Water is warm but not hot enough, even with EcoSmart temperature set to maximum.

Safety: Most checks can be done with power on, but testing elements requires power OFF.

• Check setpoint: Confirm the EcoSmart set temperature is at the desired level and not limited by a child lock or external control.
• Reduce flow: Partially close the hot water valve at the fixture or install low-flow aerators/showerheads to reduce flow and increase temperature rise.
• Seasonal expectations: Recognize that very cold winter inlet temperatures reduce maximum achievable outlet temperature for a given heater size.
• Test elements: With power OFF, test each heating element for proper resistance. Replace any open or weak elements.
• Capacity check: Compare your EcoSmart model’s rated GPM at your inlet temperature to your actual demand. If undersized, consider upgrading to a larger model or adding a second unit in series.