Water heating is the second-largest energy cost for U.S. households. But you can save with a more efficient water heater, ...

Consumer Reports tested heat pump water heaters to determine which ones were the most energy-efficient and fastest at heating water.

"Is it a good or bad idea from an efficiency standpoint ... ?" Cautious homeowner seeks unbiased advice about replacing water ...

Behind the scenes, the device strategically capitalizes on when energy is cheaper. Next-gen water heaters can predict the future to save you from lukewarm showers and high electricity bills first ...