Can you put a window air conditioner in a casement window?

If you don’t have central air conditioning, you can use traditional window units to effectively cool your space. However, most window air conditioners are difficult (or impossible) to fit into vertical or sliding casement windows. If you use these kind of windows, you’ll need specially-designed AC units.

Can you put an AC sideways in a window?

The only time you can install a window air conditioner vertically — which is done when the window slides open from side to side instead of up and down — is when the air conditioner itself has a vertical design. If you turn a regular air conditioner on its side to fit a window opening, you’ll damage the appliance.

How do you install a casement air conditioner?

These instructions assume that the unit will be installed on the right side of the window.

Install the Support Base on the Windowsill.
Determine the Center Point.
Begin Installing the Platform Assembly.
Finish Installing the Platform Assembly.
Position the A/C Unit in the Window.
Make Sure the A/C Is in Proper Alignment.

Does a window air conditioner have to be in a window?

Unfortunately, window units are specifically designed to operate mounted in a window. While you can’t run a window unit without a window, you can run a portable air conditioner sans window as long as you have another way of accessing the outside.