Max Gulko wrote:
Hi I have next problem.Very often when I take a shower and somebody
open hot or cold water in the kitchen my shower recently changed to
cold water.You guess how can I fill after this and what I can tell to
person who did it ;-)
Is it something wrong with heater?Do I need replace it or adjust
properly? Thanks for advise.

If you are using a standard tank type water heater, it is not the
heater. (Tankless units are different).

Usually it is because you are mixing hot and cold water. When someone
turns on the hot somewhere else, the pressure for the hot goes down and you
get less hot water, but the same amount of cold. The problem is complicated
by old pipes with build up inside restricting flow, pipes too small or an
inadequate supply.

Most newer shower valves have some sort of device to reduce the effect.
Even changing the kitchen faucet to water saving variety may help.

If you have old plumbing, you may want to consider updating it. The old
stuff may well be close to the end of it's useful life and replacing it now
could save you a lot of damage later.

--
Joseph Meehan

Dia duit