10 Best Energy Star Air Conditioner of 2025

Tested and Reviewed: Top 10 Energy Star Air Conditioner deals with expert ratings from 8.1 to a perfect 10

February 2026 Edition

Editor's Choice

9.7

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)

Editor's bottom line:

“This energy star air conditioner is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

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.
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.
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.
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.
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".

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Picked by 397 people today

9.5

Midea

Midea 12,000 BTU U Shaped Smart Inverter Window Air Conditioner - Cools 550 Sq Ft, Ultra Quiet with Open Window Flexibility - Alexa/Google Assistant Compatible - 35% Energy Savings, Remote (Updated)

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.Control Type: Electronic. Clean Filter Indicator Light: Yes. Rated Cooling Amps (AHAM): 12.17. Refrigerant: R32. Cooling Watts: 1140W.
MORE THAN 35% 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.
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.
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.
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".

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9.5

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)

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.
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.
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.
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.
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".

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9.2

Hisense

Hisense 6,000 BTU Smart Inverter Window Air Conditioner, 3 modes (Cooling, Fan, Dehumidifier), Easy Installation,Ultra Quiet, 24.5% more Energy Saving, 2 Years Warranty

Main Highlights

Up to 24.5% Energy Savings Advanced inverter technology optimizes energy efficiency, reducing power consumption by up to 24.5% compared to conventional window unitshelping you save on electricity bills without compromising performance.
Inverter Technology for Superior Comfort Our cutting-edge inverter system ensures quieter operation, precise temperature control, and enhanced energy efficiency, delivering consistent cooling while keeping costs low.
ENERGY STAR Certified Efficiency Designed to meet strict ENERGY STAR standards, this unit operates with maximum efficiency, helping you reduce your carbon footprint while saving on energy costs.
Effortless Installation The easy-to-install window kit ensures a quick and hassle-free setup, so you can start enjoying cool comfort in no timeno professional help required.
Hassle-Free Maintenance A washable, removable filter makes cleaning simple and convenient, ensuring fresh air and long-lasting performance.
Smart Home Connectivity with ConnectLife Control your AC from anywhere using the ConnectLife App or with voice commands via Alexa and Google Assistant. Now Matter Certified for seamless smart home integration.
Customized Comfort with Multi-Purpose Modes Enjoy tailored cooling with three versatile modes: Fan for air circulation, Dry for humidity control, and Cool for powerful air conditioning, adapting to any indoor climate need.
Convenient Dual Control System Adjust settings effortlessly with the user-friendly control panel or the included remote control, giving you flexible control at your fingertips.
Industry-Leading 2-Year Warranty Backed by a reliable 2-year warrantydouble the coverage of standard unitsfor long-lasting performance and peace of mind.
Smart 24-Hour Timer Schedule automatic on/off times to match your routine, maximizing convenience and energy efficiency.

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Best Value

9.0

Save 15%

Amazon Basics

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

15% Off

Main Highlights

EFFICIENT COOLING: 6000 BTU cooling capacity ideal for rooms up to 250 sq. ft. - perfect for bedrooms, home offices, or small to medium living spaces. Two-in-one functionality with cooling and fan-only modes
SMART MAINTENANCE: Equipped with an easy-access, washable filter that captures dust and allergens.
CUSTOMIZABLE COMFORT: Features 7 precise temperature settings, 2-speed cooling and fan modes, and 2-way air direction control for personalized comfort
QUIET OPERATION: Low noise level up to 56 dB creates a peaceful environment suitable for sleeping and working
QUICK INSTALLATION: Fits standard windows 23"-36" wide and minimum 13" high. Comes with expandable side panels and complete mounting kit. Basic tools required for installation (screwdriver not included)

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8.8

Save 11%

LG

LG 14,000 BTU DUAL Inverter Smart Window Air Conditioner, 115V, Cools 800 Sq. Ft. for Bedroom, Living Room, Apartment, Quiet Operation, ENERGY STAR®, works with LG ThinQ, Amazon Alexa and Hey Google

11% Off

Main Highlights

[Maximum Cooling] Cooling Coverage up to 800 Square ft. is ideal for cooling large to x-large rooms with 14,000 BTU window air conditioner for 1 room or space x large.Frequency : 60 hertz.Cord Length : 72
[Efficient, Energy Saving Inverter Technology] LG Inverter Portable Air Conditioners are up to 35% more energy savings than the ENERGY STAR certification requirement. Enjoy LG's innovative Inverter Technology that is both powerful and quiet in your house, office or room. Eco-friendly R32 refrigerant.
[Lo-Decibel Quiet Operation] LG Window Air Conditioners operate at sound levels as low as 44dB (sleep mode). Thanks to LG's unique BLDC Motor and DUAL Inverter Compressor, eliminating unnecessary noise for smooth operation that you will barely notice.
[Control the air from anywhere with LG ThinQ App] When the temperatures rise outside, change the forecast inside. Available LG ThinQ technology lets you control your LG ac unit from your mobile device. The window ac units are even compatible with Google Assistant and Amazon Alexa to control with voice command.
[Easy Installation & Washable Dust Filter] This AC has a fixed chassis and installs easily in a double hung window with included EZ Mount installation kit, Capture dust from the air and keep your dehumidifier working efficiently with our easy-to-clean washable dust filter. air evaporative evaporative chill well artic arctic airconditioner swamp cooler conditioner chillwell personal cool acon cold frio enfriar aireacondicionado acondicionador fuerte bueno confiable robusto verano window ac unit de ventana aire acondicionado caliente para cuarto airconditoner mini aircon aircondi habitacion airconditi aircondition air condition

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8.6

Frigidaire

Frigidaire 8,000 BTU Window Air Conditioner with Remote Control, Cools Up to 350 Sq. Ft., Quiet Operation, Eco Mode, 3 Fan Speeds, Auto Restart, White

Main Highlights

Customizable Cooling: Achieve optimal comfort with custom temperature settings, 6-way directional airflow, and three different fan speeds
Easy Maintenance: Effortlessly adjust settings with the remote control and keep your AC unit working efficiently with Clean Filter alerts that notify you when it's time to clean the washable dust filter
Energy-Efficient Performance: Save energy with Eco Mode while maintaining a comfortable temperature and reduce energy consumption with Sleep Mode, which gradually increases the temperature overnight
Consistent Comfort: This window air conditioner operates at just 54 dBA, providing quiet cooling that makes it ideal for bedrooms or small living rooms up to 350 sq. ft.
Effortless Convenience: Set the 24-hour on/off timer to match your schedule and enable Dry Mode to remove excess moisture from the air, creating a more comfortable environment

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8.3

Save 11%

Midea

Midea 8,000 BTU Smart Inverter Window Air Conditioner with APP, Alexa Control, 115V AC Unit Cools up to 350 Sq. Ft, Quiet Operation, Energy Saving, Remote & Easy Installation Kit, White

11% Off

Main Highlights

Powerful Cooling Performance: This 8,000 BTU window air conditioner delivers robust cooling, perfect for beating the summer heat in large rooms up to 350 square feet.
Easy To Use This air conditioner comes with an LED display, 4 Modes (Auto, Cool, Dry, Fan), 3 speed settings (Auto/H/M/L), 24-hr Timer, and ECO energy saver. Wireless control enabled window ac unit from anywhere with the SmartHome App, or with your voice via Alexa and Google Assistant. All functions can be set via the control panel, remote control, and app or voice assistant.
Save Energy Being Cool Save on energy costs and enjoy ultimate comfort with this energy star certified unit. This energy efficient air conditioner unit is engineered with variable-speed inverter technology that will quickly cool your bedroom or apartment space while using considerably less electricity; more than 35% energy savings compared to the Energy Conservation Standard. Washable filter is easily accessed from front panel for regular cleaning to maintain peak performance.
Ultra Low Noise Performance This ac window unit operates at a noise level as low as 40 dBA. Its such a quiet air conditioner that you will barely notice it, even when its on high. Enjoy your Zoom call, watch your favorite TV show, have a conversation. This ac unit for bedroom also creates just the right amount of white noise so you can get some rest.

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8.1

Save 11%

Midea

Midea 5,000 BTU EasyCool Small Window Air Conditioner - Cool up to 150 Sq. Ft. with Easy-to-Use Mechanical Controls and Reusable Filter, Perfect for Small Bedroom, Living Room, Home Office

11% Off

Main Highlights

PERFECT FOR SMALLER ROOMS - Midea's Affordable Window AC unit is perfect to help your room be as comfortable as possible. It can cool a space with 7 temperature settings, 2 cooling/2 fan only speeds and 2-way air direction to give you the perfect amount of cooling every time.Controller type:Button Control.Air Flow efficiency:145 CFM.Core material : Copper..Control Type : Electronic. Refrigerant : R410A.
ENERGY EFFICIENT- Midea's 5,000 BTU window air conditioner has a Combined Energy Efficiency Rate (CEER) of 11.0 which helps reduce the energy costs to save you money throughout the year.
QUIET & EASY TO USE - This window AC unit is more quiet than a household refrigerator. It also features easy-to-use mechanical controls to quickly set the time, temperature, and mode and has a removable & reusable air filter.
EASY INSTALLATION - Easily install in your home or apartments existing window frame. Suitable for windows 23''-36'' wide and minimum 13'' high. All mounting accessories are included. A screwdriver is required (but not included) for installation. For some window frames, pilot holes are recommended before installing screws. Please see included instruction manual for further detail.
WARRANTY: 1 Year Parts & Labor Warranty comes with each Midea product to ensure the quality of our brand to our customers. Our team is happy to help if any questions or issues arise and make sure to register your product on our website for even faster support in the future.

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8.1

Save 10%

Keystone

Keystone Energy Star 12,000 BTU Window Mounted Inverter Air Conditioner with Supplemental Heat, Quiet High Efficiency Window AC Unit with Remote for Apartment, Medium-Large Rooms up to 550-Sq.Ft.

10% Off

Main Highlights

Cooling and Supplemental Heating Power: This air conditioner has 12,000 BTUs of cooling power, 10,000 BTUs of supplemental heating power, and dehumidifies the air up to 1.73 pints per hour in rooms up to 550 square feet; Supplemental Heating mode is meant to be operated when temperatures outside are between 41 and 75 degrees; Mode is supplemental and NOT meant as primary heat source
Inverter Technology: Eliminates wasted operation in the AC by controlling the motor speed to exactly the amount of power that is needed to keep the room at the desired temperature
Quieter Operation: The inverter technology not only makes the unit more energy efficient, but allows it to operate 22% quieter on low and 5% quieter on high than regular window units
Easy to Install: This AC fits in windows 14.5-in. tall with a minimum of 24-in. wide and maximum 38.5-in. wide
Washable Filter: A clean filter alert conveniently notifies you to clean the unit's washable filter to ensure it keeps running efficiently

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Our Best Overall Choice

Best Choice

9.7

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)

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

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.
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.
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.
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.
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".

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