Looking to save on hot water? A heat pump water heater could slash your energy bills -- if your home is a good fit.

Solar water heaters have two parts: a collector and a circulation system. The collector is mounted on the roof and stores and heats the water, and the circulation system transfers the water to ...

The number of years of energy savings (from a new water heater) needed to cover the purchase and installation costs of replacing an existing water heater. The number of years of energy savings ...

The number of years of energy savings (from a new water heater) needed to cover the purchase and installation costs of replacing an existing water heater. The number of years of energy savings ...