American Water Heaters Improper Combustion / Incomplete Burning

Gas water heater burner has yellow, lazy flames or produces soot at the draft hood.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Restricted primary air openings, Blocked burner ports, Incorrect gas pressure, Blocked flue or vent

Safety: Soot and yellow flames indicate unsafe combustion and potential carbon monoxide. Turn off gas and ventilate the area.

1. Clean burner: Remove and clean burner ports with a brush and compressed air.
2. Check air openings: Ensure combustion air openings at the base and jacket are not blocked.
3. Inspect vent: Verify the vent is clear and properly installed.
4. Gas pressure: Have a qualified technician check and adjust gas pressure.

Professional Required 5/5

Main Burner Assembly

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