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10 Best Window Air Conditioning Units 2025 in the United States

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Our Top Picks

#1

Winner

Midea 12,000 BTU Smart Inverter Air Conditioner Window Unit with Heat and Dehumidifier – Cools up to 550 Sq. Ft., Energy Star Rated, Quiet Operation, Electronic Controls, Remote Control, White

Rating
10.0
Chosen by1,313
Cooling Capacity (BTUs)
Energy Efficiency Ratio (EER)
Noise Level

Most important from
18049 reviews

Cooling Capacity (BTUs)
While the heating function doesn’t work below 41°F, the cooling capability remains excellent, even in high temperatures.
Energy Efficiency Ratio (EER)
The Midea air conditioner is extremely efficient, using no more than 400 watts even at max cooling and heating settings.
Noise Level
This unit is impressively quiet; you barely know it’s on.
Installation and Size
Installation is a breeze, fitting perfectly in various window sizes without the need for making holes or sealing refrigerant lines.

The Midea MAW12HV1CWT EasyCool Smart Inverter Air Conditioner Window Unit is a versatile option for those looking for both cooling and heating solutions in one device. With a cooling capacity of 12,000 BTUs, it is well-suited for larger rooms up to 550 square feet. The unit also features a supplemental heating option; however, it's important to note that the heat pump function is not effective when the outside temperature drops below 41°F. This makes it a multi-season solution, though it may not cover all year-round needs in colder climates.

The energy efficiency of this model is commendable, with a SEER of 13.3 and an Energy Star certification, promising up to 35% energy savings compared to the Energy Conservation Standard. This can translate into noticeable savings on electricity bills over time. Noise levels are impressively low, operating at around 45 dBA, which is less intrusive and conducive for quiet environments like bedrooms or offices. Installation is designed to be straightforward for double-hung windows with specific measurements, and an installation kit is included for convenience. The air conditioner's dimensions are relatively compact, making it a good fit for a variety of window sizes.

Additional features enhance usability, including a user-friendly LED display, multiple modes and speed settings, a 24-hour timer, and eco mode. The unit also supports smart home integration, allowing control via the SmartHome App, Alexa, or Google Assistant. One potential drawback is the weight of the unit, at 58 pounds, which might require assistance during installation. Furthermore, while the noise level is low, some users might find the 58 dB rating at maximum operation slightly noticeable. The Midea MAW12HV1CWT is a highly efficient, quiet, and smart-capable window AC unit, best suited for those needing a powerful cooling solution with the added benefit of supplemental heating for moderately cold conditions.

Rating
10.0
Chosen by1,313
Cooling Capacity (BTUs)
Energy Efficiency Ratio (EER)
Noise Level

Most important from
18049 reviews

Cooling Capacity (BTUs)
While the heating function doesn’t work below 41°F, the cooling capability remains excellent, even in high temperatures.
Energy Efficiency Ratio (EER)
The Midea air conditioner is extremely efficient, using no more than 400 watts even at max cooling and heating settings.
Noise Level
This unit is impressively quiet; you barely know it’s on.
Installation and Size
Installation is a breeze, fitting perfectly in various window sizes without the need for making holes or sealing refrigerant lines.
#2

LG 10000 BTU Window Air Conditioners [2023 New] Remote Control WiFi App Ultra-Quiet Washable Filter Cools 450Sq.Ft for Medium & Large Room AC Unit air conditioner Easy Install White LW1017ERSM1

Rating
9.4
Cooling Capacity (BTUs)
Energy Efficiency Ratio (EER)
Noise Level

Most important from
17604 reviews

Cooling Capacity (BTUs)
The unit performs very well with solid cooling power and quiet operation, making it suitable for larger rooms up to 550 square feet.
Energy Efficiency Ratio (EER)
The energy-saving mode intelligently cycles the fan and compressor, providing quiet periods and efficient temperature control without stale air buildup.
Noise Level
Noise levels are pleasantly low at around 52 decibels on low fan speed, comparable to a quiet box fan or the ambient sound in a motel room, making it suitable for sleeping environments.
Installation and Size
Despite its heavy weight and large size, the air conditioner fits tightly and seals well in standard windows, preventing drafts effectively.
Additional Features
The uniquely inclined cooling grill directs air upward toward the ceiling, preventing hot air pockets and enhancing overall room comfort compared to traditional 4-way directional vents.

The LG 12,000 BTU Smart Window Air Conditioner is designed to cool rooms up to 550 square feet, making it a solid choice for larger living rooms or kitchens. It offers 3 fan speeds and an Auto Cool mode, providing good control over airflow and temperature. A notable feature is its smart connectivity, which allows remote control through the LG ThinQ app and voice commands via Alexa and Google Assistant, adding convenience to adjusting settings.

This unit operates quietly at 52 decibels on low, suitable for most home environments. Installation is typical for window units, fitting standard windows, though it weighs 81 pounds, which may require some effort to set up. The SEER rating is 12, indicating moderate energy efficiency, and it does not have Energy Star certification. Additional features include a 24-hour timer, auto restart after power outages, and a filter reminder for user convenience.

The one-year warranty provides standard coverage. This LG model offers reliable and feature-rich cooling with smart control options, especially suited for larger rooms.

Rating
9.4
Cooling Capacity (BTUs)
Energy Efficiency Ratio (EER)
Noise Level

Most important from
17604 reviews

Cooling Capacity (BTUs)
The unit performs very well with solid cooling power and quiet operation, making it suitable for larger rooms up to 550 square feet.
Energy Efficiency Ratio (EER)
The energy-saving mode intelligently cycles the fan and compressor, providing quiet periods and efficient temperature control without stale air buildup.
Noise Level
Noise levels are pleasantly low at around 52 decibels on low fan speed, comparable to a quiet box fan or the ambient sound in a motel room, making it suitable for sleeping environments.
Installation and Size
Despite its heavy weight and large size, the air conditioner fits tightly and seals well in standard windows, preventing drafts effectively.
Additional Features
The uniquely inclined cooling grill directs air upward toward the ceiling, preventing hot air pockets and enhancing overall room comfort compared to traditional 4-way directional vents.
#3

LG 18,000 BTU Window Air Conditioner with Heat, 230/208V, Cools 1,000 Sq.Ft. for Bedroom, Living Room, Basement, Apartment, with Remote, 2 Speeds, 24-Hour Timer, White

Rating
9.1
Cooling Capacity (BTUs)
Energy Efficiency Ratio (EER)
Noise Level

Most important from
1363 reviews

Cooling Capacity (BTUs)
The unit delivers impressive dual functionality, switching effortlessly between heating and cooling to keep a 350 sq ft space comfortable in minutes.
Energy Efficiency Ratio (EER)
Its energy consumption is remarkably low, with the cooling side using just 575 watts, making it ideal for solar power setups and off-grid living.
Noise Level
Quiet operation is a notable bonus, adding to the overall comfort without disruptive noise.
Installation and Size
Installation considerations include the need for proper electrical setup, especially when integrating with solar or generator power to avoid interference.
Additional Features
Maintenance is straightforward thanks to the easy-access washable filter and helpful reminder light.

The LG 18,000 BTU Window Air Conditioner is a solid choice for cooling spaces around 1,000 square feet, such as bedrooms, living rooms, or apartments. Its cooling power is strong enough to keep medium-sized rooms comfortable. One handy feature is the built-in heater, so you can use it year-round, which adds value if you need supplemental warmth during colder months. It operates on a 230/208V power supply, which is less common in typical homes and may require special installation or an electrician to set up properly.

In terms of energy efficiency, the unit has a SEER rating of 2.8, which is fairly standard but not the most efficient option available, so it might use more electricity compared to newer or higher-rated models. The noise level is about 61.7 dB, which is noticeable but typical for units this size; it may be a bit loud for very quiet spaces or light sleepers. Installation is manageable with the included kit, but the size is quite large (about 30.5 x 25.5 x 16.8 inches), so you’ll need an appropriate window space.

Additional conveniences include a remote control, digital panel, two fan speeds, 4-way air deflection for better airflow, and a 24-hour timer. The auto-restart feature is useful if you experience power outages, as it automatically powers the unit back on. Maintenance is straightforward with a washable filter and a reminder light to know when cleaning is needed. This LG window AC unit fits well for those seeking reliable cooling and heating in medium-sized rooms, with easy controls and useful extras, though the electrical requirements and moderate noise level should be considered before deciding.

Rating
9.1
Cooling Capacity (BTUs)
Energy Efficiency Ratio (EER)
Noise Level

Most important from
1363 reviews

Cooling Capacity (BTUs)
The unit delivers impressive dual functionality, switching effortlessly between heating and cooling to keep a 350 sq ft space comfortable in minutes.
Energy Efficiency Ratio (EER)
Its energy consumption is remarkably low, with the cooling side using just 575 watts, making it ideal for solar power setups and off-grid living.
Noise Level
Quiet operation is a notable bonus, adding to the overall comfort without disruptive noise.
Installation and Size
Installation considerations include the need for proper electrical setup, especially when integrating with solar or generator power to avoid interference.
Additional Features
Maintenance is straightforward thanks to the easy-access washable filter and helpful reminder light.

Buying Guide for the Best Window Air Conditioning Units

Choosing the right window air conditioning unit can make a significant difference in your comfort during hot weather. It's important to consider various factors to ensure you get a unit that meets your needs efficiently. Here are some key specifications to look at when selecting a window air conditioning unit.
Cooling Capacity (BTUs)BTU stands for British Thermal Unit, and it measures the cooling power of the air conditioner. The higher the BTU, the more cooling power the unit has. It's important to match the BTU rating to the size of the room you want to cool. For small rooms (up to 150 square feet), a unit with 5,000-6,000 BTUs is sufficient. Medium-sized rooms (150-300 square feet) typically need 7,000-8,000 BTUs, while larger rooms (300-450 square feet) may require 10,000-12,000 BTUs. Choosing the right BTU ensures efficient cooling without wasting energy.
Energy Efficiency Ratio (EER)The Energy Efficiency Ratio (EER) measures how efficiently the air conditioner uses energy. A higher EER means better energy efficiency, which can lead to lower electricity bills. EER is calculated by dividing the BTU rating by the unit's wattage. Look for units with an EER of 10 or higher for optimal efficiency. If you plan to use the air conditioner frequently, investing in a unit with a high EER can save you money in the long run.
Noise LevelNoise level is an important consideration, especially if the unit will be installed in a bedroom or living area. Noise levels are measured in decibels (dB). Units with lower dB ratings are quieter. Typically, air conditioners range from 50 to 60 dB. If you are sensitive to noise or need a quiet environment, look for units with lower dB ratings. Reading user reviews can also give you an idea of the noise level in real-world use.
Installation and SizeWindow air conditioners come in various sizes, and it's crucial to ensure the unit fits your window. Measure your window dimensions before purchasing to avoid compatibility issues. Additionally, consider the ease of installation. Some units come with installation kits and clear instructions, making the process simpler. If you're not comfortable with DIY installation, you might want to consider professional installation services.
Additional FeaturesModern window air conditioners often come with additional features that can enhance convenience and comfort. Features like remote control, programmable timers, sleep modes, and Wi-Fi connectivity can make operation easier and more efficient. Think about which features are important to you and how they can improve your experience. For example, a programmable timer can help you save energy by automatically turning the unit off when it's not needed.

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