Somehow I feel weird that one bathrooms water pressure is quite strong eg shower, sink, toilet.
But in another room the pressure seems quite so so, especially the shower heater. The sink and toilet I can feel it’s softer than the previous room I mentioned.

I thought water is controlled by the main pipe? Turning it off turns off the whole unit. So why is the water pressure different between rooms? I want to know if it’s something that’s controlled by some pumps by management besides the main pipe

Interesting if that can fix. Does the water go through any external pumps that’s different between rooms so that could be a possible reason?

Actually now I did some experiment. The pressure is just worst at the heater. Somehow it’s softer and softer each year although on random days the pressure will be better and just now I tried disconnecting the line from water pipe to heater the water pressure is quite good and strong enough to be considered normal.

Somehow after going through heater it’s just too weak. Is it possible heater has some sort thing inside controlling the pressure is now stuck/blocked? Using electrolux heater for about 10 years already.

Another one Panasonic no issue at all still strong.

This post has been edited by adrive: Jul 23 2020, 08:36 PM

Somehow can’t find stopcock for that particular room. Tried all possible stopcock visible from kitchen to washing machine and the other bathroom.

Perhaps may have another one hidden in the toilet ceiling closed by the board

Looks like at the end is the water heater stop valve filter that was too old. I also did find some stopcock on top of the other bathroom. But changing those didn’t seem to do much.

Removing the heater stop valve and connecting direct to the pipe yielded very strong water pressure. Time to get new stop valve filter.

This post has been edited by adrive: Jul 26 2020, 07:39 PM