Do the radiators then get a separate circuit? Otherwise, the flow temperature for the underfloor heating would be too high. Alternatively, electric ones can also be used for additional heating.
That is correct. Since yesterday, new funding guidelines apply. New buildings are then subsidized up to 35% (also for heat pumps on the entire installation including underfloor heating)
Does that mean for heat pump + ground loop collector (for a brine-water heat pump) + necessary valves + complete underfloor heating? So everything that belongs to the heating system?
How is it actually if you do the ground loop collector as own work? Can the costs also be taken into account there?
Does that mean for heat pump + ring trench collector (for a brine-water heat pump) + necessary valves + complete underfloor heating? So everything that belongs to the heating system?
According to statements from BAFA (source: pink forum), there is the full 35% subsidy on what you mentioned for existing houses as well as new buildings. Even necessary wall penetrations, the concrete foundation for the heat pump, and other installation services are included. That quickly adds up to around 10,000 euros.
How is it actually, if you do the ring trench collector yourself? Can the costs be counted there as well?
I am currently trying to find out as well. However, my inquiry to BAFA has not yet been answered. I can gladly post when I have a response.
Called BAFA, that is correct. Everything related to the heating including labor costs and including underfloor heating. The requirement for new buildings is an annual performance factor > 4.5
Now the only question is how it is with personal contribution...
So, if you rent an excavator for 3 days and bury a self-purchased pipe.
Oh yes, and what would of course (for me) still be interesting. How long is the subsidy valid and from when is basically the "deadline".
Because in 2020 I won't get to execution anymore, if things go well still to commissioning.