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"  If a water heater is warm to the touch, it is wasting power. A homeowner&amp;#039;s simplest solution is to add a fiberglass insulation blanket. Fitting a blanket to an electric heater is straightforward -- just cut holes for the heating elements. With gas heaters, be careful not to block airflow to the burner. The pipes also can be insulated with sleeves, particularly within 3 ft. of the storage tank. Insulation costs only $30 or so, yet it can cut as much as 10 percent off your monthly bill. Heat loss also occurs through the convective flow of hot water into the pipes. Stop the flow with heat traps -- one-way valves or loops of flexible pipe. They cost about $30, and typically pay for themselves in one to two years.  Your Water Heating Energy Footprint   * Top 5 Water Heater Energy Saving Tips * How to Mine Heat From Your Drain * How to Insulate Your Hot Water Heater  "^^<http://www.w3.org/2001/XMLSchema#string>
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