Prefab house made of Neopor - experiences?

[*]Plus-energy house thanks to insulation values and photovoltaics
[*]Excess current is fed into the grid (electricity cloud contracts with energy supplier) so that you can get through the winter
[*]Air-to-air heat pump outside with corresponding counterpart inside the house
[*]Hot water through instantaneous water heater
[*]Underfloor heating (only in the bathroom) through electric heating mats (because conventional underfloor heating with water loops is too slow to have any effect in such a house)
[*]For spontaneous warming of a room, if ever desired, would use electric heaters (infrared)
[*]Ventilation system is a given
[*]That means everything is powered by electricity. No ground-source heat pump or similar. No hot water storage tank, …

Morning. I’ve only been reading along until now, but now that I’m reading the concept, I have to sign up and add my two cents.

I think the concept is great!

I also want to build according to a similar concept. With shuttering blocks. A city villa is to be built.

My concept would differ in the following way:

Paradigma CPC collectors 4 pcs. With 1000l buffer. For hot water s/w plus pool heating in summer. And heating support in winter.
Water-based underfloor heating in the bathrooms and my wife’s office.
Water-based fireplace in the living room
Single split inverter units (3) with A+++ and heating down to minus 25 degrees in the bedroom, living area downstairs, and office. You can add heat as needed in winter and cool in summer.
Otherwise similar to yours. I would have to read into the cloud contracts. Because I actually wanted to set up a wind turbine + solar on the roof and also use a power storage unit.
I also install instantaneous water heaters in case the sun doesn’t shine for weeks in winter and there’s no wind.
And the controlled residential ventilation also gets a brine preheating or cooling.

And I also have to say. I think the system is top. I see no disadvantages. Everyone who doesn’t know it wants to push me the tried and true. Three, four, five meter walls are concreted in one go — there are no gravel nests and even if you have 3 to 4 gravel nests on 48m of exterior wall — what’s the problem? There is special concrete for that which is supposed to prevent that; it is finer and self-compacting. My brother-in-law has a construction company and is a concrete worker. We’ll manage that. He poured 8m walls in one go at the University of Kassel (exposed concrete) without a single gravel nest...

Have you heard anything about concreting walls and the ceiling in one go? Like at Styro Stone in Shanghai, I believe? I found that very interesting.

And one more thing I noticed. Heating engineers or manufacturers always want to sell you the most expensive thing. How is a hydrogen heating system ever supposed to pay off? That will never happen...

That sounds even worse...

That sounds even worse...

Why don't you describe why?!

Other PHs manage with a 1500 watt heating element...

@Beno with e.g. Euromac2 you can concrete walls and ceilings simultaneously. Maximum concreting height according to manufacturer specifications is 3m. Of course, a little more is possible with careful safety precautions. For the house concept, I rely entirely on electricity (instantaneous water heater, infrared heating). Best regards from de Palz

Ok that doesn't sound bad, I would have to read up on Euromac2.

If you can generate the electricity yourself, that's a great concept. And if the continuous flow heater breaks down after 15 years, you buy a new one for 300 euros...

Hi Almost 10kwp are already installed and almost 10 more will be added. Paired with a 13kwh storage, I hope to have to draw very little electricity from the grid.