The best Lowe’s through the wall air conditioners deliver powerful, efficient cooling with a permanent, space-saving design ideal for year-round comfort. Engineered for durability and quiet operation, these units offer precise temperature control and are backed by trusted brands and professional installation support at Lowe’s. Perfect for replacing old units or upgrading your climate control, they combine sleek aesthetics with high-performance cooling.

Key Takeaways

• Choose the right size: Match BTU capacity to room square footage for efficient cooling.
• Check wall compatibility: Ensure your wall can support the unit’s dimensions and weight.
• Prioritize energy efficiency: Look for ENERGY STAR models to reduce electricity costs.
• Install with proper sealing: Prevent air leaks with a secure, insulated frame around the unit.
• Opt for quiet operation: Select models with low decibel ratings for undisturbed comfort.
• Use built-in features: Take advantage of programmable timers and remote controls for convenience.

Best Lowes Through the Wall Air Conditioner for Cool Comfort

Let’s be honest—summer heat can be brutal. I remember one July afternoon a few years back, the temperature hit 98°F, and my old window AC unit was wheezing like it had run a marathon. I was sticky, frustrated, and seriously considering moving to Alaska. That’s when I started seriously researching through-the-wall air conditioners, and specifically, models available at Lowe’s. After weeks of comparing specs, reading reviews, and even calling customer service twice (yes, I’m that person), I finally found a unit that changed my summer experience. It wasn’t just about cooling—it was about peace of mind, energy efficiency, and not having to wrestle a heavy window unit every spring and fall.

If you’re like me—someone who values comfort, practicality, and long-term savings—you’ve probably landed here because you’re tired of the window AC shuffle. You want something permanent, quiet, and powerful enough to handle those sweltering afternoons without tripping your circuit breaker. Through-the-wall air conditioners offer exactly that: a built-in solution that stays in place year-round, doesn’t block your view, and often runs more efficiently than portable or window units. And when it comes to trusted home improvement retailers, Lowe’s stands out with a solid selection of reliable, well-reviewed models from brands like LG, Frigidaire, and GE. In this guide, I’ll walk you through everything you need to know to pick the best Lowes through the wall air conditioner for your home—without the sales fluff or confusing jargon.

Why Choose a Through-the-Wall Air Conditioner?

Before we dive into specific models, let’s talk about why a through-the-wall AC might be the right choice for you. I used to think window units were the only option for renters or people without central air. But after installing a through-the-wall unit, I realized how much I’d been missing. These units are designed to be permanently installed in an exterior wall, offering a clean, built-in look that blends seamlessly with your home’s architecture. No more unsightly window units sticking out, no more drafts from poorly sealed windows, and definitely no more lugging heavy boxes up and down stairs every season.

Space-Saving and Aesthetic Benefits

One of the biggest advantages I noticed right away was how much space I regained. My living room window used to be half-blocked by a bulky window AC, which not only looked messy but also limited natural light. With a through-the-wall unit, the grille is flush with the wall, and the front panel sits neatly inside. It’s sleek, modern, and doesn’t interfere with curtains or furniture placement. Plus, since it’s installed at floor level or slightly above, it doesn’t obstruct your view—something I didn’t appreciate until I had it.

Energy Efficiency and Performance

Through-the-wall units are generally more energy-efficient than window models. Because they’re sealed tightly into the wall, there’s less air leakage, which means your cooled air stays inside and hot air stays out. I saw a noticeable drop in my summer electric bill after switching—about 15% less than with my old window unit. Many models also come with ENERGY STAR certification, which means they meet strict efficiency guidelines set by the EPA. That’s not just good for your wallet; it’s better for the planet too.

Quieter Operation

Noise was a huge factor for me. My old window unit sounded like a jet engine taking off every time the compressor kicked on. Through-the-wall units, especially the newer inverter models, are significantly quieter. The compressor and fan are housed in a sealed compartment, and the sound is directed outward through the wall. I can now watch TV, take phone calls, or even nap without being interrupted by constant buzzing. If you’re sensitive to noise—or just want a more peaceful home environment—this is a game-changer.

Top Features to Look for in a Lowes Through the Wall Air Conditioner

Not all through-the-wall air conditioners are created equal. When I was shopping, I quickly realized that features matter—a lot. It’s easy to get overwhelmed by BTUs, EER ratings, and remote controls, but focusing on the right features helped me narrow down my choices. Here’s what I learned to prioritize.

BTU Capacity and Room Size Matching

BTU stands for British Thermal Unit, and it measures how much heat an air conditioner can remove per hour. The bigger the room, the higher the BTU you’ll need. But here’s the catch: too many BTUs can lead to short cycling—where the unit turns on and off too quickly—which wastes energy and doesn’t dehumidify properly. Too few, and your room will never feel cool.

As a general rule:

• 100–300 sq. ft.: 5,000–6,000 BTUs
• 300–500 sq. ft.: 7,000–8,000 BTUs
• 500–700 sq. ft.: 9,000–12,000 BTUs
• 700+ sq. ft.: 12,000–18,000 BTUs

I have a 450-square-foot living room, so I went with an 8,000 BTU unit. It cools the space evenly and maintains a steady temperature without overworking. Lowe’s website has a handy room size calculator that helped me confirm my choice—definitely use it before buying.

Energy Efficiency Ratio (EER)

The EER tells you how efficiently the unit uses electricity. It’s calculated by dividing the cooling output (in BTUs) by the power input (in watts). The higher the EER, the more efficient the unit. I looked for models with an EER of 10 or higher—this is where you’ll see real savings over time. For example, a unit with an EER of 12 uses about 20% less energy than one with an EER of 10. Over a summer, that can add up to $30–$50 in savings, depending on your electricity rate.

Smart Features and Remote Control

Let’s face it—convenience matters. I love being able to adjust the temperature from my phone or couch. Many Lowe’s through-the-wall models now come with Wi-Fi connectivity and smartphone apps. I can turn the AC on 30 minutes before I get home, so the house is cool when I walk in. Some even integrate with Alexa or Google Assistant, so I can say, “Hey Google, set the AC to 72 degrees,” and it happens. Remote controls are standard, but look for ones with backlit displays and programmable timers—these small details make a big difference.

Installation and Maintenance

Installation is a big deal. Unlike window units, through-the-wall ACs require cutting a hole in your exterior wall and securing the sleeve. I hired a handyman to do it, and it cost about $300, including materials. But if you’re handy, Lowe’s sells installation kits that include the sleeve, trim, and instructions. Just make sure your wall is structurally sound and not obstructed by plumbing or electrical lines.

Maintenance is simpler than you’d think. Most units have washable filters that you can clean every month or two. I set a phone reminder for the first of every month—just a quick rinse under the sink, and it’s good to go. Some models even have filter change indicators, which is a nice touch.

Top Lowes Through the Wall Air Conditioner Models in 2024

After testing a few models and reading dozens of customer reviews, here are the top through-the-wall air conditioners you can find at Lowe’s right now. I’ve focused on reliability, performance, and value—because let’s be real, no one wants to spend $800 on a unit that breaks in two years.

LG LW8016ER – Best Overall

This 8,000 BTU unit is my personal favorite. It’s ENERGY STAR certified, has an EER of 12.1, and cools my 450-square-foot living room in under 20 minutes. The design is sleek, with a white front panel that blends into most walls. It comes with a remote, 24-hour timer, and three cooling and fan speeds. The best part? It’s whisper-quiet—only 52 decibels on low, which is quieter than a normal conversation.

I also love the “Energy Saver” mode, which cycles the fan on and off to maintain temperature without overcooling. And if the power goes out, it remembers your settings when it comes back on—no need to reprogram. At around $450, it’s a solid investment that pays off in comfort and efficiency.

Frigidaire FFRA081WAE – Best Budget Option

If you’re on a tight budget, this 8,000 BTU model is a great choice. Priced around $350, it’s one of the most affordable through-the-wall units at Lowe’s. It has an EER of 11.2, which is still quite efficient, and includes a remote, washable filter, and three cooling speeds. It’s not as quiet as the LG (around 56 decibels), but for the price, it’s hard to beat.

I recommended this to my sister for her guest room, and she’s been thrilled. It cools quickly, doesn’t vibrate the wall, and the installation was straightforward. Just keep in mind that it doesn’t have Wi-Fi or smart features—so if you want app control, you’ll need to look elsewhere.

GE AHY08LZ – Best for Large Rooms

For bigger spaces, the GE AHY08LZ (8,000 BTU) or the AHY12LZ (12,000 BTU) are excellent options. I tested the 12,000 BTU model in a 700-square-foot basement, and it handled the heat like a champ. It has an EER of 12.0, a remote, and a 24-hour timer. The “SmartHQ” app lets you control it from your phone, and it works with Alexa.

One standout feature is the “Follow Me” remote, which uses a sensor to detect the temperature where you are, not just near the unit. So if you’re sitting on the couch across the room, it adjusts based on your actual comfort level. It’s a small detail, but it makes a big difference on hot days.

Frigidaire Gallery FGRC1044T1 – Best Smart Features

If you’re all about tech, this 10,000 BTU model is worth a look. It’s Wi-Fi enabled, works with Alexa and Google Assistant, and has a sleek touchscreen display. You can set schedules, monitor energy usage, and even get alerts if the filter needs cleaning. The EER is 12.2, and it cools a 550-square-foot room efficiently.

I used this in my home office, and the app integration was a lifesaver. I could turn it on during my lunch break and come back to a cool, productive space. The only downside? It’s pricier—around $650—but if smart features are a priority, it’s worth the upgrade.

Installation Tips: What You Need to Know

Installing a through-the-wall air conditioner isn’t as simple as plugging in a window unit. It requires planning, tools, and sometimes professional help. Here’s what I learned from my own installation experience.

Choosing the Right Location

The first step is picking the perfect spot. Look for an exterior wall that’s at least 7–8 inches thick (to accommodate the sleeve), away from direct sunlight if possible, and close to an electrical outlet. Avoid areas near doors, windows, or vents that could interfere with airflow. I chose a spot on the north side of my house—less sun exposure meant the unit didn’t have to work as hard.

Measuring and Cutting the Opening

Every unit comes with a specification sheet that tells you the exact dimensions of the sleeve. Measure twice, cut once—this is not the time for guesswork. I used a stud finder to make sure I wasn’t cutting into a load-bearing wall or electrical conduit. Then, I marked the outline with a pencil and used a reciprocating saw to cut through the siding and sheathing. It was messy, but totally doable with the right tools.

Securing the Sleeve and Unit

Once the hole is cut, you slide the metal sleeve into place and secure it with screws. Then, you insert the air conditioner and connect it to the sleeve. Most units come with foam insulation strips to seal gaps and prevent air leaks. I also applied exterior-grade caulk around the edges to keep out moisture and pests. Finally, I installed the interior and exterior trim for a clean finish.

If you’re not comfortable with electrical work, hire a licensed electrician to connect the unit to a dedicated 20-amp circuit. Most through-the-wall ACs require their own circuit to avoid overloading your home’s wiring.

Maintenance and Troubleshooting Common Issues

Even the best air conditioner needs a little TLC to keep running smoothly. Here’s how I keep my unit in top shape—and what to do if something goes wrong.

Monthly Filter Cleaning

The air filter collects dust, pollen, and pet dander. If it gets clogged, the unit has to work harder, which increases energy use and can lead to freezing. I clean mine every month during peak season. Just slide it out, rinse it under warm water, let it dry, and pop it back in. Some models have a “Check Filter” light that reminds you—take advantage of it.

Checking for Ice Buildup

If you notice ice forming on the coils, it’s usually a sign of restricted airflow or low refrigerant. Turn the unit off and let the ice melt. Check the filter—if it’s dirty, clean it. If the problem persists, call a technician. Running the unit with ice can damage the compressor.

Unusual Noises or Odors

A little hum is normal, but grinding, rattling, or squealing sounds aren’t. These could indicate loose parts, a failing motor, or debris in the fan. Turn the unit off and inspect it. If you can’t find the issue, it’s time for professional help. Similarly, a musty smell might mean mold in the drain pan—clean it with a bleach solution and make sure the drain isn’t clogged.

Energy Savings and Environmental Impact

One of the biggest reasons I switched to a through-the-wall unit was to reduce my carbon footprint and lower my energy bills. Here’s how these units stack up.

Comparing Energy Use

Let’s look at the numbers. A typical 8,000 BTU window unit uses about 700 watts, while a high-efficiency through-the-wall model uses around 600 watts. Over a 120-day cooling season, running 8 hours a day, that’s a difference of about 96 kWh—enough to power a laptop for over 1,000 hours. At $0.12 per kWh, that’s nearly $12 in savings per summer.

Environmental Benefits

ENERGY STAR-certified units use 15% less energy than standard models. Over 10 years, that can prevent over 1,000 pounds of carbon dioxide emissions—equivalent to planting 12 trees. Plus, many newer models use R-32 refrigerant, which has a lower global warming potential than older refrigerants like R-22.

By choosing an efficient through-the-wall unit, you’re not just cooling your home—you’re contributing to a healthier planet.

Final Thoughts: Is a Through-the-Wall AC Right for You?

After living with a through-the-wall air conditioner for over two years, I can confidently say it was one of the best home upgrades I’ve made. It’s quiet, efficient, and reliable—and it’s saved me hundreds in energy costs. If you’re tired of the window unit hassle, want better cooling performance, and don’t mind a little installation effort, a through-the-wall model from Lowe’s is a smart investment.

Look for a unit with the right BTU for your space, a high EER rating, and features that match your lifestyle—whether that’s a simple remote or full smart-home integration. And don’t skip the maintenance—clean filters and proper care will keep your unit running smoothly for years.

Summer doesn’t have to be a sweaty, stressful ordeal. With the right Lowes through the wall air conditioner, you can enjoy cool, comfortable air all season long—without the noise, the drafts, or the monthly wrestling match with a window unit. So take a deep breath, do your research, and get ready to beat the heat in style.

Frequently Asked Questions

What is the best Lowes through the wall air conditioner for small rooms?

The Frigidaire FHPC102AC1 (available at Lowe’s) is ideal for small rooms up to 450 sq. ft., offering 10,000 BTUs and energy-saving modes. Its compact design and quiet operation make it a top choice for bedrooms or home offices.

Are through-the-wall AC units more efficient than window units?

Yes, through-the-wall air conditioners often have better insulation and a tighter seal, reducing energy loss. This design makes them more efficient than window units, especially in extreme climates.

Can I install a Lowes through the wall air conditioner myself?

While DIY installation is possible, hiring a professional is recommended due to the need for precise wall modifications and electrical work. Lowe’s offers installation services for hassle-free setup.

What size through-the-wall AC do I need for my space?

For a 300–450 sq. ft. room, choose a 10,000–12,000 BTU unit like the GE AJCQ12DWJ (sold at Lowe’s). Larger spaces may require 14,000+ BTUs—check the manufacturer’s sizing guide.

Do through-the-wall AC units require special maintenance?

Regularly clean the washable air filter and clear debris from the outdoor side. Unlike window units, they don’t need seasonal removal but benefit from annual professional inspections.

Which Lowes through the wall air conditioner has the best warranty?

The Friedrich Kuhl SL28N10 (available at Lowe’s) includes a 5-year sealed system warranty, among the longest in its class. Many models also offer 1–2 years of labor coverage.