Top 10 Window Seal For Portable Air Conditioner in 2022

If you own a portable air conditioner, you might face difficulties regarding its ventilation. It is very inconvenient to leave your window open for ducts to pass through. Not only does the warm air come back but brings with it insects. This is why you need to invest in a window seal for the air conditioner.

A high-quality window seal for portable air conditioner will not only keep your apartment cool but also prevent mosquitoes or any burglar from entering your house. They also maintain the efficiency of your AC and reduce your electricity bill. A window seal further ensures that the air vented out by your air conditioner doesn’t return. So, while it’s necessary to buy one, finding the best one isn’t easy. For your ease, we have done a thorough research and listed some of the best window seals.

List of the 10 Best Window Seal For Portable Air Conditioner in 2022

1. Best Overall: Gulrear Sliding Door Air Conditioner Kit

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  • Manufacturer: Gulrear Store
  • Exhaust Hose: 13cm/5.1 inch
  • Item Weight: 3.89 pounds

The Gulrear sliding door air conditioner kit is one of the finest window seals available in the market. It comes with multiple features that help the AC to maintain proper ventilation. The air conditioner kit is relatively easy to install and comes with instructions. The adjustable plate suits a different window or slide door heights. It is made from durable materials and is portable and lightweight. Moreover, the window seal features a sealing tape posted at the connection between the plate and the sliding door that aptly isolates the warm air from entering the room. Overall, this window kit performs its job well. As alternative, you might want to have one of these smart window air conditioners for your home, no?

Key Features:

  • Simple to install and remove
  • Seals firmly to stop return of hot air
  • Wide compatibility
  • Lightweight and well-sturdy materials
  • Suits different slide door and window heights
  • Ingenuity design

2. Best Runner Up: Jeacent Window Seal Plates Kit

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  • Manufacturer: Jeacent
  • Exhaust Hose: 13cm/5.0 inches
  • Item Weight: 6.39 pounds

Jeacent window seal is a popular vent kit for portable air conditioners. This functional vent kit not only keeps your room cold for a long time but also helps in saving electricity. It has a unique design for easy and effective use. It is perfectly suitable for all portable AC models. Made from durable PVC materials, it fits almost all sliding doors and windows. Moreover, it features all the necessary items required for a practical and convenient assembling of the window seal while ensuring no damage is done to the window. Overall, it is an exceptional product with its own patented design that efficiently regulates the exchange of air while keeping dust and insects away.

Key Features:

  • Universal seal fits – all sliding door and windows
  • Convenient to put together
  • Keep out rain and dust
  • Simple and straightforward to fit and remove
  • Effectively diffuses warm air
  • Adjustable length

Also check: The AC Brackets that Hold Your Window Air Conditioner Steady and Still for 2022

3. Cheapest Of All: HOOMEE Universal Window Seal for Portable Air Conditioner

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  • Manufacturer: Hoomee
  • Exhaust Hose: 400cm/ 157 inches
  • Item Weight: 12.7 ounces

If you are looking for a window seal available at a low price with all the necessary features, then HOOMEE universal window seal would be the right choice. It is a well-designed unit that keeps the warm air from causing discomfort in your living room, bedroom, or office. Locking the AC’s hose between the window frame and window creates a closed environment that is cool and safe.

Moreover, the window seal prevents rain from entering your space if the window is left open. Besides, this widow seal is environmentally friendly as it reduces energy consumption and also emits a low amount of carbon dioxide, both of which are particularly high in summers. Another amazing benefit of this seal is it helps save money on electricity bills. It is a top-notch product with tremendous functionality.

Key Features:

  • Universal seal
  • Well-designed and sturdy
  • Durable and long-lasting
  • Environment friendly to use
  • Creates a cool and safe closed environment
  • Simple to install

4. Best Value For Money: Portable Air Conditioner Window Kit

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  • Manufacturer: Kraftex Store
  • Exhaust Hose: 5.9 inches
  • Item Weight: 1.8 pounds

The Kraftex window seal comes loaded with multiple features. Firstly, it has a compatible design that makes it a convenient fit on almost all windows.  Secondly, this plastic seal can be extended and shortened for the desired installation and works perfectly well both horizontally and vertically. Thirdly, it efficiently uses your AC unit and prevents warm air circulation while saving energy. This product can also be used with window dryer vents. Basically, this product has great quality and is pretty straightforward to install- just slot, slide, and lock into the place!

Key Features:

  • Fit Vertically or horizontally
  • Compatible design
  • Use both vertically and horizontally
  • Well-made and energy-efficient
  • Works smoothly with all windows
  • Made from waterproof plastic

Related: 10 Recommended Window Air Conditioner Covers in 2022 | Review & Buying Guide

5. Best Under $20: HOOMEE Adjustable Hung Window Seal

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  • Manufacturer: Hoomee
  • Exhaust Hose:
  • Item Weight:  6.3 ounces

If you are looking for a window seal that is reliable, budget-friendly, and adjustable, then the Hoomee window seal is the right choice for you. It can be customized in an easy way to fit most gliding windows both horizontally or vertically. Also, it is suitable for all portable air dryers or air conditioners irrespective of the manufacturer.

The Hoomee window seal accommodates up to two hoses and smoothly seals around your window to block the return of warm air. This unit is made from heavy-duty materials and features rugged stitches and zippers that will keep your space cool for many years to come. Moreover, the window seal is water-resistant and works as a mosquito net too. All in all, this product is an excellent investment with its practical features.

Key Features:

  • Adjustable size
  • Budget-friendly and reliable
  • Reduce energy consumption
  • Made from high-quality materials
  • Water-resistant
  • Accommodates two hoses

6. Best design:tBesme Window Seal

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  • Manufacturer: tBesme
  • Exhaust Hose: 13cm/5.1 inches
  • Item Weight: 2.31 pounds

tBesme window seal has a universal friendly design, suitable for all portable air conditioners with diameter 5″ hoses. It can be used variably and installed on all types of sliding doors. Since it is made from durable PVC materials and is lightweight, this product can effortlessly be attached and removed. Moreover, the window seal panels slide smoothly into one another and can be fixed simply with small screws. At the same time, the stable sealing set prevents the warm air from coming back into space. It further comes in a compatible design, which makes it easy to store. On the whole, it is a nice product which works proficiently to serve its purpose.

Key Features:

  • Increases the efficiency of portable air conditioner
  • Made from durable PVC materials
  • Easy installation
  • Durable and lightweight
  • Perfect for use in sliding windows
  • Flexible and user-friendly design

7. Best For Hung Windows: YKB Portable Ac Window Kit

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  • Manufacturer: YKB
  • Exhaust Hose:
  • Item Weight: 9.9 ounces

The YKB widow kit is best suited for single/double-hung windows with 100-150 cm width and sliding windows with 100-150 cm height. Made from water-resistant, environmentally friendly coated fabric, this window seal has wide applications. It can be used with portable mobile AC, dryers, exhaust dryers, purifiers, and dehumidifiers. Moreover, with its adhesive fastener and zipped exchange guards, it completely blocks the return of hot air and insects to maintain a cool and safe environment. It is a well-thought-out unit and worth the money spent on it.

Key Features:

  • Premium material and lightweight
  • Waterproof and long-lasting
  • Wide application
  • Simple to fit and remove
  • Adjustable size
  • Environmentally friendly and waterproof

8. Best To Seal Casement Windows: Window Seal for AC Unit

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  • Manufacturer: Airly
  • Exhaust Hose:
  • Item weight: 8 ounces

Airly is a popular brand known for making innovative, reliable, and effective products. Airly’s widow seal is a universal product that perfectly suits all portable air conditioners and tumbles dryers. It is best suited to seal casement windows and requires no extra installation kit. This window seal comes with a step-by-step installation guide and all necessary tools, making it relatively easy to install and remove. The Airly window seal creates a barrier around the window frame, which prevents the wind from entering your place and allows your air conditioner to work efficiently. It is a great fit to save money on electricity bills.

Key Features:

  • Reliable and energy-efficient
  • Saves money and energy
  • Blocks out all warm air
  • No installation kit required
  • Improves the efficiency of your AC
  • Keep the mosquitoes away

9. Best Durability: Gulrear Portable Air Conditioner Window Vent Kit

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  • Manufacturer: Gulrear
  • Exhaust Hose: 13cm/5.1 inches
  • Item Weight: 2.4 pounds

The Gulrear window vent kit is made from durable materials and comes with strengthening sealing and wide compatibility. It features adjustable plate suits that fit well with most window heights to create a closed environment with proper ventilation. Moreover, the product comes with all the necessary equipment, such as fixing plates, screws, and tape, making it facile to insert the window seal.  Also, there is no need to use additional tools or drill hoses for installation purposes. It is convenient to use in the workspace as well as at home. Overall, this window seal does its job fairly well.

Key Features:

  • Hard-wearing and stable
  • No additional hoses required
  • Simple to assemble
  • Ensures no gap
  • Wide compatibility and Durable design
  • Suitable with all window heights

10. Best In Terms Of Fitting: XINYITUO Portable Air Conditioner Window Vent Kit

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  • Manufacturer: XINYITUO
  • Exhaust Hose: 
  • Item Weight: 2.2 pounds

If you are looking for a window seal that fits in an extremely well manner while ensuring no gap, then the XIBYITUO window seal is the apt choice. It is environmentally friendly and not only obstructs the inflow of warm air but also saves energy. Moreover, you can easily stretch and adjust the window seal’s length to fit your casement height. Made from hard-wearing synthetic plastic polymer, it adjusts on most sliding windows and doors. This kit comes with everything you require to fill the space around your portable AC hose, so no need for you to spend extra cash. On the whole, it is a practical and straightforward product, perfect for use.

Key Features:

  • Environmentally friendly
  • Adjustable length and easy to stretch
  • Saves energy and seals tightly
  • Well-adjustable length
  • Hard-wearing and effective
  • Installation is simple and straightforward


These are some of the best window seals for portable air conditioner available in the market. They all work efficiently to prevent the inflow of warm air back inside your space while also stopping insects, dirt, and rain from entering your space. Made from premium quality, lightweight materials, these products are simple to install and require no additional equipment. They all come with the necessary accessories required for installation and perfectly fits all sliding windows and doors. These window seals are also environment-friendly as they emit less carbon dioxide.

Frequently Asked Questions (FAQ)

Is It Possible To Use A Portable Air Conditioner Without A Window?

Well, a portable air conditioner needs to release heat for effective functioning. A window with a seal is usually the best way for a portable AC to vent heat out. However, there are also other ways of attaching an exhaust tube to an AC or installing a small vent outside the AC that directs heat outside your space.

Why Does A Portable Air Conditioner Require A Window Seal?

A portable air conditioner can be transferred from one room to another, and they don’t require any installation. But they do require a venting area, like a window or wall. These air conditioner units extract hot air, and if you want your room to stay cool, you need to vent the warm air outside. For this purpose, you need a window, but there is a high chance that the hot air would come back and bring with it mosquitoes, dirt, and rain. Here, you need a window seal that will prevent the hot air from coming back.

Is It Simple To Install A Window Seal?

It is quite easy to install as a window seal on all windows and doors. Further, there is no requirement to call a professional as all window seals come with the necessary equipment and an installation guide, which will help you set up the window seal on your own.

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