Which heat pump is most suitable for our new building?

..How do I carry out a basic assessment or what details does it contain? Or is this done by an energy consultant?

This is done by an MEP planner. This includes the calculation of the actual demand (power, energy) for heating, hot water, and possibly ventilation. Heating load included. The expected consumption is also determined with this. Not a few prospective builders are of the opinion that the final energy indicated in the Energy Saving Ordinance/KfW certificate is the actual consumption. This is not the case!

...Unfortunately I do not have that. Who can create this for me and what does it cost?

If needed, gladly a private message or direct e-mail to me.

..., or who can best advise us. Is there a recommendation here?

See above. At least it should be someone with the appropriate professional training who also has nothing to do with sales or installation. Simply to avoid conflicts of interest.

...I have read that consumer advice centers also offer an energy consultation for 5 euros – is that any good, or does it help us in making a decision?

For a rough general overview, that may perhaps be useful. However, this stage has already been surpassed here, as concrete parameters for the specific building project have to be determined. v.g.

Hello,

In general, the question seems to be how we best approach the matter, or who can advise us best. Is there a recommendation here? I have read that the consumer advice centers also offer an energy consultation for 5 euros - is that any good, or does it help us move forward in our decision?

In my experience, you can save yourself the latter - and as €uro rightly pointed out, you are already too far along for that.

Go to the energy agency; Aunt Google will show you the way. I have had the best experiences with them; they provide neutral information.

Rhenish greetings

Hello everyone,

after having to focus more on other topics in recent weeks, I recently commissioned a heating load calculation from an independent MEP planner according to DIN 12831. However, I have changed my mind about one thing. Basement 1 + 2 will not receive underfloor heating and will therefore not be heated...

To be honest, the heating load calculation does not really help me much at this point in deciding whether it is smartest to use an air heat pump, a ground source heat pump, or whatever else, so I also hope for more advice from you based on this.

How is it generally handled, is the capacity of the heating system exactly designed according to the determined building heating load, or is it recommended to include a buffer upwards? If yes, about how much?

Thank you in advance for your support!

Best regards
TripleB

Hello,

Hello everyone,
after having to focus more on other topics in recent weeks, I recently commissioned a heating load calculation from an independent MEP planner according to DIN 12831.

The creator should be independent, but whether an MEP planner? ;-) I know this type of printout quite well by now ;-)
The HLB is formally incorrect!!! Accordingly, everything that follows from it! Whether there might still be "skeletons" in the closet regarding the component geometry cannot be assessed like this. Who created the air volume schedule according to DIN 1946-6 for this?

....Since the heating load calculation honestly does not really help me at the moment to decide whether to use an air heat pump, ground source heat pump, or whatever is smartest, I now hope for more advice from you on this basis :)

Nobody can reliably answer this with certainty, since, for example, the actual energy demand for heating and hot water is unknown. With high demand, a ground source heat pump would probably be interesting; with low demand, an air heat pump. For ground source heat pumps, the source design plays a decisive role, and for air heat pumps, the performance curve evaluation, each in relation to the regional climate parameters, if one is interested in an economical solution.
The tendency is as follows:
With low to moderate insulation standard of the building and cool to moderate external temperature patterns, rather a ground source heat pump.
With moderate to very good insulation standard of the building and moderate to mild external temperature patterns, rather an air heat pump.
The boundaries are fluid.

...How is it generally, is the heating output exactly sized according to the determined building heating load, or is it advisable to calculate in a buffer upwards? If yes, how high approximately?

Provided the HLB is correct, the heat generator is sized accordingly, because this is what it is intended for! :) Buffers (performance surcharges) upwards do more harm than actual good.
You can see here that comprehensive planning/dimensioning is worthwhile:

However, you don’t get that at a bargain price.

Best regards

The HLB is formally incorrect!!! Accordingly, everything that follows from it!

Why is the HLB formally incorrect? It would be good to also receive explanations or further information on this. What about the design of the underfloor heating, is that also incorrect?

Whether there might still be "skeletons" regarding the component geometry "lying in the basement" cannot be assessed like this.

What exactly is meant by that? I don’t understand...

What should I do now with this matter – throw it away, demand a refund/write it off? Is the part completely unusable? A heating engineer came up with similar, slightly higher values regarding the HLB...

Kind regards
TripleB

Why is the HLB formally incorrect? It would be good to receive reasons or more detailed information on this.

Why do I have to provide a reason for this? Where is the air volume plan according to 1946-6? Contact the creator of this poor performance, who has been compensated for it.

...What about the design of the underfloor heating, is that also wrong?..

That should be obvious, because if the room heat loads are wrong, the underfloor heating design based on them is also wrong.
Likewise, the subsequent hydraulics based on it (pipe network calculation)!

...What should I do with this matter now – throw it in the trash, demand a refund/write it off? Is the part entirely useless? A heating engineer came up with similar, slightly higher values regarding the HLB...

Guesswork!