The monthly costs for using a heat pump depend on various factors, including the type of heat pump, its capacity, energy efficiency, house insulation, outdoor temperature, and energy prices. Here are some steps to make an estimate:

1. Determine the capacity of the heat pump:

   • The capacity of the heat pump is measured in kilowatts (kW). This indicates how much energy the heat pump can provide to heat the house.

2. Check the energy label of the heat pump:

   • Heat pumps have an energy label that indicates energy efficiency. The higher the energy class, the more efficient the heat pump operates.

3. Calculate the energy consumption of the heat pump:

   • The energy consumption is expressed in kilowatt-hours (kWh) and can be found in the technical specifications of the heat pump. This shows how much electricity the heat pump consumes per hour.

4. Determine the number of operating hours of the heat pump per month:

   • This can vary depending on the outdoor temperature and the heating demand of the house.

5. Calculate the monthly costs:

   • The formula is then: Monthly costs = (Heat pump capacity in kW) x (Hourly consumption in kWh) x (Number of operating hours per month) x (Price per kWh electricity).