Heat pump / final energy demand / annual performance factor

Yes, some want to save themselves the heating load calculation with it - but otherwise the consensus is that the numbers say nothing about the actual consumption. Of course, you have a point of comparison, but that doesn't help with the question at hand. And here, an attempt was made to estimate electricity consumption using the parameters - right?

Yes, some want to save the heating load calculation with it – but otherwise the consensus is that the numbers say nothing about the real consumption.

Sure, you have a reference value, but that doesn’t help with the question at hand. And here an attempt was made to estimate electricity consumption using the parameters – right?

Ok, so I will clarify the reference to the question again, I answered exactly one part of the question (so no one has to scroll

1.) Has anyone already had experience with similar figures and can confirm the calculated values in reality?
2.) Can these figures even be plausible, that only 2550 kWh/a are needed? That would be only 560€ at electricity costs of €0.22, and a heat pump produces more kW heat from one kW electricity.
3.) How exactly are the annual performance factors calculated based on this final energy demand?

1. Reality looks different every year: weather, consumer behavior, actual heating device, how well the heating is adjusted, etc. pp.: the values can only be very rough guidelines
2. See my previous post: the figures can be consistent purely regarding the quantities.
3. In principle, you calculate energy consumption/annual performance factor to get the costs.

In the Energy Saving Ordinance, the final energy is the electricity consumed by the heat pump, right? And inside it, the annual performance factor is given in the form of the system performance factor. How can I then calculate what a better annual performance factor results in or how much less electricity the heat pump consumes?

Summarized again:

I have an energy saving certificate with a heat pump, for which the following values have been calculated at KfW55. The insulation, size, etc., also correspond to my previously considered new building in timber frame construction.

Usable area: 154.4m²
Heating energy demand 45 kWh/m²a
Primary energy demand 37.2 kWh/m²a
Final energy demand 14.3 kWh/m²a
System performance factor eP: 0.766
Annual renewable electricity production / photovoltaic system: 3000 kWh/a
Coverage ratio of the photovoltaic system: 38.3%

And from a heating engineer, I have various heat pumps and their annual performance factors:
Split heat pump: 3.34
Monobloc heat pump: 3.67
Ground source heat pump with horizontal collector: 4.67

Now to my concern:
1.) At an electricity price of €0.22, the annual costs would be 14.3 kWh/m²a * 154.4 m² * €0.22 = €485. Am I seeing this correctly?
2.) How can I use the existing values to calculate a comparison of the types of heat pumps? Because the different types vary in price and annual performance factor and I would like to know from which point the more expensive variants pay off. It would be great if someone could explain this to me or provide an example calculation.

Many thanks in advance

Asked the other way around. What additional costs do you have for the individual heat pumps?

Then you can already start to make some considerations yourself, because the difference in the annual consumption will - based on a gut feeling - be between 50-100€, of course depending on the winter, your heating habits, hot water consumption, etc. If you start calculating, please also take into account that a coverage rate of 38.3% from the photovoltaic system for heating is more than unrealistic, unless you have a storage system. If you, as an entrepreneur, are using the photovoltaic system, you MUST also consider the self-consumption with VAT and include the self-consumption in your profit and loss statement (and then also declare it within your income tax return). So you don’t get the electricity for free...

So the additional cost between split and monoblock heat pump should be about €4000. But I don't have a concrete offer because my house planning is not that advanced yet. However, I just want to understand it beforehand. Between split and brine heat pump with surface collector, the additional cost in a current construction project is only €3000, but in this case the client does a lot of the work for the surface collector themselves.