Installation of a gas heating system in new construction 2023/2024

Even if it will be a gas heating system, have the underfloor heating designed as if for a heat pump with a low supply temperature.

I don't really see a problem there, you have an approved building permit in which the fossil generator is named and approved... As long as the application is valid, I would say, according to my understanding of the law, you can also install a gas heating system

And as always. Only hollow slogans like "Vive le progrès!" and "Heat pumps are the future!". Yes, they are, just like the electric car.

But there is a reason why the combustion engine phase-out is set for 2035 and not 2024. Because the infrastructure and green electricity supply are not yet available in sufficient quantities.

And unfortunately, this also applies to heat pumps. A single heat pump increases the consumption of an average household from 2,500 kWh (I assume a frugal 4-person household) to over 5,500 kWh.
Annual performance factor 3, 9,000 kWh heat demand assumed.

Where is this electricity supposed to come from? We are already buying coal power today because we cannot store anything.

Please, some explanation and no more slogans.

And please not that photovoltaics nonsense, where you install 25 kWp on the roof only to be able to use 2-3 kWp in winter.

Do I understand your argument correctly that nowadays it is better to have a gas heating system installed rather than a heat pump in order to reduce CO2 emissions?

Annual performance factor 3

Fake news. Most systems perform significantly better in new buildings.

9,000 kWh heat demand assumed.

Then it must be a spacious villa. It is a new building! Let’s calculate with 6,000 kWh heat demand and an annual performance factor of 4. Then you halve your electricity demand. And 125 kWh more per month = 50€ electricity costs. With photovoltaics – no matter how big – you significantly reduce the purchased electricity. A 10 kW system gets you through the day continuously from mid-March to October (including hot water). Even today, in pouring rain, 2 kW come from the roof.

Where is this electricity supposed to come from? We already buy coal power today because we can’t store anything.

That is probably true and I find the shutdown of our nuclear power plants a disaster. But each year far fewer heat pumps come online than actually planned – see delivery times of our established providers. At the same time, renewables are being expanded – also much slower than planned. Both are proceeding calmly in sync. I do not see a power shortage. Only the CO2 problem. But I prefer to make a multiple of heating energy out of (purchased and self-produced) electricity rather than convert gas 1:1 into heating energy.

Fake news. Most systems run significantly better in new buildings.

You have to make up your mind,
either fake news and all systems run better than an annual performance factor of 3 in new buildings
or no fake news because only most run better than an annual performance factor of 3

Rest same ;)