The Rinnai RL75iN is a powerful, high-performance tankless water heater that guarantees a steady and efficient supply of hot ...

A water heater is one of those home appliances that you don't think about until it stops working. However, a water heater can be a major energy eater, whether you're buying one for a new home or ...

Geothermal energy has been limited to places with subtera reservoirs of hot water. A new technology being proven in Utah is expanding it to exploit dry hot rock underground. A new type of climate ...