Heating children's room, bedroom, and bathroom

The information won't help.

By heating demand, it is not meant how warm you would like it, but how much energy is needed to actually reach this temperature. It depends on the insulation, room sizes, losses through windows, etc., and so on. You won't get anywhere without a professional. Otherwise, you will either have an inefficient system later or, in the worst case, will not reach the desired temperatures at all.

hmm ok :-/
i’m still running into a wall
why did they only install heaters downstairs back then

Hello Claudia,
setting aside the fact that the forum members who would like to help you do not know who is meant by

die

,

you also don't get anywhere with the statement

why did they only install heaters downstairs back then

.

You should collect the facts about the flow temperature and list them objectively if you hope for informative contributions from the user community.

that’s Yvonne’s advice

Yep, the information is very sparse.

Also, the following sentence

zu der Heizung kann ich nichts sagen. Das Haus stammt aus einer Erben Gemeinschafft und mein Onkel rückt die Papiere nicht vor dem Notar Termin raus.

sounds like you are renovating a house that doesn't legally belong to you yet? :eek:

...as if you were renovating a house that legally doesn’t even belong to you yet? :eek:

That’s exactly what struck me first as well.

What will you do if the uncle and the community of heirs don’t sell to you after all?

Otherwise, if you actually can get into the house already, you could at least check what kind of heating system is installed and, with that knowledge, find a competent heating engineer who can determine whether radiators can be additionally connected to this heating system at all, and if so, which ones.

I wouldn’t rely on statements from the mother or employees of the hardware store – they "don’t have to" live in the house later and deal with any possible consequences...

Regards,

Dirk

"the" my grandma and grandpa. The house belongs 50% to my mother and my uncle wants/has to sell it because of the ongoing costs.