Heating replacement in old buildings - gas or air heat pump

Thank you very much for the numerous responses. In the next few days, we will speak again with our heating engineer about the possibility of also combining the BWT with the underfloor heating. In any case, we have already decided on the underfloor heating. It saves us a lot of space if we forego the radiators, as we have overall small rooms. We were just not sure which option pays off more in the long run. Taking into account the BAFA funding, which - as we were told - also includes floor coverings, both methods are equally advantageous for us.

Then design the underfloor heating as if for a heat pump with a low flow temperature. I hope the heating engineer knows what he's doing.

Including the Bafa subsidy, which - as we were told - also includes flooring,

You probably mean KFW.

No, Bafa is correct for heat pumps in old buildings

No, Bafa is correct for heat pumps in old buildings

Well then. I am having it subsidized by the KfW. For me, there is a higher grant including the new parquet. That's why I didn't look into Bafa any further.

I believe they can be combined