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-   -   Low water pressure in Flat (https://www.englishforum.ch/housing-general/253658-low-water-pressure-flat.html)

Chemmie 03.05.2016 11:44

Low water pressure in Flat
 
We've moved into a new flat, which is very lovely, however it is on the 7th floor and the water pressure is bad.


It's not terrible, but showering is very tough and long, and that valve that changes the flow from the faucet to the shower head doesn't always stay in 'shower' mode due to low pressure.


I haven't gotten a chance to ask the Hausmeister, thought I could get some advice here first before I go bother him.


Is there a law in Switzerland for minimum water pressure? Is there something I should try on my own first?




I've tried 2 sets of valves, one set under the sink (with a screw driver) was barely open, fully open I noticed no immediate difference. Another set, hidden under a closet has handles, and was closed.

roegner 03.05.2016 11:52

Re: Low water pressure in Flat
 
A law on water pressure? Never heard of


Best chance is to talk to your Hausmeister/Regie

st2lemans 03.05.2016 12:03

Re: Low water pressure in Flat
 
Move to a lower floor. :p

Pressure generally has nothing to do with the building, but rather the pressure head of the water supply. ;)

Tom

aSwissInTheUS 03.05.2016 12:05

Re: Low water pressure in Flat
 
Richtlinien für Trinkwasserinstallationen W3
http://www.svgw.ch/index.php?id=137&...cfaa993eb4cceb
(only a guideline not a law)

If this extract is correct it should be at least 1 bar.
http://www.sshl.ch/fileadmin/pdf/Kur...dispositiv.pdf

Chemmie 03.05.2016 12:05

Re: Low water pressure in Flat
 
Quote:

Originally Posted by roegner (Post 2582972)
A law on water pressure? Never heard of


Best chance is to talk to your Hausmeister/Regie



Yeah, it sounds strange, but I figured it is Switzerland.


I saw this quote from a good 8 years ago on EF


Quote:

In Germany the city is obliged to pump the water to the 6th floor. For higher buildings the builder has to install an extra pressure pump.

and it kinda makes sense, some countries have to provide a certain amount of heat/hot water, pressure regulations could be possible as well.

smoky 03.05.2016 12:06

Re: Low water pressure in Flat
 
Could it be kalk build-up in either the pipes - or the shower head/sink faucets?

fatmanfilms 03.05.2016 12:14

Re: Low water pressure in Flat
 
I put in a pressure pump on both hot & cold water, probably best to ask landlords permission first :D

Tom1234 03.05.2016 12:16

Re: Low water pressure in Flat
 
What's the water like in the shower with:

Only cold on?

Only hot on?

Chemmie 03.05.2016 12:42

Re: Low water pressure in Flat
 
Quote:

Originally Posted by smoky (Post 2582985)
Could it be kalk build-up in either the pipes - or the shower head/sink faucets?


I hope not, essentially a brand new flat (a couple years old, but the previous tenant barely used it -- lived abroad and worked a bit in Zurich)


Quote:

Originally Posted by fatmanfilms (Post 2582993)
I put in a pressure pump on both hot & cold water, probably best to ask landlords permission first :D


This might be the end solution if nothing else works---can you post a link with a system similar to yours? How loud is it?


Quote:

Originally Posted by Tom1234 (Post 2582995)
What's the water like in the shower with:

Only cold on?

Only hot on?


Just cold has barely enough pressure to have a stream out of the shower head. Just hot won't hold up the faucet-showerhead valve, so it's a fine line between getting shower water and it being warm.

fatmanfilms 03.05.2016 13:19

Re: Low water pressure in Flat
 
Quote:

Originally Posted by Chemmie (Post 2583029)
I hope not, essentially a brand new flat (a couple years old, but the previous tenant barely used it -- lived abroad and worked a bit in Zurich)





This might be the end solution if nothing else works---can you post a link with a system similar to yours? How loud is it?





Just cold has barely enough pressure to have a stream out of the shower head. Just hot won't hold up the faucet-showerhead valve, so it's a fine line between getting shower water and it being warm.

First link from google http://www.salamanderpumps.co.uk/pumps/home-boost/

The pump only runs when the water is running, the only time I ever heard it was after flushing the toilet, the pump being on the roof 60cm above the upstairs bathroom. If your on the roof you can hear it, it's no louder than the pump of a washing machine, probably quieter. Running a bath is much louder than the pump.

Tom1234 03.05.2016 13:51

Re: Low water pressure in Flat
 
Quote:

Originally Posted by fatmanfilms (Post 2583045)
First link from google http://www.salamanderpumps.co.uk/pumps/home-boost/

The pump only runs when the water is running, the only time I ever heard it was after flushing the toilet, the pump being on the roof 60cm above the upstairs bathroom. If your on the roof you can hear it, it's no louder than the pump of a washing machine, probably quieter. Running a bath is much louder than the pump.

Although, if he doesn't have his own boiler then he could need two pumps, one for the hot and one for the cold - if his cold is really low pressure as well (which it is, as he wrote).

I fitted one on the shower back in the U.K. as the pressure really was quite low. It worked a treat until one of the internal seals broke and flooded downstairs very fast with high-pressure water.
That's something to consider if you are at the top of a shared building).

fatmanfilms 03.05.2016 14:33

Re: Low water pressure in Flat
 
Quote:

Originally Posted by Tom1234 (Post 2583065)
Although, if he doesn't have his own boiler then he could need two pumps, one for the hot and one for the cold - if his cold is really low pressure as well (which it is, as he wrote).

I fitted one on the shower back in the U.K. as the pressure really was quite low. It worked a treat until one of the internal seals broke and flooded downstairs very fast with high-pressure water.
That's something to consider if you are at the top of a shared building).

I have 1 pump for both hot & cold connected the the outflow of the hot & cold tanks. I am at the top of a shared building, If I go away I turn off the pump, It's actually more of an issue for the people downstairs :D

me.anon 03.05.2016 14:45

Re: Low water pressure in Flat
 
Quote:

Originally Posted by Chemmie (Post 2582967)
We've moved into a new flat, which is very lovely, however it is on the 7th floor and the water pressure is bad.
. . .

Do your neighbours on the higher floors have the same problem ?
I'm not sure the anecdotes about UK plumbing enhancements will help much here.
Normally hot and cold water are at mains pressure here, and the system where there is a tank in the attic, with dead birds floating in it etc., supplying water to the household, is unknown.

Tom1234 03.05.2016 15:31

Re: Low water pressure in Flat
 
Quote:

Originally Posted by me.anon (Post 2583101)
I'm not sure the anecdotes about UK plumbing enhancements will help much here.

A pump will increase pressure in any country.

Quote:

Originally Posted by me.anon (Post 2583101)
Normally hot and cold water are at mains pressure here, and the system where there is a tank in the attic, with dead birds floating in it etc., supplying water to the household, is unknown.

They're getting less common in the U.K. too.

smackerjack 03.05.2016 15:31

Re: Low water pressure in Flat
 
As your flat is so new I would suspect a problem which you should take up with your landlord. I can't imagine such a new place having this issue.
My flat is 30 odd years old and the pressure is so hard that If you turn the tap full when you shower it really hurts you, I can't bear it, although for rinsing hair it is great.

Chemmie 03.05.2016 16:09

Re: Low water pressure in Flat
 
Quote:

Originally Posted by me.anon (Post 2583101)
Do your neighbours on the higher floors have the same problem ?.....


No one above us unfortunately



Quote:

Originally Posted by smackerjack (Post 2583127)
As your flat is so new I would suspect a problem which you should take up with your landlord. I can't imagine such a new place having this issue.
My flat is 30 odd years old and the pressure is so hard that If you turn the tap full when you shower it really hurts you, I can't bear it, although for rinsing hair it is great.



Usually I`m very happy with CH, the water pressure is usually so good, I didn't even bother trying it out before we took the place! It`s always a pleasure coming back home (before) and having good pressure

me.anon 03.05.2016 16:29

Re: Low water pressure in Flat
 
Quote:

Originally Posted by Tom1234 (Post 2583126)
A pump will increase pressure in any country.
. . .

From the physics, that may be so but the regulatory environment is not the same. From a practical point of view, you would have to find a pump on sale which was appropriate and permitted for the Swiss direct feed system. The Salamander pumps are not, at least that is my understanding of this exert form their installation guide:

Quote:

. . .
2.
Hot and cold supplies to the pump
Never fit the pump directly to the cold
water mains.
Never fit to communal risers (e.g. block of
flats) or secondary circuits that are pumped
. . .

neddy 03.05.2016 17:01

Re: Low water pressure in Flat
 
You should definitely ask your Hausmeister/Regi. Maybe there is yet another tap in the basement which regulates the water to your flat which hasn't been turned on properly.

Tom1234 03.05.2016 17:24

Re: Low water pressure in Flat
 
Quote:

Originally Posted by me.anon (Post 2583158)
From the physics, that may be so but the regulatory environment is not the same. From a practical point of view, you would have to find a pump on sale which was appropriate and permitted for the Swiss direct feed system. The Salamander pumps are not, at least that is my understanding of this exert form their installation guide:

That's true. People are assuming that's it's a new flat and not just a new flat to the OP.

If that's the case then there's either:
  1. An error in the design of the water supply system.
  2. An intentionally badly designed water supply system.
  3. An intentionally bad design of the water supply system due to constraints such as a low mains water pressure.
  4. An error in the construction of the water supply system.
  5. An error in the set-up of the water supply system.

The OP needs to discover which of the above, singly or in combination is causing the problem.
He'll also probably be fobbed off with excuses and lies by whoever was involved with the design and installation and he'll have to wade through all this to discover how to get it fixed, if at all possible.*

Hopefully he'll get it resolved so he can have a shower at the pressure he has come accustomed to here.

*I don't know of one building project in this country where this sort of thing hasn't occurred.

Chemmie 03.05.2016 17:27

Re: Low water pressure in Flat
 
Thank you all for the input. It is very humbling to know so many strangers support me in my personal quest for a relaxing shower :D


I will talk to the haus-dude asap and update you all on the situation!


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