Air-water heat pump and water-driven pellet stove and photovoltaic system

So the BAFA funding was not a big problem for us, after a few months the money was in the account, you just have to follow the guidelines. If the heat pump does not meet the annual performance factor, it does not matter. Deviations between theory and practice do not lead to a repayment of the funding.

Unfortunately, I cannot see that in the file. However, I found that the annual performance factor is 3.3. The total consumption of the air-to-water heat pump is 4,300 kWh.

Then there is no BAFA subsidy, your heat pump might be on the BAFA list, but for the subsidy it must have an annual performance factor of over 4.5. I don’t find 3.3 particularly great, especially since that is even the higher theoretical value.

Then there is no BAFA subsidy, your heat pump may be on the BAFA list, but for the subsidy it must have an annual performance factor of over 4.5. I don't find 3.3 particularly great, especially since that is even the higher theoretical value.

So our pump is definitely listed on the list of subsidized pumps with an annual performance factor of 4.5

So our pump is definitely listed on the list of subsidized pumps with an annual performance factor of 4.5

Which pump is it?

By any chance a Thz or Lwz 504?

The 504, afaik, is not with an annual performance factor of 4.5 in the table, but with a COP of 4.95 for example. However, this number has nothing to do with the calculations for the BAFA, which was 4.7 for our 504. So it is important to have this checked beforehand, the table is not conclusive in this regard.

Which pump is it?

By any chance a Thz or Lwz 504?

The pump is an Arotherm vwl 85 from Vaillant.