Article: Hot water with less worry.

Water heating accounts for approximately 15 percent of the average household's total energy consumption (and a sizable chunk of its energy costs). If your water heater is more than 10 years old it is likely running at less than 50 percent efficiency--wasting energy and money--but most people don't replace their water heater until it fails. Upgrading to a new, more efficient model will lower not only your monthly expenses, but also your contribution to air pollution and global warming.

Before you shop for a new water heater, however, make sure you've done everything you can to minimize your hot water use. Install water-saving fixtures and appliances, for example, ...

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