But the museum in question is a village house, I'm pretty sure they don't have central heating.
[0] (in Russian) https://www.garant.ru/news/1155577/
Efficiency of any infrastructure depends on it's physical condition, and technocratic abilities[0] of local governments; both are ok where I live, but mostly much worse in smaller cities.
[0] for the lack of better terminology. I can't talk about "quality" of Mayor's work in general, for it should include not stealing votes, representing actual people etc.
And, somewhere in here there's a parable about capitalism. The engineers are correct that the district heating plant has economies of scale... but it's only as clean as your town's politics, and even a squeaky-clean mayor has to make a terrifying giant decision about whether to upgrade it, once every 30 years. Instead of every owner gossiping with his neighbors about what works & what breaks, and whether double glazing was worth it.