On a gas water heater the temperature can be changed on the bottom of the tank where the temperature dial is located.
Electric water heater temperature control.
On an electric water heater the temperature can be changed under the 2 panels where the heating elements are located.
The covers will be almost identical in size and rectangular in shape.
The typical thermostatcontrol is adjusted by using a screwdriver.
An electric water heater has two heating coils one each at top and bottom and each needs to be adjusted to the same temperature.
Electric water heaters often have two thermostats one at the top and another at the bottom of the tank.
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Step 3 locate the two covers on the front of your water heater.
The thermostat has a visible scale and is adjustable byturning the control to the desired temperature.
Remember the recommended minimum temperature is 130 degrees.
On the other hand the epa suggests turning the thermostat down to 120 to reduce power consumption and a booster heater to reach sanitizing temperatures at select outlets.
Water heaters are factory set at osha recommended levels around 140 degrees.