The highly efficient devices are the darlings of the environmental movement. Here’s why. By Hilary Howard Heat pumps, which both warm and cool buildings and are powered by electricity, have been ...

The systems, which can store clean energy as heat, were chosen by readers as the 11th Breakthrough Technology of 2024. We need heat to make everything from steel bars to ketchup packets. Today, a ...

Heat pumps electrify your heating and cooling to be more efficient. New technology could solve one of their lingering problems. Jon covers artificial intelligence. He previously led CNET's home energy ...

Three years ago, Ted Treadwell turned his water heater into a battery. His home in Santa Rosa, California, had relied on a gas-powered furnace and water heater for a quarter-century to stay warm. But ...