10 Best energy efficient window air conditioners of 2026

Save up to 22% off

Best Choice

1

Clicked 194 times in the last month

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 and Energy Efficient
The Midea U Smart Inverter AC operates quietly and saves over 35% energy with its advanced DC Inverter technology.

Ideal for Smart Homes
Perfect for smart homes, controllable via app and voice commands through Alexa or Google Assistant.

Customer Praised Quietness
Customers frequently commend its ultra-quiet operation, making it 10x quieter than traditional units.
9.8

Exceptional

Our Rating
How do we rank?

Powerful technology We scan thousands of products and stores, analyzing reviews to find what matters most to users like you

Careful review Our team ensures quality, value, and fit based on real user feedback

Trusted insights AI and human analysis guide your decisions, reflecting real user priorities
Real users impact

Thousands of users trust our site daily

Based on millions of stores and reviews

Shoppers influence our rankings
Analyzing top stores
Value for Money

2

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 and Energy Efficient
The Midea U Smart Inverter AC operates at just 32 dBA, making it 10x quieter than traditional units, while saving over 37% in energy.

Perfect for Home or Office Use
Ideal for rooms up to 350 sq ft, offering quiet, efficient cooling with smart controls via Alexa or Google Assistant.

Highly Praised Quiet Operation
Customers consistently praise its ultra-quiet performance, allowing for a peaceful home or office environment.
9.7

Exceptional

Our Rating
3

Amazon Basics
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
Main highlights

Compact Efficiency
5000 BTU unit efficiently cools rooms up to 150 sq ft, ideal for small spaces.

Versatile Application
Perfect for dorm rooms, RVs, and small bedrooms needing efficient cooling.

Customer Praised Performance
Highly effective in extreme heat, quickly cooling spaces even in triple-digit temperatures.
9.6

Exceptional

Our Rating

8.4
Easy installation

8.0
worth the money

8.0
Noise level
4

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 and Dehumidifying
Cools and dehumidifies rooms up to 250 sq ft with 12.1 CEER.

Ideal for Bedrooms and Small Rooms
Perfect for cooling large bedrooms or small living spaces.

Customer Praised for Value
Praised for being a good value and effective cooling.
9.5

Excellent

Our Rating

9.9
Efficient Energy Use

8.4
Easy installation

8.0
Remote Control
5

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)
Main highlights

Ultra Quiet and Energy Efficient
The Midea U Smart Inverter AC operates 10x quieter and saves over 35% energy compared to traditional units.

Perfect for Smart Homes
Ideal for those who want remote control and voice assistant compatibility via Alexa or Google Assistant.

Praised for Quiet Performance
Customers frequently commend its ultra-quiet operation, making it perfect for bedrooms and offices.
9.4

Excellent

Our Rating
See Today’s Deals & Prices
6

LG

LG 5000 BTU Window Air Conditioner with Remote, Easy Mechanical Control Ultra-Quiet Compact-size Cools 150 Sq.Ft. for Small Room, Washable Filter AC Unit Easy Installation White LW5025R

12% Off
9.2

Excellent

Our Rating
7

GE
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
Main highlights

Efficient Cooling for Small Spaces
The GE 6000 BTU air conditioner effectively cools rooms up to 250 sq ft, making it ideal for bedrooms and small apartments.

Perfect for Nighttime Use
Low-noise operation ensures a peaceful environment, ideal for bedrooms or home offices requiring minimal disruption.

Easy Installation and Maintenance
Comes with an EZ Mount installation kit and a slide-out filter for hassle-free setup and cleaning.
Key specs
- floor area:250 Square Feet
- installation:Window, EZ Mount
- noise:56 dB
- special features:3 cooling modes
- voltage:115 Volts
9.1

Excellent

Our Rating
8

Frigidaire

Frigidaire 6,000 BTU Window Air Conditioner and Dehumidifier, 115V, Cools up to 250 Sq. Ft. for Apartment, Dorm Room, Small/Medium Rooms, with Remote Control, White

22% Off Limited Time Deal
9.0

Excellent

Our Rating

9.7
Remote Control

8.4
Efficient Energy Use

8.0
worth the money
9

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
8.9

Very Good

Our Rating
10

PeacefulHues

8,000 BTU Window Air Conditioner,Cool Rooms Up to 350 Sq.Ft.,Smart Window AC Unit with Smartphone App or Remote Control,3 Fan Mode,Sleep&ECO Mode,Washable Filter,for Bedroom Apartment Office,New R32
8.8

Very Good

Our Rating

10 Best energy efficient window air conditioners of 2026

1

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)

How do we rank?

How do we rank?

Analyzing top stores

2

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)

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

8.4

8.0

8.0

4

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

9.9

8.4

8.0

5

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)

6

LG 5000 BTU Window Air Conditioner with Remote, Easy Mechanical Control Ultra-Quiet Compact-size Cools 150 Sq.Ft. for Small Room, Washable Filter AC Unit Easy Installation White LW5025R

7

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

8

Frigidaire 6,000 BTU Window Air Conditioner and Dehumidifier, 115V, Cools up to 250 Sq. Ft. for Apartment, Dorm Room, Small/Medium Rooms, with Remote Control, White

9.7

8.4

8.0

9

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

10

8,000 BTU Window Air Conditioner,Cool Rooms Up to 350 Sq.Ft.,Smart Window AC Unit with Smartphone App or Remote Control,3 Fan Mode,Sleep&ECO Mode,Washable Filter,for Bedroom Apartment Office,New R32

Sign up and get exclusive special deals