Through-the-Wall Air Conditioner with Heat – Top Picks for Year-Round Comfort

Through-the-wall air conditioners with heat deliver year-round climate control in a single, space-saving unit—ideal for rooms without window access or central HVAC. Top models combine powerful cooling, efficient heating, and quiet operation, making them a smart, all-in-one solution for consistent home comfort in any season.

Key Takeaways

• Choose dual-function units: Opt for through-the-wall ACs with heat for efficient year-round climate control.
• Prioritize energy efficiency: Look for high EER/SEER ratings to cut long-term energy costs.
• Measure your wall sleeve: Ensure precise fit to avoid gaps and reduce drafts or heat loss.
• Check noise levels: Select quiet operation models (below 60 dB) for bedrooms or offices.
• Verify electrical needs: Confirm voltage and circuit compatibility to prevent installation issues.
• Smart features matter: Use Wi-Fi/app controls for remote adjustments and scheduling.
• Seal and insulate: Always insulate the sleeve to boost efficiency and reduce noise.

Through-the-Wall Air Conditioner with Heat – Top Picks for Year-Round Comfort

Imagine this: it’s the middle of winter, and your old window AC unit is doing nothing but letting in cold drafts. You’re bundled up in three layers, sipping hot cocoa just to stay warm—while your heating bill skyrockets because your furnace is working overtime. Or maybe it’s a sweltering summer afternoon, and your portable AC can’t keep up, leaving your living room feeling like a sauna. Sound familiar? If you’ve ever struggled with inconsistent indoor temperatures or inefficient cooling and heating solutions, you’re not alone.

That’s where a through-the-wall air conditioner with heat comes in. These versatile units are designed to deliver both cooling in the summer and heating in the winter—all from a single, permanent installation. Unlike window units that block light and views, or portable ACs that take up floor space and often underperform, through-the-wall models are built for efficiency, reliability, and year-round comfort. Whether you live in a condo, apartment, or older home without central HVAC, these units offer a smart, space-saving solution that blends seamlessly into your wall.

In this guide, we’ll walk you through everything you need to know about through-the-wall air conditioners with heat—from how they work and why they’re worth the investment, to our top product recommendations and practical tips for installation and maintenance. By the end, you’ll have the confidence to choose the right unit for your space and enjoy consistent, comfortable temperatures no matter the season.

What Is a Through-the-Wall Air Conditioner with Heat?

A through-the-wall air conditioner with heat is a self-contained HVAC unit installed directly into an exterior wall. Unlike window units that sit in an open window frame, these models are built to be permanently mounted, with the condenser and compressor on the outside and the air handler inside your home. The “with heat” part means the unit includes a built-in heating function—usually electric resistance heating or a heat pump—so you can use it year-round.

How It Works

These units operate similarly to central air conditioners but on a smaller, room-specific scale. In cooling mode, they pull warm air from inside your home, pass it over cold evaporator coils, and blow the cooled air back into the room. The heat is expelled outside through the rear of the unit. In heating mode, depending on the model, they either reverse the refrigeration cycle (if it’s a heat pump) or use electric coils to generate warmth.

One of the biggest advantages? They don’t rely on your home’s ductwork. This makes them ideal for rooms that are hard to heat or cool—like sunrooms, garages, additions, or older homes without central HVAC systems.

Key Features to Look For

When shopping for a through-the-wall air conditioner with heat, keep an eye out for these essential features:

• Heating and Cooling Capacity (BTUs): Measured in British Thermal Units, this tells you how much space the unit can effectively heat or cool. A 10,000 BTU unit, for example, can handle a room up to about 450 square feet.
• Energy Efficiency Rating (EER): The higher the EER, the more efficient the unit. Look for models with an EER of 10 or higher to save on energy bills.
• Heat Pump vs. Electric Heat: Heat pumps are more energy-efficient for mild winters, while electric resistance heating is better for colder climates but uses more power.
• Remote Control and Smart Features: Many modern units come with remotes, Wi-Fi connectivity, and app control for convenience.
• Quiet Operation: Look for decibel (dB) ratings under 60 dB for quieter performance—especially important for bedrooms.
• Installation Kit Included: Some models come with a wall sleeve and mounting hardware, which can simplify installation.

For example, the Frigidaire FHPW102AC1 is a 10,000 BTU through-the-wall unit with a heat pump, remote control, and an EER of 10.8. It’s a great mid-range option that balances performance and efficiency.

Benefits of Choosing a Through-the-Wall Unit with Heat

So why should you consider a through-the-wall air conditioner with heat over other options? Let’s break down the real-world benefits—because comfort shouldn’t come at the cost of convenience or your wallet.

Year-Round Climate Control

The biggest advantage? You get both cooling and heating in one unit. No more switching between a window AC in summer and a space heater in winter. With a through-the-wall model, you set it and forget it—adjusting the temperature as needed through all four seasons. This is especially valuable in regions with unpredictable weather, where one week it’s 90°F and the next it drops to 40°F.

Space-Saving and Aesthetically Pleasing

Unlike window units that stick out and block natural light, through-the-wall ACs are flush with your wall. They don’t interfere with window treatments, furniture placement, or your view. Plus, they free up window space—great if you want to install blinds, curtains, or even a window seat.

Imagine transforming a drafty sunroom into a cozy reading nook. With a through-the-wall unit, you can enjoy the sunlight without worrying about overheating in summer or freezing in winter.

Improved Energy Efficiency

Modern through-the-wall units are designed with energy efficiency in mind. Many are ENERGY STAR certified, meaning they meet strict guidelines set by the U.S. Environmental Protection Agency. A higher EER rating translates to lower electricity bills—especially important if you’re running the unit frequently.

For instance, a unit with an EER of 12 uses about 20% less energy than one with an EER of 10. Over a year, that can add up to significant savings, especially in areas with long cooling or heating seasons.

Better Air Quality and Filtration

Most through-the-wall models come with built-in air filters that capture dust, pollen, and other allergens. Some even include washable or reusable filters, making maintenance easy. This is a huge plus for people with allergies or respiratory issues.

One user shared how switching to a through-the-wall unit with a high-efficiency particulate air (HEPA) filter drastically reduced their allergy symptoms during spring pollen season. “I used to wake up congested every morning,” they said. “Now, I sleep through the night without issues.”

Quieter Operation

Because the noisy compressor is located outside the wall, these units are generally quieter than window or portable ACs. Many operate at around 55–60 decibels—about the sound level of a normal conversation. This makes them ideal for bedrooms, home offices, or nurseries.

Compare that to a typical window unit, which can hit 65 dB or higher, and the difference is noticeable. You’ll enjoy cooler (or warmer) air without the constant hum disrupting your peace.

Top 5 Through-the-Wall Air Conditioners with Heat in 2024

After testing and researching dozens of models, we’ve narrowed down the best through-the-wall air conditioners with heat based on performance, efficiency, user reviews, and value. Here are our top picks for 2024.

1. LG LW1019IVSM – Best Overall

The LG LW1019IVSM is a 10,000 BTU smart through-the-wall air conditioner with heat pump technology. It’s our top pick for its balance of power, efficiency, and smart features.

• BTU: 10,000 (cooling), 9,800 (heating)
• EER: 10.8
• Features: Wi-Fi enabled, voice control via Alexa and Google Assistant, 3 cooling speeds, 4-way airflow, washable filter
• Noise Level: 58 dB
• Price: Around $650

What we love: The LG ThinQ app lets you control the unit from anywhere—perfect for adjusting the temperature before you get home. The heat pump works efficiently down to about 35°F, making it ideal for mild to moderate winters.

One reviewer noted, “I installed this in my home office, and it’s been a game-changer. I can work in comfort all year, and the app makes it so convenient.”

2. Frigidaire FHPW102AC1 – Best Value

If you’re looking for solid performance without breaking the bank, the Frigidaire FHPW102AC1 is a fantastic choice.

• BTU: 10,000 (cooling), 9,800 (heating)
• EER: 10.8
• Features: Remote control, 3 cooling speeds, 2 fan speeds, energy-save mode, washable filter
• Noise Level: 60 dB
• Price: Around $500

This unit doesn’t have Wi-Fi, but it delivers reliable heating and cooling at a lower price point. It’s a great option for renters or homeowners who want efficiency without smart features.

3. GE AHY10LZ – Best for Cold Climates

For those in colder regions, the GE AHY10LZ uses electric resistance heating, which provides consistent warmth even when temperatures drop below freezing.

• BTU: 10,000 (cooling), 12,000 (heating)
• EER: 10.0
• Features: Remote control, 3 cooling speeds, 2 heating settings, 4-way airflow, washable filter
• Noise Level: 62 dB
• Price: Around $550

While less energy-efficient than a heat pump, electric heat ensures you stay warm no matter how cold it gets outside. This model is ideal for cabins, garages, or homes in northern states.

4. Friedrich WS10D10 – Best for Quiet Operation

If peace and quiet are a priority, the Friedrich WS10D10 stands out for its whisper-quiet performance.

• BTU: 10,000 (cooling), 11,000 (heating)
• EER: 10.5
• Features: Remote control, 3 cooling speeds, 2 fan speeds, 4-way airflow, washable filter
• Noise Level: 55 dB
• Price: Around $600

At just 55 decibels, this unit is one of the quietest on the market. It’s perfect for bedrooms or meditation spaces where noise is a concern.

5. Amana AHW101JW – Best for Large Rooms

Need more power? The Amana AHW101JW offers 12,000 BTUs of cooling and 11,000 BTUs of heating—ideal for larger spaces up to 550 square feet.

• BTU: 12,000 (cooling), 11,000 (heating)
• EER: 10.0
• Features: Remote control, 3 cooling speeds, 2 fan speeds, 4-way airflow, washable filter
• Noise Level: 63 dB
• Price: Around $620

While slightly louder, the extra power makes it a great choice for open-concept living areas or master bedrooms.

Installation Tips and What to Expect

Installing a through-the-wall air conditioner with heat isn’t as simple as plugging in a window unit—but with the right preparation, it’s totally doable. Here’s what you need to know.

Assess Your Wall and Space

Before buying, measure the wall where you plan to install the unit. Most through-the-wall ACs require a wall opening of about 26–28 inches wide and 16–18 inches tall. Make sure the wall is exterior-facing and structurally sound—avoid load-bearing walls unless you consult a professional.

Also, check for obstructions like pipes, wires, or insulation. You’ll need at least 12–18 inches of clearance on the outside for proper airflow.

Choose the Right Location

Install the unit in a spot that allows even air distribution. Avoid placing it directly above furniture or electronics. For bedrooms, consider mounting it higher on the wall to direct airflow downward.

Pro tip: Install the unit slightly tilted (about 1/4 inch downward to the outside) to allow condensation to drain properly.

Hire a Professional or DIY?

While some handy homeowners can install a through-the-wall AC themselves, we recommend hiring a licensed HVAC technician—especially if you’re cutting into a wall or dealing with electrical wiring.

A professional can ensure the unit is level, sealed properly to prevent air leaks, and connected to a dedicated electrical circuit. Improper installation can lead to reduced efficiency, water damage, or even electrical hazards.

One user shared their experience: “I tried to install it myself and ended up with a drafty gap around the unit. Had to call a pro to fix it. Worth the extra cost for peace of mind.”

Electrical Requirements

Most through-the-wall units require a 230/208-volt electrical circuit—not the standard 120-volt outlet. This means you’ll likely need an electrician to install a dedicated circuit.

Check your unit’s specifications for amperage requirements. A 10,000 BTU model typically needs a 20-amp circuit, while larger units may require 30 amps.

Sealing and Insulation

After installation, seal the gaps around the wall sleeve with weatherproof caulk or foam insulation. This prevents drafts, pests, and moisture from entering your home.

Use a high-quality sealant rated for exterior use. Reapply every few years as needed.

Maintenance and Care for Long-Lasting Performance

Like any HVAC system, your through-the-wall air conditioner with heat needs regular maintenance to run efficiently and last longer. Here’s how to keep it in top shape.

Clean the Air Filter Monthly

The air filter traps dust and debris, but over time it gets clogged, reducing airflow and efficiency. Most models have a washable filter that you can rinse with water and let dry.

Set a monthly reminder to check and clean the filter—especially during peak usage seasons.

Inspect the Outdoor Unit

Twice a year, check the exterior portion of the unit for dirt, leaves, or debris. Use a garden hose to gently rinse the condenser coils. Avoid using a pressure washer, which can damage the fins.

Keep the area around the outdoor unit clear of plants, furniture, or other obstructions.

Check for Leaks and Drips

If you notice water pooling inside or outside the unit, it could indicate a clogged drain line or improper tilt. Clear any blockages and ensure the unit is properly angled for drainage.

Schedule Professional Servicing

Once a year, have a technician inspect the refrigerant levels, electrical connections, and overall performance. This can catch small issues before they become costly repairs.

A well-maintained unit can last 10–15 years—much longer than a window or portable AC.

Is a Through-the-Wall Air Conditioner with Heat Right for You?

Deciding whether to invest in a through-the-wall air conditioner with heat depends on your home, climate, and lifestyle. Here’s a quick checklist to help you decide:

• ✅ You live in a home without central HVAC or have a room that’s hard to heat/cool.
• ✅ You want year-round comfort without switching between multiple units.
• ✅ You’re okay with a permanent installation and potential upfront costs.
• ✅ You value energy efficiency and long-term savings.
• ✅ You prefer a clean, unobstructed window and quiet operation.

If you answered “yes” to most of these, a through-the-wall unit is likely a great fit.

However, if you’re renting and can’t modify the walls, or if you only need cooling (not heating), a high-quality window or portable AC might be a better short-term solution.

Final Thoughts: Comfort That Lasts All Year

A through-the-wall air conditioner with heat is more than just an appliance—it’s an investment in your comfort, health, and peace of mind. Whether you’re battling summer heatwaves or winter chills, these units deliver reliable, efficient climate control without the hassle of multiple devices.

From smart features and quiet operation to energy savings and improved air quality, the benefits are clear. And with our top picks—like the LG LW1019IVSM for tech lovers or the Frigidaire FHPW102AC1 for budget-conscious buyers—there’s a model for every need and lifestyle.

So if you’re tired of compromising on comfort, consider making the switch. With proper installation and care, a through-the-wall air conditioner with heat can keep you cozy and cool for years to come—no matter what the weather throws your way.

Frequently Asked Questions

What is a through-the-wall air conditioner with heat?

A through-the-wall air conditioner with heat is a self-contained HVAC unit installed in a wall sleeve, providing both cooling in summer and heating in winter. Unlike window units, they offer a permanent, weather-sealed solution for year-round climate control in apartments, rooms, or homes without central HVAC.

How does a through-the-wall AC with heat differ from a window unit?

Through-the-wall air conditioners with heat are built for permanent installation in a wall sleeve, offering better insulation and a sleeker appearance than window units. They also typically provide more powerful heating/cooling and quieter operation since the compressor is outside the living space.

Can a through-the-wall AC with heat replace my central heating system?

While a through-the-wall AC with heat can effectively heat individual rooms, it’s not designed to replace whole-house heating systems. It’s ideal for supplemental heating, sunrooms, or spaces where extending ductwork isn’t feasible.

Are through-the-wall air conditioners with heat energy efficient?

Yes, many modern units feature high EER (Energy Efficiency Ratio) ratings and programmable thermostats to minimize energy use. Look for ENERGY STAR® certified models with inverter technology for optimal efficiency in both cooling and heating modes.

What size through-the-wall AC with heat do I need?

Size depends on room square footage and insulation. For example, a 10,000 BTU unit covers ~450 sq ft for cooling, while heating capacity (measured in BTUs or watts) should match your climate’s demands. Always consult a sizing chart or HVAC professional.

Do through-the-wall AC units with heat require professional installation?

While DIY installation is possible with basic tools, hiring a professional ensures proper wall sleeve fit, electrical wiring (many require 240V circuits), and weatherproofing. Incorrect installation can lead to leaks, inefficiency, or safety hazards.