Water Heater Overview 
For Natural Gas Customers

High efficiency natural gas water heaters use 10 to 50% less energy than standard models. Actual energy savings from high efficiency water heaters depend on size, heater location, and the size and placement of water pipes.

High-efficiency gas storage water heaters employ the same technologies as standard gas storage water heaters: a glass-lined steel tank is heated by a burner located at the bottom of the tank. ENERGY STAR® certified models increase efficiency by incorporating better insulation, heat traps, and more efficient natural gas burners.
water heater overview, water heater
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