Physical Address
304 North Cardinal St.
Dorchester Center, MA 02124
10 Best Window AC Side Panels for a Perfect Fit in 2025
The effectiveness of a window air conditioner can greatly diminish if it is not properly fitted to the window frame. This is where the best window AC side panels come into play. These panels ensure that your air conditioning unit is tightly sealed, preventing air leaks and elevating efficiency. In this article, we’ll explore the top 10 window AC side panels available on Amazon in 2025, focusing on their features, pros and cons, and why they’re worth your investment.
1. Prime 2-Pack Adjustable Window Air Conditioner Side Panel
Best For: Easy Installation and Versatility
The Prime 2-Pack Adjustable Window Air Conditioner Side Panel is a top contender among the best window AC side panels on Amazon. These panels are adjustable to fit different window sizes, making them a versatile option for various installations.
Features include a simple sliding mechanism, which allows for adjustments between 22 to 36 inches. The panels are made from durable, weather-resistant materials that ensure longevity. Compatibility with most standard AC units adds to its appeal.
**Pros:**
- Easy to install with minimal tools required
- Adjustable to fit various window sizes
- Durable and weather-resistant material
**Cons:**
- May not fit extremely large windows
- The finish might scratch easily
No products found.
2. A/C Side Panel Kit by Dreo
Best For: Customization and Aesthetic Appeal
The A/C Side Panel Kit by Dreo offers a sleek design that not only ensures optimal air circulation but also enhances the beauty of your window AC installation. These panels are ideal for those who prioritize visual aesthetics alongside functionality.
One of the standout features is the customizable inserts that can be painted or finished to match your room’s decor. Additionally, these panels are engineered for energy efficiency, minimizing your power bills.
**Pros:**
- Customizable to suit any interior design
- Energy-efficient design
- Sturdy construction
**Cons:**
- Requires some assembly
- Higher price point compared to some alternatives
- Before You Buy - Please see Figures 2 and 3 for more details, and check the size before purchase. Product dimension: height: 12-1/4 inches, width: 10-7/8 inches.
- The window ac side panel kit design to fit various window air conditioner models of 8000 BTU. Reminder, NOT compatible with LG brand window air conditioners.
- Reliable A/C Accessory - This is a quality accordion filler replacement for room air conditioner. Features great insulation and dust proof, helps reduce noise, drafts and light.
- In the Box - The package includes 1 pack of window AC side panel with frame, left and right side. Please check the size before ordering to avoid incompatibility.
- Please Note - To fit window AC units for different brands and models, there may be a gap between air conditioner and window, please use foam strip to seal the gap. (Foam strip sold separately)
3. Arctic King Window Air Conditioner Side Panels
Best For: Durability and Performance
The Arctic King Window Air Conditioner Side Panels have been designed to withstand the rigors of frequent use while ensuring high performance. They are specifically crafted for Arctic King units but are also compatible with other brands.
These panels feature a reinforced frame and a unique sealing technology that enhances energy efficiency and noise reduction. They fit windows ranging from 24 to 38 inches, making them a versatile choice.
**Pros:**
- Highly durable material
- Excellent noise reduction features
- Fits multiple brands and sizes
**Cons:**
- May require extra sealing in extremely large windows
- Installation process can be cumbersome
−$0.91
- UNIVERSAL FIT FOR MOST UNITS: Fits window openings up to 39 inches wide. Compatible with popular brands like GE, Frigidaire, LG, Midea, Haier, Arctic King, and many standard window AC models.
- Superior EVA Foam Insulation – Compared to traditional foam, EVA foam offers better sealing, improved soundproofing, and increased durability.
- Block Noise, Heat, and Bugs – Helps reduce outside noise, maintain a comfortable indoor temperature, and keep out dust and insects.
- Easy Replacement Kit – Includes 2 EVA foam panels and 1 adhesive-backed foam strip – ideal for replacing worn-out or damaged AC foam for a tighter, more effective seal.
- Fix Leaks & Drafts Instantly – Seal the gaps between your AC unit and window frame to prevent air leakage, reducing unwanted drafts and energy waste.
4. Koldfront Adjustable Window Air Conditioner Side Panels
Best For: Budget-Friendly Choice
Koldfront Adjustable Window Air Conditioner Side Panels are among the best window AC side panels for those looking for a cost-effective solution without sacrificing quality. These panels are designed to fit most standard window units with ease.
They feature a lightweight yet sturdy design, allowing for easy installation and adjustment. The range of adjustment is between 26 to 38 inches, making them suitable for most applications.
**Pros:**
- Very affordable
- Simple and quick installation
- Compatible with most window AC units
**Cons:**
- Less visually appealing than more expensive options
- Durability may be a concern over long-term use
No products found.
5. Frigidaire 24-Inch Window AC Side Panels
Best For: Compatibility and Ease of Use
The Frigidaire 24-Inch Window AC Side Panels are crafted specifically for Frigidaire air conditioning units but can also accommodate other brands with similar dimensions. These panels maximize the efficiency of your AC while allowing for easy installation.
With these side panels, users can expect a blend of functionality and durability. The pre-drilled holes allow for quick fastening to windows, ensuring a secure fit. They adjust between 24 to 28 inches and feature robust weather stripping to prevent air leaks.
**Pros:**
- Perfect match for Frigidaire units
- Easy installation with pre-drilled holes
- Highly durable design
**Cons:**
- Limited adjustment range compared to other options
- Not as visually appealing
−$5.42
- Panels reduce drafts, dust and moisture from the window air conditioner
- Air conditioner side panels expand from 7 inches to 21 inches (17.7 centimeter to 53.3 centimeter) wide for a custom fit in a variety of windows
- Trim to fit height using a box cutter or sharp scissors
- Clean and dry mounting surfaces thoroughly before installing panels; additional tape may be required for uneven surfaces
- Cut to desired size, apply tape to panels, and install the panels
6. Emall Life Adjustable Air Conditioner Side Panels
Best For: Easy Adjustment and Versatility
The Emall Life Adjustable Air Conditioner Side Panels are an excellent choice for individuals looking for flexibility in their installation. These panels can be adjusted from 21-1/2 inches to 37 inches, accommodating a wide range of window sizes.
They are composed of high-quality plastic materials, ensuring that they stand the test of time. Moreover, the panels’ sleek design integrates well with various interior styles, making them an attractive addition to any home.
**Pros:**
- Highly adjustable to fit various window widths
- Compatible with most air conditioner models
- Attractive design
**Cons:**
- Assembly required
- May not be as sturdy as metal panels
- Height Adjustable Side Panels: Our window AC side panels with frames comes with a height adjustable design, can fit window opening height up to 17", and suitable for most 5,000-14,000 Btu window ac units. (NOT suitable for LG brand)
- Enhanced Thermal Insulation: By keeping cool air in during the summer and warm air in during the winter, this AC window accordion filler kit provides excellent thermal insulation, effective improve indoor comfort.
- Side Panels with Extra Width: The AC side panels can be extended up to 15" on each side, wider than others on the market. This design allows the window AC side panels kit fit windows up to 42" wide, ideal for wider window openings.
- Reliable Material: Made of special plastic material, our AC side panels provide good thermal insulation, block light and seal well. Besides, the window AC accordion can be easily cut to fit your desired height.
- Good Sealing Window AC Side Panels: The ac side panels kit includes a foam sealing strip to seal any gaps and screws for stronger attachment. Ideal replacement kit for your existing old cracked/damaged side panels.
7. Nuwave PC Air Conditioner Side Panel Kit
Best For: Simple Installation
The Nuwave PC Air Conditioner Side Panel Kit stands out for its ease of use and fast installation process. Designed for optimal airflow, these side panels are a reliable selection for any window air conditioning unit.
The panels are constructed from high-quality plastic and come with adjustable widths, making them suitable for a vast array of window sizes. The installation process requires no special tools, allowing for a user-friendly experience.
**Pros:**
- Fast and easy installation
- Multiple adjustment options
- Good airflow efficiency
**Cons:**
- May not match all window styles
- Plastic material can become brittle over time
−$2.05
- 【4 Pack AC Foam Panels】This window ac insulation kit includes 4 pieces of window ac insulation side panels and 2 pair of self-adhesive side channels to meet the sealing needs of a home with 2 window air conditioners.
- 【Premium AC Foam Panelsl】Made of high quality foam material, our window ac side foam panel is soft and durable, providing excellent insulation performance and long lasting use.
- 【Fully Sealed Foam Panels】The air conditioner side foam panels perfectly seal the gap between the AC unit and window frame, keeping hot air out in summer and warm in during winter, while effectively preventing dust, etc. from entering. Providing you with a comfortable and clean room.
- 【Universal AC Insulation Kit】Each window air conditioner side foam panel measures 17 ''H X 9 ''W X 7/8 '' Thick. Universally fitting most 5000-22000 BTU window air conditioners.
- 【Easy to Cut】 The window air conditioner side panels can be cut to any size to fit your window. And you can use the window ac side foam panels kit for seasonal insulation, or to cover the broken original side panels.
8. NewAir AC Side Panel Kit
Best For: Customizable and Modern Look
The NewAir AC Side Panel Kit offers a sleek and modern design, making it another excellent choice among the best window AC side panels. Built for efficiency and aesthetic appeal, these panels are perfect for contemporary homes.
This kit allows for minor adjustments and is made from high-quality materials that ensure enduring performance. The panels fit a wide range of standard AC units, promoting compatibility and versatility.
**Pros:**
- Stylish and modern design
- Wide compatibility with standard units
- Durable construction
**Cons:**
- More expensive than basic models
- May require additional materials for installation
- ✅ Upgrade Height-adjustable - Our window AC side panels with frame can be adjusted to fit window opening height up to 17", universally fit most window AC units from 5,000 to 14,000 Btu.
- ✅ Extra Wide Side Panels - The window AC side panels can be extended up to 15" wide each side, it's wider than other air conditioner side panels on the market, ideal for wider window openings.
- ✅ High Quality Material - Made of flexible and special soft vinyl material that provides excellent insulation, wind and dust resistance, the adjustable window air conditioner side panels can be easily cut to fit your desired height.
- ✅ Side Panel Replacement Kit - Foam sealing strip provided to seal the possible gap, and detailed installation instructions for your convenience. Our AC Side Panel Replacement Kit is perfect for replacing your old cracked/damaged side panels, with no air leaking through the holes.
- ✅ In the Package - The adjustable window ac side panels include 2 panels with frame, left & right side, 1 roll foam seal strip and installation instructions. Please check your original frame or window unit's height.
9. Black + Decker Window AC Side Panels
Best For: Trusted Brand Reliability
The Black + Decker Window AC Side Panels deliver performance and reliability, making them a solid choice for anyone needing effective window treatments for their air conditioning unit. Known for their home appliances, Black + Decker maintains high standards with this product.
Constructed from robust materials, these panels provide a snug fit for increased efficiency. They adjust to fit various window sizes, making them flexible for different installations.
**Pros:**
- Reliable performance from a recognizably trusted brand
- Durable and weather-sealed
- Adjustable to fit most windows
**Cons:**
- Installation can be tricky for some users
- Higher price point for brand recognition
- 【 ✅ Main Design】 Window air conditioner side panels design is mainly designed to isolate the gap between the air conditioner unit and window frame.Block indoor cold air in winter and outdoor hot air in summer.
- 【 ✅ Universal AC Foam Panels】 Window ac side panel suitable for most window ac unit,5000-12000BTU.The size of air conditioner side panel is 39" x 17".Fits window up to 39" width or smaller.
- 【 ✅ Durable Foam】 Window ac foam insualtion panels are made of high quality foam material.The air conditioner foam panel provide excellent insulation performance and long-lasting durability.
- 【 ✅ All Season Protection】 Window ac insualtion side panels works like window seal,ac foam panel can resist airflow, moisture, sealing dust and insects in winter and summer.Use this panel give the ac unit a tidy look.Keep your room more comfortable.
- 【 ✅ Easy to Install】 Air conditioner side panels for window ac unit is easy to use and install.Just use regular scissors to cut to the size you need.Provide a double-sided tape to seal the gaps and hold the panel.
10. EdgeStar Window Air Conditioner Side Panels
Best For: Space-Saving Design
EdgeStar Window Air Conditioner Side Panels are known for their unique space-saving design, perfect for small apartments or homes. These panels help create a clean and efficient barrier around your AC unit, improving performance significantly.
The panels are easily adjustable and can fit a wide variety of window sizes, making them a versatile and valuable addition to your home. They are constructed of high-quality materials that provide a long-lasting solution.
**Pros:**
- Space-saving design
- Wide compatibility with different setups
- Long-lasting materials
**Cons:**
- Less widely stocked in local stores
- Installation might require additional sealing materials
- ✅ Upgrade Height-adjustable - Our window AC side panels with frame can be adjusted to fit window opening height up to 17", universally fit most window AC units from 5,000 to 14,000 Btu.
- ✅ Extra Wide Side Panels - The window AC side panels can be extended up to 15" wide each side, it's wider than other air conditioner side panels on the market, ideal for wider window openings.
- ✅ High Quality Material - Made of flexible and special soft vinyl material that provides excellent insulation, wind and dust resistance, the adjustable window air conditioner side panels can be easily cut to fit your desired height.
- ✅ Side Panel Replacement Kit - Foam sealing strip provided to seal the possible gap, and detailed installation instructions for your convenience. Our AC Side Panel Replacement Kit is perfect for replacing your old cracked/damaged side panels, with no air leaking through the holes.
- ✅ In the Package - The adjustable window ac side panels include 2 panels with frame, left & right side, 1 roll foam seal strip and installation instructions. Please check your original frame or window unit's height.
Buying Guide for Window AC Side Panels
When you’re looking to install or replace a window air conditioning unit, the side panels are crucial for ensuring proper insulation and a secure fit. Here’s a comprehensive guide to help you choose the right side panels for your window AC unit.
1. Understanding the Purpose of Side Panels
- Energy Efficiency: Properly fitted side panels help to minimize air leaks, thereby improving the energy efficiency of your AC unit.
- Security: They prevent outside debris and pests from entering your home.
- Aesthetic Appeal: Panels can enhance the overall look of the installation by providing a clean finish.
2. Types of Side Panels
- Universal Panels: Designed to fit a variety of window AC models and window sizes, these panels are adaptable and often adjustable.
- Custom Panels: Specifically manufactured for particular AC models, ensuring a perfect fit.
- Expandable Panels: These panels can adjust in length to fit various window widths.
3. Material Selection
- Plastic Panels: Lightweight, often UV-resistant, and affordable, ideal for temporary setups.
- Metal Panels: More durable and secure but can be prone to rust if not treated.
- Foam Insulation Panels: Provide excellent insulation and energy efficiency, but may not offer as much durability as metal or hard plastic.
4. Compatibility
- Measurement: Measure the width and height of your window frame and the AC unit to ensure a proper fit. Consider adjusting for variances (1-2 inches) depending on your unit and installation type.
- Window Type: Ensure the panels are compatible with the type of window (single-hung, double-hung, sliding) you have.
5. Installation Process
- Ease of Installation: Check if the panels come with clear instructions and necessary hardware.
- Tools Required: Most installations require basic tools like a screwdriver, but make sure to read the specific requirements.
6. Energy Efficiency Features
- Insulation Rating: Look for panels with good insulation capabilities to reduce energy costs.
- Weatherproof Features: Some panels come with weather seals or gaskets that enhance insulation and prevent moisture entry.
7. Cost Considerations
- Budget: Determine your budget as prices can range from inexpensive to premium based on material and features.
- Long-term Savings: Investing in higher-quality panels can lead to significant energy savings over time.
8. Brand Reputation
- Reviews and Ratings: Research brands based on customer feedback, reliability, and performance.
- Warranty: Look for products with a warranty to ensure you’re covered in case of defects.
9. Where to Buy
- Online Retailers: Websites like Amazon, Home Depot, or Lowe’s often offer a variety of options and competitive pricing.
- Local Hardware Stores: Visiting a local store can give you the chance to physically inspect the panels and consult with experts.
- Manufacturer Websites: Buying directly from the manufacturer might give you access to exclusive models or deals.
10. Final Checklist
- Ensure the side panels you choose fit your AC model and window size.
- Consider installation complexity and necessary tools.
- Review energy efficiency features and insulation ratings.
- Check for warranties and return policies before purchasing.
By following this guide, you can make an informed decision on the best side panels for your window AC unit, ensuring a secure, efficient, and visually appealing installation.
