Construction costs are currently skyrocketing

Comedy? 0.34 W/m²K and 12 kWh/m²/a do not match at all.

I don't know if you want to tell me that I am a liar or illiterate. But fortunately, I am not obliged to provide proof.

Oh look, the thread with the spam redirects was shamefully and secretly deleted even though the problem still persists. Great dear forum team.

The H'T merely represents the transmission heat loss of the envelope or conversely the quality (better said the poor quality) of the insulation. You can reduce the energy demands with included photovoltaics. So, with sufficiently large photovoltaics, you could have a primary energy demand of 0, even though your H'T is just good enough for the Energy Saving Ordinance (0.400). Final energy only goes up to the size of the electricity demand, but with a heat pump, you can cover everything with electricity... My values after calculation (H'T 0.344, PE 41.65, EE 23.14)

I would like to briefly describe the history regarding the shortage of skilled workers.

My wife is a tax clerk with Datev training.

In 2012, we moved from Nuremberg to Saxony-Anhalt into our house. Already after a few weeks, there was a job offer in a larger notary office about 25 km away from the new residence. Sounds great, right?

2 notaries and 10 employed women. Full-time from 8 am to 5 pm. However, the salary was very low at 7.60 euros gross back then. The work was very stressful and demanding. This lasted for 6 months, and after the probationary period, the employment contract was changed to part-time under massive pressure, with only 6 hours of work time but the same workload. By then, one was trained.

That was then the reason for a longer period of illness with the employer's desired termination.

There were then various applications to tax consultants with strange working hours and other stories. Salaries almost exclusively under 10 euros. There were tax consultants who rejected my wife and hired business administration graduates from the university for 1800 euros gross.
One Sunday evening, a tax consultant called our home, and my wife was supposed to start Monday morning at seven, after the application had arrived months earlier and nothing had been heard since.

Out of 20 applications, maybe 2 responses came. People were treated like dirt.

And today they wonder why they can’t find people. My sympathy is very limited.

The German education system has been run down. Nothing is coming after anymore. But as I had to hear today from the teachers' union, they want to ease the shortage of teachers by hiring foreign teachers. Exactly what we need.

After all, we have the best-paid teachers and the dumbest students.

the question is: in relation to what?

Kfw55 standard
Is it now achieved with this?

I am really thinking about it...
What life is like with an air-to-air heat pump.

But normally, one could retrofit a water-based ceiling heating, right?
Ceilings are 2.55m high.

One has to say it honestly. Every new building from the last 5 years is energetically top. Whether with gas heating or air-to-water heat pump, the additional costs are very manageable, and you spend significantly less than with houses from past decades. Whether 12 cents for gas or 40 cents for electricity, both are very good in terms of price for new buildings. You can't go wrong with that. Of course, now you have to combine air-to-water heat pump and solar. The latter will soon be mandatory anyway.