Window AC units are generally more affordable and can be installed by two people in two hours. DIY-ing the job saves you an installation bill of $140 to $500, depending on the type of unit. You ...

Installing a window air conditioner is typically a straightforward DIY process that can quickly transform a muggy room into a much more comfortable space. If you have any questions about your ...

Consumer Reports' step-by-step window air conditioner installation instructions will prevent damage to your unit and prevent it from falling out of the window.

If you're installing a window AC into a horizontal sliding window, you may wonder how to tackle the opening above. As you'll see, there's a simple workaround.

Most units are intended for double-hung windows. If you have casement windows, you may want to consider a through-the-wall air conditioner. Make sure your window unit is level so it drains correctly.