Consumption values, efficiencies, solar fractions, and other parameters can be calculated from the temperatures and the energy flows of the system.

The use of fuels by energy type (natural gas, oil, wood pellets, district heating) is calculated from the energy transferred to the auxiliary heating at the heat exchanger via the heat equivalent and the efficiency of the auxiliary heating. The efficiency of the auxiliary heating is determined depending on the return flow temperature, enabling simulation of the various efficiency levels at different capacity utilization of the heating system.