ᐅ Installation of a Gas Heating System in New Construction 2023/2024

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

I don’t really see a problem since you have an approved building permit/planning permission that specifies and approves the fossil fuel system... As long as the permit is still valid, I would say, based on my understanding of the law, you can also install a gas heating system.

And as always, just empty slogans like "Vive le progrès!" and "The heat pump is the future!" Yes, it is, just like the electric car.

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

Unfortunately, the same applies to heat pumps. A single heat pump increases the consumption of an average household from 2,500 kWh (assuming a frugal 4-person household) to about 5,500 kWh. Annual performance factor 3, assuming 9,000 kWh heating demand.

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

Please provide explanations instead of slogans.

And please, none of that photovoltaic 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 install a gas heating system rather than a heat pump to reduce CO2 emissions?

xMisterDx schrieb:

Annual performance factor 3

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

xMisterDx schrieb:

9,000 kWh heating demand assumed.

That would be a quite large villa. This is a new build!

Let’s calculate with 6,000 kWh heating demand and an annual performance factor of 4. Then you halve your electricity consumption. And 125 kWh per month more equals about 50€ in electricity costs.
With photovoltaics – no matter how large – you substantially reduce the electricity you need to buy. A 10 kW system will cover your daytime needs continuously from mid-March through October (including hot water). Even today, in heavy rain, about 2 kW are coming from the roof.

xMisterDx schrieb:

Where should this electricity come from? We are already buying coal power today because we can’t store any.

That is true, and I consider the shutdown of our nuclear power plants a disaster. However, each year far fewer heat pumps come online than originally planned – just look at the delivery times from established suppliers. At the same time, renewables are being expanded – also much slower than planned. Both trends are progressing steadily in parallel. I don’t see a supply shortage, only the CO₂ problem.

I prefer to generate multiple times the amount of heating energy from (purchased and self-produced) electricity than to convert gas 1:1 into heating energy.

KarstenausNRW schrieb:

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

You have to make up your mind:
either fake news and all systems perform better than a seasonal performance factor of 3 in new builds,
or no fake news because only most of them perform better than a seasonal performance factor of 3.

The rest is the same 😉