All Scenarios

Soot Buildup / Poor Combustion

Stack temperature has been trending upward over several days. Black smoke is occasionally visible and fuel consumption is increasing.

Symptoms you observe:

Rising stack temperature over timeBlack smoke from the stackIncreased fuel consumptionReduced boiler efficiencyPoor heat transfer
Step 1 of 4Decision Point

Analyze flue gases (O2, CO2, CO levels)

Flue gas analysis reveals whether the air/fuel ratio is correct or if combustion is incomplete.

What would you do?