If you use hot water mainly for hand washing, chances
are your tank has a setting that is higher than necessary (Table
7).
To check the accuracy of your tank’s temperature gauge,
you’ll need to test the hot water with a good thermometer at the faucet nearest
your water tank, as well as at the dishwashers or washing machines if you use
them.
The temperature gauge should be plainly visible on your
tank, but in some cases you’ll have to remove a plate to see it. If you’re adjusting
an electric water heater, be sure to shut off the power first.
