But no heat pump in a single-family house?

Hello,

so, no one will deny that the system described by your architect works. However, it always comes down to economic efficiency, so that you are not only satisfied with the heat output (which you can achieve with almost any system) but also with your budget. Unfortunately, assessments from others rarely help in this regard, even though they are often useful for initial sorting. Therefore, I would recommend that you definitely have a calculation comparing the systems presented to you before making further decisions, as it then concerns your specific situation and not “comparable” reference projects.

Best regards,
Erik

Hello Jürgen,

€uro, you are quite something! What you are saying is off-topic, but whatever, I am angry and stupid and you are the hero.
A factual discussion with you seems pointless to me.
I will no longer participate in the discussion because I have more important things to do.
Have fun, Mr. Expert €uro.

It is not very productive to fall into sarcasm; this does not help the users reading along here at all ... maybe at a momentary glimpse your gut feeling, which can sometimes be helpful ;)

I am also puzzled that you, as a building expert and a carpenter by profession, "also" provide energy consulting. I am not a fan of jack-of-all-trades, as each profession on its own already requires enormous effort if one wants to stay up-to-date and thus serious.

€uro is - verifiable - on a confrontational course with most of the energy consultants posting here (quite a few are part-time energy consultants); he will have paid his tuition in this regard ... as have I, by the way, and probably all good service providers. We two have also often been of different opinions. But one thing I cannot accuse him of is not arguing with due measure and expertise.

So don’t withdraw sulkily into your shell, but show your true colors and stay engaged for the users here. THAT is after all the purpose of this forum!

Rhenish greetings

The problem here is much more that with €uro the impression arises that he primarily wants to sell his own service, which is basically okay, but almost every topic in this area is used to start a fundamental discussion. The information the questioner receives is thus almost zero.

I still believe that a skilled energy consultant with appropriate experience is very well capable of making a reliable statement, even if not down to the last detail, whether a system in the described scope is suitable for a single-family house or not. For example, in another thread I learned very instructively from €uro, based on two cases, that a solar system often doesn't even remotely achieve the promised performance. This has reinforced my previous attitude towards these things.

Meanwhile, I tend to favor a ground-source heat pump which, although more expensive to purchase, I expect to offer the greatest long-term planning security in terms of consumption.

...., but almost every topic in this area is used to start a fundamental discussion. The information the questioner receives is therefore practically zero.

This is usually due to insufficient or unclear data. The expectation of some that an exhaustive or reliable answer will follow the question can generally not be fulfilled. Forums cannot replace professional advice or planning/dimensioning. At best, they can provide suggestions/hints.

....I still believe that an experienced energy consultant with appropriate expertise is indeed able to make a statement, even if not reliable down to the last detail, about whether a system is suitable for a single-family house as described or not.

Laypersons can comment/answer almost anything; however, when you deal with these matters professionally, it becomes critical, as specific follow-up questions arise. Nothing is more uncomfortable than having to correct a premature statement afterward. Anyone with some insight into the overall context knows about the interaction of details with each other (building, climate location, system technology, user behavior...) as well as the initially unknown influence on a possible final result. Through my work as an expert, I know quite a few botched systems. Apart from exceptions, the problem is usually missing, insufficient, or incorrect planning. Various execution deficiencies usually add to that. The idea of subsequently making up for what was initially neglected by adjusting parameters, e.g., in the control system, is mostly mistaken. Fundamental deficiencies can generally no longer be corrected with reasonable effort!
Best regards.