The best through the wall air conditioner with heat pump delivers year-round comfort by efficiently cooling in summer and heating in winter—all in a single, space-saving unit. Designed for permanent installation, these powerful systems offer reliable temperature control, energy efficiency, and quiet operation, making them ideal for apartments, additions, or rooms without ductwork. Upgrade to consistent climate control without the bulk of window units or the cost of central HVAC.

Key Takeaways

• Choose a heat pump model: Ensures efficient heating and cooling year-round.
• Prioritize energy efficiency: Look for high SEER and HSPF ratings to save on bills.
• Measure your wall sleeve: Confirm dimensions for a seamless fit and easy installation.
• Check noise levels: Opt for units under 60 dB for quieter operation.
• Smart features matter: Wi-Fi and app control enhance convenience and scheduling.
• Professional installation recommended: Ensures optimal performance and warranty validity.

Best Through the Wall Air Conditioner with Heat Pump for Year-Round Comfort

Imagine walking into your bedroom on a sweltering summer afternoon, only to be greeted by a cool, refreshing breeze. Now picture that same room staying cozy and warm during a chilly winter night—without needing a separate heater. That’s the magic of a through the wall air conditioner with heat pump. It’s not just an air conditioner; it’s a year-round climate control solution that keeps your space comfortable no matter the season.

I remember the first time I experienced one of these units in a friend’s apartment. I was visiting during a late autumn evening when the temperature had dropped unexpectedly. While I was bundled up in a sweater, they were lounging in a t-shirt, perfectly comfortable. When I asked how their room stayed so warm, they casually pointed to the sleek unit built into the wall. “It’s my AC and heater in one,” they said. That moment stuck with me. It wasn’t just convenient—it was smart. No more juggling space heaters, window units, or portable ACs that take up floor space and block windows. Just one sleek, built-in system doing double duty.

Whether you live in a studio apartment, a sunroom, a garage conversion, or a room without central HVAC, a through-the-wall air conditioner with heat pump can be a game-changer. These units are designed to fit snugly into a wall sleeve, providing efficient cooling in summer and heating in winter—all while staying out of the way. And with energy-efficient heat pump technology, they’re not just convenient; they’re cost-effective too. In this guide, we’ll dive deep into what makes these units so valuable, how to choose the right one, and what to expect in terms of performance, installation, and long-term savings.

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

A through the wall air conditioner with heat pump is a self-contained HVAC unit installed directly into an exterior wall. Unlike window units that sit in a window frame, these are built into the wall, offering a cleaner, more permanent solution. The “heat pump” part is what sets it apart from traditional ACs. While standard air conditioners only cool, a heat pump can reverse its cycle to provide heat—making it a true two-in-one system.

How Does a Heat Pump Work?

You might be wondering: how can one machine both cool and heat? The secret lies in the refrigeration cycle. In cooling mode, the unit pulls warm air from inside your room, passes it over cold evaporator coils, and expels the heat outside. In heating mode, it reverses this process—extracting heat from the outside air (even when it’s cold) and transferring it indoors. Modern heat pumps are remarkably efficient, even in temperatures as low as 30°F, thanks to advanced compressor technology.

Key Components of a Through-the-Wall Unit

• Compressor: The heart of the system, responsible for circulating refrigerant.
• Evaporator and Condenser Coils: These transfer heat between the indoor and outdoor air.
• Fan Motors: Move air across the coils and into the room.
• Thermostat: Allows you to set and maintain your desired temperature.
• Wall Sleeve: A metal frame installed in the wall that holds the unit securely.

These components work together seamlessly to deliver consistent comfort. Because the unit is sealed within the wall, it’s quieter than window units and doesn’t obstruct your view or natural light. Plus, it’s protected from weather and vandalism, which can extend its lifespan.

Why Choose a Through-the-Wall Unit Over Other Options?

Let’s compare. Window air conditioners are affordable and easy to install, but they’re noisy, block windows, and can be a security risk. Portable ACs offer flexibility but are less efficient and take up floor space. Central HVAC is great for whole-house comfort but isn’t practical for single rooms or spaces without ductwork.

A through-the-wall unit strikes the perfect balance. It’s more permanent than a window unit but far less invasive than installing ductwork. It’s quieter, more energy-efficient, and provides both heating and cooling. For rooms like home offices, sunrooms, garages, or older homes without central air, it’s often the best solution.

Benefits of a Through the Wall Air Conditioner with Heat Pump

When you invest in a through the wall air conditioner with heat pump, you’re not just buying an appliance—you’re upgrading your home’s comfort system. The benefits go beyond convenience. Let’s break down why these units are worth considering.

Year-Round Climate Control

The most obvious advantage? You get both cooling and heating from a single unit. No more switching between a window AC in summer and a space heater in winter. With a heat pump, your room stays comfortable all year long. Whether it’s 95°F in July or 25°F in January, your unit adjusts automatically to maintain your ideal temperature.

Energy Efficiency and Cost Savings

Heat pumps are among the most energy-efficient heating options available. According to the U.S. Department of Energy, heat pumps can reduce electricity use for heating by up to 50% compared to electric resistance heating (like baseboard heaters). Because they move heat rather than generate it, they use less energy to produce the same amount of warmth.

For example, a 12,000 BTU through-the-wall unit with a heat pump might use around 1,200 watts in cooling mode and slightly less in heating mode. Compare that to a 1,500-watt space heater, and the savings become clear. Over time, this efficiency translates to lower utility bills—especially in mild to moderate climates.

Space-Saving and Aesthetic Appeal

Unlike bulky window units that stick out and block views, through-the-wall units are flush with the wall. They don’t take up floor space like portable ACs, and they don’t require you to remove furniture or decorations. Once installed, they’re nearly invisible—just a sleek faceplate with vents and controls.

This makes them ideal for rooms where aesthetics matter, like bedrooms, living rooms, or home offices. Plus, because they’re built into the wall, they’re less likely to be damaged or tampered with.

Improved Air Quality and Filtration

Many modern through-the-wall units come with advanced filtration systems. These can include washable filters, antimicrobial coatings, and even HEPA-like filters that capture dust, pollen, pet dander, and other allergens. Some models also feature dehumidification modes, which help reduce mold and mildew growth in humid climates.

For people with allergies or respiratory issues, this can make a big difference in indoor air quality. Regular filter maintenance ensures the system runs efficiently and keeps the air clean.

Quiet Operation

One of the biggest complaints about window units is noise. Through-the-wall units are generally quieter because the compressor and fan are housed within the wall, away from the living space. Many models operate at under 50 decibels—about the sound level of a quiet conversation.

This makes them perfect for bedrooms, nurseries, or study areas where silence is golden. You’ll stay cool and comfortable without the constant hum disrupting your sleep or focus.

How to Choose the Right Through the Wall Air Conditioner with Heat Pump

Not all through-the-wall units are created equal. Choosing the right one depends on several factors, including room size, climate, energy efficiency, and features. Let’s walk through what to look for so you can make an informed decision.

Determine the Right BTU Size

BTU (British Thermal Unit) measures cooling and heating capacity. Too small, and the unit will struggle to keep up. Too large, and it will cycle on and off too frequently, wasting energy and reducing comfort.

As a general rule:

• 100–300 sq. ft.: 5,000–6,000 BTU
• 300–500 sq. ft.: 7,000–8,000 BTU
• 500–700 sq. ft.: 10,000–12,000 BTU
• 700–1,000 sq. ft.: 14,000–18,000 BTU

But don’t stop there. Consider factors like ceiling height, insulation, sun exposure, and the number of windows. A south-facing room with large windows will need more BTUs than a shaded, well-insulated space of the same size.

Check the Energy Efficiency Rating (EER and CEER)

EER (Energy Efficiency Ratio) and CEER (Combined Energy Efficiency Ratio) measure how efficiently a unit uses electricity. The higher the number, the more efficient the unit. Look for models with an EER of 10 or higher—these will save you money on energy bills.

For example, a 12,000 BTU unit with an EER of 10 uses about 1,200 watts. One with an EER of 12 uses only 1,000 watts for the same output. Over a summer, that difference can add up to significant savings.

Look for Key Features

Modern units come with a range of features that enhance comfort and convenience:

• Remote Control: Adjust settings from across the room.
• Programmable Thermostat: Set schedules to save energy when you’re away.
• Sleep Mode: Gradually adjusts temperature for better rest.
• Fan-Only Mode: Circulates air without cooling or heating.
• Dehumidifier Mode: Reduces humidity for comfort in muggy weather.
• Smart Connectivity: Some models work with Wi-Fi and apps for remote control.

Think about which features matter most to you. If you’re often away during the day, a programmable thermostat can help you save energy. If you live in a humid area, dehumidification is a must.

Consider Installation Requirements

Before buying, make sure your wall can accommodate a through-the-wall unit. You’ll need an exterior wall with enough space for the sleeve (typically 14–16 inches wide and 14–16 inches tall). The wall should also be structurally sound and free of obstructions like pipes or electrical wiring.

Installation usually requires cutting a hole in the wall and securing the sleeve. While some DIYers can handle this, it’s often best to hire a professional—especially if you’re not experienced with electrical or structural work. Proper installation ensures safety, efficiency, and a weather-tight seal.

Brand and Warranty

Stick with reputable brands like Frigidaire, LG, Friedrich, or Amana. These companies offer reliable performance, good customer support, and solid warranties—typically 1–2 years on parts and labor, with some offering extended coverage on compressors.

Read reviews and check ratings on sites like Energy Star, Consumer Reports, or Amazon. Real user feedback can reveal common issues or standout strengths.

Top Models of Through the Wall Air Conditioners with Heat Pump

To help you narrow down your options, here are some of the best through the wall air conditioners with heat pump on the market today. These models balance performance, efficiency, and value.

Frigidaire FHPW102AC1 – 10,000 BTU

This Energy Star-certified unit is a top pick for medium-sized rooms. It features a 10,000 BTU cooling and heating capacity, making it ideal for spaces up to 450 sq. ft. The unit has a high EER of 11.5, ensuring energy efficiency. It includes a remote control, programmable timer, and three fan speeds. The washable filter is easy to maintain, and the quiet operation (as low as 49 dB) makes it great for bedrooms.

LG LW1216HR – 12,000 BTU

LG’s 12,000 BTU model is perfect for larger rooms up to 550 sq. ft. It boasts an EER of 11.3 and includes smart features like Wi-Fi connectivity and compatibility with the LG ThinQ app. You can control it from your phone, set schedules, and even receive filter change alerts. The unit also has a 24-hour timer, sleep mode, and a sleek design that blends into any decor.

Friedrich UE12D10 – 12,000 BTU

Known for durability and performance, Friedrich’s UE12D10 is a commercial-grade unit built for long-term use. It has a powerful 12,000 BTU output and an EER of 11.2. The unit features a rotary compressor for quieter operation and a corrosion-resistant coating for outdoor durability. It’s a bit pricier, but ideal for high-traffic areas or rental properties.

Amana AEW12DLS – 12,000 BTU

Amana offers solid performance at a budget-friendly price. This 12,000 BTU unit has an EER of 10.8 and includes basic features like a remote, timer, and three cooling speeds. It’s a no-frills option that gets the job done without breaking the bank. Great for garages, workshops, or secondary rooms.

Comparison Table: Top Through the Wall Units with Heat Pump

Model	BTU	EER	Key Features	Best For
Frigidaire FHPW102AC1	10,000	11.5	Remote, timer, quiet operation	Bedrooms, small apartments
LG LW1216HR	12,000	11.3	Wi-Fi, app control, smart features	Tech-savvy users, larger rooms
Friedrich UE12D10	12,000	11.2	Durable, rotary compressor, corrosion-resistant	Commercial use, high-traffic areas
Amana AEW12DLS	12,000	10.8	Affordable, reliable, basic features	Budget buyers, garages, workshops

Installation and Maintenance Tips

Installing a through-the-wall air conditioner with heat pump isn’t as simple as plugging in a window unit—but it’s not rocket science either. With the right preparation and care, you can enjoy years of reliable performance.

Professional vs. DIY Installation

While some homeowners tackle installation themselves, it’s often safer and more efficient to hire a licensed HVAC technician. They’ll ensure the wall sleeve is properly sized, the electrical connections are safe, and the unit is level and sealed to prevent air leaks.

If you do go the DIY route, follow the manufacturer’s instructions carefully. You’ll need tools like a reciprocating saw, level, drill, and caulk gun. Always turn off power at the breaker before working on electrical components.

Proper Placement and Ventilation

The unit should be installed on an exterior wall with at least 18 inches of clearance on all sides. Avoid placing it near heat sources like ovens or direct sunlight, which can affect performance. Ensure the outdoor side has good airflow—don’t block it with plants or furniture.

Regular Maintenance for Longevity

To keep your unit running smoothly:

• Clean or replace the air filter every 1–2 months during peak use.
• Wipe down the exterior with a damp cloth to remove dust and debris.
• Check the outdoor vents for blockages like leaves or dirt.
• Inspect the seal around the wall sleeve and re-caulk if needed.
• Schedule a professional tune-up every 1–2 years.

Neglecting maintenance can lead to reduced efficiency, higher energy bills, and premature failure. A little care goes a long way.

Conclusion: Is a Through the Wall Air Conditioner with Heat Pump Right for You?

After exploring the features, benefits, and options, it’s clear that a through the wall air conditioner with heat pump is more than just a convenience—it’s a smart investment in comfort, efficiency, and peace of mind. Whether you’re cooling a sunroom in summer or heating a garage in winter, these units deliver reliable performance without the clutter or noise of traditional systems.

They’re ideal for anyone who wants year-round climate control in a single room or space without central HVAC. From energy savings to improved air quality, the advantages are hard to ignore. And with models ranging from budget-friendly to high-tech, there’s an option for nearly every need and budget.

So, is it right for you? If you value quiet operation, space efficiency, and the ability to stay comfortable in any season, the answer is likely yes. Take the time to assess your room size, climate, and must-have features. Read reviews, compare models, and consider professional installation. With the right unit, you’ll enjoy cool summers, warm winters, and a home that truly feels like a sanctuary—all from one sleek, built-in system.

Frequently Asked Questions

What is the best through the wall air conditioner with heat pump for energy efficiency?

The best through the wall air conditioner with heat pump for energy efficiency typically has a high SEER (Seasonal Energy Efficiency Ratio) and HSPF (Heating Seasonal Performance Factor) rating. Models like the Frigidaire FHPC102AC1 or GE AJCQ08ACF are top contenders, offering energy-saving features like programmable thermostats and eco modes.

Can a through the wall air conditioner with heat pump replace my furnace?

Yes, a through the wall air conditioner with heat pump can replace a furnace in moderate climates, as it provides both heating and cooling. However, in extremely cold regions, a supplemental heating source may be needed for optimal performance during winter months.

How do I install a through the wall AC with heat pump?

Installation involves cutting a hole in the wall, securing the unit in a sleeve, and connecting electrical wiring and drainage. Professional installation is recommended to ensure proper sealing, electrical safety, and compliance with local building codes.

Are through the wall heat pump AC units noisy?

Modern through the wall air conditioner with heat pump units are designed with noise-reduction technology, operating at around 50-60 decibels. Look for models with “quiet mode” or “low-noise” features for minimal disruption to your home environment.

What size through the wall air conditioner with heat pump do I need?

The size depends on the room’s square footage and insulation. For example, a 10,000 BTU unit covers up to 450 sq. ft., while a 14,000 BTU unit suits larger spaces. Use a BTU calculator or consult an HVAC expert for precise sizing.

Do through the wall AC units with heat pumps require maintenance?

Yes, regular maintenance like cleaning or replacing air filters every 1-3 months and checking refrigerant levels is essential. Annual professional servicing ensures optimal efficiency and extends the lifespan of your through the wall air conditioner with heat pump.