Describe the available wall surfaces accurately
The catalogue of measures from IG Lebenszyklus Bau and klimaaktiv names sufficient wall surfaces as a prerequisite for wall heating planning. It also points out the danger of drilled pipes and the limited possibilities for wall fixings. [WAND] These basic questions concern later use and not only the day of installation.
Draw the planned furniture and your desired wall uses into a discussion sketch. Mark what is fixed and what is only an idea. The specialist planning should explain which surfaces are required for the proposed solution and how your wishes can be taken into account. The article does not specify furniture clearances or permissible fixing points.
Do not derive the system from a free square metre figure
In the fictitious example the largest free wall is later intended to accommodate a tall bookcase. This information was missing from the first draft. The owners raise it before the system is chosen and have it explained whether the planned heat output still fits under the actual furnishings or whether another solution is required.
The existing heating system and the room’s heat demand also belong in the specialist assessment. The article gives no blanket output per area and no flow temperature. A visually available wall is not declared the technically sufficient heating system for that reason alone.
Consider later changes
Ask for clear documentation of the installed pipe areas and for instructions for future work. It should be findable for those who later want to hang pictures, shelves or other items. An approximately remembered location or a photo of a similar system is not sufficient as an independent drilling authorisation.
If a later change of use is planned, have it explained which further enquiries will then be necessary. You do not have to fix the furnishings forever. What matters is that a change is not carried out unintentionally on an unknown technical surface.
A joint plan instead of two separate drafts
Request a coherent presentation of the intended heating and the furnishings. Indicate in the brief which furniture assumptions are the basis. If a different heating solution follows from this, it should be explained based on the same room use. This article does not decide between wall, floor and radiator systems.
The preparatory guidance applies to Austria and uses the specialist catalogue of October 2023 only for the narrow reference to surfaces and fixings. It is not an approval of a specific wall, a pipe connection or a cooling function. Execution and later technical interventions remain in the hands of the responsible specialists.