10 Best window air conditioner for sliding windows of 2025

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Windmill

Windmill 10,000 BTU Inverter Window Air Conditioner with WhisperTech - Ultra-Quiet & Smart, Cools up to 450 Sq. Ft. - Easy Install, App/Wi-Fi, Voice-Enabled, Remote Control, High Energy Efficiency
9.8

Exceptional

Our Rating
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Value for Money

2

Della
DELLA 10000 BTU Energy Saving Window Air Conditioner, Work with Alexa, Cools Up to 450 Sq. Ft, GEO Location, AC Unit with WIFI Smart Controls, Remote, Dehumidifier, Fan, Reusable Filter, Easy Install

17% Off
Main highlights

Key Features
Energy-efficient with a CEER of 10.9, smart design with app control, quiet operation, and easy installation for up to 450 sq. ft. coverage.

Ideal Use Cases
Perfect for cooling single bedrooms, large living rooms, offices, or apartments quickly and efficiently on hot summer days.

Customer Reviews Highlight
Most reviews praise its whisper-soft operation, making it ideal for uninterrupted sleep, reading, or watching TV.
9.7

Exceptional

Our Rating

8.7
Easy installation

8.0
Efficient Energy Use

8.0
Remote Control
3

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.
9.6

Exceptional

Our Rating

8.4
Efficient Energy Use

8.4
Remote Control

8.0
Easy installation
4

Soleus Air
Soleus Air Sliding Window Kit, Reinforced Aluminum Works Exclusive with the Soleus Over The Sill (Saddle) Air Conditioner (Air Conditioner Not Included)
Main highlights

Adjustable_Design_Fits_Most_Windows
The Soleus Air Sliding Window Kit is adjustable, fitting horizontal sliding windows from 28.5 to 48 inches.

Ideal_for_Horizontal_Sliding_Windows
Perfect for homes with horizontal sliding windows, ensuring a seamless fit and efficient cooling.

Praised_for_View_Retention
Customers appreciate that it maintains the window view while housing the AC unit.
9.4

Excellent

Our Rating

9.9
Durability

9.5
Remote Control

9.1
Easy installation
5

UNAOIWN

Portable Air conditioner Window Kit, Adjustable Vertical/Horizontal Sliding Window Kit Plate for AC Unit, AC Window Vent Kit, AC Window Seal Suitable for 5.9” AC Exhaust Hose
9.3

Excellent

Our Rating

9.1
Easy installation

9.1
lasts a long time

8.7
worth the money
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6

Loviga
Loviga Portable Air Conditioner Window Kit, Window Vent Kit Seal Kit for Portable Air Conditioner Dryer, 10x40~64 Inch Length Adjustable 2022 Upgraded 100% Sealing Waterproof Easy to Install

10% Off
Main highlights

Adjustable Universal Fit
The LOVIGA Portable AC Window Seal Kit fits all portable ACs and air dryers, adjustable from 25-162cm for versatile home use.

Perfect for Sliding Windows
Ideal for horizontal or vertical sliding windows, ensuring a snug fit for single-hung and double-hung designs.

Simple Installation Praised
Customers appreciate the easy installation, often completed in minutes without complex tools or instructions.
Key specs
- color:Window-25x162cm 10x64
- material:Polyster
- installation:Sliding/Hung Window
- special features:100 Sealing Effect, Easy Install, Sunlight Reflection, Fast Cooling
- capacity:3 Cubic Feet
9.2

Excellent

Our Rating

9.3
Easy installation

9.1
worth the money

8.7
lasts a long time
7

Coolblus
Coolblus 8500 BTU Portable Air Conditioners Cool Up to 360 Sq.Ft,3 IN 1 portable ac unit with Remote Control/LED Display/24Hrs Timer/Window Installation Kit & Screwdriver,White

30% Off
Main highlights

Energy Efficient Cooling
8500 BTU unit cools 360 sq.ft. quickly, eco-friendly.

Versatile Use Scenarios
Ideal for bedrooms, living rooms, and offices.

Quiet Sleep Mode
Customers love the ultra-low noise level for sleeping.
Key specs
- floor area:360 Square Feet
- wattage:840.00
- special features:Portable, Remote control
- noise level:52 dB
- cooling capacity:5100BTU DOE/8500BTU ASHRAE
8.9

Very Good

Our Rating
8

Midea

Midea Arctic King 10,000 BTU Slide Casement Room Air Conditioner
8.8

Very Good

Our Rating
9

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
8.7

Very Good

Our Rating

8.7
Remote Control

8.0
Efficient Energy Use

8.0
Noise level
10

Hisense

Hisense AWL1225TW1W Window Air Conditioner, 12,000 BTU, White

12% Off
8.6

Very Good

Our Rating

10 Best window air conditioner for sliding windows of 2025

1

Windmill 10,000 BTU Inverter Window Air Conditioner with WhisperTech - Ultra-Quiet & Smart, Cools up to 450 Sq. Ft. - Easy Install, App/Wi-Fi, Voice-Enabled, Remote Control, High Energy Efficiency

How do we rank?

How do we rank?

Analyzing top stores

2

DELLA 10000 BTU Energy Saving Window Air Conditioner, Work with Alexa, Cools Up to 450 Sq. Ft, GEO Location, AC Unit with WIFI Smart Controls, Remote, Dehumidifier, Fan, Reusable Filter, Easy Install

8.7

8.0

8.0

3

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

8.4

8.4

8.0

4

Soleus Air Sliding Window Kit, Reinforced Aluminum Works Exclusive with the Soleus Over The Sill (Saddle) Air Conditioner (Air Conditioner Not Included)

9.9

9.5

9.1

5

Portable Air conditioner Window Kit, Adjustable Vertical/Horizontal Sliding Window Kit Plate for AC Unit, AC Window Vent Kit, AC Window Seal Suitable for 5.9” AC Exhaust Hose

9.1

9.1

8.7

6

Loviga Portable Air Conditioner Window Kit, Window Vent Kit Seal Kit for Portable Air Conditioner Dryer, 10x40~64 Inch Length Adjustable 2022 Upgraded 100% Sealing Waterproof Easy to Install

9.3

9.1

8.7

7

Coolblus 8500 BTU Portable Air Conditioners Cool Up to 360 Sq.Ft,3 IN 1 portable ac unit with Remote Control/LED Display/24Hrs Timer/Window Installation Kit & Screwdriver,White

8

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

9

FHSC102WB1

8.7

8.0

8.0

10

Hisense AWL1225TW1W Window Air Conditioner, 12,000 BTU, White

Similar products on Amazon

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

$156.99

Feelfunn 8000 BTU Portable Air Conditioners - Cools 350 Sq.Ft., 3-in-1 Portable AC Units for Rooms with Remote Control,Sleep Mode,24H Timer, AC Unit for Bedroom Apartment Dorms, Window Kit Included

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