Weil-McLain water heater burner is very noisy, with roaring or whistling sounds during operation.

Safety first: Turn off power and gas if you suspect unsafe combustion. Carbon monoxide and fire hazards are possible.

• Visual inspection: Look at the burner flame through the sight glass. It should be stable and mostly blue. Lifting, roaring, or yellow flames indicate problems.
• Check for debris: Inspect the burner area for dust, lint, or foreign objects. Clean with a soft brush and vacuum.
• Do not adjust gas settings yourself: Gas pressure and air settings must be checked and adjusted by a qualified technician using proper instruments.
• Schedule service: Persistent abnormal noise requires professional combustion analysis and burner cleaning or adjustment.