I always wanted to show the collectors again (see attachment), at the time of installation it was 48 sqm collector area on a 13-meter pit width
And NO, the heat for hot water (shower and etc.) runs through the air heat pump...
The geothermal heat pump also runs without electrical auxiliary heating at high sub-zero temperatures (it is turned off), the inlet source temperature is currently 8 degrees (-2 degrees outside temperature) when it gets really cold it goes down to 3 degrees, but as said, it has to be minus 10 degrees, which happens rather rarely
I have to chime in here. I don’t quite understand why you can massively reduce the collector area like that unless you use more energy in the form of electricity or other energy sources (e.g. fireplace). For 125 sqm living space we have an estimated ratio of collector area to living space of 1:1. You want to get energy for about 160 sqm living space from 48 sqm or 78 sqm.
The heat for water and heating is primarily generated by geothermal energy both in your case and ours. In addition, the heat energy loss from the condensation dryer adds up for both you and us. The only advantage for you is that you use the ineffective heat from the utility room and the geothermal heat pump maybe works in somewhat more effective areas. But that does not explain the huge difference in the ratio of the collector area.
