10 Best energy star air conditioners of 2026

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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

Key Features
12,000 BTU cooling, 10,000 BTU heating, inverter tech for energy efficiency, and quieter operation. Features washable filter with alert for easy maintenance.

Ideal Use Cases
Best for rooms up to 550 sq. ft., in climates with temperatures between 41-75 degrees for supplemental heating. Perfect for energy-conscious households.

Customer Praise
Most reviews highlight its quiet operation as a standout feature, appreciating the significant noise reduction compared to traditional units.
Key specs
- installation:Easy to Install
- noise:58 dB
- special features:Inverter Technology
- voltage:115 Volts
- floor area:550 Square Feet
9.7

Exceptional

Our Rating

9.3
Easy installation

9.3
Remote Control

9.3
Noise level
How do we rank?

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Value for Money

2

Frigidaire

Frigidaire 14,000 BTU Smart Inverter Window Air Conditioner with Wi-Fi and Energy Star Certification, Cools Up to 700 Sq. Ft., Ultra Quiet Operation, White

13% Off
9.6

Exceptional

Our Rating
3

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.
9.5

Excellent

Our Rating
4

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
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 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.
9.3

Excellent

Our Rating
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6

Frigidaire
Frigidaire 10,000 BTU Smart Inverter Window Air Conditioner with Wi-Fi and Energy Star Certification, Cools Up to 450 Sq. Ft., Ultra Quiet Operation, White

10% Off
Main highlights

Energy Efficient Performance
ENERGY STAR Certified, this air conditioner uses less energy, reducing utility bills while providing effective cooling.

Perfect for Medium Rooms
Ideal for cooling medium-sized rooms, ensuring comfort in living rooms or bedrooms.

Praised Quiet Operation
Customers love its quiet performance, with noise levels as low as 42 dB.
Key specs
- installation:Window
- noise:42 dB
- special features:Remote Controlled, WiFi Enabled
- voltage:115 Volts AC
- floor area:N/A
9.2

Excellent

Our Rating
7

TCL

TCL 10,000 BTU Q-Series Smart Inverter Window AC, 115V, Inverter AC for Rooms up to 450-Sq. Ft., Ultra-Quiet, 38% Energy Saving, EZ Install, Open-able Window, Works with Alexa and Google Assistant

46% Off
9.0

Excellent

Our Rating
8

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

Key Features and Benefits
Ultra Quiet DUAL Inverter technology, 35% more energy-efficient, LG ThinQ for remote control, compatible with Alexa/Google, and 4 cooling speeds.

Ideal Use Cases
Perfect for large rooms up to 800 sq. ft., especially bedrooms and living spaces where quiet operation and energy savings are prioritized.

Customer Reviews Highlight
Most praised for its whisper-quiet operation, making it ideal for night-time use and in environments where noise is a concern.
8.9

Very Good

Our Rating

9.9
Remote Control

9.9
Efficient Energy Use

9.5
Noise level
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
8.8

Very Good

Our Rating
10

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.
8.7

Very Good

Our Rating

9.9
Efficient Energy Use

8.4
Easy installation

8.0
Remote Control

10 Best energy star air conditioners of 2026

1

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.

9.3

9.3

9.3

How do we rank?

How do we rank?

Analyzing top stores

2

Frigidaire 14,000 BTU Smart Inverter Window Air Conditioner with Wi-Fi and Energy Star Certification, Cools Up to 700 Sq. Ft., Ultra Quiet Operation, White

3

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)

4

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)

5

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)

6

Frigidaire 10,000 BTU Smart Inverter Window Air Conditioner with Wi-Fi and Energy Star Certification, Cools Up to 450 Sq. Ft., Ultra Quiet Operation, White

7

TCL 10,000 BTU Q-Series Smart Inverter Window AC, 115V, Inverter AC for Rooms up to 450-Sq. Ft., Ultra-Quiet, 38% Energy Saving, EZ Install, Open-able Window, Works with Alexa and Google Assistant

8

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

9.9

9.9

9.5

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

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

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