I don't know what "Vindobonism" means so I googled it, and it gets exactly one hit - your post. YAY! (Now probably two, since I just quoted it.)
So I don't know if Rauchfangkehrer is what you suspect it to be, it's a word I'd recognize, in any case. Schornsteinfeger is the one that's most used, I think it's the one that's not regional. I don't know how it is in other countries, here the Schornsteine are checked regularly (yearly?) by the appointed Bezirksschornsteinfegermeister - who only last (or this?) year lost their monopoly on these jobs, btw. They check emissions, no matter if that's from real fires or other heating systems. Ours is coming next week, incidentally.
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So I don't know if Rauchfangkehrer is what you suspect it to be, it's a word I'd recognize, in any case. Schornsteinfeger is the one that's most used, I think it's the one that's not regional. I don't know how it is in other countries, here the Schornsteine are checked regularly (yearly?) by the appointed Bezirksschornsteinfegermeister - who only last (or this?) year lost their monopoly on these jobs, btw. They check emissions, no matter if that's from real fires or other heating systems. Ours is coming next week, incidentally.