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The Best Through-the-Wall Air Conditioners

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Our picks are based on Amazon bestseller rankings, verified customer ratings, and product availability. We update our recommendations regularly to ensure accuracy.

Selecting the right through-the-wall air conditioner is crucial for maintaining a comfortable and consistent temperature in any room. These units offer a permanent cooling solution that is often more efficient and aesthetically pleasing than window units. Investing in a model that fits your space and needs ensures long-term satisfaction and optimal performance.

SaleNo. 1
Whirlpool 12,000 BTU Through the Wall Air Conditioner, 115V, Cools up to 550 Sq. Ft for Living Room, Bedroom...
  • 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
  • Convenient Functions: The Eco and Sleep functions save you money throughout the day and night while keeping you cool while the programmable 24-hour timer allows you to cool on your schedule
  • Easy Remove Filter: The wall air conditioner features a quick-access filter for easy cleaning so you can simply pull the front handle on the wall unit ac, wipe the filter clean, and push back into the wall unit air conditioner
SaleNo. 2
LG 14,000 BTU Through the Wall Air Conditioner, 230/208V, Cools 700 Sq.Ft. for Bedroom, Living Room...
  • Multiple Fan Speeds: 3 cooling and fan speeds with Auto Cool allow you to customize your cooling; Effortlessly adjust the wall unit air flow to suit your needs
  • Maximum Usability: The wall mounted ac unit includes an easy to use digital control panel and remote control; 4-way air deflection gives you ultimate flexibility; Filter light reminder, trim kit, and a removable, washable filter are included for your...
  • Auto Restart: After a power failure, Auto Restart will automatically turn the ac wall unit back on when power is restored
  • Functional Wall Air Conditioner: The thermostat can be set between 60°F and 86°F (16°C and 30°C); This wall unit ac requires a special 230/208V LCDI Plug (NEMA 6 - 20); Create a cooling schedule to save on energy expenditures s with the 24 hour on/off...
  • Cools Rooms up to 700 Square Feet: LT1430CNR is ideal for cooling medium rooms (30' X 25'); With the 700 square feet cooling coverage, keep your kitchen, living room, bedroom, or office comfortably cool
SaleNo. 3
LG 10,000 BTU Through the Wall Air Conditioner, 115V, Cools up to 440 Sq. Ft. for Bedroom, Living Room...
  • 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...
  • Easy Wall Air Conditioner Installation: A plastic, snap-together trim kit finishes the indoor installation, while a plastic mesh grille protects the unit
  • Wall Unit Air Conditioner Features: A washable, reusable filter, insulation foam, and a remote control are included
No. 4
Whirlpool 10,000 BTU Through the Wall Air Conditioner, 115V, Cools up to 450 Sq. Ft. for Living Room, Bedroom...
  • 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
  • Convenient Functions: The Eco and Sleep functions save you money throughout the day and night while keeping you cool while the programmable 24-hour timer allows you to cool on your schedule
  • Easy Remove Filter: The wall air conditioner features a quick-access filter for easy cleaning so you can simply pull the front handle on the wall unit ac, wipe the filter clean, and push back into the wall unit air conditioner
SaleNo. 5
TCL H10T9XH 10,000 BTU Smart Through-The-Wall Air Conditioner, AC Heater Unit with Fan & Dehumidifier, 450 Sq...
  • Set The Perfect Temperature: This wall ac unit is equipped with a 10,000 BTU cooling capacity and a 9,800 BTU heater that lets you maintain ideal temperatures in rooms up to 450 sq ft; cool off or warm up your space and stay comfortable all year long
  • Built-in Dehumidifier: Set the wall unit to Dry Mode to pull moisture from the air and improve your space’s air quality; control and reduce humidity to make your space more comfortable and help prevent odors
  • Works with Smart Home Devices: This wall ac works with smart home devices like Amazon Alexa and Google Assistant so you can control it with simple voice commands; change and adjust your unit’s settings without needing to get up
  • Compatible Sleeve Dimensions: This wall unit fits wall sleeves sized 26”x20”x15.57”; Wall Sleeve Not Included
  • Actual coverage may vary based on room size and configuration (ceiling height, number of windows, and other varying conditions) and environmental factors such as number of occupants, home insulation, etc
SaleNo. 6
Whirlpool 14,000 BTU 230V Through-the-Wall Air Conditioner with Supplemental Heat, Dehumidifier and Remote...
  • 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...
  • 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
  • Convenient Functions: The Eco and Sleep functions save you money throughout the day and night while keeping you cool while the programmable 24-hour timer allows you to cool on your schedule
  • Easy Remove Filter: The unit features a quick-access filter for easy cleaning so you can simply pull it out, wipe the filter clean, and push back into the unit
SaleNo. 7
Keystone 8,000 BTU Wall Mounted Air Conditioner with Supplemental Heat and Dehumidifier Function, 115V, Wall...
  • Reliable Air Conditioner with Supplemental Heating: Our powerful 8,000 BTU cooling capacity / 4,200 BTU supplemental heating capacity wall heater can efficiently provide comfort all year long for any small to medium sized room in your home up to...
  • Air Conditioner and Heater: Enjoy cooling, supplemental heating, dehumidification, and fan circulation; Supplemental Heating mode is meant to be operated when temperatures outside are between 23 and 76 degrees; Mode is supplemental and NOT meant as...
  • Space Saving Design: Keep your window view and floor space with this wall-mounted heating ac; Easy installation with interior trim kit
  • Smart Remote Control: The remote takes the temperature of the room you are in, displays it on the LCD screen and sends a signal to your air conditioning and heater unit every 3 minutes for accurate cooling
  • Powerful Cooling on a Budget: Our heat and ac unit will give your electric bill a break by using the 'Energy Saver' or Sleep' mode
SaleNo. 8
Frigidaire 115V 12000 BTU Wall Air Conditioner with Dehumidifier, Fan & Remote Control, Quiet Energy Efficient...
  • 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
  • Additional Features: Align your cooling with your daily schedule with the wall ac’s programmable 24-hour timer, and use sleep mode to optimize temperature and efficiency during the wee hours
  • Easy Maintenance: When the included air filter gets full, just remove it, wash it off, dry it, then pop it back in for easy maintenance
SaleNo. 9
LG 11,800 BTU Through the Wall Air Conditioner, 115V, Cools up to 530 Sq. Ft. for Bedroom, Living Room...
  • 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
  • Wall Unit Modes: 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 moisture from your space; Cool mode keeps you comfortable on warm days with cold air
  • Accessories Included: A trim kit finishes the indoor installation, while a plastic mesh grille protects the outdoor; A washable, reusable filter, insulation foam, and a remote are also included. Wall Cutout Dimensions: 25.88 W x 16.72 L x 15.53 H

Last update on 2026-07-18 / Affiliate links / Images from Amazon Product Advertising API

How to Choose the Best Through-the-Wall Air Conditioners

Understanding Capacity (BTUs)

The cooling power of an air conditioner is measured in British Thermal Units (BTUs). The appropriate BTU rating depends on the size of the room you need to cool. For smaller rooms (100-150 sq ft), 5,000-6,000 BTUs may suffice. Larger spaces (up to 550 sq ft) might require 12,000 BTUs or more. Overestimating can lead to excessive cycling and humidity issues, while underestimating will result in insufficient cooling.

Installation Considerations

Through-the-wall units require a dedicated sleeve installed in an exterior wall. This sleeve provides a secure housing for the unit and ensures a proper seal against the elements. Professional installation is often recommended to guarantee correct fitment, electrical connections, and structural integrity. Ensure the chosen location allows for proper airflow and drainage.

Energy Efficiency and Features

Look for units with high Energy Efficiency Ratios (EER) or Seasonal Energy Efficiency Ratios (SEER), indicated by the Energy Star label. Higher ratings mean more efficient operation and lower electricity bills. Additional features to consider include remote controls, programmable timers, multiple fan speeds, sleep modes, and air filtration systems. Some models also offer heating capabilities for year-round comfort.

Maintenance and Durability

Regular maintenance is key to prolonging the life of your unit and ensuring its optimal performance. This typically involves cleaning or replacing air filters every few months, and ensuring the exterior vents are free from obstructions. Look for durable construction and reliable brands known for their longevity and customer support.

Frequently Asked Questions

What is the difference between a through-the-wall and a window air conditioner?
Through-the-wall units are permanently installed into a wall sleeve, offering a more secure and often quieter operation. Window units are designed to fit in a window frame and are generally easier to install and remove.
How do I determine the correct BTU for my room?
Measure the square footage of the room you intend to cool. Use online BTU calculators or consult product specifications, which often provide guidelines based on room size to ensure adequate cooling without overworking the unit.
Do through-the-wall air conditioners require professional installation?
While some DIYers may manage installation, professional installation is highly recommended. This ensures proper structural support, secure mounting, correct electrical wiring, and an effective seal against outdoor elements.
What maintenance is required for these units?
Regular cleaning of the air filter is the most crucial maintenance task, typically done monthly or bi-monthly. Keeping the exterior vents clear of debris and ensuring proper drainage also contributes to the unit's longevity and efficiency.
Can through-the-wall air conditioners provide heat as well?
Yes, many through-the-wall models are designed as combination heating and cooling units. These 'reverse cycle' or 'heat pump' models can provide warmth during colder months, offering year-round climate control.