Experts recommend setting your AC between 72°F and 78°F when home and raising it about 7°F when away to save energy without sacrificing comfort. At night, you can bump the temp up by 4°F or rely on ...

As much of the U.S. copes with blistering heat, air conditioners have been humming, aiding comfort and survival. But what's the best temperature setting during a heat wave? And what can you do to help ...