BAFA funding tips

But isn't this calculation dependent on many object-related factors that do not appear in any list?! Supply and return temperature, heating water vs. domestic hot water, place of residence, insulation values...

So with an annual performance factor calculator, I also only get an annual performance factor of just over 4.0 for this heat pump.

With us, it is about the Wolf BWL1a. It is also on the list. I assume that it will then also be supported.

I wrote an email to BAFA regarding the list of heat pumps and which ones are eligible for funding. From this, as I have suspected so far, it follows for me that this list only includes devices that are eligible for funding at all. But the actual funding depends on the calculated annual performance factor, which must be greater than 4.5. Attached is the message from BAFA:
______________________________________
Dear Mr. ...,

all heat pumps listed with test certification in the list of heat pumps are those that are eligible for funding at all. Air-water heat pumps are predominantly eligible for funding in existing buildings, as they only require an annual performance factor of 3.5 there.
______________________________________

okay and how is the annual performance factor calculated that you will then refer to? The Wolf, for example, is sometimes specified with 4.8 - depending on the outside temperature.

Just google "Jahresarbeitszahl Rechner" once. But the complete calculation must definitely come from the heating installer.