For the average family of four, you can't go wrong with the Rinnai Condensing Tankless Water Heater ... about $130 a year to operate. It's Energy Star-certified, and you'll have enough water ...

If you own an electric water heater, it's a good idea to install a timer ... Choose an energy-efficient appliance by looking for ENERGY STAR(R) certified heaters, which are designed to meet strict ...