Heating cost calculator for a 100 m² house
The calculator already has a 100 m² house set up. Pick the insulation standard, check the prices and see the yearly cost of heating with each of five heat sources.
Example: 100 m² house, insulated
Cheapest: eco-pea coal, about 3,627 PLN a year
- Heat demand
- 13,600 kWh/yr
- of which hot water
- 3,600 kWh
- Spread
- 10,517 PLN
- Eco-pea coalsolid fuel: about 3,627 PLN a yearapprox. 2.3 t a year
- Heat pumpelectricity: about 4,041 PLN a yearapprox. 3,886 kWh of electricity a year
- Natural gasgas: about 4,438 PLN a yearapprox. 14,316 kWh of gas a year
- Pelletssolid fuel: about 7,608 PLN a yearapprox. 3.3 t a year
- Direct electricelectricity: about 14,144 PLN a yearapprox. 13,600 kWh of electricity a year
Assumptions and formula
| Heating | Calorific value | Efficiency | Energy price |
|---|---|---|---|
| Eco-pea coal | 7.5 kWh/kg | 0.80 | 1,600 PLN/t |
| Heat pump | counted in kWh | SCOP 3.5 | 1.04 PLN/kWh |
| Natural gas | counted in kWh | 0.95 | 0.31 PLN/kWh |
| Pellets | 4.9 kWh/kg | 0.85 | 2,330 PLN/t |
| Direct electric | counted in kWh | 1.00 | 1.04 PLN/kWh |
An estimate for a typical heating season. Fixed charges and the device itself are not included. Full methodology
How electricity, gas, pellet and coal prices have changed, month by month. Price history
Ready-made calculations
What drives the cost in a 100 m² house
At the start the calculator assumes a house insulated after 2000 with hot water for four people: about 13,600 kWh of heat a year. A heat pump then costs about 4,041 PLN a year.
The insulation standard moves the result a lot. For space heating alone the same floor area needs about 6,000 kWh in a new house built to WT 2021 and about 20,000 kWh without insulation. Pick your standard on the scale and enter the prices from your bill.