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 ...

The difference between a good air conditioner and a great one isn’t just how quickly it cools a room—but also how quietly it does so. On a hot, still summer night, a quiet air conditioner may be the ...