Experiences with brine heat pump

The heating method is not economical with deep drilling, no matter where. Air-to-water heat pumps are always more economical in Germany.

Air-to-water heat pumps have other disadvantages, which personally do not bother me.

The type of heating is not economical with deep drilling, no matter where. Air-to-water heat pumps are always more economical in Germany.

Air-to-water heat pumps have other disadvantages, which personally do not bother me.

Wrong. Definitely different for me. Gas would actually be more economical for me, but since the city simply did not install a pipeline (which was more economical for the city), the drilling + brine heat pump was better.

The type of heating is not economical with deep drilling, no matter where. Air-to-water heat pumps are always more economical in Germany.

Air-to-water heat pumps have other disadvantages, which personally don't bother me.

The statement is only true if subsidies are not taken into account. Air-to-water heat pumps initially cost quite similar to ground source heat pumps. With the ground source heat pump, the source is added... with a €5,000 subsidy (which we, for example, received) a lot is already possible... Our neighbors paid about €8,800 for the drilling (and a €5,500 subsidy), so minus the subsidy that's €3,300. It doesn't take that long for this amount to pay off.

We, of course, are an extreme example with a trench collector, having paid under €2,500 for material + excavator + excavator operator (€1,500 material, i.e., brine pipe, distributor, antifreeze, house entry, cable ties, and €960 for the excavation work). About 4 days of own work by me (and 1 day of 5 hours laying by an additional friend, paid with beer and steak) are of course added (roughly 2 complete days planning the collector including reading up and ordering the material, 2 days supervising the excavator and laying). It was a fun project and even paid off directly with the €5,000 subsidy, as it was cheaper than the air-to-water heat pump after deducting the subsidy. However, the main reason was not financial; we just didn't want such an ugly device standing on the house, and as for exhaust air heat pumps, which are completely inside, I am really not a fan at all.

I think it's cool Tego, especially if you trust yourself to do it. But for the masses, your solution will be difficult to implement, because the heating engineer has to cooperate as well, many will probably refuse, I think. How was it for you?

The type of heating is not economical with deep drilling, no matter where. Air-to-water heat pumps are always more economical in Germany.

Air-to-water heat pumps have other disadvantages, which personally do not bother me.

You seem to know your stuff well, or do you just love generalizations?
Do you like to overlook the real cases presented to you here?

There is often a lot written and little proven in forums, unfortunately. I just checked again, when I compared the providers a few years ago, the geothermal drilling plus the connections would have cost 18,000 euros. The air heat pump cost 13,000 less after deducting subsidies. Thus, the payback period for geothermal energy was about 30 years. We then decided against it and have not regretted it so far.

At that time, I contacted 4 companies, their prices were not much different, so I think either it has become much cheaper by now (what actually becomes cheaper?), people only post part of the information (very likely), or it varies greatly by region (possible).