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10 Best Efficient Window Air Conditioner 2025 in the United States
#1
Winner
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
The Frigidaire 12,000 BTU window air conditioner is designed to cool spaces up to 550 square feet, making it a solid choice for medium-sized rooms like living rooms or large bedrooms. Its cooling capacity is suitable for these areas, offering customizable temperature settings and 6-way directional airflow for good coverage. The unit runs at about 57 dB, which is fairly quiet for a window AC, so it won’t be too disruptive in most home environments.
Rating
10.0
Chosen by1,301
Cooling Capacity (BTU)
Energy Efficiency Ratio (EER)
Noise Level
Most important from
17561 reviews
#2
GE Electronic Window Air Conditioner 5000 BTU, White, Efficient Cooling for Smaller Areas Like Bedrooms and Guest Rooms, 5K BTU Window AC Unit with Easy Install Kit
The GE Electronic Window Air Conditioner with 5000 BTU is designed for efficient cooling in smaller spaces such as bedrooms or guest rooms, making it a suitable choice for people living in studio apartments or those looking to cool small areas. With its cooling capacity of 5000 BTU, it effectively handles room sizes up to 150 square feet, offering decent relief from summer heat. A notable strength is its low-noise operation, producing just 52 dB, which is quite manageable and ideal for use in areas where quiet is appreciated, such as bedrooms during nighttime.
Rating
10.0
Cooling Capacity (BTU)
Energy Efficiency Ratio (EER)
Noise Level
Most important from
8153 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 6,000 BTU window air conditioner suitable for cooling, circulating air, and dehumidifying spaces up to 250 sq. ft., making it ideal for small rooms, apartments, or offices. With a Seasonal Energy Efficiency Ratio (SEER) of 12.1, it is fairly energy-efficient, though it does not have an Energy Star certification. The unit operates at a low noise level of 52 dB, ensuring a quiet environment, which is a significant benefit for both home and office use.
Rating
10.0
Cooling Capacity (BTU)
Energy Efficiency Ratio (EER)
Noise Level
Most important from
16832 reviews
Top 10 Best Efficient Window Air Conditioner 2025 in the United States
#1
Winner
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
Cooling Capacity (BTU): 12000 British Thermal Units
Noise Level: 57 dB
Size and Installation: 21.4x18.9x14.6 in, Window install
Additional Features: Remote, Filter Light, Dust Filter, Timer
Chosen by 1301 this week
GE Electronic Window Air Conditioner 5000 BTU, White, Efficient Cooling for Smaller Areas Like Bedrooms and Guest Rooms, 5K BTU Window AC Unit with Easy Install Kit
GE Electronic Window Air Conditioner 5000 BTU, White, Efficient Cooling for Smaller Areas Like Bedrooms and Guest Rooms, 5K BTU Window AC Unit with Easy Install Kit
Cooling Capacity (BTU): 5000
Noise Level: 52 dB
Size and Installation: 13.4 x 16.4 x 11.9 inches
Additional Features: Dehumidifier, digital controls
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)
Cooling Capacity (BTU): 6000
Noise Level: 52 dB
Size and Installation: 13.1 x 15.98 x 12 inches
Additional Features: Remote Controlled, Eco Mode, Dust Filter
GE Window Air Conditioner Unit, 6,000 BTU for Small Rooms up to 250 sq ft. with Adjustable Fan and Cooling Settings, Perfect for Small Bedroom or Living Room, Easy Install Kit Included, White
GE Window Air Conditioner Unit, 6,000 BTU for Small Rooms up to 250 sq ft. with Adjustable Fan and Cooling Settings, Perfect for Small Bedroom or Living Room, Easy Install Kit Included, White
Cooling Capacity (BTU): 6000 British Thermal Units
Noise Level: 56 dB
Size and Installation: 13.38"D x 16.36"W x 12.59"H, EZ Mount
Additional Features: Remote, Washable, Slide-out filter
Related Products
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 Bedroom or Living Room, Easy Install Kit Included, Black
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 Bedroom or Living Room, Easy Install Kit Included, Black
Cooling Capacity (BTU): 5000 British Thermal Units
Energy Efficiency Ratio (EER): SEER rating of 11
Noise Level: 56 dB
Size and Installation: Fits double-hung windows, includes installation kit
Additional Features: Washable filter, mechanical controls, multiple speeds
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
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
Cooling Capacity (BTU): 6000 British Thermal Units
Noise Level: 51 dB
Size and Installation: 13.25"D x 16"W x 12.13"H, Window
Additional Features: Remote, Filter Light, Dust Filter, Timer
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
Cooling Capacity (BTU): 8000
Noise Level: 53 dB
Size and Installation: 19.6 x 19.4 x 12.4 inches
Additional Features: remote control, digital control panel
#10
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
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
Cooling Capacity (BTU): 5000
Energy Efficiency Ratio (EER): 11
Noise Level: 52 dB
Size and Installation: 15.25"D x 16"W x 12"H
Additional Features: Dust Filter, Adjustable Panels, Washable Filter
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Buying Guide for the Best Efficient Window Air Conditioner
Choosing the right window air conditioner can make a significant difference in your comfort and energy bills. It's important to consider various factors to ensure you get an efficient model that meets your needs. Here are some key specifications to look at when selecting an efficient window air conditioner.Cooling Capacity (BTU)BTU stands for British Thermal Units and measures the cooling power of the air conditioner. This spec is crucial because it determines how effectively the unit can cool your space. Generally, higher BTU ratings mean more cooling power. For small rooms (100-300 sq ft), look for units with 5,000-6,000 BTUs. Medium rooms (300-600 sq ft) typically need 7,000-8,000 BTUs, while large rooms (600-1,000 sq ft) may require 9,000-12,000 BTUs. Choose a BTU rating that matches the size of your room to ensure efficient cooling without wasting energy.
Energy Efficiency Ratio (EER)EER measures the efficiency of the air conditioner by comparing its cooling capacity to its power consumption. A higher EER indicates a more efficient unit. This spec is important because it helps you understand how much energy the air conditioner will use, which impacts your electricity bills. Look for units with an EER of 10 or higher for better efficiency. If you prioritize energy savings, opt for models with higher EER ratings.
Noise LevelNoise level is measured in decibels (dB) and indicates how loud the air conditioner will be when operating. This spec is important for ensuring a comfortable environment, especially if the unit will be used in a bedroom or living area. Lower dB ratings mean quieter operation. For a peaceful environment, look for units with noise levels below 60 dB. If noise is a major concern, consider models specifically designed for quiet operation.
Size and InstallationThe physical size of the air conditioner and its installation requirements are important to ensure it fits your window and can be installed properly. Measure your window dimensions and compare them with the unit's specifications to ensure a good fit. Some models are designed for easy installation, which can save you time and effort. If you have a standard window size, most units will fit, but always double-check the dimensions before purchasing.
Additional FeaturesAdditional features such as remote control, programmable timer, sleep mode, and energy-saving mode can enhance the convenience and efficiency of the air conditioner. These features are important because they allow you to customize the operation to suit your needs and preferences. For example, a programmable timer can help you save energy by automatically turning the unit off when not needed. Consider which features are important to you and choose a model that offers them.