Heat Pump vs Gas Heating Calculator

This calculator helps you compare the costs of a heat pump vs. a gas heating system.
Initial situation for this calculator to be useful: There is an existing house with a gas heating system. You are considering replacing it with a heat pump.
Enter your values to calculate the annual costs and payback time for a heat pump investment.

Heat Pump Investment

Heat pump investment [€]:

Subsidy / Grant [€]:

Gas Heating System

Gas heating investment [€]:

Gas heating efficiency [%]:

Annual gas consumption [kWh]:

Gas price [€/kWh]:

Heat Pump Operating Costs

Electricity price [€/kWh]:

Heat pump COP (Jahresarbeitszahl JAZ):

Results

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Understanding the parameters

Gas efficiency (Heizwertnutzungsgrad): How efficiently your gas boiler converts gas to heat. Typically 80-95%.
Heat pump COP (Jahresarbeitszahl): Coefficient of Performance - how much heat the pump produces per unit of electricity. A COP of 3.5 means 3.5 kWh heat per 1 kWh electricity.
Gas consumption: Your annual gas consumption for heating (check your gas bill).

Support this project

This website is a private, non-commercial project.
If the calculations have helped you or you want to support the development,
I would be happy about a small donation via PayPal!