Construction costs are currently skyrocketing

The only remaining question is how to operate all those heat pumps in winter when the sun only shines for 8 hours with low intensity.
Store energy in hydrogen during summer and convert it back to electricity in winter? What's the point of that effort, you might as well just burn the hydrogen...

PS:
If your heat pump loses 1 kWh/day purely due to a few centimeters of uninsulated copper pipes, then you could open a sauna in your HAR. That is a completely exaggerated estimate.

I should have said uninsulated copper pipes in combination with continuous circulation.
Yes, we're talking about approximately 50-60 W/h, which has now been reduced to an estimated 10 W/h.
(approx. 2x1m of 40mm copper pipe running from the compressor past the control unit up to the 3-way valve)
According to your logic, every kitchen with a fridge-freezer combo (1.5 kWh/day in summer with stove, coffee machine, etc.) should reach volcano-like temperatures.
A non-shaded double casement window facing south would probably exceed 5 kWh in midsummer. Mind you, just one.

The only remaining question is how to operate all the heat pumps in winter, when the sun only shines for 8 hours with low intensity.
Store energy in hydrogen during summer and convert it back to electricity in winter? What's the point of the effort, you might as well just burn the hydrogen...

You can already feed hydrogen into the regular gas grid in certain quantities today and use it there. Where is the problem?

Memes with fake posters don't exactly bring seriousness to the discussion.

Fun fact of the day, or rather the last 100 pages:
"I’m not a Green/Green voter though" is the new "I’m not a Nazi/racist though"

Sad fact:
Those who will suffer the least from the wet this winter complain the loudest and show the least solidarity (Why should they, it’s the Greens’ fault anyway, Germany wanted it that way)
Has already thrown out his tenants and put off his cleaning lady?

Only quickly found. No, the AfD is of course not right-wing extremist. And now you come...

Regardless of how one may feel about this party: stirring up sentiment against it with fake posters is absolutely the lowest of the low!

And in the future I will refrain from energy efficiency topics again, I just have my own views on that :p

No, please, more of that! The days are over when you can say "Cold -> turn heating up to 5 and that's fine." As long as energy is an expensive and scarce resource, it needs to have a stronger presence in our consciousness. It starts with an efficient design and operation of the heating system. "flow30" is a keyword worth googling. I don't know if there has been a rethink since the war, but until a few months ago, in my impression, gas was still the standard for many heating contractors. It's just easy and... "we've always done it this way." Maybe there was a crash course on heat pumps and since then... whoever really wants one... :rolleyes: just gets one of those heat pump things. Oh, and there are things to consider like pipe spacing, pressure losses, volume flows... We just design everything as cheaply as possible (cheap for the heating guy) and give the builder a 1000L buffer tank for his 8m² utility room. Because the house obviously doesn't have enough heat(storage) capacity with 16 tons of screed yet. That one ton of water then of course makes all the difference! Then you don't have to keep the pipe spacing that tight; volume flows and hydraulic balancing also aren't such a big deal anymore... I am having exactly that installed in my house. I couldn't choose, because the general contractor commissioned the electrician and he... drumroll... has always done it that way. I tried to talk him out of the buffer tank, but no, no, no, that's how it has to be, there's no other way, it's this or nothing... Considering that I can't choose the electrician myself because of the general contractor and on top of that probably couldn't find another one in these times, especially not within a few weeks... I guess I'll have to swallow that bitter pill. It just annoys me, you could probably make the whole system about 20% more efficient and even leave out technology (buffer tanks and room thermostats). It would even be cost-neutral in terms of initial investment. The point is, it would be more work for the installer during installation. It's easier to just put a buffer tank in and be done with it. The customer pays the electricity bill anyway.

Only quickly found. No, the AfD is of course not right-wing radical. And now you come...

Oh dear, now you have unfortunately disqualified yourself and thereby confirm exactly having fallen for the propaganda that the loyal ZDF viewer accuses others of. What a pity.