We may receive a commission on purchases made from links. A window air conditioner can be a lifesaver in a heatwave, but how do you install one in a horizontal sliding window? Most window air ...

Lee Wallender is a home improvement writer of nearly 20 years and specializes in home remodeling, repair and maintenance. Cassidy was an updates editor whose main responsibility is to write and edit ...

Most in-window air conditioners are meant to fit inside vertically-sliding windows only, meaning those with larger, horizontally-sliding windows in their house are left out. DIY web site Instructables ...