When searching for the best through the wall air conditioner, you’re looking for a unit that combines efficiency, quiet operation, and reliable cooling tailored to your space. The Frigidaire 12,000 BTU model stands out as the best overall choice, offering a balance of performance and affordability. For those needing more cooling power, the LG 14,000 BTU unit provides larger coverage, while the Olmo Smart AC caters to tech-savvy buyers with smart home integration. Each option comes with tradeoffs—higher capacity units tend to cost more and may require professional installation, while smaller or simpler models might lack advanced features. Continue reading for a detailed breakdown of each product and what makes them suitable for different needs.
Key Takeaways
- The top-ranked units excel in balancing cooling capacity and energy efficiency, making them suitable for medium to large rooms.
- Smart features like Wi-Fi control and voice assistant compatibility are becoming standard in higher-end models, enhancing usability.
- Units with supplemental heating are better for year-round comfort, but they often come at a higher price point.
- Installation complexity varies; models with wall sleeves included simplify the setup process.
- Price range reflects capacity, features, and build quality—spend more if you need durability and advanced controls.
More Details on Our Top Picks
Frigidaire 12,000 BTU Through-the-wall Air Conditioner and Dehumidifier, 115V, Cools up to 550 Sq. Ft. with Remote Control
This Frigidaire unit offers reliable cooling for spaces up to 550 sq. ft., with a versatile 3-in-1 design combining cooling, dehumidifying, and fan modes. Compared to the LG 14,000 BTU model, it handles smaller rooms more efficiently without the higher electrical requirements, making it a practical choice for many homes. Its washable filter and programmable timer add convenience, though the installation process might demand professional help, and its energy efficiency rating isn’t specified. Tradeoffs involve installation complexity and limited power options. This makes sense for buyers wanting a straightforward, effective cooling solution for medium-sized rooms at a reasonable price.
Pros:- Cools effectively up to 550 sq. ft.
- Includes dehumidifier and fan functions
- Remote control and washable filter enhance usability
Cons:- Installation may require professional setup
- Lacks an energy efficiency rating for long-term savings
Best for: Homeowners needing an easy-to-use, budget-friendly unit for moderate room sizes
Not ideal for: Large spaces over 700 sq. ft. or buyers seeking maximum energy efficiency without professional installation
- Cooling Power:12,000 BTU
- Voltage:115V
- Room Size:Up to 550 sq. ft.
- Dehumidification:Up to 3.3 pints/hr
- Fan Speeds:3
- Filter:Washable dust filter
Bottom line: This unit is a smart pick for those seeking reliable, all-in-one cooling for medium rooms without high upfront costs.
LG 14,000 BTU Through the Wall Air Conditioner, 230/208V, Cools 700 Sq.Ft., Remote Control
This LG model provides robust cooling for larger rooms up to 700 sq. ft., with multiple fan speeds and a digital remote for precise control. Unlike the smaller Frigidaire, it requires a 230/208V power supply, which limits its installation options but offers more cooling capacity. The auto restart and timer functions add convenience, but the electrical requirement might necessitate professional wiring. Noise levels could be higher at maximum speeds, which is a consideration for quiet environments. Tradeoffs include higher installation complexity and electrical costs for maximum performance. It’s ideal for buyers who want a high-capacity, feature-rich unit and have the electrical infrastructure to support it.
Pros:- Effective cooling for larger spaces up to 700 sq. ft.
- Multiple fan speeds and auto mode for tailored comfort
- Includes remote control and washable filter
Cons:- Requires a special 230/208V outlet, complicating installation
- Potentially noisy at higher fan speeds
Best for: Homeowners with larger rooms up to 700 sq. ft. who can handle or plan for professional electrical installation
Not ideal for: Those with standard 115V outlets or limited electrical capacity seeking simple setup
- Cooling Capacity:14,000 BTU
- Voltage:230/208V
- Coverage Area:700 sq.ft.
- Control Type:Digital with remote
- Air Deflection:4-way
- Filter:Removable, washable
Bottom line: This model suits larger spaces where power supply and installation are manageable, providing high performance with advanced features.
Frigidaire 12,000 BTU Wall Air Conditioner with Dehumidifier, Fan & Remote Control
This Frigidaire unit combines cooling with an air ionizer, making it a strong choice for those prioritizing air quality along with temperature control. Suitable for rooms up to 550 sq. ft., it offers multiple fan speeds, remote operation, and a programmable timer, similar to the B0DYG3YVKP. Compared with units lacking air quality features, this one adds a layer of health benefits, though it may be noisier at higher speeds and requires periodic filter maintenance. Its energy efficiency is enhanced by sleep mode, but installation through the wall remains a consideration. Tradeoffs involve potential noise and ongoing filter care. It’s ideal for users who want clean air as part of their comfort package in medium-sized spaces.
Pros:- Includes air ionizer to improve indoor air quality
- Effective cooling for rooms up to 550 sq. ft.
- Remote control and programmable timer
Cons:- May be noisy at higher fan speeds
- Requires periodic filter cleaning
Best for: Those prioritizing air quality and comfortable operation in medium-sized rooms
Not ideal for: Buyers seeking the quietest operation or those with minimal room for wall installation
- Voltage:115V
- Cooling Capacity:12,000 BTU
- Coverage Area:Up to 550 sq. ft.
- Features:Dehumidifier, Fan Mode, Remote, Timer
- Air Quality:Built-in ionizer
- Maintenance:Removable, washable air filter
Bottom line: This unit is well-suited for users who want both effective cooling and air purification in their living spaces.
LG 11,800 BTU Through the Wall Air Conditioner with Remote, 115V, White
This LG model offers efficient cooling for rooms up to about 530 sq. ft., emphasizing energy savings with its R-32 refrigerant and multiple modes like dry and energy saver. Compared to the higher-capacity 14,000 BTU LG, this unit is better suited for smaller spaces or those prioritizing environmental impact and lower energy bills. Its three fan speeds and remote control provide flexible comfort settings, though its dimensions and installation need careful planning, especially since it’s designed for wall mounting only. The limited coverage area means it’s not ideal for larger rooms. Tradeoffs involve lower capacity and more specific installation requirements. It’s perfect for eco-conscious buyers with space constraints who want a reliable, energy-efficient cooling unit.
Pros:- Eco-friendly R-32 refrigerant reduces environmental impact
- Multiple modes including dry and energy saver
- Remote control and included installation accessories
Cons:- Limited to 530 sq. ft. coverage, not suitable for larger rooms
- Requires wall installation, not portable or window venting
Best for: Eco-minded homeowners with rooms around 530 sq. ft. seeking energy-efficient cooling
Not ideal for: Large or open-plan spaces over 700 sq. ft. or buyers preferring easy, window-style units
- BTU:11,800
- Voltage:115V
- Cooling Area:up to 530 sq. ft.
- Refrigerant:R-32
- Modes:Cool, Dry, Energy Saver
- Fan Speeds:3
Bottom line: This unit is ideal for eco-conscious users with moderate-sized rooms who want energy savings and a smaller footprint.
Whirlpool 12,000 BTU Through-the-Wall Air Conditioner with Supplemental Heat, Dehumidifier, Remote, for Medium Rooms up to 550 sq ft
This Whirlpool model stands out for offering a well-rounded balance of cooling and heating power, making it a strong choice for those who want year-round comfort in medium-sized rooms. Compared with the TCL smart model, it provides both cooling and supplemental heating, which is ideal for cooler nights, but it requires a dedicated 230V outlet, unlike the more straightforward 115V options. Its adjustable louvers and energy-saving modes enhance usability, while the removable filter simplifies maintenance. However, its installation demands a compatible wall sleeve and more electrical setup, which might be a barrier for DIY installation. For buyers seeking a reliable, all-season solution for spaces up to 550 sq ft, this model delivers impressive performance, but it’s less ideal for those with limited electrical capacity or who want a simpler plug-and-play unit.
Pros:- Powerful cooling and heating for up to 550 sq ft
- Energy-efficient modes like Eco and Sleep
- Removable filter for easy cleaning
- Includes supplemental heating for cooler nights
Cons:- Requires a 230V/20A outlet, not compatible with standard household outlets
- Installation may need a specific wall sleeve
Best for: Homeowners needing both cooling and heating in medium-sized rooms, with emphasis on energy efficiency and ease of maintenance
Not ideal for: Renters or DIYers lacking a 230V outlet or seeking a plug-and-play installation without additional electrical work
- Cooling Capacity:12,000/11,600 BTU
- Heating Capacity:10,600/8,600 BTU
- Dehumidification:1.6 pints per hour
- Room Size:Up to 550 sq ft
- Electrical Requirements:230V/20A
- Dimensions:20.3″ D x 24.2″ W x 14.5″ H
Bottom line: This pick suits those who want a versatile, all-in-one climate control solution for medium rooms willing to handle more complex installation.
Olmo 8,300 BTU Through-the-Wall Air Conditioner with Remote Control and Smart Kit
This Olmo unit makes the most sense for users who prioritize smart home integration and space-saving design. Its 8,300 BTU capacity is well-suited to smaller rooms around 350 sq ft, making it a good alternative to the TCL model, which also offers smart features but with less cooling power. The inclusion of a remote control and a smart kit adds convenience, especially for tech-savvy buyers. However, it doesn’t include a wall sleeve, requiring an additional purchase, and it’s purely a cooling unit without heating options—limiting its year-round usability. Compared to the Whirlpool, it’s less powerful but easier to install and operate for those who want smart features and don’t require heating. This choice is best for those with smaller rooms and an existing wall sleeve or professional installation support.
Pros:- Smart connectivity with Alexa and Google Assistant
- Compact design fits various small spaces
- Remote control included
- Uses eco-friendly R-32 refrigerant
Cons:- Wall sleeve not included, requiring additional purchase
- Cooling only, no heating functionality
- Installation might require professional help
Best for: Tech-savvy residents seeking smart control in smaller rooms who prefer a straightforward, cooling-only unit
Not ideal for: Larger spaces over 350 sq ft or buyers needing heating capabilities or a included wall sleeve
- Cooling Capacity:8,300 BTU
- Voltage:115V
- Refrigerant:R-32
- Noise Level:49.5 Decibels
- Dimensions:20.28″D x 24.21″W x 14.53″H
- Maximum Window Width:24.21 inches
Bottom line: Ideal for small rooms where smart features and ease of remote control matter more than high cooling capacity.
Through the Wall Air Conditioner with Supplemental Heating and Remote Control, 14,000 BTU, 208/230V, Wall Sleeve Included
This 14,000 BTU unit offers robust cooling for spaces up to 700 sq ft, making it suitable for larger rooms or open-plan areas. Its included wall sleeve simplifies installation, and the unit’s 10,600 BTU supplemental heating adds year-round functionality. Compared with the Whirlpool, it provides higher cooling capacity but also produces more noise at nearly 70 decibels, which could be disruptive in quiet environments. Its multiple fan speeds and dehumidification enhance overall comfort, but it’s primarily designed as a supplemental heater rather than a primary heating source in winter. The lightweight listing may be inaccurate, but the unit’s impressive cooling power makes it a solid choice for those needing to cool larger spaces with flexible temperature options.
Pros:- High cooling capacity for large areas
- Includes wall sleeve for easy installation
- Provides supplemental heating for year-round use
- Multiple fan speeds and dehumidification
Cons:- Relatively high noise level at nearly 70 decibels
- Designed mainly as a supplement, not primary heat source
Best for: Homeowners with large rooms up to 700 sq ft seeking effective cooling and heating in one unit
Not ideal for: Quiet-focused spaces or users who prefer a lower-noise operation; those expecting primary heating in harsh winters
- Cooling Power:14000 BTU
- Heating Power:10600 BTU
- Voltage:208/230V
- Wattage:1817 watts
- Dimensions:20.25″D x 24.25″W x 14.5″H
- Noise Level:69.9 Decibels
Bottom line: Best suited for large living spaces where powerful cooling and additional heating are prioritized over noise levels.
TCL H8T9E1-A 8,000 BTU Smart Through-The-Wall Air Conditioner, Fan & Dehumidifier, 350 Sq. Ft, Remote Control, Compatible with Alexa/Google Assistant
This TCL model makes a compelling case for those who want smart home integration combined with reliable cooling in spaces around 350 sq ft. Its 8,000 BTU capacity matches the Olmo, but it offers added smart features with voice control compatibility, unlike the simpler remote control of the Olmo. It’s perfect for bedrooms or offices where space is limited, and smart automation adds convenience. The wall sleeve is not included, which could add to the upfront cost, and the unit lacks heating, limiting year-round use. Compared with the Whirlpool, it has less cooling power but excels in smart features and ease of use for smaller rooms. It’s a good pick for tech-forward users who don’t need heating or maximum cooling capacity.
Pros:- Smart home compatibility with Alexa and Google Assistant
- Remote control included for easy operation
- Suitable for small to medium rooms
- Dehumidifier function enhances air quality
Cons:- Wall sleeve not included, additional cost
- Cooling only, no heating
- Limited to smaller spaces
Best for: Small room dwellers or office occupants seeking smart control and reliable cooling without heating needs
Not ideal for: Large rooms over 350 sq ft or users seeking heating functionality in one unit
- BTU:8,000
- Coverage Area:350 sq ft
- Functions:Cooling, Fan, Dehumidifier
- Smart Compatibility:Alexa, Google Assistant
- Wall Sleeve Dimensions:26″ x 20″ x 15.57″
Bottom line: Ideal for small, tech-savvy households seeking smart control and effective cooling without heating features.
OLMO 12,000 BTU 115V Through-the-Wall Air Conditioner with Remote and Wireless Smart Kit
This OLMO model stands out for its combination of smart features and environmentally friendly refrigerant, making it an excellent choice for those who want remote control via WiFi and an eco-conscious cooling solution. Compared with the Black+Decker, which offers more cooling power but lacks smart connectivity, this unit provides more convenience for tech-savvy users. However, the need to purchase a wall sleeve separately adds a layer of complexity and cost. Its 55.3-decibel noise level is reasonable, but not the quietest among competitors. This pick is ideal for users who value remote operation and energy efficiency in moderate-sized spaces.
Pros:- WiFi-enabled for remote control via smartphone
- Includes remote control for convenience
- Uses environmentally friendly R-32 refrigerant
- Compact design fits various spaces
Cons:- Wall sleeve not included and must be purchased separately
- Cooling only, no heating function
- Electrical receptacle compatibility verification needed
Best for: Homeowners seeking smart, remote-controlled cooling in medium-sized rooms
Not ideal for: Users who prefer a built-in wall sleeve or need heating functionality
- Cooling Power:12000 BTU/h
- Voltage:115V
- Refrigerant:R-32
- Noise Level:55.3 Decibels
- WiFi Enabled:Yes
- Efficiency SEER:14
Bottom line: Best suited for users who want smart, efficient cooling with remote access in moderate spaces.
LG 10,000 BTU Through the Wall Air Conditioner, 115V, White
This LG model offers a practical cooling solution for spaces up to 440 square feet, with multiple modes like energy saver and dry that help optimize comfort and efficiency. Compared to the Keystone, which provides dehumidification and a remote, LG’s unit excels in ease of use with a simple snap-together trim kit and washable filter, making installation and maintenance straightforward. However, it’s not suitable for window installation, limiting placement options. This unit is ideal for users who want flexible cooling modes and easy setup for medium-sized rooms, especially if they prefer a brand known for reliability.
Pros:- Energy-efficient with R-32 refrigerant
- Multiple cooling modes and three speeds
- Easy installation with included trim kit
- Remote control included
Cons:- Limited to through-the-wall installation; no window option
- May require professional setup for best results
- No heating function
Best for: Homeowners or renters needing versatile, easy-to-install cooling in medium rooms
Not ideal for: People seeking a combination unit with dehumidification or heating features
- BTU:10,000
- Voltage:115V
- Cooling Capacity:up to 440 sq. ft.
- Refrigerant:R-32
- Modes:Turbo, Energy Saver, Dry
- Air Deflection:4-way
Bottom line: Ideal for users who want flexible, energy-efficient cooling with simple installation in medium-sized spaces.
Keystone 10,000 BTU Through-the Wall Air Conditioner and Dehumidifier, 115V
This Keystone unit combines cooling with dehumidification, making it suitable for humid environments or spaces that need moisture control. Its capacity of 10,000 BTU comfortably cools rooms up to 450 sq.ft., comparable to LG’s model but with added dehumidification. The programmable timer and smart remote enhance usability, but the need for a universal interior trim kit and potential higher noise levels in certain modes could be drawbacks. Compared with the LG, it offers dehumidification and a slightly larger room coverage, but installation may be more complex. This makes it a good fit for users who want a dual-function unit for small to medium rooms.
Pros:- Efficient cooling for rooms up to 450 sq.ft.
- Includes dehumidification feature
- Multiple cooling modes and fan speeds
- Smart remote control and programmable timer
Cons:- Limited to rooms up to 450 sq.ft.
- Requires installation with a universal interior trim kit
- May have higher noise levels
Best for: Residents in humid climates or those needing dehumidification alongside cooling
Not ideal for: Users who prefer simpler units without dehumidification or larger room coverage
- BTU:10,000
- Voltage:115V
- Room Size:up to 450 sq.ft.
- Dehumidification:2.3 pints/hour
- Cooling Modes:3
- Remote Control:Yes
Bottom line: A solid choice for small to medium spaces where moisture removal is also needed.
BLACK+DECKER 18000 BTU Window or Through-The-Wall Air Conditioner, White
This BLACK+DECKER unit offers powerful cooling for larger areas, covering up to 1,000 sq.ft., making it ideal for big rooms, offices, or apartments that need substantial cooling capacity. It provides multiple speeds and fan options, with the convenience of remote control, and versatile installation options for windows or walls. Compared with the smaller BTU units like the LG or Keystone, this model handles larger spaces but involves more complex installation, often requiring professional help. It is best suited for those seeking maximum cooling power in sizable environments and willing to handle a more involved setup process.
Pros:- Effective cooling for spaces up to 1000 sq ft
- Multiple speeds and fan options
- Remote control included
- Versatile installation for windows or walls
Cons:- Installation may require professional help
- Through-the-wall setup can be complex
- Bulkier than smaller units
Best for: Large space dwellers or commercial spaces needing robust cooling in big rooms
Not ideal for: Small rooms or users seeking simple, easy-to-install units
- BTU:18000
- Cooling Area:up to 1000 sq ft
- Color:White
- Installation:Window or Through-The-Wall
- Remote Control:Yes
- Additional Features:Sleep mode, energy saver, 24-hour timer
Bottom line: Designed for large spaces where maximum cooling power outweighs installation complexity.
How We Picked
We evaluated these through-the-wall air conditioners based on several key criteria: cooling performance relative to room size, energy efficiency ratings, ease of installation, build quality, noise levels, and smart feature availability. Cost was also a factor, ensuring options suited various budgets while maintaining value. Units with reliable remote controls and intuitive interfaces earned higher marks, as did those with effective dehumidification and heating options. Our ranking emphasizes units that deliver consistent performance, ease of use, and durability, helping buyers find the best fit for their space and needs.Factors to Consider When Choosing Best Through The Wall Air Conditioner
Choosing the right through-the-wall air conditioner involves more than just capacity. The following factors can help you make a well-informed decision and avoid common pitfalls, ensuring your investment delivers the comfort you need without unnecessary expense or complication.Cooling Capacity and Room Size
Matching the unit’s BTU rating to your room size is essential for effective cooling. An undersized unit will struggle to cool the space efficiently, leading to higher energy bills and frustration. Conversely, an oversized unit may cycle on and off too frequently, wasting energy and causing uneven temperatures. Always measure your room accurately and choose a model with a BTU rating appropriate for that size, typically listed in the product specs.
Energy Efficiency and Operating Costs
Look for units with high Energy Efficiency Ratio (EER) ratings, which can significantly reduce monthly electricity bills. Many newer models feature inverter technology, allowing them to adjust compressor speed and consume less power when full capacity isn’t needed. While these units may cost more upfront, the savings over time often justify the investment. Remember to check for ENERGY STAR certification as an indicator of efficiency and environmentally friendly operation.
Installation and Wall Sleeve Compatibility
Proper installation is key to optimal performance and minimizing issues like drafts or leaks. Units that come with a wall sleeve included simplify the process and ensure a snug fit, reducing installation costs. Consider whether your wall structure can support the weight of the unit, and whether professional installation is needed. Also, verify the dimensions of the unit and sleeve to match your wall cavity for a seamless fit.
Additional Features and Controls
Features like remote control, programmable timers, and smart home compatibility add layers of convenience. Dehumidification functions improve comfort, especially in humid climates, while units with supplemental heat can provide year-round usability. Be cautious about overly complex controls if you prefer simplicity, but recognize that advanced features often enhance daily usability and long-term satisfaction.
Cost and Long-Term Value
While budget models may seem attractive initially, they can lack durability or efficient features, leading to higher operating costs or replacement expenses. Investing in a slightly more expensive, well-reviewed model can pay off through lower energy bills and fewer maintenance issues. Balance your budget with the features most important to your comfort and ensure the unit’s lifespan aligns with your long-term needs.
Frequently Asked Questions
Can I install a through-the-wall air conditioner myself?
Many through-the-wall units are designed for relatively straightforward installation, especially those with wall sleeves included. However, proper placement, wall support, and electrical connections are crucial for safety and performance. If you’re comfortable with basic DIY tasks and have the right tools, some models can be installed yourself, but consulting a professional is recommended to ensure a secure, code-compliant setup, especially for units with higher BTU ratings or complex wiring.
Are through-the-wall units noisy compared to window units?
Through-the-wall air conditioners tend to operate more quietly than window units because they’re designed for permanent installation and often feature better insulation around the casing. Noise levels vary by model, with many modern units offering quieter operation thanks to improved compressor and fan designs. If noise is a primary concern, look for units with decibel ratings below 55 dB, and consider models with noise reduction features or inverter technology.
Do through-the-wall air conditioners come with heating options?
Some models include supplemental heating features, making them suitable for year-round use in moderate climates. These units typically have a heat pump or electric heating element integrated into the system. Keep in mind that units with heating tend to be more expensive and may consume more power, so evaluate your climate needs and energy budget before choosing a model with this feature.
What maintenance is required for these units?
Regular maintenance includes cleaning or replacing filters, inspecting the drainage system for clogs, and checking for any signs of wear or damage. Many units have washable filters, which simplify upkeep and help maintain efficiency. Annual professional inspections can also ensure the unit continues to operate optimally, especially if it’s used year-round. Proper maintenance extends the lifespan and keeps energy consumption low.
Is it better to choose a unit with smart features?
Smart features like Wi-Fi control, voice assistant compatibility, and programmable timers add convenience and flexibility, especially for busy households or those using smart home systems. These features allow remote operation, scheduling, and integration with other devices, enhancing daily comfort. However, they typically come at a higher cost and may require updates or troubleshooting. Consider how much value these features add to your lifestyle before investing.
Conclusion
For most buyers, the Frigidaire 12,000 BTU model offers a reliable balance of power, efficiency, and affordability, making it the best overall choice. Those with larger spaces or a need for smart home integration will find the LG 14,000 BTU unit or the Olmo Smart AC to be better suited. Budget-conscious shoppers can opt for smaller or less feature-rich models, while homeowners seeking year-round comfort should prioritize units with supplemental heating. Ultimately, your choice depends on your room size, preferred features, and budget—use this guide to find the best fit for your needs.
