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10 Best Window Ac 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
9.8
Chosen by1,253
Cooling Capacity (BTU)
Energy Efficiency (EER/CEER)
Noise Level (dB)

Most important from
17480 reviews

Cooling Capacity (BTU)
The combination of powerful cooling capacity and whisper-quiet operation makes it ideal for larger rooms up to around 550 square feet.
Energy Efficiency (EER/CEER)
Energy-efficient inverter technology noticeably reduces electricity usage compared to conventional units, contributing to lower power bills.
Noise Level (dB)
Runs much quieter than traditional on/off window units, producing a gentle background fan noise without the typical buzzing sound.
Size and Fit
Installation requires some care, especially with the U-shaped design and fitting side blocking pieces, but the included hardware and instructions are helpful.
Controls and Features
Smart home integration is seamless, enabling true automation with Matter compatibility and easy pairing with Home Assistant for set-it-and-forget-it comfort.

The Midea 12,000 BTU Smart Inverter Air Conditioner is a solid choice for cooling large rooms up to about 550 square feet. Its inverter technology helps it cool quickly and more efficiently than many traditional window units, offering Energy Star certification and up to 35% energy savings, which can help reduce electricity bills. The unit also doubles as a heater and dehumidifier, making it useful across multiple seasons, although its heat function won’t work well in very cold weather (below 41°F). Noise-wise, it runs quietly at around 45 dB on low settings, which means it won’t disturb conversations or sleep, though at max speed it can reach 58 dB, which is moderate but still manageable.

The size fits common double-hung windows, but you’ll need to check your window measurements carefully to ensure proper installation. The air direction can be adjusted with a swing function, and there are three fan speeds plus five operating modes, giving good control over airflow and comfort. Maintenance is straightforward thanks to a washable filter accessible from the front. Controls are user-friendly with an LED display, remote control, and smart features including app and voice control via Alexa or Google Assistant, adding convenience.

One downside is the unit’s relatively heavy weight at 58 pounds, which might require some help during installation. Additionally, some users might find the heat function limited to milder cold conditions. For those seeking a versatile, efficient, and quiet window AC that covers both cooling and heating and integrates smart technology, this Midea model is a strong option to consider.

Rating
9.8
Chosen by1,253
Cooling Capacity (BTU)
Energy Efficiency (EER/CEER)
Noise Level (dB)

Most important from
17480 reviews

Cooling Capacity (BTU)
The combination of powerful cooling capacity and whisper-quiet operation makes it ideal for larger rooms up to around 550 square feet.
Energy Efficiency (EER/CEER)
Energy-efficient inverter technology noticeably reduces electricity usage compared to conventional units, contributing to lower power bills.
Noise Level (dB)
Runs much quieter than traditional on/off window units, producing a gentle background fan noise without the typical buzzing sound.
Size and Fit
Installation requires some care, especially with the U-shaped design and fitting side blocking pieces, but the included hardware and instructions are helpful.
Controls and Features
Smart home integration is seamless, enabling true automation with Matter compatibility and easy pairing with Home Assistant for set-it-and-forget-it comfort.
#2

Midea 8,000 BTU Smart Inverter Air Conditioner Window Unit with Heat and Dehumidifier – Cools up to 350 Sq. Ft., Energy Star Rated, Quiet Operation, Electronic Controls, Remote Control, White

Rating
9.6
Cooling Capacity (BTU)
Energy Efficiency Ratio (EER)
Noise Level

Most important from
17480 reviews

Cooling Capacity (BTU)
The unit keeps the room at a constant temperature while minimizing humidity, making it ideal for specialized spaces like a fish room.
Energy Efficiency Ratio (EER)
The energy efficiency is outstanding, with the unit pulling no more than 400 watts on both cooling and heating settings.
Noise Level
It is impressively quiet, even on its highest fan speed and turbo mode.
Installation and Size
Installation is straightforward and the unit fits well even in smaller windows, making it versatile for various window sizes.
Additional Features
The heating function won't work below 41°F, but it has been reliable for maintaining warmth in moderate conditions.

The Midea MAW08HV1CWT EasyCool Smart Inverter Air Conditioner Window Unit with Heat offers a versatile solution for year-round comfort. With an 8,000 BTU cooling capacity, it is suitable for rooms up to 350 square feet, making it a good option for medium-sized living spaces. The unit also features a supplemental heat function, providing warmth in cooler months when the outside temperature is above 41°F. This feature makes it more versatile than standard AC units which are only useful in summer.

The energy efficiency of this unit is notable, boasting an Energy Star certification and a SEER rating of 14.5. Its inverter technology allows it to save up to 35% on energy costs, which is a significant advantage for those looking to reduce electricity bills. Additionally, the noise level is impressively low at 45 dB, ensuring a quiet operation that won't disrupt daily activities or sleep. Installation is straightforward for double-hung windows with openings between 24 to 38.5 inches wide and at least 14.5 inches high. The unit comes with an installation kit, remote control, and is WiFi enabled for smart home compatibility, allowing users to control it via an app or voice assistants like Alexa and Google Assistant.

The unit is relatively heavy at 56 pounds, which might make installation a bit challenging for some users. The built-in dehumidifier and multiple operation modes (Cool, Heat, Fan, Dry, Auto) enhance its functionality. The washable filter is a practical feature for maintaining air quality and long-term performance. In summary, the Midea MAW08HV1CWT is an energy-efficient, quiet, and versatile window AC unit with heating capabilities, ideal for those seeking a multi-functional appliance for a mid-sized room.

Rating
9.6
Cooling Capacity (BTU)
Energy Efficiency Ratio (EER)
Noise Level

Most important from
17480 reviews

Cooling Capacity (BTU)
The unit keeps the room at a constant temperature while minimizing humidity, making it ideal for specialized spaces like a fish room.
Energy Efficiency Ratio (EER)
The energy efficiency is outstanding, with the unit pulling no more than 400 watts on both cooling and heating settings.
Noise Level
It is impressively quiet, even on its highest fan speed and turbo mode.
Installation and Size
Installation is straightforward and the unit fits well even in smaller windows, making it versatile for various window sizes.
Additional Features
The heating function won't work below 41°F, but it has been reliable for maintaining warmth in moderate conditions.
#3

Amazon Basics 5000-BTU Small Window Air Conditioner, Up to 150 Sqf, Window AC Units with Cool and Fan Functions, Washable Filter, Adjustable Window Kit, Intuitive Mechanical Controls, White

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

Most important from
6428 reviews

Cooling Capacity (BTU)
This air conditioner cools a room off quickly and can be adjusted in many different ways to suit your needs.
Energy Efficiency Ratio (EER)
The energy efficiency is impressive, as running multiple units used less energy collectively than a central air system.
Noise Level
Despite being a bit loud, the cooling power is evident as it can blow curtains and effectively cool a room.
Installation and Size
Installation is extremely easy with very understandable directions, making it user-friendly even for those who haven't installed a window AC before.

The Amazon Basics Window Air Conditioner boasts a cooling capacity of 5000 BTU, making it suitable for cooling small rooms up to 150 sq. ft. It also serves as a dehumidifier and fan, which adds to its versatility. The unit has seven temperature settings and adjustable air direction, allowing for some customization in your cooling experience. Maintenance is straightforward with a removable and washable filter, ensuring clean air circulation and ease of upkeep.

Installation is relatively simple due to the adjustable side panels that fit standard windows. This makes it adaptable to various window sizes and ideal for renters or those who may need to move it from room to room. The unit’s dimensions are compact, so it won’t take up much window space or protrude excessively into your room. It operates on a standard 115 volts and is corded for power. Weighing in at about 35 pounds, it’s manageable for most people to install without professional help.

This unit is best suited for small spaces where a basic, reliable air conditioner is needed without the bells and whistles of more advanced models.

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

Most important from
6428 reviews

Cooling Capacity (BTU)
This air conditioner cools a room off quickly and can be adjusted in many different ways to suit your needs.
Energy Efficiency Ratio (EER)
The energy efficiency is impressive, as running multiple units used less energy collectively than a central air system.
Noise Level
Despite being a bit loud, the cooling power is evident as it can blow curtains and effectively cool a room.
Installation and Size
Installation is extremely easy with very understandable directions, making it user-friendly even for those who haven't installed a window AC before.

Buying Guide for the Best Window Ac Units

When choosing a window air conditioning unit, it's key to think about your room size, comfort needs, and ease of use. The perfect AC will not only cool your space efficiently, but also fit your window and lifestyle. Understanding the important specifications will help you find a unit that matches your needs without getting overwhelmed by technical details.
Cooling Capacity (BTU)Cooling capacity, measured in BTUs (British Thermal Units), tells you how well the AC can lower the temperature in a space. This is vital because an underpowered unit won't cool your room, whereas an overpowered one may cool too quickly without removing humidity, making the air feel damp and clammy. Rooms up to 150 square feet generally need about 5,000 BTUs, medium rooms up to 350 square feet need 8,000–10,000 BTUs, and large spaces may need 12,000 BTUs or more. To pick the right one, measure your room and check the manufacturer's guide for recommended BTUs, adjusting for things like high ceilings, lots of sun, or if the room is a kitchen.
Energy Efficiency (EER/CEER)Energy efficiency, often shown as EER (Energy Efficiency Ratio) or CEER (Combined Energy Efficiency Ratio), tells you how much cooling you get per watt of electricity used. Higher numbers mean lower energy use and cheaper utility bills. Units are often divided into basic (low EER), medium (middle EER), and high efficiency (high EER/CEER). If you run your AC for many hours or care about energy costs, choosing a higher efficiency model is usually worth it in the long run. Look for units with Energy Star certification for the best energy savings.
Noise Level (dB)Noise level, measured in decibels (dB), is important if the AC will be installed in a bedroom, office, or living room. Quieter units are below 50 dB at their lowest setting, mid-range are 50–60 dB, and louder models are over 60 dB. If you are sensitive to sound or will sleep near the unit, look for a model with a lower dB rating. For daytime use in loud areas, a slightly higher noise level might not be a problem.
Size and FitSize and fit include the unit's dimensions, as well as the type of window it fits. This is crucial because window ACs must fit securely within your window frame to operate safely and effectively. Measure your window opening's width and height, and check that the AC unit's size matches. Some units fit only double-hung windows, while others can adapt to sliders or casement windows, so confirm compatibility before buying.
Air Direction and Fan SpeedsAir direction and fan speeds refer to how you can control where cooled air goes and at what speed it is delivered. Adjustable louvers and multiple fan speeds allow better control of your comfort. Basic units may offer only two or three fan speeds and fixed louvers, while more advanced models allow you to direct air more precisely and have several speed options. If you want customizable comfort or plan to cool a larger room, more control options can help avoid hot or cold spots.
Filter Type and MaintenanceThe filter type and how easy it is to clean matter for air quality and upkeep. Most window ACs have reusable, washable filters, while some have additional features like odor or allergen filters. Easy-to-remove filters make routine cleaning simpler. If you or someone in your household has allergies, consider a unit with a finer or specialty filter and plan for regular maintenance.
Controls and FeaturesControls and features refer to how you interact with the unit. Options range from simple manual knobs to remote controls, programmable timers, and even smart connectivity for control through a phone app or voice assistants. Basic models may only let you set the temperature and fan speed manually, while advanced units offer features like sleep mode, energy saver mode, or scheduling. Pick according to how much convenience and automation you want in your daily routine.

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