New ask Hacker News story: Ask HN: Why not have a heating unit shared by many houses?

Ask HN: Why not have a heating unit shared by many houses?
1 by amichail | 4 comments on Hacker News.
Such a unit could be owned and maintained by the city. Wouldn't this be safer than expecting the owners of a house to maintain one? Similarly, you could have an air conditioning unit shared by many houses and maintained by the city.