Online calculator
Heat Pump Calculator
Calculate electricity consumption, annual heating cost, monthly cost and effective heat cost of your heat pump.
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What does this calculator do?
Use this heat pump calculator to 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.
Formula
Heat pump electricity consumption = annual heat demand ÷ seasonal performance factor Variable electricity cost = electricity consumption × electricity price Total annual heating cost = variable electricity cost + fixed fee + maintenance cost Monthly cost = total annual heating cost ÷ 12 Heat cost per kWh = total annual heating cost ÷ annual heat demand
Example
Example: With an annual heat demand of 15,000 kWh, a seasonal performance factor of 3.5 and an electricity price of €0.30 per kWh, electricity consumption is about 4,286 kWh. Variable electricity cost is about €1,286. Adding a fixed annual fee of €120 and maintenance cost of €150 results in total annual heating cost of about €1,556, or roughly €130 per month.
What does this heat pump calculator calculate?
The calculator estimates yearly electricity use, variable electricity cost, total annual heating cost, monthly cost and effective heat cost per kWh. This helps you assess how economically a heat pump may operate under your assumptions.
Who is this calculator for?
It is useful for homeowners, builders, renovators and anyone comparing heat pumps with gas heating or other systems. It is especially helpful when you want to test different electricity prices, efficiency levels or building heat demands.
What does the seasonal performance factor mean?
The seasonal performance factor is a simplified measure of heat pump efficiency over a full year. For example, a value of 3.5 means that 1 kWh of electricity produces around 3.5 kWh of heat on average over the year. Higher values are usually better economically.
Which factors influence the cost most?
The key factors are building heat demand, heat pump efficiency, electricity price, system temperatures, planning quality, insulation level and user behavior. Domestic hot water, blocking times, storage tanks and hydraulic balancing can also matter.
How realistic are the results?
The figures are only intended as an initial estimate. Real consumption and cost depend on many additional variables such as climate, actual building standard, operating pattern, load profile and the quality of the installed system.
Why is heat pump content strong for SEO?
Heat pump topics combine high information intent with strong purchase and renovation intent. Users search for electricity use, cost, efficiency, economics, comparisons with gas and subsidy-related questions. That makes a high-quality calculator page especially valuable.
Frequently asked questions
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 estimates heat pump cost. For a fair comparison, you should also use a gas consumption or heating cost calculator.