Calculator of thermomodernization of the building
![](domek.jpg)
Step I
Check the approximate age of the building or the period in which the last deep modernization took place:
Heated area of the house (including the area of the attic if it is heated)
Is the attic heated? If "yes", please check the box
Number of people using the building:
Daily consumption of hot water per person:
Type of heating system in the house:
Type of installation of heating system in the house:
Is there a heat accumulation tank in the building? If "yes", please check the box
ŹSource of hot water preparation in building:
Type of ventilation system:
Step II
Specify what kind of building works will be carried out as part of the modernization of the building:
Automatic selection:
User selection of components:
Unit cost of fuel for home heating before modernization (prices 2021)
Coal K zł/per tonUnit fuel cost for hot water preparation in house before modernization
Unit cost of fuel for home heating after modernization
Unit fuel cost for hot water preparation in house after modernization
Computational results
Reducing the demand of final energy for heating and hot water preparation
GJ per year
Estimated demand of final energy after modernization
kWh/m2 per year
Estimated demand of final energy before modernization
kWh/m2 per year
Decreasing yearly average costs of heating and hot water preparation
zł annually
Estimated costs of heating and hot water preparation after modernization
zł annually
Estimated costs of heating and hot water preparation before modernization
zł annually
Estimated total cost of modernization (prices 2021)
sum in zł
Estimated simple rate of return SPBT
years
Yearly average reduction CO2 emission into the atmosphere:
ton per year