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Heat Pump Calculator

Calculate electricity consumption, annual heating cost, monthly cost and the effective heat cost of your heat pump.

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Estimate how much electricity your heat pump may consume per year and what annual and monthly heating costs may result. It is designed as a practical first-step tool for homeowners, builders and renovators who want to compare scenarios quickly.

Display currencyChoose the currency symbol for entered amounts and results. No exchange-rate conversion is applied.
Heat demand is one of the main cost drivers. Even small changes can noticeably affect consumption and annual heating cost.
The higher the SPF, the less electricity the heat pump needs for the same heat output.
Optional allowance for backup heater, pumps, defrosting, hot-water or system losses. Use 0 if you want heat demand divided by SPF only.
Use your real tariff or compare different scenarios with different electricity prices.
Many tariffs include not only a unit price but also a fixed annual fee.
Maintenance cost should usually be included for a more realistic total cost estimate.
FAQ

FAQ about Heat Pump Calculator

How much electricity does a heat pump use per year?

That mainly depends on the building's heat demand and the seasonal performance factor. Lower heat demand and higher efficiency usually reduce electricity consumption.

What is a good seasonal performance factor?

Higher values are generally better. Realistic values depend on the building, heating system, flow temperatures, heat source and system design.

How much does heating with a heat pump cost?

Heating cost mainly depends on electricity use and the electricity tariff. Fixed annual fees and maintenance cost may also play a role.

Is special heat pump electricity always cheaper?

Not necessarily. Special tariffs may help, but the real economics depend on the actual price, fixed fee, blocking times and system efficiency.

Does this calculator replace professional energy advice?

No. It is only intended for general information and initial guidance. For a reliable real-world decision, professional planning and advice are recommended.

Can I directly compare gas and heat pumps with this calculator?

Only partially. This calculator gives an approximate view of heat pump cost. For a fair comparison, you should also use a gas consumption or heating cost calculator.

Why do fixed fees and maintenance matter?

Because they increase total cost even if electricity consumption looks efficient. Looking only at the electricity unit price often understates real annual heating cost.

What does heat cost per kWh tell me?

It shows the effective cost of one generated kilowatt-hour of heat under your assumptions. That makes it easier to compare different heat pump or heating scenarios.