Feedback on heat pump / offer requested!

Heat pump one size smaller Storage tank at normal level Fresh water station then unnecessary.

I will pass this on to my heating engineer and see what he says...

More important from my point of view would be to ensure that no buffer is installed in the heating circuit, that the underfloor heating is well planned, and that the heat pump is not oversized. If possible, circulation should also be avoided.

Thanks for the tip, I will pay attention to that.

Regarding the siphon principle: I don’t know if it is a common option among manufacturers or heating engineers or not, there are other forums that provide more expertise on this. In any case, it doesn’t seem to be planned.

Only infiltration is meant here, not the suction well. But it is true, very few offer the siphon principle.

What do you think about the annual costs compared to an air-to-water heat pump?

I mean, how does the better efficiency of the GWWP compared to an air-to-water heat pump affect consumption and euros?

Maybe 150-300€ difference per year, depending on the heat demand of the house and the location of the house. With poor planning, also 0 or less.

A well-planned air-to-water heat pump approaches a mediocre ground-source heat pump. Monitor planning. For ground-source, do not forget the BAFA subsidy.

The annual performance factor of an air-to-water heat pump may be around 4, that of the [WWWP] between 5.5-6. Ergo, about 40-50% lower consumption costs. And 12m of well at 250€ per meter is a bargain. The subsidy ([BAFA]) clearly exceeds the costs of developing the heat source.

And a 12m well at €250 per meter is practically a gift. The subsidy (BAFA) significantly exceeds the costs of developing the heat sources.

Unfortunately not entirely, around €3000 additional costs will remain with the expert report and approval, etc.

What do you think about passive cooling, is it sensible or just a gimmick?
I have some concerns about condensation...

Unfortunately not quite, around €3000 extra costs will remain with the expert and approval etc. What do you think about passive cooling, useful or just a gimmick? I have some concerns about condensation water...

nonsense, do it. I have an active air-water heat pump, it's great.