While a boiler and other components can withstand the rigors of constant service for decades, burners do need to be upgraded or replaced.

The burner is the true driver of fuel use and costs in a boiler. Over time, a burner’s moving parts wear out, and the burner loses its ability to keep tight control of the fuel-to-air ratio. The result commonly is referred to as “hysteresis,” or the inability of a burner to repeat desired excess air levels across the firing range for optimum combustion.

 While a boiler and other components can withstand the rigors of constant service for decades, burners do need to be upgraded or replaced. The practical life of a burner is 10 to 20 years, depending on the type of load (modulating/non-modulating) and site conditions.

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