Heating cost calculator for a 150 m² house
The calculator starts with a 150 m² house. Pick the insulation standard and see what you would pay for heating with each of five heat sources.
Example: 150 m² house, insulated
Cheapest: eco-pea coal, about 4,960 PLN a year
- Heat demand
- 18,600 kWh/yr
- of which hot water
- 3,600 kWh
- Spread
- 14,384 PLN
- Eco-pea coalsolid fuel: about 4,960 PLN a yearapprox. 3.1 t a year
- Heat pumpelectricity: about 5,527 PLN a yearapprox. 5,314 kWh of electricity a year
- Natural gasgas: about 6,069 PLN a yearapprox. 19,579 kWh of gas a year
- Pelletssolid fuel: about 10,405 PLN a yearapprox. 4.5 t a year
- Direct electricelectricity: about 19,344 PLN a yearapprox. 18,600 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
How much heat a 150 m² house needs
A 150 m² house insulated after 2000 needs about 15,000 kWh of heat a year for space heating, and about 18,600 kWh with hot water for four people. A new house built to the WT 2021 standard needs about 9,000 kWh for space heating.
At this floor area the gap between an uninsulated and a low-energy house is about 24,000 kWh a year, so insulation changes the cost more than the choice of heat source.
Frequently asked questions
How much does it cost to heat a 150 m² house with a heat pump?
For a 150 m² house insulated after 2000 with hot water for four people, at SCOP 3.5 and an electricity price of 1.04 PLN/kWh, it comes to about 5,527 PLN a year. Enter your own electricity price to see your result.