Heating Cost Calculator by Rechnerzentrale

Energy source

Annual consumption

kWh

Single-family home: approx. 15,000–25,000 kWh/year

Price per kWh

€/kWh

Energy rate from your last bill (without standing charge)

What would a heat pump cost?Heat pump comparison: enter an electricity price

Efficiency of your heating

Share of energy that arrives as heat – assumption, e.g. 0.9 for a gas condensing boiler; for a heat pump its seasonal performance factor

Seasonal performance factor of the heat pump

Heat per kWh of electricity – from the manufacturer/planner or your assumption

Your price for heat pump electricity

€/kWh

Energy rate from the quote or tariff

Heating cost per year

€0.00

Enter your energy rate from your bill – we do not quote market prices.

How this was calculated

Cost = 15,000 kWh × 0 €/kWh = €0.00

Month = €0.00 ÷ 12 = €0.00

The calculation is based on the entered annual consumption. Base fees, maintenance or the CO₂ levy are not included.

What would a heat pump cost?

For the comparison we need your heating price and a price for heat pump electricity.

Heat your home needsFinal energy × efficiency; heating oil 10 kWh/l, pellets 4.6 kWh/kg (minimum calorific value DIN EN ISO 17225-2): 13,500 kWh
Electricity for the heat pump (SPF 3): 4,500 kWh
Of which CO₂ price in your price3,015 kg CO₂ × €55/t (minimum price 2026, Section 10 BEHG; emission factor Federal Environment Agency) – already included in the energy rate: €165.83