Little-known plumbing tech gains popularity as US homeowners see major bill savings: 'Three times more energy-efficient than traditional [models]'

Little-known plumbing tech gains popularity as US homeowners see major bill savings: 'Three times more energy-efficient than traditional [models]'

Heat pump water heaters are transforming how Americans heat their water at home, delivering major energy savings and reducing their homes' environmental impacts.  The technology works by moving existing heat from the air into water tanks instead of creating heat through combustion. As a result, heat pump water heaters require much less power to achieve the same (or better) results as conventional systems.  "Heat pump water heaters are an approac…