Determine your boiler’s flue gas loss and the resulting combustion efficiency. With just a few details about the fuel, flue gas temperature and combustion air temperature, you can obtain an initial assessment of your boiler’s energy performance.
Calculate the flue gas loss and combustion efficiency of your boiler by entering the fuel type, flue gas temperature and combustion air temperature.
Combustion efficiency
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Note: This simplified calculation does not replace a professional flue gas measurement, verification of applicable emission limits, or assessment of specific plant and fuel conditions. Your inputs are processed locally in your browser only.
The calculated flue gas loss indicates the share of fuel energy leaving the boiler unused with the flue gas. The higher the loss, the lower the boiler’s combustion efficiency.
The result provides an initial assessment. Actual operating conditions, measured values and the specific boiler design must be considered for a reliable evaluation.
Make energy losses visible
The calculator shows how much heat is lost through the flue gas and how efficiently your boiler is operating.
Identify saving potential
A high flue gas loss can indicate unused heat and avoidable fuel consumption.
Assess measures effectively
The result helps you evaluate operating improvements and options for flue gas heat recovery.
A high flue gas loss does not necessarily mean that the boiler must be replaced. Depending on fuel, temperature level, operating mode and available heat demand, different measures may be appropriate.
We advise on energy-efficiency measures, flue gas heat recovery, and suitable modernisation and electrification concepts.
After the click you can look directly into our calendar and choose a suitable appointment with one of our employees.