5 Best Portable AC Window Seal Kits in 2023 | Reviews

Portable air conditioners offer a practical and cheap cooling solution to the intense summer heat. But their efficiency is affected by their ventilation and the window gaps. To avoid hot air from the exhaust hose coming back inside, it is important to give the window an airtight seal.

Window seal kits are a temporary and cheap solution to this problem of a portable air conditioner. And today, I’ve curated a list of window seals to help you decide the best one for your portable AC unit.

Best Portable AC Window Seal Kits

Here is the list of the 5 best portable AC window seal kits that you can use to improve the efficiency of your portable air conditioner unit.

1. Hoome Window Seal for Portable Air Conditioner - Best Overall

The Hoome portable air conditioner window seal helps keep a closed environment and prevents the warm air inside the AC hose from getting into your room. It seals around your window and then wraps around the nozzle of the hose, blocking the return flow of hot air. This protects the efficiency of your own mobile air conditioning unit. 

This window seal is pretty easy to install as well. You just need to apply the adhesive hook tape to the inside of your window frame and the window itself. Hence, installation is a piece of cake. It has two zippers, so it will work even if your portable air conditioner has two hoses.  

Additionally, the window seal is suitable for most portable air conditioners. They are also suitable for most windows, whether they open to the left or the right, whether it's a bottom-hung window or a skylight. Just note that the maximum allowed perimeter of the window is 400 cm or 157 inches. 

2. Jeacent Window Seal for Portable Air Conditioner - Best for Durability

The Jeacent window seal for a portable air conditioner is easy to install and comes with two different fixing methods. The product box includes most of the things you need for the installation, making it a quick and easy process. 

Its exclusive bottom panel joint leads to a seamless design, keeping all the hot air out and leaving no gaps. It uses durable and thick PVC to help you keep your room cool for longer, leading to savings on energy costs.

Additionally, since it helps to regulate the air exchange efficiently, it helps keep out dust and rain. So, not only does it keep the hot air out, but it also helps to keep the indoor air clean. 

Note that the seal supports hoses with an external diameter between 5.1 and 5.9 inches.

3. Gulrear Window Seal for Portable Air Conditioner - Best for Easy Installation

The Gulrear window seal for portable air conditioners is pretty easy to install, with the panels being easily adjustable due to their slider nuts. It’s designed specifically for exhaust hoses with a diameter of 5 inches so it won’t be compatible with all AC units. 

The product box includes most of the tools you need for the installation, along with the user manual, making installation a breeze. The sealing tape is also provided and is posted at the connection between the sealing plate and the window. This helps to effectively avoid hot air coming in. 

This window kit is designed for sliding windows that open either horizontally or vertically. Additionally, it supports two hoses. So, you can easily use it with your dual hose portable air conditioner.  

4. Airly Portable AC Window Seal Kit - Best for Casement Windows

Most of the window seal kits on this list support all kinds of windows, but casement windows are very different. This Airly seal is one of the best options for window seals if you have casement windows. 

Casement windows, though popular, don’t have a lot of options when it comes to window seals. So, this Airly window seal is specifically designed to fit any casement window. It is also very easy to install since all the tools you need are included in the product box. 

Just note that the window seal will support casement windows measuring less than 158 inches. So, measure the perimeter of your window before purchasing to make sure it’s compatible. 

Also, you don’t need to worry about bugs or insects creeping in. The sturdy zipper makes for easy hose access as well as keeping the insects and the hot air at bay. 

5. Sikadeer Portable AC Window Seal Kit - Best for Sliding Doors

The Sikadeer window seal for a portable air conditioner comes with an instruction manual and is very easy to install. It is suitable for sliding windows as well as sliding doors. The boards included in the seal kit allow you to adjust the size of the kit freely. Thus, it supports windows measuring between 17 and 60 inches.

Make sure the diameter of your hose is 5.1 inches before purchasing to ensure compatibility. The window seal kit is made using PVC material, making it high-temperature resistant, non-toxic, and pollution-free. 

The window seal can also be embedded in the window rails, leading to a tight sealing effect. This helps effectively prevent hot air from coming inside the room.

Comparison of Window Seat Kits for Portable ACs

Buying Guide for the Best Portable AC Window Seal Kit

Any portable air conditioner is bound to send some hot air back inside the room, reducing the efficiency of your portable air conditioner and also hiking up your energy bills. Window seals are an effective solution to this problem.

Here are a few things you should remember to buy the perfect window seal to meet your needs. 

1. Types of Windows

You’ll obviously need to know what kind of window you have before you buy a window seal for it. Unfortunately, window seals don’t work with all kinds of windows. They only work with windows that slide or crank open, like:

• Sliding windows

The most popular window style, sliding windows can be single or double-hung windows and might open horizontally or vertically. 

• Sliding doors

Most window seals that are compatible with sliding windows will also be compatible with sliding doors as well. Just make sure to get the measurement right.

• Casement windows

Casement windows are windows that crank open. And though they offer an unobstructed view of the nearby scenery, they are pretty difficult to seal completely. So, your best option with this window type is to buy mesh kits with zippers.

Thus, windows become very important for the effective functioning of a portable air conditioner. In case you don’t have windows available, through-the-wall window conditioners are also available, which don’t require any window to cool air.  

2. Window dimensions

Window dimensions are a significant measurement you need to keep in mind while purchasing a window seal. Measure all the sides of your window to get the perimeter, and then check the window dimensions for the window seal you are purchasing to make sure it is compatible. 

The perfect size match will ensure a tight seal and lead to the higher efficiency of your portable air conditioner. 

For sliding door seal kits, like the Sikadeer window seal for portable air conditioners, you don’t need the exact measurements. This is because you usually get a sliding door seal bracket to make the installation easier. 

3. Installation

The installation process of window seals mostly depends on the type of window you have, as well as your portable air conditioner. To make sure the instruction process is as hassle-free as possible, check whether the product box comes with everything you need. 

Adhesive tape, adhesive fasteners, and hose connectors are some of the things the product box absolutely needs to include. So, check the product details carefully before going all in. You can also look for installation instructions or user manuals.

For casement windows, mesh kits with zippers are the best option. You can find step-by-step instructions for the installation of this kit in the user manual or on videos online. 

Installing a window seal on a sliding window is even easier as long as your measurements are correct. You can also find step-by-step instructions or video tutorials for these online to make installation an easy process. 

The complete installation process of the window seal kit should not take more than 15 minutes. 

4. Style of Window Seal

Many portable air conditioners are dual-hose models. In case you have a dual hose model, make sure your window seal supports that particular portable air conditioner. On the other hand, most window seals are suitable for single-hose models. 

If you don’t want to go through the hassle of dual hoses, vents, and window seals, you can check out some window fans for another effective cooling solution. 

What is a portable air conditioner window seal kit?

A portable air conditioner is an effective solution to the intense summer heat. But it cannot perform at its maximum efficiency without proper ventilation. Hence, a window seal is a perfect temporary solution.

The window seal helps you to seal the gap created by the exhaust hose, helping to prevent hot air from coming back inside the room. Without a proper window seal, it is like you’re basically running a window air conditioner with the windows open. This really reduces the cooling of your portable air conditioner and also drives up your energy bills.

So, after checking the type and dimensions of your window, you should buy a window seal to make the window airtight.

How do I install a portable AC window seal?

The installation of window seals for a portable air conditioner is a pretty easy task. Most of the tools you need are already included in the product box. The user manual also contains instructions to make installation an easy process. You can also find video tutorials online if needed.

Just make sure to correctly measure your window before purchasing the window seal kit to ensure a smooth installation process.

Will using a portable air conditioner window seal affect my electricity bill?

Yes, it will. But it’s all good news! Because a window seal for portable ACs is meant to drive up the efficiency of your portable air conditioner. If the efficiency goes up, your room gets cooled at a much quicker rate. This means you will need to use the AC for lesser time, leading to savings on your energy bills.

Can I use a portable AC window seal with any brand of portable AC?

Yes, you can. You can use a portable air conditioner window seal with any brand of portable air conditioner. You just need to make sure the dimensions of the window and the type of window match the window seal you’re buying. Make the measurements and calculations beforehand to make sure there is compatibility.

Your portable air conditioner can also have two hoses, so make sure your window seal is dual-hose compatible if that’s the case.

Can I still open my window with a portable AC window seal installed?

For some window seal kits that don’t block the opening of the window, yes, you can open your windows. However, for some, you might have to remove the window seal before opening the windows. However, opening the window with the window seal installed would be quite counterproductive, given why you are installing it in the first place.

Can a portable AC window seal kit be used with sliding windows?

Yes, a portable air conditioner window seal kit can be used with sliding windows, whether they open horizontally or vertically. Just make sure you get the measurements of the window and the outlet hose right before making your purchase.

Conclusion

Having a portable AC window seal kit is an excellent accessory to keep your environment temperate and energy-efficient. These kits prevent the return flow of warm air, thereby augmenting the working of your air conditioner and saving on energy bills. However, not all kits bring the same quality, support, and adaptability.

From the above 5 best portable AC window seal kits, here are the top three expert recommendations:

The Hoome Window Seal for Portable Air Conditioner, due to its versatile compatibility with various windows and easy-to-install design, emerges as the best overall and is an ideal option for those looking for maximized performance and value.

Next, for people looking for longevity, the Jeacent Window Seal for Portable Air Conditioner stands out as the best for durability. Its robust and thick PVC design makes it a good option offering extended service and more bang for your buck.

Lastly, for easy installation and user-friendly adjustments, the Gulrear Window Seal for Portable Air Conditioner takes the crown. If you happen to prioritize convenience and simplicity of setup, this product is the right choice.

To make the most out of these fantastic products, ensure you check out the specifications of each seal kit to match your window and hose sizes before making a purchase. Enjoy the comfort and energy savings that come with having the right seal kit for your portable AC unit.