What I learned about what to buy, how to save and what to avoid before plugging in a heat pump water heater.

This will be the first time that the technology will be available for homes.

Merino Energy, a new startup led by a former Apple engineer, created a lower-cost heat pump that launched today.

In a time of global upheaval, we will cleave to the eternal truths. The U.S.-Israeli war against Iran reaches a proposed two-week cease-fire . . . at least on paper. This small nation’s sudden ...