The best through the wall air conditioners of 2024, as rated by Consumer Reports, deliver powerful cooling, energy efficiency, and quiet operation for lasting comfort. Top picks like the Frigidaire FHWW083WB1 and LG LW8016ER stand out for their reliability, ease of installation, and smart features, making them ideal for bedrooms and living spaces. Trusted testing and real-world performance ensure these units offer the best value and long-term satisfaction.

Key Takeaways

• Top Picks Ranked: Consumer Reports lists most reliable through-the-wall ACs for 2024.
• Energy Efficiency Matters: Choose ENERGY STAR models to cut long-term costs.
• Proper Sizing Essential: Match BTU to room size for optimal cooling.
• Installation Complexity: Hire pros for safe, airtight wall sleeve setup.
• Smart Features Win: Prioritize units with Wi-Fi and remote control.
• Noise Levels Checked: Quieter models (<55 dB) earn higher user ratings.
• Warranty Coverage: Look for 5+ year compressor warranties for peace of mind.

Why Through the Wall Air Conditioners Are a Smart Choice for 2024

Let’s face it—summer heat can be brutal, especially if you live in an apartment, condo, or a home without central air. I remember one sweltering July when my window AC unit finally gave up the ghost after five years of loyal service. I was sweating through my shirt, my dog was panting like he’d run a marathon, and my ice cream was melting faster than I could eat it. That’s when I discovered through the wall air conditioners—and honestly, it felt like a game-changer.

Unlike traditional window units, through the wall air conditioners are installed directly into a wall sleeve, making them more permanent, energy-efficient, and less obtrusive. They don’t block your view, they’re quieter, and they offer better insulation and security. But with so many models on the market, how do you choose the right one? That’s where best through the wall air conditioner consumer reports come in. These trusted reviews, based on real-world testing, performance data, and user feedback, help cut through the marketing noise and highlight the units that truly deliver.

What to Look for in a Through the Wall Air Conditioner

Cooling Capacity (BTUs) and Room Size

One of the most critical factors when shopping for a through the wall AC is the British Thermal Unit (BTU) rating. This tells you how much heat the unit can remove from a room per hour. Too few BTUs, and your room will feel like a sauna. Too many, and the unit will cycle on and off too quickly, reducing efficiency and comfort.

As a general rule:

• 100–150 sq. ft.: 5,000 BTUs
• 150–250 sq. ft.: 6,000 BTUs
• 250–350 sq. ft.: 8,000 BTUs
• 350–450 sq. ft.: 10,000 BTUs
• 450–600 sq. ft.: 12,000 BTUs

For example, my 300 sq. ft. bedroom with large south-facing windows needed at least 8,000 BTUs. I ended up going with a 9,000 BTU model to account for the extra sun exposure. It made all the difference—cool air within 20 minutes, even at 95°F outside.

Energy Efficiency and EER Ratings

Energy efficiency isn’t just good for the planet—it’s good for your wallet. Look for units with a high Energy Efficiency Ratio (EER). The EER is calculated by dividing the cooling output (in BTUs) by the power input (in watts). A higher EER means less energy used for the same cooling power.

The Department of Energy sets a minimum EER of 9.7 for through the wall units, but the best models go well above 11. For instance, the Frigidaire FHPC102AC1 has an EER of 11.3, which means it uses about 15% less electricity than the minimum standard. Over a summer, that can save you $30–$50 in utility costs.

Tip: Check for the ENERGY STAR label. These models meet strict efficiency guidelines and often qualify for local rebates or tax credits.

Noise Levels and Comfort Features

Nobody wants a loud AC unit disrupting their sleep or Zoom calls. Most through the wall models operate between 50 and 65 decibels—about the volume of a normal conversation. The quieter the better, especially for bedrooms.

Look for features like:

• Sleep mode: Automatically adjusts temperature and fan speed at night
• Smart thermostat: Learns your schedule and adjusts accordingly
• Dehumidifier function: Reduces moisture, making the air feel cooler
• Remote control and app integration: Control your AC from your phone

I once tested a model that was so loud, I had to turn up my TV. It was a dealbreaker. The LG LW1217IVSM, on the other hand, has a “Quiet Mode” that drops noise to 49 dB—perfect for light sleepers like me.

Installation and Sleeve Compatibility

Through the wall units require a wall sleeve, which is a metal or plastic housing built into the wall. If you’re replacing an old unit, check if your existing sleeve is compatible. Most sleeves are standardized at 26” wide, but depth and height can vary.

If you’re installing a new sleeve, you’ll need:

• Basic carpentry tools
• A helper (it’s heavy!)
• Insulation and weatherproofing materials

Pro tip: Hire a professional if you’re not comfortable with wall modifications. A poorly installed unit can lead to air leaks, water damage, or even structural issues.

Top 5 Best Through the Wall Air Conditioners According to Consumer Reports

1. Frigidaire FHPC102AC1 – Best Overall

Consumer Reports consistently ranks this model at the top of its class. With 10,000 BTUs and an 11.3 EER, it’s powerful yet efficient. It covers up to 450 sq. ft., making it ideal for large bedrooms or small living rooms.

What stands out:

• 3 cooling speeds + 3 fan speeds for precise control
• 24-hour timer and remote control
• Washable, reusable air filter (easy to clean monthly)
• Smart features via the Frigidaire app (Wi-Fi enabled)

The only downside? It’s a bit bulky (26” x 15.5” x 20”), so make sure your sleeve fits. But for the performance, it’s worth the space.

2. LG LW1217IVSM – Best for Quiet Operation

If you value peace and quiet, this 12,000 BTU unit is a dream. It operates at just 49 dB on low mode—quieter than a library. It’s also one of the few models with a dual-inverter compressor, which adjusts cooling speed gradually instead of turning on/off abruptly. This reduces noise, saves energy, and extends the unit’s lifespan.

Other highlights:

• SmartThinQ app for remote control and diagnostics
• Auto-restart after power outages
• Energy-saving mode that reduces power by up to 25%

One note: The app setup can be finicky on older Android devices. I had to restart my phone twice to get it to connect, but once it did, everything worked smoothly.

3. Friedrich Kuhl+ SS12M10 – Best for Durability

Friedrich is known for commercial-grade ACs, and the Kuhl+ line brings that ruggedness to residential units. The SS12M10 has a corrosion-resistant cabinet, making it ideal for coastal areas or humid climates.

Key features:

• 12,000 BTUs with 11.5 EER
• 3-speed fan with auto-swing louvers for even air distribution
• Washable antimicrobial filter (great for allergy sufferers)
• Built-in heater (rare in wall units—perfect for spring/fall)

It’s heavier than most (70 lbs), so professional installation is recommended. But for long-term reliability, it’s hard to beat.

4. GE AHEK10AC – Best Budget Option

Not everyone wants to spend $600+ on an AC. The GE AHEK10AC delivers solid performance at a lower price point. With 10,000 BTUs and an 11.0 EER, it’s efficient enough for most homes.

What you get:

• 24-hour timer and remote
• 3 cooling and fan speeds
• Washable filter
• Easy-to-read LED display

The trade-off? It’s louder (62 dB) and lacks smart features. But if you just need reliable, no-frills cooling, it’s a great pick.

5. Keystone KSTAW12A – Best for Small Spaces

Got a studio apartment or a tiny home? The KSTAW12A is compact (26” x 15.5” x 17”) but packs a punch with 12,000 BTUs. It’s designed for rooms up to 550 sq. ft. and has a 10.5 EER.

Bonus features:

• Dehumidifier mode (removes 2.5 pints per hour)
• Energy saver mode
• Easy-clean filter

The remote is basic, but the unit itself is reliable and affordable. Just make sure your wall sleeve is deep enough—this one is shallower than most.

How Consumer Reports Tests and Ranks Air Conditioners

Performance Testing: Cooling Power and Consistency

Consumer Reports doesn’t just rely on specs—they test each unit in real-world conditions. Their lab simulates a 90°F room and measures how quickly the AC cools it to 75°F. They also track how evenly the temperature is maintained over 24 hours.

For example, the Frigidaire FHPC102AC1 cooled a 400 sq. ft. room in 22 minutes and kept the temperature within 1°F of the set point. That’s impressive consistency.

Energy Efficiency and Long-Term Costs

CR calculates the estimated annual energy cost for each model. They use national average electricity rates ($0.13/kWh) and assume 8 hours of use per day for 120 days. The LG LW1217IVSM came in at $98/year, while the GE AHEK10AC was $105/year—a small difference, but it adds up over time.

Reliability and User Satisfaction

CR surveys thousands of users to track:

• Breakdown frequency
• Ease of cleaning/maintenance
• Customer service experience

The Friedrich Kuhl+ scored highest in reliability, with only 5% of users reporting issues in the first 5 years. The Keystone KSTAW12A had a 12% issue rate, mostly related to remote control glitches.

Noise and Comfort Evaluation

CR uses sound meters to measure noise levels at various settings. They also test features like airflow direction, remote responsiveness, and filter accessibility. Units with “auto-restart” and “sleep mode” score higher because they improve user comfort.

Installation Tips and Common Mistakes to Avoid

Preparing the Wall and Sleeve

Before you start:

• Check local building codes (some areas require permits)
• Ensure the wall is structurally sound (no pipes or wires in the way)
• Use a level to mark the sleeve opening

Cutting the hole is the trickiest part. Use a jigsaw for wood or drywall, and a reciprocating saw for masonry. Always wear safety goggles and a mask—dust gets everywhere!

Sealing and Insulating for Efficiency

A poorly sealed sleeve can lose up to 30% of cooling power. Use:

• Foam weatherstripping around the sleeve
• Spray foam to fill gaps (don’t overdo it—expansion can warp the sleeve)
• Aluminum tape for joints

I learned this the hard way. My first install had a tiny gap on one side. It wasn’t until I noticed a draft and higher electric bill that I realized the mistake. A quick reseal fixed it, but it cost me a month of wasted energy.

Electrical Safety and Power Requirements

Most through the wall units require a 115-volt, 15-amp circuit. Larger models (14,000+ BTUs) may need a 230-volt outlet. Never plug a high-BTU unit into an extension cord or power strip—it can overheat and cause a fire.

Tip: Use a dedicated circuit if possible. This prevents tripping breakers when other appliances are running.

Maintenance for Longevity

To keep your AC running smoothly:

• Clean the filter monthly (just rinse with water and let dry)
• Inspect the condenser coils annually (use a soft brush to remove dust)
• Check the drain pan for clogs (prevents water leaks)

I set a phone reminder every month to clean the filter. It takes 5 minutes and makes a huge difference in airflow and efficiency.

Data Comparison: Top 5 Models at a Glance

Model	BTUs	EER	Noise (dB)	Smart Features	Est. Annual Cost	CR Rating
Frigidaire FHPC102AC1	10,000	11.3	52	Yes (Wi-Fi app)	$95	92/100
LG LW1217IVSM	12,000	11.2	49	Yes (SmartThinQ)	$98	94/100
Friedrich Kuhl+ SS12M10	12,000	11.5	54	No	$102	90/100
GE AHEK10AC	10,000	11.0	62	No	$105	85/100
Keystone KSTAW12A	12,000	10.5	58	No	$110	83/100

This table makes it easy to compare the best through the wall air conditioner consumer reports picks side by side. The LG and Frigidaire models lead in both performance and smart features, while the Friedrich wins for durability. The GE and Keystone are solid budget options, though they sacrifice a bit on noise and efficiency.

Final Thoughts: Finding the Right Fit for Your Home

Choosing a through the wall air conditioner isn’t just about BTUs or price—it’s about finding a unit that fits your lifestyle, space, and long-term needs. Whether you’re a tech enthusiast who loves app controls, a budget-conscious shopper, or someone who values peace and quiet, there’s a model on this list for you.

Remember, the best through the wall air conditioner consumer reports don’t just highlight specs—they reveal real-world performance, reliability, and value. Take your time, read the reviews, and don’t rush the installation. A well-chosen, properly installed unit can keep you cool for a decade or more.

And hey, if you’re like me and hate sweating through summer nights, this small investment can make a world of difference. Your future self (and your ice cream) will thank you.

Frequently Asked Questions

What are the best through the wall air conditioners according to Consumer Reports in 2024?

Consumer Reports recommends several top-performing through the wall air conditioners for 2024, including models from Frigidaire, LG, and GE, based on cooling efficiency, noise levels, and reliability. These units are praised for their energy-saving features and consistent performance in various room sizes.

How do I choose the right size through the wall air conditioner for my room?

To choose the right size, measure your room’s square footage and match it to the unit’s BTU rating—typically 8,000 BTUs for rooms up to 350 sq. ft. and 12,000 BTUs for up to 550 sq. ft. An improperly sized unit can lead to inefficiency and poor cooling.

Are through the wall air conditioners energy efficient?

Many of the best through the wall air conditioners in 2024 come with ENERGY STAR certification, offering improved energy efficiency and lower utility bills. Look for models with high EER (Energy Efficiency Ratio) ratings for optimal performance and savings.

What features should I look for in a through the wall AC unit?

Key features include adjustable thermostats, multiple fan speeds, remote control, washable filters, and quiet operation. Some top models also offer smart connectivity and programmable timers for added convenience and energy management.

How difficult is it to install a through the wall air conditioner?

Installation requires cutting a hole in an exterior wall and securing the unit with a sleeve, so it’s more complex than window units. It’s recommended to hire a professional unless you have experience with HVAC systems and wall modifications.

Do Consumer Reports test through the wall air conditioners for noise levels?

Yes, Consumer Reports evaluates noise levels as part of their testing, measuring decibel output during operation. Quieter models are highlighted for bedrooms and living areas, helping consumers choose units that won’t disrupt daily activities.