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Looking for a reliable way to cool your space without sacrificing window access or dealing with bulky portable units? A through the wall air conditioner might be your perfect solution. These built-in cooling systems are designed to fit securely into a wall sleeve, offering efficient, permanent cooling ideal for apartments, hotels, offices, or homes where window units aren’t practical. Unlike window ACs, they stay in place year-round, provide better insulation, and reduce outdoor noise—making them a smart long-term investment for consistent comfort.
Quick Product Comparison
Our Top 5 Through The Wall Air Conditioner Reviews – Expert Tested & Recommended
1. LG 14,000 BTU Through the Wall Air Conditioner for 700 Sq. Ft. Rooms with Remote
This powerful LG through the wall air conditioner delivers strong cooling performance for medium to large rooms up to 700 square feet. With its sleek design and user-friendly controls, it’s built for everyday reliability and consistent comfort during hot summer months.
Key Features That Stand Out
✓ 14,000 BTU cooling capacity ideal for large spaces
✓ 3 cooling and fan speeds with Auto Cool technology
✓ Includes digital control panel and full-function remote
✓ Auto Restart feature resumes operation after power outages
✓ 4-way air deflection for even airflow distribution
Why We Recommend It
We picked this as our Best Choice because it balances power, ease of use, and durability. The Auto Restart and multiple fan settings make it dependable and customizable, while the remote adds convenience you’ll actually use.
Best For
Homeowners or renters with existing wall sleeves who need strong, reliable cooling for large bedrooms, living rooms, or studio apartments.
Pros and Cons
Pros:
- Excellent cooling power for its size
- Quiet operation compared to older models
- Easy-to-use remote and control panel
- Energy-efficient performance
Cons:
- Requires professional installation for new wall sleeves
- Some users report overheating in extreme humidity
Customer Reviews
Customer Review: “Very happy with this purchase. Placed it in the apartment above our garage in the existing opening after removing the old unit. It worked for fit and the cord is more than long enough to reach the plug. The fellows who did the install did a really nice job. Keeps the room very cool and comfortable.”
Customer Review: “I had the same experience as Matt Punk. Sadly, I bought the unit over Memorial Day and didn’t use it for weeks because it wasn’t warm enough so I didn’t notice the design flaw until it got into the 90’s with high humidity. Now my return window has expired. It overheats and shuts down with the error.”
2. BLACK+DECKER 18,000 BTU Through the Wall Air Conditioner with Remote and 3 Cooling Speeds
For those who need serious cooling power, this BLACK+DECKER model offers 18,000 BTUs—enough to cool spaces up to 1,000 square feet. It’s a great fit for large open-concept areas, garages, or commercial spaces where maximum airflow is essential.
Key Features That Stand Out
✓ Massive 18,000 BTU output for large rooms
✓ Four operating modes: Auto, Low, Medium, High
✓ Full-function remote with sleep mode
✓ Designed for through-the-wall installation
✓ Durable build with reliable compressor performance
Why We Recommend It
We named this our Editor’s Choice because it delivers exceptional cooling strength without sacrificing usability. The remote is intuitive, and the multiple speed settings let you fine-tune comfort based on room size and outdoor temps.
Best For
Large homes, converted garages, commercial offices, or any space over 700 sq. ft. that needs powerful, consistent cooling.
Pros and Cons
Pros:
- One of the most powerful residential wall units available
- Remote control works from across the room
- Quick cooling even in extreme heat
- Solid construction and brand reliability
Cons:
- Higher energy consumption due to high BTU rating
- Some units arrive with minor cosmetic dents
Customer Reviews
Customer Review: “Excellent price and works flawlessly. Multiple settings and remote. Cools entire room quickly to set temp. Highly recommend.”
Customer Review: “5 stars for how well this works, it is keeping the laundry room/kitchen area cool like should be happening. Because some complained of dents in the AC I will say this….our unit has a dent in the grating on the side however because there is no damage to the box this damage occurred at the factory thus…”
3. LG 7,600 BTU Window Air Conditioner with Heat for 330 Sq. Ft. Rooms and Remote
Don’t let the “window” label fool you—this versatile LG unit can also be adapted for through-the-wall use with the right sleeve. It offers both cooling and heating, making it a year-round climate solution for smaller spaces.
Key Features That Stand Out
✓ Dual function: AC and heater in one unit
✓ 7,600 BTUs ideal for rooms up to 330 sq. ft.
✓ 2 cooling, heating, and fan speeds
✓ Operates as quietly as 52dB on low setting
✓ Includes remote and easy-mount installation kit
Why We Recommend It
We chose this as our Best Budget pick because it offers incredible value—especially if you need both heating and cooling. It’s energy-efficient, quiet, and perfect for small apartments or seasonal cabins.
Best For
Small bedrooms, studios, sunrooms, or anyone needing an affordable dual-purpose climate control system.
Pros and Cons
Pros:
- Affordable price point with heating included
- Very quiet operation—great for bedrooms
- Easy DIY installation
- Reliable LG brand quality
Cons:
- Not as powerful for larger spaces
- Requires adapter for permanent wall installation
Customer Reviews
Customer Review: “The media could not be loaded. No assembly required btw. This is a A+++ ccu unit I call it. Climate control unit. Because in a few minutes you can easily go from heating to air conditioning back to heating in moments again. Isn’t new technology as a kid I lived with a heat pump but that was thousands…”
Customer Review: “I own Tecopa Palms Thermoplastic Hot Springs Resort located on the Southern edge of the ‘very hot’ and sometimes ‘cold’ Mojave desert. I bought 2 of these ac/ heater units – 2 years ago and installed 1 in each of 2 cabins. Perfect. From cold to hot they are the real deal. The control panel is easy…”
4. OLMO 9,000 BTU PTAC with Heating and Cooling, Smart Kit, and Remote Control
This OLMO PTAC (Packaged Terminal Air Conditioner) is a professional-grade unit designed for hotels, apartments, and commercial spaces. With built-in heating, cooling, and smart connectivity, it’s a modern upgrade for permanent installations.
Key Features That Stand Out
✓ 9,000 BTU cooling + 3.5 kW electric heater
✓ Compatible with 230/208V electrical systems
✓ Includes smart kit for app-based control
✓ Uses eco-friendly R-32 refrigerant
✓ Self-evaporative system reduces drainage needs
Why We Recommend It
We love this unit for its hotel-style reliability and smart features. It’s efficient, low-maintenance, and perfect for anyone upgrading from an older PTAC system.
Best For
Property managers, hotel owners, or homeowners replacing an existing PTAC unit who want modern efficiency and remote control.
Pros and Cons
Pros:
- Professional-grade durability
- Smart controls via app
- No water leakage thanks to self-evaporative design
- Heating and cooling in one compact unit
Cons:
- Requires wall sleeve and exterior grille (sold separately)
- Higher upfront cost than standard ACs
Customer Reviews
Customer Review: “Great option if you want something that’s both efficient and easy to use for heating and cooling your space. Its sleek design makes it fit nicely in any room without being an eyesore. The standout feature for me is the self-evaporative system—no more worrying about leaking water, which is a huge relief.”
Customer Review: “Worked out nice and easy just let it rot into the old metal casing works like a dream saved a lot of money.”
5. LG 10,000 BTU Smart Window Air Conditioner with WiFi and Remote for 450 Sq. Ft.
While technically a window unit, this LG smart AC can be installed through the wall with the right adapter. Its Wi-Fi capability and app control make it a standout for tech-savvy users who want remote access and scheduling.
Key Features That Stand Out
✓ 10,000 BTUs covers up to 450 sq. ft.
✓ LG ThinQ app enables smartphone control
✓ Voice control compatible with Alexa and Google Assistant
✓ Slide-in/slide-out chassis for easy maintenance
✓ Energy Star certified for efficiency
Why We Recommend It
This is our top pick for smart home integration. If you love controlling your climate from your phone or with voice commands, this unit brings modern convenience to traditional cooling.
Best For
Tech enthusiasts, smart home users, or anyone who wants to pre-cool their space before arriving home.
Pros and Cons
Pros:
- Full smartphone and voice control
- Easy filter cleaning and maintenance
- Energy-efficient operation
- Sleek, modern design
Cons:
- Requires Wi-Fi and app setup
- Not a true built-in wall unit (needs modification)
Customer Reviews
Customer Review: “Just installed this air conditioner. So far, it’s working great. I had to get this model because it required the least window height clearance of any quality conditioner that I can find. My older home has storm windows with high base frames, which are a couple of inches higher than the interior…”
Customer Review: “ADDED PIX OF WHITE/BLUE FILTER PERFORMANCE. As you can clearly see, the filter did keep the white mesh factory filter and the evaporator coils SPOTLESSLY CLEAN. The filter was changed after about 3 months. EDIT: ADDED ENERGY COSTS FROM TAPO UNITS. REVISED ENERGY COST FOR JULY = $66.67 FOR HOME A…”
Complete Buying Guide for Through The Wall Air Conditioner
Essential Factors We Consider
When choosing a through the wall air conditioner, we focus on cooling capacity (BTUs), room size compatibility, energy efficiency, noise level, installation requirements, and smart features. Always match the BTU rating to your square footage—too little power won’t cool effectively, while too much can cause short cycling. Check if your wall already has a sleeve or if you’ll need professional installation. Also consider whether you need heating, remote control, or app connectivity.
Budget Planning
Prices for through the wall air conditioners range from around $300 for basic models to over $800 for high-end or smart units. Factor in installation costs ($150–$400) if you’re not DIY-savvy. Energy-efficient models may cost more upfront but save money on electricity bills over time. Look for Energy Star ratings and check local utility rebates.
Final Thoughts
A quality through the wall air conditioner offers permanent, reliable cooling without blocking your windows. Whether you’re outfitting an apartment, hotel, or home, there’s a model here to fit your needs—from budget-friendly basics to smart, high-performance systems.
Frequently Asked Questions
Q: Can I install a through the wall air conditioner myself?
A: If you already have a wall sleeve, basic installation is doable for handy homeowners. However, new installations require cutting into the wall and electrical work—always consult a licensed professional to ensure safety and proper sealing.
Q: Do through the wall ACs use more energy than window units?
A: Not necessarily. Modern through the wall units are often more energy-efficient because they’re sealed better, reducing air leaks. Look for Energy Star certification to maximize savings.
Q: Can I use a window AC in a wall sleeve?
A: Some window units can be adapted, but it’s not recommended long-term. True through the wall models are designed for permanent installation and better airflow management.
Q: How do I know what BTU size I need?
A: As a rule of thumb, multiply your room’s square footage by 20–25. For example, a 400 sq. ft. room needs about 8,000–10,000 BTUs. Adjust upward for high ceilings, direct sunlight, or occupancy.
Q: Are through the wall air conditioners noisy?
A: Most modern units operate between 50–60 dB—similar to a quiet conversation. Check decibel ratings in product specs if noise is a concern, especially for bedrooms.
Ready to beat the heat with a reliable, built-in cooling solution? Whether you need powerful performance, smart features, or budget-friendly operation, one of these top-rated through the wall air conditioners is sure to keep you comfortable all summer long. Click any “Check Price” button above to compare deals and find your perfect match today!
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