Top choices for small, midsized, and large rooms from Frigidaire, LG, Midea, and more Window air conditioners from LG, Frigidaire, and Midea (left to right) are among the models that top CR's ratings ...

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.