Size matters when you’re buying a window air conditioner. An air conditioner that’s too small will struggle to keep a room at a comfortable temperature. A model that’s too big will cool a room too ...

When the mercury rises and the air stays hot and humid even after the sun goes down, you’ll need to find a way to stay cool. Many older homes don’t have whole-house air conditioning systems, which ...

Find the right window air conditioner for your space and you’ll stay cool all summer long—and save a bundle in the process. Our editors and experts handpick every product we feature. We may earn a ...