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10 Best Slim Window Ac 2025 in the United States

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Our Top Picks

#1

Winner

GE Profile ClearView Inverter Window Air Conditioner Unit, 12,200 BTU, Energy Efficient Cooling up to 550 sq ft., Ultra Quiet, SMART Home Capable, Includes Remote, White

Rating
10.0
Chosen by1,278
Noise Level
Cooling Capacity (BTU)
Energy Efficiency Ratio (EER)

Most important from
1329 reviews

Noise Level
Runs incredibly quiet—so silent you have to double check it’s on.
Cooling Capacity (BTU)
Cools rooms much larger than expected quickly and efficiently.
Energy Efficiency Ratio (EER)
Seals the window area better than standard AC units, preventing drafts and improving efficiency.
Dimensions and Weight
Installation is straightforward and puts no stress on the window or frame, unlike traditional units.
Additional Features
Smart features with built-in Wi-Fi and voice assistant compatibility add convenient control options.

The GE Profile PHNT12CC Clearview Air Conditioner is designed for medium-sized rooms up to 550 square feet, offering solid cooling power with 12,200 BTUs. It uses inverter technology, which helps it run more quietly and efficiently than conventional models, saving energy and keeping noise levels low at about 40 decibels — roughly the sound of a quiet library. This makes it a great choice if you want a cool room without the common loud hum of window units.

Its unique slim-window design allows for a full view through your window, meaning you don’t lose natural light or the ability to open and close your window easily after installation. The adjustable depth feature adapts to different window thicknesses, providing a secure and neat fit. Dimension-wise, it’s moderately sized (about 28" deep, 20" wide, and 13" high) and weighs around 76 pounds, so installation may require help but is straightforward.

Additional perks include built-in Wi-Fi for smart control through an app and compatibility with Alexa and Google Assistant, making it easy to adjust your cooling without getting up. On the downside, while it’s energy efficient with an EER reflected by its Energy Star rating, its 1-year limited warranty is relatively short compared to some competitors. The model is well-suited for those who want quiet, energy-efficient cooling in a window unit that doesn’t block the view or natural light and offers smart home convenience.

Rating
10.0
Chosen by1,278
Noise Level
Cooling Capacity (BTU)
Energy Efficiency Ratio (EER)

Most important from
1329 reviews

Noise Level
Runs incredibly quiet—so silent you have to double check it’s on.
Cooling Capacity (BTU)
Cools rooms much larger than expected quickly and efficiently.
Energy Efficiency Ratio (EER)
Seals the window area better than standard AC units, preventing drafts and improving efficiency.
Dimensions and Weight
Installation is straightforward and puts no stress on the window or frame, unlike traditional units.
Additional Features
Smart features with built-in Wi-Fi and voice assistant compatibility add convenient control options.
#2

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
9.4
Energy Efficiency Ratio (EER)
Noise Level

Most important from
17700 reviews

Energy Efficiency Ratio (EER)
Energy efficiency is a standout feature, with the unit pulling no more than 400 watts even on max settings.
Noise Level
The Midea unit is impressively quiet, making it a top choice for those sensitive to noise.

The Midea MAW12HV1CWT EasyCool Smart Inverter Air Conditioner Window Unit offers a versatile solution for year-round comfort, with its 12,000 BTU cooling capacity and supplemental heating feature. Designed for rooms up to 550 square feet, it is ideal for large spaces. It boasts an impressive Energy Efficiency Ratio (EER) of 13.3, making it energy efficient and cost-effective. Users can expect up to 35% energy savings compared to the Energy Conservation Standard, thanks to the variable-speed inverter technology. This unit is also Energy Star certified, which is a plus for those looking to reduce their energy consumption.

The noise level is notably low at 45 dBA, ensuring a quiet operation that won’t disturb daily activities or sleep. With dimensions of 22.17 x 19.41 x 13.9 inches and a weight of 58 pounds, it fits most double-hung windows with an opening width of 24 to 38.5 inches. Installation is straightforward with the included kit. Additional features include an LED display, five operational modes, three-speed settings, a 24-hour timer, and ECO energy saver mode. It can be controlled via the control panel, remote, or SmartHome App, and it’s also compatible with Alexa and Google Assistant for voice commands.

The unit also includes a washable filter accessible from the front panel for easy maintenance. However, one limitation is that the heating function will not work if the outside temperature drops below 41°F. Despite being mostly praised for its performance, some users might find the initial setup slightly challenging due to its weight and size. The Midea MAW12HV1CWT is a feature-rich, energy-efficient, and quiet window AC unit that offers both cooling and heating, making it suitable for those looking for a multi-season solution.

Rating
9.4
Energy Efficiency Ratio (EER)
Noise Level

Most important from
17700 reviews

Energy Efficiency Ratio (EER)
Energy efficiency is a standout feature, with the unit pulling no more than 400 watts even on max settings.
Noise Level
The Midea unit is impressively quiet, making it a top choice for those sensitive to noise.
#3

Amazon Basics 6000-BTU Window Air Conditioner, Up to 250 Sqf, Window AC Units with Cool and Fan Functions, Washable Filter, Adjustable Window Kit, Digital Temperature Display, Remote Control, White

Rating
8.8
Cooling Capacity (BTU)
Energy Efficiency Ratio (EER)
Noise Level

Most important from
6615 reviews

Cooling Capacity (BTU)
The unit cools a room quickly and effectively, making it ideal for small to medium spaces.
Energy Efficiency Ratio (EER)
Energy-saving eco mode maintains comfort while reducing electricity consumption.
Noise Level
The included seal foam helps with insulation, but additional measures might be needed to reduce noise and improve energy efficiency.
Dimensions and Weight
The unit is heavier and requires proper installation to ensure stability and optimal performance.
Additional Features
The remote control is easy to use and operates well from a distance, adding convenience.

The Amazon Basics 6000 BTU Window Air Conditioner is a solid choice for cooling small to medium rooms, up to about 250 square feet, like bedrooms or home offices. Its cooling capacity is sufficient for these spaces, providing a comfortable environment with 7 temperature settings and 2-speed fan options for customizable comfort. The unit operates quietly, with noise up to 56 dB, which is gentle enough not to disturb sleeping or working.

Its energy efficiency rating (SEER) of 12.1 is decent, helping to keep electricity use reasonable but not particularly outstanding. Installation is straightforward for windows between 23 and 36 inches wide, with expandable panels included, though you’ll need basic tools like a screwdriver. The washable filter is a nice touch for easy maintenance, helping to keep dust and allergens at bay.

At about 42 pounds and dimensions of roughly 18.5 x 13.4 x 15.7 inches, it’s a bit on the heavier side but still manageable for most users. The cooling and fan functions give flexibility, although it lacks more advanced features like smart controls or remote access, which some users might miss. This AC unit is well suited for those seeking an easy-to-use, effective cooling solution for smaller rooms without extra bells and whistles.

Rating
8.8
Cooling Capacity (BTU)
Energy Efficiency Ratio (EER)
Noise Level

Most important from
6615 reviews

Cooling Capacity (BTU)
The unit cools a room quickly and effectively, making it ideal for small to medium spaces.
Energy Efficiency Ratio (EER)
Energy-saving eco mode maintains comfort while reducing electricity consumption.
Noise Level
The included seal foam helps with insulation, but additional measures might be needed to reduce noise and improve energy efficiency.
Dimensions and Weight
The unit is heavier and requires proper installation to ensure stability and optimal performance.
Additional Features
The remote control is easy to use and operates well from a distance, adding convenience.

Buying Guide for the Best Slim Window Ac

Choosing the right slim window air conditioner can make a significant difference in your comfort during hot weather. Slim window AC units are designed to fit into narrow windows, making them ideal for apartments or rooms with limited window space. When selecting a slim window AC, it's important to consider several key specifications to ensure you get the best performance and efficiency for your needs. Here are the key specs to look at and how to navigate them.
Cooling Capacity (BTU)Cooling capacity, measured in British Thermal Units (BTU), indicates how much heat the air conditioner can remove from a room per hour. This is crucial because it determines how effectively the unit can cool your space. For small rooms (up to 150 square feet), a unit with 5,000-6,000 BTU is sufficient. Medium-sized rooms (150-300 square feet) require 7,000-8,000 BTU, while larger rooms (300-450 square feet) need 10,000-12,000 BTU. To pick the right one, measure your room size and choose a unit with the appropriate BTU rating to ensure efficient cooling.
Energy Efficiency Ratio (EER)The Energy Efficiency Ratio (EER) measures the efficiency of the air conditioner by comparing the cooling capacity (BTU) to the power input (watts). A higher EER indicates a more efficient unit, which can save you money on energy bills. EER ratings typically range from 8 to 12. For better energy savings, look for units with an EER of 10 or higher. If you prioritize energy efficiency and lower operating costs, choose a unit with a higher EER.
Noise LevelNoise level, measured in decibels (dB), indicates how loud the air conditioner will be when operating. This is important for maintaining a comfortable and quiet environment, especially in bedrooms or living rooms. Noise levels for slim window AC units typically range from 50 to 60 dB. For a quieter experience, look for units with noise levels below 55 dB. Consider where you will be using the AC and how sensitive you are to noise when selecting the right unit.
Dimensions and WeightThe dimensions and weight of the air conditioner are important to ensure it fits properly in your window and can be installed safely. Slim window AC units are designed to fit narrow windows, but it's still essential to measure your window dimensions and compare them to the unit's specifications. Additionally, consider the weight of the unit, as heavier units may require additional support or assistance during installation. Choose a unit that fits your window size and can be installed securely.
Additional FeaturesAdditional features can enhance the convenience and functionality of your air conditioner. Common features include remote control, programmable timer, sleep mode, and adjustable fan speeds. These features can make it easier to control the unit and customize your cooling experience. Think about which features are important to you and how they can improve your comfort and convenience when selecting a unit.

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