Trying to fit a window AC unit into a narrow horizontal slider? Discover the hidden mechanical reason why this clever space-saving hack usually backfires.

When it’s really hot or humid out, opening a window or turning on a fan only gets you so far, especially when your house feels like it’s holding onto heat long after the sun goes down. If you’ve ever ...

As is the case for many people, my home cannot be retrofitted with central air. My 100-plus-year-old Brooklyn apartment, which features prominently in my seven years of air quality reporting for WIRED ...

Living in a historic Pittsburgh home without central air, window units are not optional for my family. Since our 1904 home has radiator heat and no ductwork, I have used many window-unit and ...

If you live in a space without central air conditioning, investing in an AC unit can be key to keeping you cool throughout the warmer months. Your choice will typically come down to two unit types: a ...