Digital controllers allow you to select the exact temperature of the hot water at the outlet. This has a number of benefits:
- Safety, especially if you have young children, the hot water can be pre-set to a child-safe level
- No need to mix hot and cold water, this reduces the changes in water temperature when another tap in the building is turned on
- You use your continuous flow unit more efficiently as less gas is required to heat water to 40 °C (typical shower temperature) than at 55 °C (which is the default temperature without controllers)
- Highlights any problems (disruption in gas supply etc.) by displaying error codes on the controller
