The way portable and window AC units operate is the most significant factor that determines their cooling capabilities. The Windmill was the top-performing window AC unit in our tests, while the Black ...

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 ...

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 ...

Window air conditioners can be lifesavers during the hot summer months, especially in older homes or apartments without central air. But while they offer targeted cooling, they can also drive up your ...

No central AC? As the National Weather Service warns of dangerous heat across much of the US next week, we tested dozens of air conditioner units to see which delivers the best cooling performance.