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Answered 2010-04-13 23:44:00
There is no single answer to this question. Water heaters with Energy Star certification are your best bet. However, the important considerations are what you need. If you get the right size, set the right temperature, and insulate your water heater, that will make more difference than the specific brand.
The most energy efficient hot water heaters are tankless. Check your local Home Depot or Lowes for pricing and installation information.
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