These ACs from Frigidaire, GE, LG, and Midea can keep things cool and quiet while you sleep U-shaped air conditioners like this Midea can run quieter because they use your window to block out noise.

Portable air conditioners sound like an easy solution for cooling a room that can't accommodate a window air conditioner. But many are returned by unhappy customers. So Consumer Reports tested to see ...

Sure, a quiet air conditioner is nice during the day, but it’s essential at night when you’re trying to sleep. That’s why, in addition to testing how well air conditioners cool a room, we also rate ...