Which heating method would you choose and why?

...Currently also planning: air heat pump in combination with a room ventilation system. Later on photovoltaics.

If all framework parameters are suitable for this, it could definitely make sense. If not, a money pit may be programmed in some cases. There are plenty of examples for this ;) best regards

If all the framework parameters are suitable for this, it could definitely make sense. If not, a money pit may be pre-programmed. There are plenty of examples for this ;)

v.g.

Hi, Can you explain this to me in detail? Which framework parameters would these be, and where would the money pit be?

Hello,

...Can YOU explain that to me in detail. What framework parameters would these be, where would the money pit be?

A money pit would be a realized annual performance factor < 3. Quite a few builders unfortunately have to live with this despite high investments (2.3...2.7).

Here is an example: Annual demand 10,000 kWh thermal. With an annual performance factor of 2.3, this results in €696/year at €0.16/kWh. With an annual performance factor of 3.5, however, €457/year. Now extrapolate considering price increases (inflation) over 25 years.
A gas condensing boiler would generate consumption costs of about €824/year at €0.07/kWh, but would be significantly cheaper in terms of investment.
Any economic consideration requires a consumption forecast based on actual conditions. Energy Saving Ordinance/KfW proofs are generally not suitable for this and are not intended for it by the legislator.
The framework parameters are diverse and start with the climate location (heating load design temperature), the energetic building status (insulation values), and end with the dimensioning of the heating surfaces (hydraulics) as well as the heating performance and COP characteristic curves of the intended manufacturer/device. If everything fits together insufficiently (poor planning), a good annual performance factor is unlikely and the consumption costs will become unpleasantly high. Then even the "nicely calculated" Energy Saving Ordinance/KfW proof won't help.

sincerely

hi,

I am currently planning a new house. At the moment, we have a liquefied gas tank and pipes on the property. Therefore, I thought about using this again/further. Besides that, I wanted to use solar and a water-bearing fireplace. Unfortunately, I have no idea if that makes sense. Oh, and I also wanted underfloor heating everywhere – does that make sense?

Are there water-bearing fireplaces that could also be heated with coal if necessary? Costs for heating, buffer, solar should be around 10k for a 130 sqm house. I have seen fireplaces starting at 1200 euros (10Kw). I don’t want to ask companies yet. They install everything the customer wants. Can someone please help?

Regards Bromi

Hello,

.. Therefore I thought to use this again/ further.

There probably won't be any natural gas available for that.

.. Besides that, I wanted to use solar and a water-bearing fireplace. Unfortunately, I have no clue if that makes sense.

That always depends on the boundary conditions. In most cases, solar thermal systems (basic standard system) do not pay off in a single-family house.
The more heat generators are combined, the lower the overall efficiency and thus the economic viability, because each system has individual requirements to achieve the highest efficiency. These rarely fit well together. It is better to focus on one solution and make it as efficient as possible (planning). However, “mixing together” what produces heat is technically no problem.

.. Oh, I also wanted underfloor heating everywhere – does that make sense?

Sometimes yes, sometimes no. That also depends on the boundary conditions.

.. Costs for heating, buffer, solar should be about 10k for a 130 sqm house.

That will probably not be enough, unless it's shoddy work and relatively high consumption costs later.

Best regards

Hello

So we moved into our new house in January (130 sqm) with underfloor heating

We thought for a long time about what to choose

Oil heating: You can buy oil in stock when (it is cheap), but you need an extra storage room, so a whole room is missing.

Gas heating: You have to take natural gas at any price (e.g. today 1€ per m3, tomorrow 2€ per m3)
You also need space to store liquid gas.

Finally, we chose an air-to-air heat pump. There are special electricity tariffs (at least with our regional supplier). We received our first electricity bill in October, and we even get money back.
Also, I don’t need to put collectors on the roof because with the heat pump we fulfill the 20% renewable energy requirement.

Additionally, we have a 7 KW wood stove in the living-dining area, which is enough to heat the ground floor and part of the upper floor.

Sure, I could still put additional collectors for water and heating on the roof, but that only pays off after years, if at all (higher acquisition costs, maintenance, and repairs) according to my heating engineer. He would have installed everything we wanted, so he would have earned more. But he calculated everything against it and advised us not to do it.

The same applies to water-circulated wood stoves, which are a great thing. But you also have to buy the wood.

But everyone has to decide that for themselves.

Best regards Shorty