Air-to-air heat pump vs air-to-water heat pump vs ring trench collector - differences

Yesterday, besides the currently favored LW heat pump or gas heating, I also came across the ring trench collector heat pump. The following questions come to mind:
Main concern: - I imagine that laying it myself after renting an excavator is feasible for the DIY project, but in the strip where the ring trench collector is laid, no plants will grow later due to the frost. How far does this cold radiate, i.e., how wide is the exclusion zone around the ring trench collector for plants, trees, bushes, etc.?
Secondary topic: - I actually always have to hire a paid expert beforehand who assesses whether my soil is even suitable, right?

Above our collector are trees, shrubs, partly hedges, flowers, lawn, .... You don’t need any spacing at all.

You can assess the soil yourself; there are plenty of threads about it in the pink forum. As long as you don’t have rock and the property is of a solid size, there are hardly any cases where it doesn’t work.

Now really? I always thought that the frost that forms below the frost line would drain so much energy from the plants that they would not be viable in a certain area of the ring trench collector.

How deep is your ring trench collector or do you have a surface collector? 1.5 or even 2 m deep?

Rosa Forum is a synonym for Haustechnik-F, right?

Your interpretation of rosa is correct

My trench collector is 1.5m deep. Of course, energy is extracted, but I have not noticed any effects on the vegetation compared to my neighbors. You will also read similar things in the mentioned forum.

Your interpretation of pink is correct

My trench collector is 1.5m deep. Clearly, energy is extracted, but I have not noticed any impact on the vegetation compared to my neighbors. You will also read similar things in the mentioned forum.

What went wrong with your neighbors?? Or do you mean that they also have trench collectors and no problems?

Yesterday, besides the currently favored air-to-water heat pump or gas heating, I also came across the ring trench collector heat pump. The following questions come to mind:
Main concern: - I imagine the installation is feasible as a DIY project after renting an excavator, but in the strip where the ring trench collector is installed, due to frost, no plants will grow later on. How far does this cold radiate, i.e., how wide is the exclusion zone around the ring trench collector for plants, trees, bushes, etc.?

This is a persistent rumor that is not true. A ring trench collector is usually located 1.5 m underground. Yes, it extracts energy from the soil, but by no means enough to create a desert or permafrost soil. You can plant plants and trees normally above the ring trench collector. The "frost" you mentioned is a freezing around the pipes (which is even intended). However, this only happens underground and will hardly show on the surface. Also, lifting and settling of the soil is extremely unlikely at that depth. And no, there is no snow in June where the ring trench collector is installed.

It is roughly like saying: the outdoor unit of the air-to-water heat pump is always covered in snow because the air has energy taken from it.

You can also assess the soil yourself with the finger test ( ) or read it from your soil report.

Yes, so they were fake news. About oil heating or hot water heat pump or whoever else

Thank you!

how do you actually decide now or which way are you leaning?