Everything is gross.
"Installation of a subsidized air-to-water heat pump according to the aforementioned model" --> €9,200.00 "optional" instead of 20k "standard" pump.
As I said, I still have to talk to the builder in detail, but since this offer counts and also includes all costs, as I demanded, I assume with 90% certainty that NO additional costs will arise. In other words --> €30k total costs for the subsidized heat pump
Maybe I currently have a comprehension problem.
Does that mean pump plus underfloor heating or including?
That is definitely relevant. €30,000 including everything gross looks a bit different, for example.
In that case, however, not €30,000 would be eligible for subsidies. Everything after the pump is not eligible for subsidies. Thus, if the underfloor heating etc. is included in the price, only a part of the €30,000 would be subsidizable. At least in new construction.