Experiences with brine heat pump

So different averages are found in the heat pump consumption database.

I think it is good and right to question things. That way, a topic can be discussed reasonably and factually.
May I ask for your personal opinion or experiences? Do you have a brine-water heat pump with different, better, or worse experiences?
Have you possibly preferred gas for understandable reasons?
Or do you want to critically question out of pure interest?

It doesn't matter whether it's a few years sooner or later. However, the payback period is well over 50 years. You can't sugarcoat that or drink it away.

Economically, the air heat pump is almost always ahead of the ground heat pump. Unless it is distorted by subsidies...

Or through own work. Especially in the form of a [Ringgrabenkollektor]. However, this option is (unfortunately) not viable for most.

I think it is good and right to question. That way, a topic can be discussed reasonably and factually. May I ask for your personal opinion or experiences? Do you have a brine-water heat pump with other, better, or worse experiences? Have you possibly preferred gas for understandable reasons? Or do you want to question critically out of pure interest?

I have my experiences from my brine heat pump and about 5 air-water heat pumps in my immediate neighborhood, where there are always significantly larger differences with comparable house/living areas than others describe. Of course, user behavior also plays a role, which alone cannot explain such clear differences. Definitely, the brine drilling pays off for me compared to the consumption in my environment if electricity prices remain the same and do not rise, in about 25 years. The colder the region you live in, the more this shifts in the direction of brine heat pumps. there is no amortization, because heating systems only cost money but do not generate income. Neither clever calculations nor drinking help with that.

Especially with heat pumps, correct sizing and user behavior play a crucial role. High supply temperatures, on/off operation and/or room thermostats, possibly buffers, often spoil the efficiency.

Therefore, my tip is to invest money wisely in planning. Then we are still in a range of about 60 years until the more expensive variant ([Sole-Wasser-Wärmepumpe]) pays off.

Can you share the exact consumption of the neighbors and yourself including living area and "Energiestandard" here? That would certainly be a good practical tip for future home builders.

All information about my house has already been provided here. I do not disclose anything about my neighbors due to data protection. For me, it is a loose period of about 25 years. I firmly reject the flat 60 years. Planning should be done properly anyway.