A water heater burner is the combustion component in gas or propane water heaters that burns fuel to generate heat for water warming. Located beneath or adjacent to the tank, the burner produces an open flame that heats the tank’s exterior, efficiently transferring thermal energy to the water inside.
Technical Details
Natural gas burners typically operate at 35,000-40,000 BTU/hour input, while propane models operate similarly with proper orifice sizing. The burner assembly includes the gas valve, pilot light or electronic ignition, burner tube, and flame arrestor. Modern burners feature sealed combustion chambers and electronic controls for safety and efficiency. Annual inspections and cleaning maintain optimal performance and prevent carbon buildup.
Safety and Maintenance
A malfunctioning burner may produce incomplete combustion, creating carbon monoxide risks. Yellow or orange flames indicate improper combustion requiring immediate professional service. The pilot light should burn consistently; failure suggests thermocouple issues or gas supply problems. Proper venting through Category III or IV vent pipes ensures exhaust gases exit safely. Most burner repairs require licensed technician involvement due to gas safety concerns.