Smart home for underfloor heating in a KfW40+ house?

In principle, you can be exempted from all sorts of things in the [Gebäudeenergiegesetz] and/or install substitute measures. Whether it gets approved is another matter. 95% ... well, that may be true for the mentioned engineer, but ultimately the local authority decides. Simply not installing it was our solution, which does not wake sleeping dogs.

Hello
I have a question about the ERR
we are currently also building a new semi-detached house

We have a KfW55 semi-detached house but we do not have our own heating; the entire building area is supplied with [Nahwärme].

The municipal utilities operate a combined heat and power plant for about 70 units in the building area and are supplied via [Nahwärme].
In the basement, we then have a small transfer station where the heat is handed over to us.

Is an ERR exemption possible for us as well?
We do not have a heating system that regulates itself automatically (e.g. air-to-water heat pump).

You can approach a very well-known engineering office on the internet (with this success rate), additionally the experiences from another meeting point for building services enthusiasts. The exemption is relatively easy to obtain, but must be applied for individually for your own project.

P.S. The exemption is explicitly provided for in the Building Energy Act legal text. Somewhere around § 100 +/-

Being well-known is not yet proof of quality. It's no different with engineering offices than with users. Better a poor response than none at all?

Being well-known is not proof of quality. It's no different for engineering firms than for users. Better a bad answer than none at all?

Being well-known is not proof of quality. Hundreds of positive experiences are. But since no links are allowed to be posted here and I am actually known for well-founded answers/experiences (and real estate has been my job for decades), you can safely believe that an ERR exemption is relatively easy to obtain ;)

Is an ERR exemption also possible with us?

In principle, an ERR exemption is always possible. However, you need someone (your heating planner) who can justify an exemption application so that you can submit the application.

Simply not obstructing was our solution, which doesn’t wake sleeping dogs.

That is the pragmatic approach :cool: