alt Hacker NewsI agree, that's a total failure of the Berlin government, they even ordered new U-bahn without A/C. As for S-bahn, most are air conditioned. I take the ring bahn to work and it's ACed.
There was one day it didn't cooled down at nice for this year (when day temperature went close to 40 degrees). Other than that, for I sleep with all windows open and I create an airflow with two fans. The apartment gets cooled during night and during the day I just keep the curtains closed. It hasn't gone above 25 degrees inside the apartment during the day time.
> they even ordered new U-bahn without A/C
AC is fairly problematic for narrow underground tunnels. This is one upside of the massive 9m diameter tunnels being used for a lot of new underground lines; way easier to ventilate. But, ah, not something you can really retrofit.
It could be worse, however: https://en.wikipedia.org/wiki/London_Underground_cooling