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 ...

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 ...

A step-by-step guide to securing a window air conditioner and filling in the space around it. Q: I am renting a small, old home without central air conditioning. I have a window air conditioner, and ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› Advice, staff picks, mythbusting, and more. Let us help you. Published June 27, ...