On an electric water heater the temperature can be changed under the 2 panels where the heating elements are located.
Electric water heater temperature control.
On a gas water heater the temperature can be changed on the bottom of the tank where the temperature dial is located.
Electric water heaters often have two thermostats one at the top and another at the bottom of the tank.
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.
The typical thermostatcontrol is adjusted by using a screwdriver.
Step 3 locate the two covers on the front of your water heater.
The covers will be almost identical in size and rectangular in shape.
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The thermostat has a visible scale and is adjustable byturning the control to the desired temperature.
And most tankless water heaters feature a display with a temperature readout and controls.
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The temperature of an tank type electric water heater is controlled by athermostat.