Add Yahoo as a preferred source to see more of our stories on Google. Deputy project manager Patty Ortiz is framed in the window of a thermal chamber at NASA's Armstrong Flight Research Center used to ...

After years of rapid growth, global heat pump sales are falling. Lower gas prices, reduced subsidies, and installation bottlenecks are leading to lower sales. The technology’s efficiency remains ...

Heat pumps are hot. And when the need arises, they’re pretty cold, too. These high-efficiency electric fixtures heat and cool using your home’s existing ductwork. That means they can replace a ...