How is an electric heater hot water heater turned on?

Answer 1

There is a thermostat inside an accessible panel on the hot water heater. The panel is typically secured by two screws. When the temperature goes below the set level the heater turns on. You'll either see a specific temperature or just an adjustment that says hotter. Some installations have an external timer that might turn off the hot water heater between midnight and 5AM, for example.

Answer 2

An electric water heater is typically turned on by locating the power switch on the unit or on the circuit breaker panel, then flipping the switch to the "on" position. Some heaters may also have a temperature control setting that needs to be adjusted to activate the heating element. Always follow the manufacturer's instructions when operating an electric water heater.