Did you know that 18-20% of your overall utility cost comes from heating hot water? It's true!
To save on water heating, be sure your water heater is set no higher than 120 degrees.
Test your water temperature by simply putting your hand under the running hot water. If you can stand it, you're temperature is right. If it's too hot to keep your hand under the water, you need to lower the temperature on your water heater.