State water heater (gas or electric): water is too hot at fixtures.

Safety: Extremely hot water can cause scalding. Use caution when testing water temperature.

• Check thermostat setting: For gas models, set the knob to a lower setting (e.g., 'Hot' or ~120°F). For electric, adjust the thermostat screws to 120°F.
• Verify with thermometer: Measure hot water temperature at a faucet after allowing the heater to cycle.
• Replace thermostat: If water remains excessively hot despite a low setting, replace the thermostat or gas control.
• Mixing valve: If a thermostatic mixing valve is installed on the outlet, adjust or replace it if it is not regulating properly.