How To Install a Window Air Conditioner on a Sliding Window?
Are you wondering how to install a window air conditioner on a sliding window? This step-by-step guide will walk you through the process of installing a window air conditioner on a sliding window. We will talk about both topics:
- How to Install a Window Air conditioner on a Horizontal Sliding window?
- How to Install a Window Air Conditioner on a Vertically Sliding window?
By the time you finish reading, you’ll have all the information you need to make sure your window air conditioner is installed properly. So let’s get started without any delay.
Tools you will need to install an Ac unit on sliding windows
Before starting the installation process the most important thing you need to do is to gather all the required tools and equipment that you will need to install your window air conditioning unit on a sliding window.
When you have all the necessary tools it becomes super easy to install the unit. Your efficiency of setting up the unit will skyrocket. Here are the tools you’ll need for installation:
- Screwdriver: A flathead or Phillips head screwdriver will be needed for tightening screws.
- Screws: To secure the mounting bracket to the window frame and to secure the unit to the mounting bracket.
- Level: To make sure your air conditioner is level before securing it in your window.
- Tape Measure: You will need a tape measure to measure the dimensions of your sliding window to ensure the AC unit fits properly.
- Electric drill: For drilling holes in window frames. (If needed)
- Weather stripping or foam insulation: To seal gaps around the air conditioning unit to prevent drafts to maintain and improve the unit’s energy efficiency.
- Ladder: To reach the window if it’s really high enough to reach.
- A helper: It can be difficult to install the unit if the unit is heavy. Having an extra helping hand will make the job a lot easier.
A step-by-step to Install a Window AC unit on a Horizontal Sliding Window
Here are 7 simple and easy steps to install a window air conditioner on a Horizontal sliding window.
Step 1. Take a Measurement of your unit
Taking proper measurements of your window air conditioner is essential to ensure that your unit will fit correctly on your sliding window without leaving any gaps on the side.
Measure the height and width of the unit and your window using a tape measure. It would be good if it is smaller than your window, and better if perfectly sized. However, it would be a disappointment for you if your unit is larger than the window.
And obviously, it’s your fault. That’s why choosing a perfectly sized unit is super important.
Learn: How to measure a window AC unit?
Step 2. Install the window air conditioner support bracket
Before you install the actual window air conditioner, you’ll need to install the support brackets. The bracket looks something like this:
This bracket will help secure the unit and provide additional support for the weight of the AC unit so the unit does not topple over onto the street.
To get started, measure the width of your window opening, then buy a bracket that’s specifically designed for this size window.
But if you have a little bit of knowledge of cutting and screwing then you can make it yourself of wood,. Either way, you can hire someone for the job. Otherwise, you can buy a metal support bracket from here.
To install the bracket, you’ll need to use an electric drill and some screws. The screw should be long enough to go into the edge of the window frame and into the threshold.
For maximum stability, it’s important to attach the brackets to the solid wood framing, rather than just the window frame. Also, use a level to check that the bracket is properly aligned.
Once you have installed the brackets, you can proceed to install the air conditioner. But before that, make sure that the bracket is securely attached to the wall.
Learn: How To Install a Window Air Conditioner Support Bracket?
Step 3. Assemble the AC Unit
Before you install your window air conditioner on your window, it needs to be properly assembled. Depending on the model, this may require some assembling, or it may come ready to install.
But most of the window unit needs to be assembled. Assembling the unit is just about setting up the accordion panels. The purpose of accordion panels is to seal the rest gaps that are left after putting the unit on the window.
This helps prevent air leaks that helps maintain your unit efficiency. It just only needs to slide out and put a screw between them so that it won’t slide in.
By the way, if your unit fits snugly in your window then you don’t need to set up the accordion panel, you can skip this step.
Step 4. Put the unit on the window
Now, it’s time to mount the window air conditioner to your sliding window. Place the AC unit on the support bracket. If the unit is heavy, feel free to have someone help you. Otherwise, the unit will fall on someone’s car in the street.
Also, if your window is at such a height that you are unable to reach, then definitely use a ladder, this will help you lift the unit.
In addition, keep in mind that the sides of the AC unit are lined up with the sides of the support brackets. And also check that there is no slope. I know it is good to have a slope but too much slope is bad.
So to elevate the unit, simply put some wood in the bottom of your unit to lift it up a bit. Then double-check that the unit is in place before securing it.
Step 5. Secure the unit
Once your window air conditioner is in place. It’s time to secure it in its place for safety and stability. To do this, use the mounting screws that came with your air conditioner and attach them to the support bracket.
And use foam insulation then mount it to the window frame, something like this:
If your window air conditioner has additional side braces, use foam insulation to further strengthen the unit. Once everything is secure, make sure the air conditioner is properly balanced.
Step 6. Weather-proofing and Insulation
After you have secured the window air conditioner to your horizontal sliding window. It is time to insulate the area around it. This will help keep cool air in and warm air out, making for the most efficient use of your energy costs.
The most important thing you can do is seal any gaps between the unit and the window frame using foam insulation strips, and if you drilled any holes be sure to fill them using putty.
You should also install weather stripping around the perimeter of the unit, to prevent any further heat transfer. Better insulation equals better energy efficiency.
Step 7. Connect your window AC to the power
Once you waterproof and insulate your unit, you will need to connect your window air conditioner to the power. Plug the cord into an electrical outlet and turn on the power.
Make sure to read the instructions that come with your unit for specific instructions on how to adjust the temperature.
Now you have successfully installed your window air conditioner on a horizontal sliding window, you can now enjoy your newly installed window air conditioner!
How To Install a Window Air Conditioner on a Vertical Sliding Window? A step-by-step guide
To be frank, installing a window air conditioner on a horizontal sliding window is usually easier than installing a window air conditioner on a vertical sliding window.
But to make it easy for you, here is a step-by-step guide to install a window air conditioner on a vertical sliding window. Let’s get started without any delay.
Extra tools you will need to install a window AC unit on a vertical sliding window
- A cross piece of wood
- A proper sized piece of plexiglass
Step 1. Take a proper measurement of the window AC unit
First of all, take proper measurements of your window ac unit along with height and width. Also, take measurements of your window opening (height and width).
Step 2. Install the support bracket
After that install a window support bracket, you can either buy it or make it yourself from pieces of wood. Installing the window support bracket is essential when installing a window air conditioner as it helps to securely support the weight of the unit to rest on.
Step 3. Set up the accordion panels
Once you’ve successfully installed the window brackets, it’s time to set up the accordion panels. It is very easy to set up, once you see it you will get the idea to do it. This is pretty much different in each window unit, but not difficult.
Step 4. Attach the unit with a cross piece
After setting the accordion panel, you’ll need to attach the window unit with a cross piece. This step is crucial to do. If you neglect it, your unit will not insulate and you will lose money on energy bills.
You will need to attach the cross piece of your unit to something like this and secure it with screws.
Check that the screws are secure, but not over-tightened. Generally, the cross piece should be as long as the width of your window opening.
Step 5. Place the unit on the vertical sliding window
Now, position your unit on your vertical sliding window, and make sure it’s in place. And of course, don’t hesitate to have someone help you lift the unit over the window if it’s heavy, and use a ladder if your window is elevated.
Step 6. Secure it with screws
After positioning the unit, secure it with the screws and tighten all but don’t be crazy. Fill any gaps with foam insulation, if there are any. The better you insulate it, the more energy you’ll save. But this is not the only factor that will decide the efficiency of your unit.
Step 7. Install a piece of plexiglass
Once you have successfully installed your window air conditioner on your vertical sliding window. Next, add a piece of Plexiglas to cover the rest of the window opening.
Most people I’ve seen use plywood sheets to cover the rest, but I wouldn’t recommend plywood, as it will block the natural light coming into your room, so if you want to let the natural lights enter in your space use a piece of plexiglass.
To install the Plexiglas, begin by measuring and cutting the Plexiglas to fit the window opening. Then, attach the plexiglass using silicone caulk or screws.
Check that it is securely attached and there are no gaps between the plexiglass and the window AC unit.
Once the plexiglass is installed, you can proceed to add any additional insulation or weather stripping if desired, and yes it is recommended. This will help protect your window AC unit from drafts of cold air during the winter months.
FAQ: How To Install a Window Air Conditioner on a Sliding Window?
Here are some commonly asked questions about installing a window air conditioner on a sliding window. Customers always ask these questions when we visit their homes to install window ac units on their normal windows or sliding windows.
Q1. Can I install a window air conditioner on my own or should I hire a professional?
Ans: Yes, you can definitely install a window air conditioner on your own by watching videos from YouTube or reading blog posts like the one you are reading. However, if you have the budget, you can hire a professional for this job. Installing a window ac unit is not difficult, if you follow the right steps you will do it nicely.
Q2. Why is it important to use weather-stripping when installing a window air conditioner?
Ans: Using weather-stripping is important when installing a window air conditioner as it helps create a tight seal around the AC unit, preventing air from escaping or entering through gaps around the unit. It helps to increase the efficiency of your unit and reduce energy wastage.
Q3. What is the purpose of a window support bracket in window air conditioner installation?
Ans: The purpose of a window support bracket is to provide stability and security to the air conditioner when it is installed in a window. Support brackets help evenly distribute the unit’s weight and prevent it from tipping or shifting.
Q4. What should I consider when installing a window air conditioner in a rental property?
Ans: The most important thing to consider when installing a window air conditioner in a rental property is not to drill any holes, as most landlords are reluctant to drill any holes. By the way, If you have the approval to do so, you can do it, but don’t be crazy.
My final thoughts on how to install a window AC on a sliding window
Window air conditioners are great for keeping you cool during the hot summer months, but installing one when your sliding windows are a little tougher. But it does mean that it can’t be done.
With the right tools and a little knowledge, you can have a properly installed window AC in no time. Most people hire a professional for this work, it is not necessary at all. If you’re a DIY enthusiast or just want to save a little money, you can do it yourself.
In this post I have mentioned both how to install a window air conditioner in a horizontal sliding window and a vertical sliding window. And breaks it into steps to make it actionable as possible. That’s all for this post. Here are more from us like this one:
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- How to reduce the noise level of a window ac?
- Is is possible to vent a portable air conditioner without a window?
- How I can conceal my outside air conditioner?