Water is warm but not hot enough; temperature lower than setpoint across all fixtures.

Safety: Turn OFF power before removing covers; turn OFF gas before burner work.

• Check setpoint: Confirm the Alpha control panel temperature is set to the desired level (typically 120–130°F / 49–54°C for residential use).
• Electric models: Test both upper and lower heating elements and thermostats for continuity. A failed lower element often causes lukewarm water.
• Gas models: Inspect the burner assembly for dust or debris and clean as per Alpha instructions.
• Descale: If in a hard water area, descale the Alpha heat exchanger or flush the tank to remove sediment that reduces heat transfer.

If temperature remains low after these checks, a faulty thermostat or control board may be limiting output and should be replaced by a professional.