Run an indoor hot water faucet for two to three minutes. Place a meat or candy thermometer in the hot water flow and take its reading. If the reading is over 130 degrees Fahrenheit, the water temperature should be turned down.
Locate the home's water heater, usually found in the cellar or buildup area. Turn the heater's dial downward slightly.
Wait 24 hours and then check the same hot water faucet again with the thermometer. Repeat this process, if necessary, until the water temperature measures between 124 and 130 degrees Fahrenheit.
Turn on the cold water faucet first so that it produces a trickle. Then turn on the hot water faucet so that the stream is medium pressure. Test the water temperature with the tip of a finger. If the water is too cold, reduce the cold water faucet's flow. If it is too hot, increase the cold water flow until the desired water temperature is reached.