awning window being prepared for portable air conditioner installation

How To Install Portable Air Conditioner In Awning Window?

The portable air conditioner is a great solution for cooling small to medium-sized rooms. It cools your space quickly, saves you money, and gives you efficient service for a respectable number of years.

However, for the portable air conditioner to work optimally, it needs to be properly vented. With the different types of windows in homes, installing portable air conditioners can become quite tricky, especially with awning windows. Despite the dilemma, there are solutions to solve the problem.

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Can I Went A Portable Air Conditioner Through An Awning Window?

Yes, you can connect your portable air conditioner to the awning window and vent it outside.

If your room has this type of wind out window, please keep reading to learn about several ways how to install a portable AC in an awning window.

Can I Put A Window Air Conditioner In An Awning Window?

Yes, you can put a window air conditioner in the awning window but it will require a lot of preparation. In short, you will need to remove the moving part of the window and install the wooden plate and the AC unit in the opening.

Installing A Portable Air Conditioner In An Awning Window

Awning windows are crank windows that open outward from the bottom and have hinges installed on the top. Awning windows allow good room ventilation and prevent falling objects such as leaves and rain from entering the house. Sometimes fly screens are installed on the inside to prevent insects from entering the room.



Awning window

Venting a portable air conditioner can be a challenge. Even though many portable air conditioners come with window kits, it is not easy to find the one that comes with a window kit for awning windows.

However, with the right equipment and techniques, the challenge of installing the portable air conditioner in the awning window can be met and perfectly mastered. There are several ways to do this.

Can I Simply Buy Air Conditioner Awning Window Kit?

No, unfortunately, there are no air conditioner awning window kits for sale. At least I was not able to find them. If you know where to buy such kit (awning window kit, not the regular window seal!), please let me know in the comments.

Install A Window Seal

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One of the most practical ways to install mobile air conditioning in awning windows is to use a window seal. Window seals are specially designed for this purpose.

To do this, we first need to measure our awning window. Then, with the measurements, go to a local store or order a window seal in the appropriate size online.

The installation of a window seal is very simple. First, we clean the frame and sash of the awning window. Let it dry. Then we attach the Velcro strips to the frame and the casement. Next, we take the seal and attach it with the Velcro strips on all sides.

Now open the window slightly and open the zipper in the seal. Squeeze the air hose of the air conditioner through the zipper. Secure the hose with a zip tie to keep it secure. That is how you install a portable air conditioner with a window seal in awning windows.

Install A Polycarbonate, Plexyglass, or Plastiboard Sheet In Window Frame

The idea here is to install a sheet of transparent material in the window frame with an attached AC hose while keeping the awning window open.

@dreamydebc Installing an air conditioner in a window that pushes out part 2. #sleepcool #airconditionerinstallation #bestsleep @dreamydebc ♬ original sound – Life Hacks✨✨✨


You can also use polycarbonate to install a portable air conditioner on your awning window. To get the polycarbonate, go to your local hardware store and ask for a supplier of 1mm polycarbonate. You can also get it from a plastic sheet supplier.

Do not take anything thicker than 1mm, as it’s too thick to score. There’s also a risk that the polycarbonate will crack. So cut the polycarbonate according to the dimensions of the window.

If you use a 1 mm sheet, you can easily score it with a Stanley knife. Score the hole for the vent on both sides of the panel about a dozen times. This can take a lot of time and bending back and forth. Keep doing this until you can pry the hole out.

You can also tape the whole sheet to the window casement with sticky Velcro. Cut two holes for portable dual hose air conditioners. You may need some extra tubing for this. This solves the complexity, and your AC will work quickly.

Don’t use acrylic sheets to replace the glass, as they may break. Also, acrylic sheets can have serious health consequences if they contact heated objects. Therefore, it’s much better to use polycarbonate.


One way to vent your portable air conditioner in the awning window is through Plexiglas. To do this, you’ll need to go to your local hardware store and get a piece of Plexiglas cut to the appropriate dimensions. You’ll also need a roll of self-adhesive Velcro tape.

This is a very cheap and long-term solution that’s probably ideal for awning windows. You’ll also need to cut a hole in the Plexiglas for your vent hose. Remember that the plexiglass must be cut to the size of the window.

You need to install a plexiglass sheet with a hole for the portable air conditioner’s exhaust vent in the window frame. Stick the Velcro on the window (the part that moves) and the window frame (the part that holds the window closed).

In this way, you can conveniently attach the exhaust hose of the portable air conditioner. If you use a double hose, you need to cut two holes according to the dimensions.

Plastiboard and Pegboard

As with most other portable air conditioners, if the portable air conditioner is equipped with a window slider and vent connector, you can also attach it to your awning window using a plastiboard. If the window slider and vent connector are separate, you can connect the vent connector anywhere.

First, go to your local hardware store and get a large plastiboard (the corrugated plastic sheets used for signs). Then cut it to the size of your awning window. Cut a hole in the plastiboard near the “bottom” (that’s the bottom where it’ll be installed) and screw the vent connector to the plastiboard.

Then tape the plastiboard to the awning window casement and attach the hose to the vent flange. However, if your portable air conditioner generates a lot of heat, the plastiboard may sag, the duct tape may come off, and the gasket may break.

This can allow hot air to get in. One way to solve this problem is to use long, thin wooden stiffeners on the sides. This might compromise the aesthetics of the window, but it’s worth a try.

You can also use a thin sheet of wood, I.e., pegboard without holes. You can find them at your nearest hardware store. They are water-resistant on one side and look better than plain wood. Also, it’s very cheap and sturdy and can hold screws if you figure out a way to screw the hoses in.

Other Alternatives

None of these methods is perfect. One of the most significant disadvantages of awning windows is that they cannot be heavily modified. Therefore, it’s best to find alternative ways.

One possible albeit expensive alternative is to remove the awning window and instead install a sliding window or casement window. Portable air conditioners are more suitable for these types of windows. They’ve come with an arrangement that facilitates installation.

Another alternative is to forgo the window and use a ceiling or wall installation. If you install portable air conditioners with a hole in your ceiling or wall, you will get a sturdy and durable setup without sacrificing the pleasure of your window.


Installing a portable air conditioner in awning windows can be quite a complicated job if you don’t have enough experience in using portable air conditioners.

However, the above methods are effective, and if you follow them, you can accomplish the task on your own with ease.

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