A system, comprising: a boiler; a fouling sensor associated with a component of the boiler; a boiler controller device; one or more valves configured to control an amount of precipitator ash purged or sent to an ash cleaning system in order to affect a chloride level; one or more actuators configured to control the one or more valves; and an analysis computing device that includes at least one processor and a computer-readable medium having computer-executable instructions stored thereon that, in response to execution by the at least one processor, cause the analysis computing device to perform actions comprising: receiving boiler operating information for a period of time, wherein the boiler operating information includes boiler operating parameters and a rate of fouling for the period of time, and wherein the boiler operating parameters include one or more boiler input parameters, wherein the one or more boiler input parameters includes a valve setting, wherein the one or more actuators are configured to adjust the one or more valves based on the valve setting; performing a regression analysis to determine at least one correlation between the boiler operating parameters and the rate of fouling; adjusting at least one boiler input parameter based on the at least one correlation to minimize the rate of fouling; and transmitting the at least one adjusted boiler input parameter to the boiler controller device for implementation, wherein transmitting the at least one adjusted boiler input parameter to the boiler controller device for implementation includes transmitting the valve setting to the one or more actuators. a boiler; a fouling sensor associated with a component of the boiler; a boiler controller device; one or more valves configured to control an amount of precipitator ash purged or sent to an ash cleaning system in order to affect a chloride level; one or more actuators configured to control the one or more valves; and an analysis computing device that includes at least one processor and a computer-readable medium having computer-executable instructions stored thereon that, in response to execution by the at least one processor, cause the analysis computing device to perform actions comprising: receiving boiler operating information for a period of time, wherein the boiler operating information includes boiler operating parameters and a rate of fouling for the period of time, and wherein the boiler operating parameters include one or more boiler input parameters, wherein the one or more boiler input parameters includes a valve setting, wherein the one or more actuators are configured to adjust the one or more valves based on the valve setting; performing a regression analysis to determine at least one correlation between the boiler operating parameters and the rate of fouling; adjusting at least one boiler input parameter based on the at least one correlation to minimize the rate of fouling; and transmitting the at least one adjusted boiler input parameter to the boiler controller device for implementation, wherein transmitting the at least one adjusted boiler input parameter to the boiler controller device for implementation includes transmitting the valve setting to the one or more actuators. receiving boiler operating information for a period of time, wherein the boiler operating information includes boiler operating parameters and a rate of fouling for the period of time, and wherein the boiler operating parameters include one or more boiler input parameters, wherein the one or more boiler input parameters includes a valve setting, wherein the one or more actuators are configured to adjust the one or more valves based on the valve setting; performing a regression analysis to determine at least one correlation between the boiler operating parameters and the rate of fouling; adjusting at least one boiler input parameter based on the at least one correlation to minimize the rate of fouling; and transmitting the at least one adjusted boiler input parameter to the boiler controller device for implementation, wherein transmitting the at least one adjusted boiler input parameter to the boiler controller device for implementation includes transmitting the valve setting to the one or more actuators.