Stiebel Eltron electronic instantaneous water heaters with LCD displays are among the modern solutions for hot water supply in apartments and single-family homes. The unit features electronic power control, which automatically adjusts the heating output to the current water consumption, thus ensuring a constant water temperature. A key feature is the LCD display, which allows for precise temperature setting and monitoring at any time. Compared to mechanical models, this offers significantly greater convenience and transparency in daily operation. The compact design facilitates installation, even in confined spaces. However, as with all electronic instantaneous water heaters, the actual performance depends heavily on the available electrical power and water pressure. Heating performance may be limited with high flow rates or weak water supply. It should also be noted that the electronic control is more sensitive to voltage fluctuations than simple hydraulic units. Therefore, effective surge protection is recommended for long-term reliable operation.