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10 Best Energy Efficient Window Air Conditioners 2025 in the United States
#1
Winner
Midea MAW12V1QWT U-Shaped AC Window Air Conditioner
The Midea MAW12V1QWT U-Shaped Window Air Conditioner stands out for its energy-saving capabilities, boasting over 35% savings thanks to advanced DC inverter technology and a strong 5-star energy rating. With a cooling capacity of 12,000 BTUs, it effectively cools rooms up to about 550 square feet, making it a solid choice for medium-sized spaces. One of its most notable features is the ultra-quiet operation at just 32 decibels, which is much quieter than typical window ACs, ensuring minimal noise disturbance.
Rating
10.0
Chosen by1,246
Energy Efficiency Ratio (EER)
Noise Level
Smart Features
Most important from
164 reviews
#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
The Midea 12,000 BTU Smart Inverter Air Conditioner is a solid choice if you need to cool or heat a room up to about 550 square feet. It offers multi-season comfort by providing both cooling and supplemental heat, though the heat feature won’t work when it’s very cold outside (below 41°F). It stands out for its energy efficiency with an Energy Star rating and inverter technology that can save up to 35% on electricity compared to standard models, which helps lower your energy bills. The unit is fairly quiet at around 45 to 58 dB, meaning it won’t be too disruptive whether you’re working, watching TV, or sleeping.
Rating
10.0
Energy Efficiency Ratio (EER)
Noise Level
Filter Type and Maintenance
Most important from
769 reviews
#3
Midea 6,000 BTU Window Air Conditioner, 3-in-1 Cool/Fan/Dehumidifier Window AC Unit, Easycool Air Conditioner with Remote Control, Cools up to 250 Sq. Ft., Fits bedroom, study, office (2024 Upgrade)
The Midea MAW06R1CWT EasyCool is a versatile window air conditioner that offers cooling, air circulation, and dehumidification for spaces up to 250 sq ft. It features a cooling power of 6,000 BTUs, making it suitable for small to medium-sized rooms. With a Seasonal Energy Efficiency Ratio (SEER) of 12.1, it is reasonably energy-efficient, although it does not carry an Energy Star certification. The unit operates quietly at 52 dB in low mode, which is ideal for maintaining a peaceful environment.
Rating
9.9
Energy Efficiency Ratio (EER)
Noise Level
Size and Installation
Most important from
15799 reviews
Top 10 Best Energy Efficient Window Air Conditioners 2025 in the United States
#1
Winner
Midea MAW12V1QWT U-Shaped AC Window Air Conditioner
Midea MAW12V1QWT U-Shaped AC Window Air Conditioner
British Thermal Units (BTUs): 12000
Noise Level: 32 dB
Filter Type and Maintenance: Dust filter with clean indicator
Smart Features: Remote control via app and voice
Size and Installation: 19.17x21.97x13.46 in; window install
Chosen by 1246 this week
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
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
British Thermal Units (BTUs): 12000
Noise Level: 45 to 58 dB
Programmable Thermostat: 24-hour timer
Filter Type and Maintenance: washable front panel filter
Smart Features: WiFi, app, Alexa, Google control
Size and Installation: 22.17"D x 19.41"W x 13.9"H
Midea 6,000 BTU Window Air Conditioner, 3-in-1 Cool/Fan/Dehumidifier Window AC Unit, Easycool Air Conditioner with Remote Control, Cools up to 250 Sq. Ft., Fits bedroom, study, office (2024 Upgrade)
Midea 6,000 BTU Window Air Conditioner, 3-in-1 Cool/Fan/Dehumidifier Window AC Unit, Easycool Air Conditioner with Remote Control, Cools up to 250 Sq. Ft., Fits bedroom, study, office (2024 Upgrade)
British Thermal Units (BTUs): 6000
Noise Level: 52 dB
Programmable Thermostat: Yes
Filter Type and Maintenance: Reusable filter
Size and Installation: 13.1 x 15.98 x 12 inches
Frigidaire 12,000 BTU Window Air Conditioner with Remote Control, Cools Up to 550 Sq. Ft., Quiet Operation, Eco Mode, 3 Fan Speeds, Auto Restart, White
Frigidaire 12,000 BTU Window Air Conditioner with Remote Control, Cools Up to 550 Sq. Ft., Quiet Operation, Eco Mode, 3 Fan Speeds, Auto Restart, White
British Thermal Units (BTUs): 12000
Noise Level: 57 dB
Programmable Thermostat: 24-hour timer
Filter Type and Maintenance: Washable dust filter, light reminder
Smart Features: Remote controlled
Size and Installation: 21.4x18.9x14.6 in, window install
GE Window Air Conditioner Unit, 5,000 BTU for Small Rooms up to 150 sq ft. with Manual Adjustable Fan and Cooling Settings, Perfect for Small Bedroom or Living Room, Easy Install Kit Included, White
GE Window Air Conditioner Unit, 5,000 BTU for Small Rooms up to 150 sq ft. with Manual Adjustable Fan and Cooling Settings, Perfect for Small Bedroom or Living Room, Easy Install Kit Included, White
British Thermal Units (BTUs): 5000
Noise Level: 56 dB
Programmable Thermostat: No
Filter Type and Maintenance: Washable Filter
Smart Features: No
Size and Installation: 13.38"D x 16.36"W x 12.59"H
Related Products
GE Electronic Window Air Conditioner 6000 BTU, Black, Efficient Cooling for Smaller Areas Like Bedrooms and Guest Rooms, 6K BTU Window AC Unit with Easy Install Kit
GE Electronic Window Air Conditioner 6000 BTU, Black, Efficient Cooling for Smaller Areas Like Bedrooms and Guest Rooms, 6K BTU Window AC Unit with Easy Install Kit
British Thermal Units (BTUs): 6000
Noise Level: 52 dB
Filter Type and Maintenance: Removable filter, clean monthly
Size and Installation: 15"D x 16.44"W x 12.56"H, EZ Mount
GE Window Air Conditioner Unit, 6,000 BTU for Small Rooms up to 250 sq ft. with Adjustable Fan and Cooling Settings, Perfect for Bedroom or Living Room, Easy Install Kit Included, Black
GE Window Air Conditioner Unit, 6,000 BTU for Small Rooms up to 250 sq ft. with Adjustable Fan and Cooling Settings, Perfect for Bedroom or Living Room, Easy Install Kit Included, Black
British Thermal Units (BTUs): 6000
Noise Level: 56 dB
Programmable Thermostat: No
Filter Type and Maintenance: Washable Filter
Smart Features: No
Size and Installation: 13.38"D x 16.36"W x 12.59"H
LG 12,000 BTU Smart Window Air Conditioner, 115V, AC Window Unit for Rooms up to 550 Sq. Ft., Perfect for Kitchen or Living Room, Phone & Voice Control, Works with LG ThinQ, Amazon Alexa, Hey Google
LG 12,000 BTU Smart Window Air Conditioner, 115V, AC Window Unit for Rooms up to 550 Sq. Ft., Perfect for Kitchen or Living Room, Phone & Voice Control, Works with LG ThinQ, Amazon Alexa, Hey Google
British Thermal Units (BTUs): 12000
Noise Level: 52 dB
Programmable Thermostat: 24-hour timer
Filter Type and Maintenance: Dust filter, light reminder
Smart Features: LG ThinQ, Alexa, Google Assistant
Size and Installation: 22.2x23.6x15 in, kit included
#10
LG 8,000 BTU Window Air Conditioner, 115V, Cools 340 Sq.Ft. for Bedroom, Living Room, Apartment, Quiet Operation, Electronic Control with Remote, 3 Cooling & Fan Speeds, Auto Restart, White
LG 8,000 BTU Window Air Conditioner, 115V, Cools 340 Sq.Ft. for Bedroom, Living Room, Apartment, Quiet Operation, Electronic Control with Remote, 3 Cooling & Fan Speeds, Auto Restart, White
British Thermal Units (BTUs): 8000
Noise Level: 53 dB
Filter Type and Maintenance: slide-out, washable
Smart Features: remote control, auto restart
Size and Installation: 19.6 x 19.4 x 12.4 in, 58 lbs
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Buying Guide for the Best Energy Efficient Window Air Conditioners
Choosing the right energy-efficient window air conditioner can make a significant difference in your comfort and energy bills. The key is to understand the various specifications and how they align with your needs. By focusing on the right features, you can ensure that you get an air conditioner that not only cools your space effectively but also operates efficiently, saving you money in the long run.Energy Efficiency Ratio (EER)The Energy Efficiency Ratio (EER) measures how efficiently an air conditioner uses energy to cool a room. It is calculated by dividing the cooling capacity (in BTUs) by the power input (in watts). A higher EER indicates a more efficient unit. For example, an EER of 10 or above is considered very efficient. If you live in a hot climate or plan to use the air conditioner frequently, opting for a higher EER can lead to significant energy savings.
British Thermal Units (BTUs)BTUs measure the cooling capacity of an air conditioner. The higher the BTUs, the larger the space the unit can cool. For small rooms (100-300 square feet), a unit with 5,000-6,000 BTUs is sufficient. Medium-sized rooms (300-500 square feet) typically require 7,000-8,000 BTUs, while larger rooms (500-800 square feet) may need 10,000-12,000 BTUs. Choosing the right BTU rating ensures that the air conditioner can cool your space effectively without wasting energy.
Noise LevelThe noise level of an air conditioner is measured in decibels (dB). A quieter unit is generally more desirable, especially for bedrooms or living areas where noise can be disruptive. Air conditioners with noise levels below 50 dB are considered quiet. If you are sensitive to noise or plan to use the unit in a quiet environment, look for models with lower decibel ratings.
Programmable ThermostatA programmable thermostat allows you to set specific temperatures for different times of the day, which can help save energy by reducing cooling when it's not needed. This feature is particularly useful if you have a regular schedule and want to ensure your home is cool when you arrive but not wasting energy while you're away. Look for units with easy-to-use programmable settings to maximize convenience and efficiency.
Filter Type and MaintenanceThe type of filter and its ease of maintenance can impact the air quality and efficiency of your air conditioner. Washable and reusable filters are cost-effective and environmentally friendly, while replaceable filters may offer better filtration but require regular replacement. Consider how often you are willing to clean or replace the filter and choose a unit that aligns with your maintenance preferences.
Smart FeaturesSmart features, such as Wi-Fi connectivity and compatibility with smart home systems, allow you to control your air conditioner remotely using a smartphone or voice commands. These features can add convenience and help you manage energy use more effectively. If you enjoy using smart home technology, look for units with these capabilities to enhance your overall experience.
Size and InstallationThe size and ease of installation of a window air conditioner are important considerations. Ensure that the unit fits your window dimensions and comes with a user-friendly installation kit. Some models are designed for easy installation and removal, which can be beneficial if you plan to move the unit between rooms or store it during the off-season. Measure your window and check the installation requirements before making a purchase.