One day I realized something was wrong with the water in my apartment.
There was unstable water supply, and the boiler was giving unstable temperature.
I contacted technicians, but everyone gave different explanations — pipes.
Then I started looking for answers. That’s how I found this website: https://stroyka2001.kh.ua
There they clearly explain common water-related problems.
After reading a few articles, I understood the real cause.
It’s a useful site for home issues to anyone who wants to figure out water problems.