Suitability check: Does a heat pump suit my house?
It is not the year of construction that decides, but the flow temperature your house needs on the coldest day. Three details are enough for a first, honest assessment.
Everything at once? The heat pump calculator shows suitability, size, heating costs and federal state public subsidy in three steps.
Very suitable
- Flow temperature on the coldest day
- 45 °C
- Expected seasonal performance factor
- 3,5
In your favour
What you should look out for
Estimate based on typical values. The actual flow temperature is determined by the installer via an on-site heating load calculation.
Why the flow temperature decides everything: The hotter the heating water has to be, the more work the heat pump has to do and the worse its seasonal performance factor becomes. As a rule of thumb, every extra degree of flow temperature costs around 2,5 % efficiency. That is why it is often more effective to install larger radiators in two or three rooms than to insulate the whole house.