When it comes to saving energy, should your home be utilizing a tankless or storage water heater? We have the expert-approved ...

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

These water heaters are far more energy-efficient than conventional options. We put 10 models to the test.By Yasmeen KhanHeat ...

Researchers in Italy have designed a water-source heat pump system intended for generating cooling, heating and domestic ... system adopts a hot water storage tank instead underground heat storage ...