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10 Best Ac Window Units 2025 in the United States

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Our technology thoroughly searches through the online shopping world, reviewing hundreds of sites. We then process and analyze this information, updating in real-time to bring you the latest top-rated products. This way, you always get the best and most current options available.

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Our Top Picks

#1

Winner

Frigidaire 6,000 BTU Window Air Conditioner with Remote Control, Cools Up to 250 Sq. Ft., Quiet Operation, Eco Mode, 3 Fan Speeds, Auto Restart, White

Rating
9.9
Chosen by1,337
Cooling Capacity (BTUs)
Noise Level
Installation and Size

Most important from
17166 reviews

Cooling Capacity (BTUs)
Delivers strong cooling power for small rooms, efficiently lowering temperatures even during heatwaves.
Noise Level
Operates quietly enough to sleep through, producing a soothing white noise rather than disruptive sounds.
Installation and Size
Light enough for one person to handle, but having a helper for installation is recommended.
Additional Features
The long power cord adds flexibility in placement and convenience.

The Frigidaire 6,000 BTU window air conditioner is designed to cool small spaces up to 250 square feet, making it a good fit for bedrooms, offices, or compact living areas. Its cooling capacity is suitable for such rooms, providing customizable comfort with three fan speeds and 6-way airflow direction to help circulate cool air efficiently. The noise level is reasonably low at around 51 dB, which is quiet enough for nighttime use without being disruptive.

Although it is not Energy Star certified, the unit has an Energy Efficiency Ratio (EER) implied by its SEER of 11, which is average but not outstanding for energy savings. You can still benefit from Eco Mode and Sleep Mode features that help reduce power consumption when full cooling is unnecessary. Installation is straightforward for a window unit of this size (approximately 13x16x12 inches), and it comes with a window kit included, though the weight is on the heavier side at over 38 pounds.

Additional conveniences include a remote control, a washable dust filter with a reminder light for maintenance, a 24-hour timer, and a Dry Mode to reduce humidity. The unit also offers an auto-restart function after power outages, which adds to ease of use. The 1-year manufacturer warranty indicates reliable performance. This Frigidaire model is a solid choice for anyone needing a quiet, customizable window AC for a small room, but if energy efficiency is a top priority, there may be more efficient alternatives available.

Rating
9.9
Chosen by1,337
Cooling Capacity (BTUs)
Noise Level
Installation and Size

Most important from
17166 reviews

Cooling Capacity (BTUs)
Delivers strong cooling power for small rooms, efficiently lowering temperatures even during heatwaves.
Noise Level
Operates quietly enough to sleep through, producing a soothing white noise rather than disruptive sounds.
Installation and Size
Light enough for one person to handle, but having a helper for installation is recommended.
Additional Features
The long power cord adds flexibility in placement and convenience.
#2

Frigidaire 5,000 BTU Window-Mounted Air Conditioner, Cools Up to 250 Sq. Ft., Quiet Operation, Effortless Temperature Control, 2 Fan Speeds, Auto Restart, White

Rating
9.8
Cooling Capacity (BTUs)
Energy Efficiency Ratio (EER)
Noise Level

Most important from
17166 reviews

Cooling Capacity (BTUs)
Delivers impressive cooling power that quickly transforms a hot room into a comfortably cold space.
Energy Efficiency Ratio (EER)
Not Energy Star rated and has modest energy efficiency, which may lead to higher electricity costs over time.
Noise Level
Operates quietly enough to be barely noticeable, even quieter than a typical pedestal fan.
Installation and Size
The long power cord adds convenience, eliminating the need for extension cords.
Additional Features
The washable filter simplifies maintenance and helps keep the unit running efficiently.

The Frigidaire 5,000 BTU Window-Mounted Air Conditioner is designed for small rooms up to 250 square feet, making it a solid choice if you need to cool a bedroom, office, or similar-sized space. Its cooling capacity is suitable for these areas, and with two fan speeds plus effortless temperature control, it lets you maintain comfort without fuss. Noise-wise, it runs at about 52 dB, which is fairly quiet and should not disturb your daily activities or sleep.

Installation is made easy with adjustable side panels to fit most windows securely, and the long power cord helps avoid the hassle of extension cords. Maintenance is straightforward thanks to a washable filter that helps keep the unit running efficiently by trapping dust. However, the unit lacks an Energy Star rating and has a modest SEER of 11, so it may not be the most energy-efficient option on the market, potentially leading to higher electricity costs over time.

It also doesn’t include advanced features like smart controls or timers, focusing instead on simplicity and reliability. This Frigidaire model is a practical, easy-to-use window AC that fits well in small spaces and prioritizes quiet operation and straightforward maintenance, but it may not be the best pick if you want top energy savings or extra tech features.

Rating
9.8
Cooling Capacity (BTUs)
Energy Efficiency Ratio (EER)
Noise Level

Most important from
17166 reviews

Cooling Capacity (BTUs)
Delivers impressive cooling power that quickly transforms a hot room into a comfortably cold space.
Energy Efficiency Ratio (EER)
Not Energy Star rated and has modest energy efficiency, which may lead to higher electricity costs over time.
Noise Level
Operates quietly enough to be barely noticeable, even quieter than a typical pedestal fan.
Installation and Size
The long power cord adds convenience, eliminating the need for extension cords.
Additional Features
The washable filter simplifies maintenance and helps keep the unit running efficiently.
#3

LG 12,000 BTU Window Air Conditioner, 115V, Cools 550 Sq.Ft. for Bedroom, Living Room, Apartment, Quiet Operation, Electronic Control with Remote, 3 Cooling & Fan Speeds, Auto Restart, White

Rating
9.7
Cooling Capacity (BTUs
Energy Efficiency Ratio (EER)
Noise Level

Most important from
16797 reviews

Cooling Capacity (BTUs
The LG 12,000 BTU Window Air Conditioner performs very well, is relatively quiet, and offers great value for its price.
Energy Efficiency Ratio (EER)
The energy-saving mode is particularly appreciated, allowing the fan to shut off with the cooling compressor and coming back on in intervals to sample air temperature, preventing stagnation without excessive noise.
Noise Level
Noise levels are commendably low, with the unit operating at around 52 decibels, making it suitable for undisturbed sleep.
Installation and Size
Despite some issues with shipping and packaging, the unit is easy to install and seals well in the window frame.
Additional Features
The inclined cooling grill is a standout feature, effectively directing cool air to the ceiling and preventing hot air pockets.

The LG 12,000 BTU Window Air Conditioner is a solid choice for cooling medium-sized rooms up to 550 square feet, making it suitable for bedrooms, living rooms, or apartments. It operates quietly, with noise levels as low as 52 dB on the lowest setting, which is great for undisturbed sleep or work. The unit offers flexibility with its three cooling and fan speeds and comes with an auto cool feature, allowing you to customize your comfort.

The easy-to-use digital control panel and remote control enhance user convenience, and the 4-way air deflection ensures even cooling throughout the room. The added timer function is useful for creating a cooling schedule to help save on energy costs. However, the unit does not have an Energy Star certification, which might be a concern for energy-conscious users. It has an Energy Efficiency Ratio (EER) of 13, which is decent but not top of the line.

The included filter light reminder and washable filter are practical features that simplify maintenance. Installation is straightforward with the provided window installation kit. While it is not the most energy-efficient model on the market, its quiet operation, ease of use, and effective cooling performance make it a good option for many users.

Rating
9.7
Cooling Capacity (BTUs
Energy Efficiency Ratio (EER)
Noise Level

Most important from
16797 reviews

Cooling Capacity (BTUs
The LG 12,000 BTU Window Air Conditioner performs very well, is relatively quiet, and offers great value for its price.
Energy Efficiency Ratio (EER)
The energy-saving mode is particularly appreciated, allowing the fan to shut off with the cooling compressor and coming back on in intervals to sample air temperature, preventing stagnation without excessive noise.
Noise Level
Noise levels are commendably low, with the unit operating at around 52 decibels, making it suitable for undisturbed sleep.
Installation and Size
Despite some issues with shipping and packaging, the unit is easy to install and seals well in the window frame.
Additional Features
The inclined cooling grill is a standout feature, effectively directing cool air to the ceiling and preventing hot air pockets.

Buying Guide for the Best Ac Window Units

Choosing the right AC window unit can make a significant difference in your comfort during hot weather. The key is to find a unit that fits your specific needs and space. To do this, you need to understand the various specifications and features that window AC units offer. By knowing what to look for, you can make an informed decision that ensures you get the best performance and efficiency for your situation.
Cooling Capacity (BTUs)Cooling capacity, measured in British Thermal Units (BTUs), indicates how much heat an AC unit can remove from a room per hour. This 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 (100-350 sq. ft.), medium BTUs (8,000-12,000) for medium rooms (350-550 sq. ft.), and higher BTUs (12,000-18,000) for larger rooms (550-1,000 sq. ft.). To pick the right one, match the BTU rating to the size of the room you want to cool. If the unit is too powerful, it will cycle on and off too frequently, leading to inefficiency and higher energy costs. If it's too weak, it won't cool the room adequately.
Energy Efficiency Ratio (EER)The Energy Efficiency Ratio (EER) measures how efficiently an AC unit uses energy to cool a room. A higher EER means better energy efficiency, which can lead to lower electricity bills. EER values typically range from 8 to 12. For optimal energy savings, look for units with an EER of 10 or higher. If you use the AC frequently or for long periods, a higher EER can significantly reduce your energy costs over time.
Noise LevelNoise level is an important consideration, especially if the AC unit will be installed in a bedroom or living area where quiet is essential. Noise levels are measured in decibels (dB). Units with noise levels below 50 dB are considered quiet, while those above 60 dB can be quite loud. To ensure a comfortable environment, choose a unit with a noise level that suits your tolerance and the room's purpose. For bedrooms, quieter units are preferable to avoid disturbances during sleep.
Installation and SizeThe size and installation requirements of a window AC unit are crucial for ensuring it fits properly in your window. Measure your window dimensions before purchasing to ensure compatibility. Some units are designed for standard windows, while others may fit sliding or casement windows. Additionally, consider the weight of the unit, as heavier models may require additional support or professional installation. Choose a unit that fits your window type and can be installed securely without compromising safety.
Additional FeaturesModern window AC units come with various additional features that can enhance convenience and comfort. These may include remote controls, programmable timers, sleep modes, energy-saving modes, and smart connectivity for control via smartphone apps. While these features can add to the cost, they can also provide greater flexibility and ease of use. Consider which features are important to you based on your lifestyle and preferences. For example, a programmable timer can help you save energy by cooling the room only when needed.

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