EER) of 10.7, this wall unit employs the most efficient refrigerant currently used in the industry
- Wall AC Installation: This 9,800 BTU wall mounted ac unit is suited for a through the wall installation; It is not properly vented for a standard window installation
- Confident Cooling: This ac wall unit features 3 cooling speeds and 3 pre-programmed modes meant to cool rooms up to 440 square feet using a turbo fan; Energy Saver mode keeps the fan running to circulate air but turns off the compressor when your desired room temperature is reached; Dry mode removes up to 2.9 pints of moisture per hour; 4-way air deflection gives you ultimate flexibility
This LG 10,000 BTU through-the-wall air conditioner cools up to 440 sq. ft., making it ideal for bedrooms, living rooms, and small apartments. Equipped with a convenient remote, you can toggle between three cooling and fan speeds without leaving your seat.
Installation is straightforward in any standard wall sleeve, and the white finish blends seamlessly into most interiors. The unit’s compact design optimizes space, while its efficient compressor keeps running costs manageable.
With a 4-star customer rating, this model offers reliable performance and a quiet operation that won’t disturb your daily activities or sleep.
Pros
- Remote control with three speeds
- Cools up to 440 sq. ft.
- Compact, space-saving design
Cons
- No dehumidifier function
- 115V model only
2. Best for Medium Rooms: Frigidaire 12,000 BTU Wall Air Conditioner (Dehumidifier & Fan)
- Enjoy Better Air: This wall mounted air conditioner comes with a built-in air ionizer that reduces airborne particles to improve your air quality so you can breathe easier in your space
- Keep The Air Flowing: Switch the wall ac unit to fan mode to help air circulate throughout the room; choose between 3 speeds to find the best balance for your space
- Control from the Couch: Use the included remote control to adjust your wall air conditioner’s settings from afar without having to get up
This Frigidaire 12,000 BTU through-the-wall air conditioner cools rooms up to 550 sq. ft. and features a built-in dehumidifier to maintain comfortable humidity levels. The tri-speed fan delivers customizable airflow.
With its quiet, energy-efficient operation and easy-to-use remote control, you’ll enjoy cool air without excessive noise or energy bills. Designed for standard 115V power outlets, installation is hassle-free in most wall sleeves.
The sleek white housing blends neatly with any decor, and a 4.3-star average rating reflects the unit’s consistent performance.
Pros
- Dehumidifier included
- Quiet, energy-efficient operation
- Remote control convenience
Cons
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- 115V only
3. Best Universal Fit: LG 11,800 BTU Through the Wall Air Conditioner
- Energy Efficient R-32 Refrigerant: With an energy efficiency ratio (EER) of 10.6, this ac wall unit employs the most efficient refrigerant currently used in the industry
- Wall Mounted AC Unit: This 11,800 BTU ac wall unit is suited for a through the wall installation; It is not properly vented for a standard window installation; The wall air conditioner has dimensions of 24” W x 20.1” D x 14.4” H
- Confident Cooling: This air conditioner features 3 cooling speeds and 3 pre-programmed modes meant to cool rooms up to 530 square feet using a turbo fan
Ideal for rooms up to 530 sq. ft., this LG 11,800 BTU through-the-wall unit boasts a universal design that fits most standard sleeves. Three cool and fan speeds let you fine-tune your comfort settings via remote control.
The 115V power requirement suits most homes, and the white exterior integrates seamlessly into apartments or bedrooms. Despite a 3.5-star rating, many users praise its reliable cooling power and simple installation.
Optimize your living space without compromising performance, and enjoy whisper-quiet operation during day or night.
Pros
- Universal sleeve compatibility
- Remote control with multiple speeds
- Cools up to 530 sq. ft.
Cons
- Lower customer rating
- 115V only
4. Best Overall: Frigidaire 12,000 BTU Through-the-wall Air Conditioner and Dehumidifier
- 3-in-1 Wall Air Conditioner: Designed for rooms up to 550 square feet, this air conditioner unit features digital temperature controls with 12,000 BTU of cooling power, 3 fan speeds, and excess moisture removal up to 3.3 pints per hour
- Easy to Clean Filter: Capture dust from the air and keep your air conditioner running efficiently with an easy to clean washable dust filter with an alert when it's time to clean
- Programmable Timer: Set the ac unit to turn on and off in half hour increments, or whenever you want, so that you can maintain optimal comfort while at home
With a robust 12,000 BTU capacity and built-in dehumidifier, this Frigidaire model cools spaces up to 550 sq. ft. effortlessly. The 4.5-star rating reflects its quiet operation and dependable performance.
Control the unit via remote and choose from multiple fan speeds. Standard 115V power makes installation easy in most existing wall sleeves.
The white finish offers a clean look, while energy-efficient operation helps keep utility costs down during peak summer months.
Pros
- High BTU for large rooms
- Built-in dehumidifier
- Quiet performance
Cons
- 115V only
- Higher price point
5. Best Budget: Whirlpool 10,000 BTU Through the Wall Air Conditioner (115V)
- Exceptional Cooling: This powerful and efficient 10,000 BTU wall mounted ac unit is best for spaces up to 450 square feet with an attached, 5.9-ft LCDI 3-prong plug that will fit any 115V electrical outlet
- Cooling Flexibility: With 8-way directional louvers, 3 fan speeds, 4 operation modes, and a temperature setting range of 62-86 degrees, you can customize your cooling to fit your specific needs
- Universal Fit Size: With dimensions of 20.3” D x 24.2” W x 14.5” H, this ac wall unit fits into sleeves 24.5”-27” wide and comes with a trim kit and rear grille to finish off the look
This Whirlpool 10,000 BTU through-the-wall unit cools up to 450 sq. ft. and includes a handy dehumidifier to improve indoor comfort. Choose from multiple fan speeds and adjust settings with the remote control.
Running on a standard 115V circuit, installation is straightforward for apartments and small homes. The white finish integrates easily with most interiors.
A 3.9-star rating indicates mostly positive feedback for performance and value, making it an excellent budget pick.
Pros
- Affordable price
- Dehumidifier function
- Remote control included
Cons
- Moderate noise level
- 115V only
6. Best Smart Option: Frigidaire 8,000 BTU Smart Wall Air Conditioner
- Enjoy Better Air: This wall mounted air conditioner comes with a built-in air ionizer that reduces airborne particles to improve your air quality so you can breathe easier in your space
- Keep The Air Flowing: Switch the wall ac unit to fan mode to help air circulate throughout the room; choose between 3 speeds to find the best balance for your space
- Control from the Couch: Use the included remote control to adjust your wall air conditioner’s settings from afar without having to get up
This Frigidaire 8,000 BTU smart wall air conditioner cools up to 350 sq. ft. and pairs with your Wi-Fi network for remote control via mobile app or voice assistants. An integrated dehumidifier and fan mode add versatility.
Energy-efficient operation keeps running costs low, and the remote provides traditional control options. This 115V unit installs in standard sleeves for hassle-free setup.
A 4.1-star rating highlights its reliable cooling and smart-home integration for tech-savvy users.
Pros
- Wi-Fi and smart control
- Compact design
- Dehumidifier and fan modes
Cons
- 115V only
- Limited to small rooms
7. Best for Large Rooms: Whirlpool 14,000 BTU 230V Through-the-Wall Air Conditioner with Heat
- Exceptional Cooling: This powerful, 14,000/13,600 BTU through the wall air conditioner with 10600/8600 BTU supplemental heat (not meant to be used as a primary heat source in the coldest months) is best for spaces up to 700-sq. ft. with an attached, 4.9-ft plug that will fit any 230V/20A electrical outlet
- Cooling Flexibility: With 8-way directional louvers, 3 fan speeds, and 4 operation modes you can customize your cooling to fit your specific needs
- Universal Fit Size: With dimensions of 20.3” D x 24.2” W x 14.5” H, this air conditioner fits into sleeves 24.5”-27” wide and comes with a trim kit and rear grille to finish off the look
Cooled and heated air in one unit—the Whirlpool 14,000 BTU 230V through-the-wall model tackles spaces up to 700 sq. ft. with supplemental heat, dehumidification, and multiple fan speeds.
Remote control and digital display let you switch between cooling and heating modes instantly. The 230V power requirement ensures higher efficiency for larger areas.
A 3.7-star rating reflects positive reviews for performance and versatility in changing weather.
Pros
- Cooling and heating functions
- High BTU for large spaces
- Dehumidifier included
Cons
- 230V installation required
- Higher energy draw in heat mode
8. Best 230V Option: Frigidaire 230V 14,000 BTU Wall Air Conditioner
- Enjoy Better Air: This wall mounted air conditioner comes with a built-in air ionizer that reduces airborne particles to improve your air quality so you can breathe easier in your space
- Keep The Air Flowing: Switch the wall ac unit to fan mode to help air circulate throughout the room; choose between 3 speeds to find the best balance for your space
- Control from the Couch: Use the included remote control to adjust your wall air conditioner’s settings from afar without having to get up
This 14,000 BTU Frigidaire through-the-wall unit operates on 230V power and cools up to 700 sq. ft. It includes a dehumidifier and fan function for year-round comfort control.
Remote control operation and quiet, energy-efficient technology make it easy to maintain ideal temperatures in living rooms and open-plan areas.
Rated 4.1 stars, it wins praise for powerful performance in larger spaces.
Pros
- High BTU for large rooms
- Dehumidifier function
- Quiet operation
Cons
- 230V wiring needed
- Higher upfront cost
9. Best Timer Feature: Whirlpool 12,000 BTU Through the Wall Air Conditioner
- Exceptional Cooling: This powerful, 12,000 BTU wall mounted ac unit is best for spaces up to 550 square feet with an attached, 5.9-ft LCDI 3-prong plug that will fit any 115V electrical outlet
- A/C Wall Cooling Flexibility: With 8-way directional louvers, 3 fan speeds, 4 operation modes, and a temperature setting range of 62-86 degrees, you can customize your wall ac cooling to fit your specific needs
- Universal Fit Size: With dimensions of 20.3” D x 24.2” W x 14.5” H, this ac wall unit fits into sleeves 24.5”-27” wide and comes with a trim kit and rear grille to finish off the look
This Whirlpool 12,000 BTU 115V through-the-wall unit features a 24-hour timer, digital display, and remote control for customizable cooling of up to 550 sq. ft. The built-in dehumidifier helps you maintain perfect humidity levels.
Choose from multiple fan speeds, and set the timer to automatically start or stop the unit. Its white finish matches most interiors seamlessly.
Despite a 3.7-star rating, users appreciate the added timer function and clean design.
Pros
- 24-hour timer
- Digital display
- Remote control
Cons
- 115V only
- Average noise level
10. Best Heating and Cooling Combo: Frigidaire 14,000 BTU Wall AC with 10,600 BTU Heater
- Stay Cozy in Every Season: This wall air conditioner is equipped with a 10,600 BTU supplemental heater so you can keep your space at the perfect temperature no matter the weather
- Keep The Air Flowing: Switch the wall ac and heater combo unit to fan mode to help air circulate throughout the room; choose between 3 speeds to find the best balance for your space
- Control from the Couch: Use the included remote control to adjust your in wall air conditioner’s settings from afar without having to get up
This versatile Frigidaire unit combines 14,000 BTU cooling and 10,600 BTU heating in one 230V through-the-wall air conditioner. Perfect for year-round climate control in spaces up to 700 sq. ft.
Features include dehumidifier, fan mode, and remote control. Energy-efficient design keeps operating costs in check whether you’re heating or cooling.
Users praise its dual functionality, though its higher price reflects the added heater component.
Pros
- Cooling and heating in one
- High BTU ratings
- Dehumidifier included
Cons
- Higher price point
- 230V power needed
11. Best Balanced Performance: Frigidaire 230V 12,000 BTU Wall Air Conditioner
- Enjoy Better Air: This wall mounted air conditioner comes with a built-in air ionizer that reduces airborne particles to improve your air quality so you can breathe easier in your space
- Keep The Air Flowing: Switch the wall ac unit to fan mode to help air circulate throughout the room; choose between 3 speeds to find the best balance for your space
- Control from the Couch: Use the included remote control to adjust your wall air conditioner’s settings from afar without having to get up
This Frigidaire 12,000 BTU 230V wall unit cools up to 550 sq. ft. and offers a built-in dehumidifier and fan modes. Quiet, energy-efficient operation keeps your space comfortable with minimal noise.
Control is at your fingertips with the included remote. The white casing ensures a clean, modern look in any apartment or home.
A 4.2-star rating highlights user satisfaction with its consistent performance.
Pros
- Quiet and efficient
- Dehumidifier feature
- Remote control
Cons
- 230V wiring required
- No heating function
12. Best 230V Medium Room: Whirlpool 12,000 BTU 230V Through-the-Wall Air Conditioner
- Exceptional Cooling: This powerful, 12,000 BTU through the wall air conditioner is best for spaces up to 550-sq. ft. with an attached, 4.8-ft plug that will fit any 230V/20A electrical outlet
- Cooling Flexibility: With 8-way directional louvers, 3 fan speeds, 4 operation modes, and a temperature setting range of 62-86 degrees, you can customize your cooling to fit your specific needs
- Universal Fit Size: With dimensions of 20.3” D x 24.2” W x 14.5” H, this through the wall air conditioner fits into sleeves 24.5”-27” wide and comes with a trim kit and rear grille to finish off the look
This Whirlpool 12,000 BTU 230V through-the-wall unit cools spaces up to 550 sq. ft. and includes a dehumidifier and remote control. Designed for apartments and medium rooms, it offers reliable performance.
Multiple fan speeds and a white exterior suit most decor styles. The 3.4-star rating reflects its solid cooling power and straightforward installation.
Energy-efficient design helps manage running costs in demanding summer months.
Pros
- Dehumidifier function
- 230V efficiency
- Remote control
Cons
- 230V installation needed
- Average noise level
13. Best 230V Budget: Whirlpool 10,000 BTU Through the Wall Air Conditioner (230V)
- Exceptional Cooling: This powerful and efficient 10,000 BTU wall mounted ac unit is best for spaces up to 450 square feet with an attached, 4.8-ft plug that will fit any 230V/20A electrical outlet
- A/C Wall Cooling Flexibility: With 8-way directional louvers, 3 fan speeds, 4 operation modes, and a temperature setting range of 62-86 degrees, you can customize your cooling to fit your specific needs
- Universal Fit Size: With dimensions of 20.3” D x 24.2” W x 14.5” H, this ac wall unit fits into sleeves 24.5”-27” wide and comes with a trim kit and rear grille to finish off the look
Budget-friendly and efficient, this Whirlpool 10,000 BTU 230V through-the-wall unit cools up to 450 sq. ft. It includes a dehumidifier, remote control, digital display, and 24-hour timer.
Multiple fan speeds let you fine-tune airflow. Installation in standard wall sleeves is simple, and the white finish matches any room.
A 4.0-star rating highlights strong value and reliable performance for cost-conscious buyers.
Pros
- Affordable 230V option
- Timer and digital display
- Dehumidifier included
Cons
- Limited to 450 sq. ft.
- Higher noise than premium models
14. Best Dual Function: LG 11,800 BTU Through the Wall Air Conditioner and Wall Heater
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This LG 11,800 BTU through-the-wall air conditioner and wall heater combines cooling and heating in one unit, ideal for year-round comfort in rooms up to 550 sq. ft. The 230/208V power supply delivers efficient performance.
Features include multiple fan speeds, 4-way air deflection, and a convenient remote. The white finish fits seamlessly into any décor.
With a 4.6-star rating, users praise its versatility and powerful output for both winter and summer use.
Pros
- Combined AC and heater
- Multi-speed fan and airflow
- Efficient 230/208V operation
Cons
- Higher upfront cost
- Requires 230/208V outlet
15. Best Window Alternative: Midea Inverter Window Air Conditioner with Heat
- Multi-Season Comfort – This Midea 12000 BTU air conditioner is more versatile than standard AC units, offering powerful cooling and dehumidification in the summer and reliable supplemental heat in the fall. Best for large rooms up to 550 square feet. Note: Heat pump function will not operate if outside temperature is below 41°F.
- Easy To Use – This air conditioner and heat unit is well-equipped with a digital LED display, 5 Modes, 3 speed settings, 24-hr Timer, and ECO energy saver. The Swing button adjusts the louvers up/down to direct the airflow. Wireless enabled, control your comfort from your smartphone and your smartwatch using the Midea SmartHome app or your voice via Alexa and Google Assistant. All functions can be set via the control panel, remote control, and app or voice assistant.
- Save on Energy Without Sacrificing Comfort – This UL Listed, Energy Star certified air conditioner uses inverter technology to quickly cool your bedroom or apartment while providing up to 35% energy savings compared to the Energy Conservation Standard. With 12,000 BTUs, a CEER of 13.3, and 115V operation, this ac unit is loaded with features like auto shutoff, defrost control, and a washable front filter to maintain peak performance.
Though technically a window unit, the Midea Inverter combines cooling and 12,000 BTU heating, plus a dehumidifier, and smart controls for spaces up to 550 sq. ft. Energy Star certification ensures efficient operation.
Wi-Fi connectivity and remote control let you adjust temperatures from anywhere. Quiet inverter technology keeps noise levels low.
A 4.6-star rating highlights its reliability and smart-home integration.
Pros
- Inverter technology for quiet cooling
- Smart Wi-Fi control
- Cooling, heating, dehumidifier
Cons
- Window installation only
- Not a dedicated through-the-wall model
Buying Guide
BTU Rating & Room Size
Match the BTU capacity to your room’s square footage. Underpowered units struggle in large spaces, while oversized units cycle too quickly, wasting energy and reducing dehumidification.
Voltage Requirements
115V models plug into standard outlets, ideal for smaller rooms. For spaces above 550 sq. ft., consider 230V units for greater efficiency and power.
Additional Features
Look for built-in dehumidifiers, supplemental heaters, programmable timers, digital displays, and Wi-Fi connectivity to enhance comfort and control.
Energy Efficiency & Noise Levels
Check Energy Star ratings and user reviews on noise output. Efficient compressors and sound-dampening designs provide quieter operation and lower utility costs.
Frequently Asked Questions
How do I choose the right BTU size for my room?
Calculate your room’s square footage and match it to the unit’s BTU rating. Generally, allow 20 BTU per sq. ft. for accurate cooling.
Can I install a through-the-wall air conditioner myself?
Basic DIY skills can suffice if you have an existing sleeve. For new wall cutouts, professional installation ensures proper sealing and wiring.
What is the difference between 115V and 230V models?
115V units fit standard outlets and suit smaller rooms. 230V models deliver more power for larger spaces but require a dedicated circuit.
Do through-the-wall units come with installation sleeves?
Most units fit into existing sleeves. New installations often require a separate sleeve kit sold by the manufacturer.
Conclusion
With a variety of BTU capacities, voltage options, and feature sets, through-the-wall air conditioners provide customized comfort for any room. From budget-friendly Whirlpool models to versatile LG dual-function units and top-rated Frigidaire designs, there’s a perfect choice for your cooling—and even heating—needs. Use our buying guide to match key criteria to your space, and enjoy efficient, quiet operation all year.