Possible causes of unstable hot water in a multi-storey building

In an apartment building, hot water flows from below. On the 4th floor, hot water can be obtained by draining for a long time, and the 5th is slightly better, but also need to be drained. Above the 5th and below the 4th mountains. water goes as it should. Tell me the possible reasons.
Nataliya

Expert Answer

Hello, Natalia.

The problem described by you indicates improper installation or malfunctioning of water-folding equipment at your neighbors. For example, if there are no check valves in the areas of apartment entry, then even the most ordinary cartridge mixer can serve as a reason, which will mix water from the hot main into the cold one.

The same is observed with improper installation of storage water heaters or the illegal connection of additional radiators, underfloor heating systems to the hot water pipeline, etc. Perhaps, to understand the reason for such a strange phenomenon, it is enough to talk with neighbors?

If the problem described by you is systematic, that is, there were errors in the installation of utilities at the construction stage, contact the house management company. Alteration of your input to the circulation mode of operation can completely eliminate this trouble.