1. Water First, Power Second. Always ensure the water supply is fully turned on and water is flowing from a hot water tap before switching on the power.

2. Start Low, Test Gradually. Set the temperature or power level to the lowest setting and increase the setting slowly while testing the water temperature with the back of your hand or your elbow.

3. Manage Simultaneous Use. If your model supports multiple outlets, avoid turning all faucets to maximum flow at the same time. Simultaneous full-flow demand may result in a lower output temperature.