Plumbing – Hot Water issues in entire apartment, How to fix this

hot-waterplumbingwater-heater

We lease an apartment and the maintenance has been less than effective at fixing this issue so was wondering what other people think about it.

We've got 2 showers and 3 sinks, this issue is happening across all of them. The water 80% of the time is room temperature, it will then sometimes get hot after about 5-10 minutes. Then it will quickly run out.. but sometimes it doesn't and stays somewhat warm for about 30 minutes or so. In the winter it is freezing cold water instead of room temperature so you can see how that's an issue.

The temperature on the water heater itself was set to max 'VERY HOT' and it's still having the sames issues. I've decided to turn it down and nothing's really changed other than the water not being scalding when it does work.

I've taken a few pictures as well so we can look at what's going on.
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Best Answer

The pictures do not show anything useful, except that maybe the heater may be old.

it will quickly run out, the dip tube may be broken off.

The dip tube extends the inlet so that the cold water enters the tank at the bottom, below the hot water.

https://www.youtube.com/watch?v=9fnQEIx-anI