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10 Best Thru Wall Ac Units 2025 in the United States

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Our Top Picks

#1

Winner

BLACK+DECKER Window or Through The Wall Air Conditioner 18000 BTU, AC Window Unit Cools Up to 1000 Square Feet, Window AC Unit with Remote Control, 3 Cooling Speeds and Fan Only, BD18WT6, White

Rating
10.0
Chosen by1,164
Cooling Capacity (BTUs)
Noise Level
Installation Requirements

Most important from
1498 reviews

Cooling Capacity (BTUs)
Delivers powerful cooling that comfortably chills large spaces, even during intense heat.
Noise Level
The unit is noticeably loud but the cooling comfort it provides outweighs the noise.
Installation Requirements
Installation includes foam and weatherstripping that help insulate and improve efficiency.
Additional Features
Offers excellent value for the price, making it a smart purchase for those needing strong cooling.

The BLACK+DECKER 18,000 BTU thru-wall/window air conditioner is a solid choice for cooling larger rooms or open living areas up to 1,000 square feet. Its cooling power is strong enough to handle bigger spaces comfortably, and it offers multiple fan speeds including an auto mode to adjust cooling based on room conditions. The energy efficiency ratio of 11.8 is decent, meaning it won’t be overly costly to run compared to less efficient units. Noise levels at 54.5 decibels are moderate—noticeable but generally not disruptive for most living spaces.

Installation is versatile since it can be fitted in a window or through a wall using the included sleeve and hardware, though professional assistance is recommended for wall installations to ensure safety and proper fit. Additional features such as a full-function remote, a 24-hour timer, sleep mode, and energy saver mode add convenience and help tailor the unit’s operation to your preferences.

It requires 230 volts, so it’s best suited for homes with compatible electrical wiring. Also, while the unit includes mounting hardware, the relatively heavy weight (about 117 pounds) might make installation more challenging for some users. The build is straightforward, but the warranty is somewhat limited with one year on labor and parts and five years on the compressor only. For those seeking a reliable and efficient AC for medium to large rooms and who don’t mind professional help for wall installation, this BLACK+DECKER model represents a worthy option.

Rating
10.0
Chosen by1,164
Cooling Capacity (BTUs)
Noise Level
Installation Requirements

Most important from
1498 reviews

Cooling Capacity (BTUs)
Delivers powerful cooling that comfortably chills large spaces, even during intense heat.
Noise Level
The unit is noticeably loud but the cooling comfort it provides outweighs the noise.
Installation Requirements
Installation includes foam and weatherstripping that help insulate and improve efficiency.
Additional Features
Offers excellent value for the price, making it a smart purchase for those needing strong cooling.
#2

Keystone 14,000 BTU Wall Mounted Air Conditioner with Supplemental Heat and Dehumidifier Function, 230V, Wall AC for Living Room and Large Rooms up to 700 Sq.Ft., Quiet, High Efficiency AC with Remote

Rating
10.0
Energy Efficiency Ratio (EER)
Noise Level
Installation Requirements

Most important from
21 reviews

Energy Efficiency Ratio (EER)
Energy Saver mode is effective, helping to manage electricity consumption.
Noise Level
The unit isn't excessively loud, with noise levels comparable to most large in-wall sleeve units.
Installation Requirements
Installation is straightforward, especially if you have an existing wall sleeve.
Additional Features
The Keystone air conditioner works brilliantly, cooling very nicely and offering plenty of features.

The Keystone 14,000 BTU Wall Mounted Air Conditioner is a solid choice for cooling large spaces up to 700 sq. ft. It's versatile, offering not just cooling but also supplemental heating, a dehumidifier function, and fan circulation, making it suitable for year-round use. The 14,000 BTU cooling capacity is powerful, and the 10,600 BTU heating capacity is useful during cooler months, though it's meant as a supplementary heat source, not a primary one. The unit operates best when outside temperatures range between 23 and 76 degrees for heating functions.

It includes a smart remote control that provides convenient temperature monitoring and adjustment, enhancing user comfort. Additionally, modes like 'Energy Saver' and 'Sleep' help reduce electricity consumption, easing your energy bills. However, its Seasonal Energy Efficiency Ratio (SEER) of 9.3 indicates it’s not the most energy-efficient option on the market, and it doesn’t have Energy Star certification. The noise level at 61.5 dB is moderate; not extremely quiet but not excessively loud either.

Installation requires a special 230-volt/20-amp electrical outlet, which might be a consideration if your home isn’t already equipped with one. The unit’s design is space-saving, keeping your windows free, and it comes with a trim kit for easy installation. With a 1-year warranty on parts and labor and an additional 4 years for the sealed system, the product offers a decent assurance of durability. If you need a powerful, multifunctional thru-wall unit and can accommodate its installation requirements, this Keystone model is worth considering.

Rating
10.0
Energy Efficiency Ratio (EER)
Noise Level
Installation Requirements

Most important from
21 reviews

Energy Efficiency Ratio (EER)
Energy Saver mode is effective, helping to manage electricity consumption.
Noise Level
The unit isn't excessively loud, with noise levels comparable to most large in-wall sleeve units.
Installation Requirements
Installation is straightforward, especially if you have an existing wall sleeve.
Additional Features
The Keystone air conditioner works brilliantly, cooling very nicely and offering plenty of features.
#3

COSTWAY 12000BTU Mini Split Air Conditioner& Heater, 20 SEER2 115V Wall-Mounted Ductless AC Unit Cools Rooms up to 750 Sq. Ft, Energy Efficient Inverter AC with Heat Pump (Blast Series)

Rating
9.8
Noise Level
Installation Requirements

Most important from
1204 reviews

Noise Level
Easy to install, this air conditioner and heater boasts great quality and build, with plenty of power and minimal noise.
Installation Requirements
Installation instructions seem clear, though professional installation might be preferred for those without HVAC experience.

The COSTWAY 12000BTU Mini Split Air Conditioner & Heater is a versatile unit designed for both cooling and heating spaces up to 750 square feet. With a high Seasonal Energy Efficiency Ratio (SEER) of 20.0, it promises excellent energy efficiency, which can lead to lower utility bills. The unit operates relatively quietly at 51 dB, which is generally considered acceptable for residential use, ensuring it won't disrupt your peace and quiet significantly.

The included remote control and multiple modes (auto, cool, dry, heat, and fan) provide flexibility and convenience for year-round comfort. The self-cleaning feature at high temperatures and auto-defrost function contribute to maintaining air quality and system longevity. However, installation must be done by a licensed HVAC installer, which could add to the initial cost and complexity. Additionally, the product uses R32 refrigerant, which is more environmentally friendly but might require specific inquiries about its availability for future maintenance.

With a robust warranty covering parts for 5 years and the compressor for 8 years, this unit offers long-term reliability. Potential buyers should consider the installation requirements and ensure compatibility with their existing setup. This unit is ideal for those looking for an energy-efficient, multi-functional air conditioning solution for medium-sized rooms.

Rating
9.8
Noise Level
Installation Requirements

Most important from
1204 reviews

Noise Level
Easy to install, this air conditioner and heater boasts great quality and build, with plenty of power and minimal noise.
Installation Requirements
Installation instructions seem clear, though professional installation might be preferred for those without HVAC experience.

Buying Guide for the Best Thru Wall Ac Units

When choosing a thru-wall air conditioning unit, it's important to consider several key specifications to ensure you select the best fit for your needs. Thru-wall AC units are designed to be installed through an exterior wall, providing a permanent cooling solution for a specific room or area. Understanding the key specs will help you make an informed decision and ensure you get the most efficient and effective unit for your space.
Cooling Capacity (BTUs)Cooling capacity, measured in British Thermal Units (BTUs), indicates the amount of heat the unit can remove from a room per hour. This spec is crucial because it determines how effectively the unit can cool your space. Units with lower BTUs (5,000-8,000) are suitable for small rooms up to 350 square feet, while medium-sized rooms (350-550 square feet) require units with 8,000-12,000 BTUs. Larger rooms (550-1,000 square feet) need units with 12,000-18,000 BTUs. To pick the right one, match the BTU rating to the size of the room you want to cool.
Energy Efficiency Ratio (EER)The Energy Efficiency Ratio (EER) measures the unit's cooling efficiency by comparing the BTUs to the power consumption in watts. A higher EER indicates a more energy-efficient unit, which can save you money on electricity bills. EER ratings typically range from 8 to 12. For better energy savings, look for units with an EER of 10 or higher. Consider your usage patterns and energy costs when choosing the right EER for your needs.
Noise LevelNoise level, measured in decibels (dB), indicates how loud the unit will be when operating. This is important for maintaining a comfortable environment, especially in bedrooms or living areas. Units with noise levels below 50 dB are considered quiet, while those between 50-60 dB are moderate. Units above 60 dB may be too loud for some users. Choose a unit with a noise level that suits your comfort preferences and the room's purpose.
Installation RequirementsThru-wall AC units require a specific wall opening for installation, which can vary in size. It's important to measure the wall space and ensure it can accommodate the unit's dimensions. Some units come with a sleeve for easier installation, while others may require additional framing. Consider the installation complexity and whether you need professional help. Ensure the unit fits your wall space and that you have the necessary tools and skills for installation.
Additional FeaturesAdditional features can enhance the functionality and convenience of your thru-wall AC unit. Common features include remote control, programmable thermostat, sleep mode, and energy-saving mode. These features can improve comfort and efficiency. Think about which features are important to you, such as ease of use, energy savings, or specific cooling modes, and choose a unit that offers the features that best meet your needs.

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