Costs for the heating & sanitary trade

What I found interesting about it was that he does the planning beforehand, but only goes in once the interior plaster is done. Then he installs everything, connects everything, and closes up the walls again. That sounded to us, who build through individual contracts, like coordination with as few interfaces as possible.

Hi,
I imagine that to be interesting with underfloor heating...
Best regards, Olli

Oh, I have already experienced construction projects where the underfloor heating was later milled in the new building. So there is actually nothing that doesn’t exist.

In my eyes, the approach is completely pointless, but the client decides, since he is the one who pays.

So update from me: I received an offer from a system provider with intermediary activity: about 49,000 EUR for air-water heat pump + ventilation from Wolf, underfloor heating and rough installation including assembly and planning excluding sanitary ceramics. A bit at the upper end for me, but with the option of doing some work myself. However, I still need the list of which partial works should cost how much. Actually, I only trust myself to lay the insulation and heating coils, which probably won't be much cheaper...

Schuppdiwupp, here it is already. 2300 EUR for installing underfloor heating including edge insulation strips and insulation and just under 2500 EUR for the sub-insulation. So a total of just under 5 TEUR. That could definitely be worthwhile. The question is, how difficult is something like this and what are the consequences of mistakes?

I personally would stay away from it. However, the cost framework seems quite OK when you look at the values of the [BAFA-Förderung].

Maybe you can try to renegotiate the position underfloor heating from the heating circuit distributor + the insulation very intensively, with the risk that the subsidized part of the heating system becomes more expensive?

Maybe it can be resolved with the keyword "[Bafa]" then?

Hello everyone,

I have finally received an offer from a very interested company (around the corner from the construction site) that is not an intermediary.
The total amount is actually quite interesting. There are only a few items that I don’t fully understand, especially a buffer, but for the water storage tank. On the one hand, people say buffers are always bad, but on the other hand, as far as I know, that refers to buffers for the underfloor heating. Here it is for the uniTower, so the domestic hot water tank. Maybe not so bad after all?
It is supposed to prevent the heat pump from switching on too often. So actually the opposite of what is usually criticized about buffering here. I am only skeptical because in the description of this buffer in the various shops where it could be purchased, only the Arotherm Split is mentioned as the compatible heat pump. There is nothing about the aroTherm Plus.
Well, I will definitely question the installer about this.
The descaling system is missing, but partly my fault because I wrote about it in the first email, but forgot it in the "tender".
Under insulation is missing – does anyone know what something like that costs? About 82m² 10cm on the ground floor and the same again 8cm on the upper floor.
Circulation could maybe be omitted...
He apparently wants to put ventilation valves partly into the floor now; I don’t know if the execution planning still allows that.
Question to the group: does that fit from your point of view?
I will also inquire whether he can shift the cost weighting more toward the heat pump and controlled residential ventilation since I still have some funding amount "available."

Below is the offer: