10 Best casement window air conditioners of 2025

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Best Choice

1

Durastar
Durastar DRCAC101XNA1 10,000 BTU 115V Casement Air Conditioner - White
Main highlights

Efficient Cooling for Medium Spaces
The DRCAC101XNA1 offers 10,000 BTU cooling for 400-450 sq ft.

Perfect for Sliding Windows
Specifically designed for left-to-right sliding window installation.

Highly Rated Energy Efficiency
With an EER of 10.4, it's praised for energy savings.
Key specs
- floor area:400 to 450 sq ft
- installation:Casement windows only
- noise:67.5 dB
- special features:Dehumidifier, Sleep Mode
- voltage:115 Volts
9.9

Exceptional

Our Rating
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Value for Money

2

PerfectAire
Perfect Aire 10,000 Slider Air Conditioner Window A/C-Casement, 10000 BTU, Gray
Main highlights

Key Features
10,000 BTU capacity, includes remote control, auto-restart, and multiple modes. Offers full air direction control and easy filter access.

Ideal Use Cases
Perfect for cooling rooms efficiently with energy saver mode, and operates quietly in sleep mode for overnight comfort.

Customer Reviews Summary
Most praised for its efficient cooling, ease of installation, and the convenience of the included remote control.
9.8

Exceptional

Our Rating

8.4
Efficient Energy Use

8.4
Remote Control

8.0
Easy installation
3

Frigidaire
FHSC102WB1
Main highlights

Key Features
Offers cooling flexibility with three fan speeds. Ideal for varying temperature needs and energy efficiency.

Ideal Use Cases
Perfect for home, office, or outdoor settings needing adaptable cooling options. Excels in fluctuating weather conditions.

Customer Reviews
Most praised for its quiet operation across all speeds, enhancing comfort without disruptive noise.
Key specs
- floor area:450 Square Feet
- installation:Window Kit
- noise:56 dB
- special features:Multi-Speed Fan
- voltage:115 Volts AC
9.7

Exceptional

Our Rating

8.7
Remote Control

8.0
Efficient Energy Use

8.0
Noise level
4

IKSTAR
400CM (157") Portable AC Window Seal Kit for Casement Crank Skylight Windows, Newest Waterproof Insulated Window Vent Kit with Flexible Zipper Design for Single&Dual Hose Air Conditioners, No Drilling

18% Off
Main highlights

Efficient Cooling and Energy Saving
Seals gaps between portable AC and window, preventing air leaks, enhancing cooling efficiency, and reducing energy bills. Easy installation without tools.

Versatile and Reusable for Various Windows
Ideal for bottom-hung windows, skylights, and single or dual-hose AC units. Not suitable for sliding, vertical push-pull, or stereo revolving windows.

Easy Installation and Durable Material
Customers praise the ease of installation and the durable material that creates a tight seal, preventing air leaks and maintaining a cooler home environment.
Key specs
- material:Translucent thickened material
- mounting:Window-mounted
- installation:Easy, no tools required
- special features:Reusable, eco-friendly
- dimensions:158 x 3.14 x 3.14 inches
9.6

Exceptional

Our Rating

8.7
Attachment

8.7
materials Quality

8.0
Easy installation
5

HOOMEE

HOOMEE 400CM (157") Universal Window Seal for Portable Air Conditioner and Tumble Dryer – Works with Mobile Air-Conditioning, Easy to Install - Air Exchange Guards with Zip and Adhesive Fastener
9.3

Excellent

Our Rating

9.3
Simple to use

8.7
worth the money

8.7
Attachment
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6

Midea

Midea Arctic King 10,000 BTU Slide Casement Room Air Conditioner
9.2

Excellent

Our Rating
7

Gruntbear
Gruntbear Portable Air Conditioner Window Seal Kit, 400CM (157'') AC Casement , Hot Air Stop Air Exchange Guards with Zip and Adhesive Fastener Works with Tumble Dryer, Keep House Cool
Main highlights

Key Features and Benefits
Enhances AC cooling, saves energy, waterproof nylon material, easy installation without tools, suitable for various window types.

Ideal Use Cases
Perfect for hot, humid days and rainy weather, ideal for homes with push-out or pull-in windows, enhances portable AC efficiency.

Customer Reviews Highlight
Most praised for its ability to significantly improve room cooling, ease of installation, and effectiveness in different weather conditions.
Key specs
- material:Nylon
- mounting:Window
- installation:No drilling required
- special features:Portable
- dimensions:12.09 x 7.32 x 1.85 inches
9.1

Excellent

Our Rating

8.7
Easy installation

8.0
Durability

8.0
lasts a long time
8

Frigidaire
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

20% Off
Main highlights

Compact and Efficient Cooling
The Frigidaire FHWC063TC1 provides 6,000 BTU cooling power for compact spaces up to 250 sq. ft.

Ideal for Small Spaces
Perfect for cooling bedrooms, small offices, or dorm rooms efficiently.

Quiet and Powerful Performance
Customers praise its quiet operation and effective cooling even on low settings.
Key specs
- floor area:250 Square Feet
- installation:Window
- noise:51 dB
- special features:Remote Controlled, Filter Light Reminder, Dust Filter
- voltage:115 Volts AC
9.0

Excellent

Our Rating

9.7
Comfort

8.0
worth the money

8.0
Easy installation
9

Loviga

Loviga 400CM(157") Portable AC Window Seal, Casement Window Vent Kit Seal Kit for Portable Air Conditioner Dryer, 100% Sealing Waterproof Easy to Install for Crank Out/Awning/Skylights Window
8.9

Very Good

Our Rating
10

LIHONK

Window Seal Kit Silver for Portable Air Conditioner - 【30%Sunshade Heat Insulation Universal】- Window Vent Seal Kit For AC And Tumble Dryer - 100% Sealing Waterproof Adjustable(400cm-Casement Window)

29% Off
8.8

Very Good

Our Rating

10 Best casement window air conditioners of 2025

1

Durastar DRCAC101XNA1 10,000 BTU 115V Casement Air Conditioner - White

How do we rank?

How do we rank?

Analyzing top stores

2

Perfect Aire 10,000 Slider Air Conditioner Window A/C-Casement, 10000 BTU, Gray

8.4

8.4

8.0

3

FHSC102WB1

8.7

8.0

8.0

4

400CM (157") Portable AC Window Seal Kit for Casement Crank Skylight Windows, Newest Waterproof Insulated Window Vent Kit with Flexible Zipper Design for Single&Dual Hose Air Conditioners, No Drilling

8.7

8.7

8.0

5

HOOMEE 400CM (157") Universal Window Seal for Portable Air Conditioner and Tumble Dryer – Works with Mobile Air-Conditioning, Easy to Install - Air Exchange Guards with Zip and Adhesive Fastener

9.3

8.7

8.7

6

Midea Arctic King 10,000 BTU Slide Casement Room Air Conditioner

7

Gruntbear Portable Air Conditioner Window Seal Kit, 400CM (157'') AC Casement , Hot Air Stop Air Exchange Guards with Zip and Adhesive Fastener Works with Tumble Dryer, Keep House Cool

8.7

8.0

8.0

8

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

9.7

8.0

8.0

9

Loviga 400CM(157") Portable AC Window Seal, Casement Window Vent Kit Seal Kit for Portable Air Conditioner Dryer, 100% Sealing Waterproof Easy to Install for Crank Out/Awning/Skylights Window

10

Window Seal Kit Silver for Portable Air Conditioner - 【30%Sunshade Heat Insulation Universal】- Window Vent Seal Kit For AC And Tumble Dryer - 100% Sealing Waterproof Adjustable(400cm-Casement Window)

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