How to Install a Window Air Conditioner in a Sliding Window

Window air conditioners come in handy when you require that cool breeze for a specified amount of time. Moreover, they are more energy-efficient compared to the central air conditioners. One important thing to note is that a window air conditioner isn’t meant to be permanent.

Instead, a window air conditioner is applicable when you need to beat that summer heat or fluctuating temperature. Unlike central air conditioners, a window air conditioner is budget-friendly, making it the most preferred option.

But how do you install a window air conditioner in a sliding window? Here, you’ll get all the necessary information to help you through the entire process.

How to Install a Window Air Conditioner in a Sliding Window


  1. Take Measurements

    Measure the width and height of the air conditioner, and include any vents that might be sticking out. Afterward, take the height measurements of your window’s opening and correlate both measurements.

    This enables you to understand just what measurements are needed to fit the air conditioner.

  2. Create a Frame

    After taking the measurements, ensure that the window windowsill isn’t rotten and doesn’t have any other damages. If it’s in good health, the next step is building the frame to hold the air conditioner in place.

Do this using the measurements you took of both the window and the air conditioner as well. You can use lumber to create the frame and first ascertain that it fits rightly through the window’s opening.

  1. Fit the Air Conditioner in the Frame

    Once you’ve ascertained that the frame fits perfectly in the window’s opening, it’s time to install your air conditioner. When you do this, ensure that the A/C leans back sufficiently and screw it into place.

When finished, you’ll realize that there is a space left on top of the frame, which takes us to the next step.

  1. Cover the Frame’s Top

    This can be done by using plywood of any thickness. But before you cover the top of the frame, first measure its opening. After that, use plywood of similar measurements and screw it on the frame to cover the hole above it.

  2. Install the Air Conditioner in the Sliding Window

    After building the frame accordingly, it’s now time to install it into the window frame. Slide the window against the window framing to make available the space you chose for the air conditioner.

Fit the frame or if you had screwed the air conditioner in the frame, fit them both on the space left by the sliding window. You can screw the air conditioner’s structure against the window’s frame using large screws to tighten it.

Once you are done, you can plug in the A/C and turn it on.

Bottom Line

You are responsible for ensuring that your home or office is as comfortable as possible to live in. In this case, having a window air conditioner in your sliding window will guarantee fresh air for you and a cool breeze at all times. Following the above highlighted steps will ensure that you do an incredible installation job.

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