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Energy Efficient Air Conditioner Comparison - May 2026
Overview: When it’s hot outside, the last thing you want is an air conditioner that jacks up your energy bill.
So how do you find an energy efficient air conditioner? Comparing EER, CEER, and SEER ratings is a good place to start.
These ratings tell you how much energy the AC unit uses to cool a space, and the higher the rating, the more efficient the unit is.
Other factors to consider are the size of the unit and the features offered.
Midea 8,000 BTU U Shaped Smart Inverter Window Air Conditioner - Cools 350 Sq Ft, Ultra Quiet with Open Window Flexibility - Alexa/Google Assistant Compatible - 37% Energy Savings, Remote (Updated)
Model
SereneLife 3-in-1 Portable Air Conditioner with Built-in Dehumidifier Function,Fan Mode, Remote Control, Complete Window Mount Exhaust Kit
Model
Midea 10,000 BTU U Shaped Smart Inverter Window Air Conditioner - Cools 450 Sq Ft, Ultra Quiet with Open Window Flexibility - Alexa/Google Assistant Compatible - 35% Energy Savings, Remote (Updated)
Model
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
Model
Uhome Portable Air Conditioner, 8000 BTU Compact AC Unit with Cooling, Dehumidifier, Fan, Remote Control and Window Mount Kit Included, White
Model
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
Brand
Midea
Brand
SereneLife
Brand
Midea
Brand
Amazon Basics
Brand
Uhome
Brand
GE
Reviews
3,609 reviews
Reviews
67,938 reviews
Reviews
3,519 reviews
Reviews
9,216 reviews
Reviews
2,004 reviews
Reviews
3 reviews
Features
Remote control
9.4
Remote control
9.6
Remote control
9.4
Remote control
7.0
Remote control
9.1
Remote control
8.4
Noise level
7.9
Noise level
8.1
Noise level
7.9
Noise level
7.9
Noise level
7.6
Noise level
7.0
Tech Specs
item weight
55.6 pounds
item weight
46.3 pounds
item weight
56.9 pounds
item weight
35.3 pounds
item weight
40.8 pounds
item weight
4.8 pounds
voltage
115 Volts
voltage
120 Volts
voltage
115 Volts
voltage
115 Volts
voltage
115 Volts
voltage
115 Volts
floor area
350 Square Feet
floor area
350 Square Feet
floor area
450 Square Feet
floor area
150 Square Feet
floor area
200 Square Feet
floor area
250 Square Feet
included components
Window Bracket, Remote Control
included components
Exhaust Hose, REMOTE
included components
Window Bracket, Remote Control
included components
-
included components
Remote control Exhaust hose Drain hose Manual Window plates
included components
Window Air Conditioner, Remote Control
batteries required
Yes
batteries required
Yes
batteries required
Yes
batteries required
-
batteries required
No
batteries required
Yes
warranty description
Two limited year warranty from original purchase date. (Valid for authorized purchases only)
warranty description
1 Year Warranty Hassle free
warranty description
Two limited year warranty from original purchase date. (Valid for authorized purchases only)
warranty description
-
warranty description
-
warranty description
1-Year Limited Warranty
product dimensions
19.17 x 21.97 x 13.46 inches
product dimensions
-
product dimensions
19.17 x 21.97 x 13.46 inches
product dimensions
15.98 x 13.19 x 12.05 inches
product dimensions
-
product dimensions
13.38 x 16.36 x 12.59 inches
color
White
color
-
color
White
color
-
color
White
color
-
batteries included
Yes
batteries included
-
batteries included
Yes
batteries included
-
batteries included
No
batteries included
-
wattage
710 watts
wattage
-
wattage
890 watts
wattage
-
wattage
695 watts
wattage
-
special features
Dehumidifier, Dust Filter, Fast Cooling, Remote Controlled
special features
-
special features
Dehumidifier, Dust Filter, Fast Cooling, Remote Controlled
Here are the top 3 recommended products with more information to help you find the right product for you
9.9
1
Midea
Midea 8,000 BTU U Shaped Smart Inverter Window Air Conditioner - Cools 350 Sq Ft, Ultra Quiet with Open Window Flexibility - Alexa/Google Assistant Compatible - 37% Energy Savings, Remote (Updated)
9.4Remote Control
7.9Noise level
Why we love it
Ultra-quiet operation ideal for peaceful environments.
Significant energy savings reduce electricity bills.
Smart control enhances convenience and flexibility.
Main highlights
ULTRA QUIET - The U-shape design of Midea U Smart Inverter air conditioner uses your window to block noise outside. The highly-efficient inverter system warrants ultra-low noise and vibration, 10x quieter than traditional units with operation as low as 32 dBA. Cooling Watts: 710W, Rated Cooling Amps (AHAM): 8.78.Airflow (CFM) Roomside (hi low): 215/150. Refrigerant: R32.
SMART CONTROL - Midea U Smart Inverter air conditioner is Wi-Fi enabled and can be controlled from anywhere using the SmartHome app on iOS or Android. You can also use voice commands throughout your house, office, or apartment using Alexa or Google Assistant devices.
ROBUST INSTALLATION - Install the included quick-snap bracket, set the air conditioner on the bracket, and secure the sidearms. Then you are all done and ready to enjoy. Available for single-hung or double-hung windows with width 22"-36", minimal height at 13.75".
MORE THAN 37% ENERGY SAVINGS - With the advanced DC Inverter technology, Midea U window air conditioner achieves over 35% energy savings compared to other traditional units. It is the first window AC to obtain the ENERGY STAR Certification.
FLEXIBLE WINDOW OPENING - The U-shaped design allows your window to open, bringing fresh air into your home and maintaining more of your view when the window air conditioner is installed. When the window is closed, the Anti-Theft Mechanism locks the window for added safety.
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9.8
2
SereneLife
17% Off
SereneLife 3-in-1 Portable Air Conditioner with Built-in Dehumidifier Function,Fan Mode, Remote Control, Complete Window Mount Exhaust Kit
9.6Remote Control
8.1Noise level
Why we love it
Lightweight and easy to move.
Cools small rooms quickly.
Effective dehumidifier function.
Main highlights
THREE OPERATING MODES: The compact floor AC indoor cooler conditioning unit features a simple electric plug in operation and introduces 3 modes - cooling, dehumidifier and fan. The default mode is cooling, it is automatically activated after power ON
REMOTE CONTROL: Features a digital touch button control panel which includes the power, mode, timer, temperature and fan speed settings. Other functions such as unit selector (°C/°F), sleep key can be adjusted using the included remote control
HANDY AND PORTABLE: The SereneLife Portable Air Conditioner System features a lightweight, handy, sleek body design intended to be used in the bedroom, living room or garage at home or office. It features rolling wheels for easy portability
EIGHT THOUSAND BTU Cooling Power: With 900W rated power and 8000 BTU cooling power, the cold air can cover a room of up to 215+ sq ft! Air flow is rated at 290 m3/hr, moisture removal/dehumidifier at 1.2 liters/hr w/ an operating noise level of only 55-57 dBa
BUILT-IN DEHUMIDIFIER: You don’t only get the cooling effect of the portable AC but also helps reduce humidity levels, which makes your home less hospitable to allergens such as dust mites, mold, mildew by selecting dehumidifier mode
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9.7
3
Midea
Midea 10,000 BTU U Shaped Smart Inverter Window Air Conditioner - Cools 450 Sq Ft, Ultra Quiet with Open Window Flexibility - Alexa/Google Assistant Compatible - 35% Energy Savings, Remote (Updated)
9.4Remote Control
7.9Noise level
Why we love it
Ultra-quiet operation enhances home comfort.
Significant energy savings reduce electricity bills.
Smart control with app and voice commands.
Main highlights
ULTRA QUIET - The U-shape design of Midea U Smart Inverter AC uses your window to block noise outside. The highly-efficient inverter system warrants ultra-low noise and vibration, 10x quieter than traditional units with operation as low as 32 dBA. Cooling Watts: 890W. Rated Cooling Amps (AHAM): 9.97. Control Type: Electronic. Refrigerant: R32.
SMART CONTROL - Midea U Smart Inverter AC is Wi-Fi enabled and can be controlled from anywhere using the SmartHome app on iOS or Android. You can also use voice commands throughout your house, office, or apartment using Alexa or Google Assistant devices.
ROBUST INSTALLATION - Install the included quick-snap bracket, set the unit on the bracket, and secure the sidearms. Then you are all done and ready to enjoy. Available for single-hung or double-hung windows with width 22"-36", minimal height at 13.75".
MORE THAN 35% ENERGY SAVINGS - With the advanced DC Inverter technology, Midea U achieves over 35% energy savings compared to other traditional units. It is the first window AC to obtain the ENERGY STAR Certification.
FLEXIBLE WINDOW OPENING - The U-shaped design allows your window to open, bringing fresh air into your home and maintaining more of your view when the unit is installed. When the window is closed, the Anti-Theft Mechanism locks the window for added safety.
Show more
Our ranking system
At bestchoice.com, our team curates a selection of top products from a vast array available online, using a sophisticated ranking system based on carefully defined criteria. While traditional hands-on testing has its merits, our use of AI technology offers distinct advantages. AI allows us to process and analyze vast amounts of data from multiple sources, providing a comprehensive view that goes beyond what manual testing can achieve. This approach enables us to deliver insights that are aligned with current trends and consumer preferences, ensuring our reviews are both relevant and up-to-date.
Features
Our AI-driven analysis examines key attributes, capabilities, and other critical factors tailored to each product category. This method allows us to assess effectiveness from various perspectives, ensuring a well-rounded evaluation.
Consumer Reviews
We aggregate and evaluate consumer feedback from across the internet, giving weight to ratings and reviews that reflect the most reliable insights. AI enhances this process by filtering and prioritizing data, offering a balanced view without the need for direct personal endorsements.
Popularity
Our system also considers the popularity of products, analyzing factors such as market presence, reputation, and user satisfaction. By leveraging AI, we capture a comprehensive picture of a product's standing in the market, which may not always be evident through traditional testing.
Value for money
AI allows us to compare products based on attributes like price, specifications, and user feedback, helping to determine their value for money. This data-driven approach offers an efficient and reliable way to assess how products stack up against one another in terms of cost-effectiveness.
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Advertising Disclosure
9.4 
9.9
1Midea
Ultra-quiet operation ideal for peaceful environments.
