KFW 55 according to the new Energy Saving Ordinance

As a rule, this is not done by the installer themselves, but by a specialist company.

mh. well, I’ll have to see when things really get serious. I just wanted to inquire at the KFW regarding [Referenzberechnung], the website is more than poorly designed, can someone help me find something about it? Thanks

What are your experiences, do many heating installers install surface collectors or trench collectors? Is it possible to support with own work here?

Trench collectors are a often underestimated option. Especially if you do some work yourself, you can save quite a bit here. However, you also need a relatively large plot of land for this. I personally definitely consider it.

What are your experiences, do many heating installers install surface collectors or trench collectors? Can you also support with your own work here?

In my opinion, with the trench collector you cannot support but only do it completely yourself. You should clearly agree with the heating engineer where the handover point is (and whether filled or unfilled).

With some coordination and organizational effort, this is easy to manage! However, you should read extensively on the subject.

Also, with the trench collector, the extraction performance can be calculated relatively well, with the surface collector it is more of a rough estimate.

Usually the installer does not do this themselves, but a specialist company.

With us, most installers do it themselves, only the hole is logically dug by the civil engineer and maybe even the laying is pushed onto the installer, after all, it’s not rocket science.

I have also never heard of a specialist company for surface collectors.

I wanted to express that the heating engineer does not swing the excavator bucket.

ok, I'm with you on that... ;)