How is the output of an immersion type electric boiler controlled?

The output of an immersion type electric boiler is controlled primarily by turning the power on or off. This method allows for straightforward and precise control over the heating elements of the boiler. When the power is turned on, the electric current flows through the heating elements, producing heat and converting water into steam or hot water. Conversely, when power is turned off, the heating process ceases, which allows for effective regulation of the boiler's output and temperature.

This control method is advantageous because it is a simple mechanism that can be automated with thermostat controls or manually operated, helping to maintain the desired water temperature and ensure the system operates efficiently without unnecessary energy consumption. Other methods, such as short-circuiting elements or controlling the basket level, do not provide the same level of direct control over the heating process.