Low pressure on my shower - Grohe Freehander - WHY

Joined
8 May 2009
Messages
70
Reaction score
0
Location
Sussex
Country
United Kingdom
Ok, Im trying to sort out a few plumbing/heating issues within my house.

Im getting a new boiler fitted in the next couple of weeks. Still not decided on which one but looking towards the Remeha Advanta 35c
( see seperate post) //www.diynot.com/forums/viewtopic.php?t=236108

Another problem i have been living with for far to long is the low pressure coming out of the shower.
When fitted it was part of the same job that the plumber did. New boiler/bathroom etc.
He recommended a Grohe Freehander shower with a Grohe Automatic 2000 thermastatic valve.
He'd fitted them before and said they were good with a good pressure.
The pressure was never good and we were left believing it was the best pressure we would ever get.

As the boiler is been changed i am thinking of stripping it a seeing if i can see why the pressure may be low.
The technical information says i should be getting 12.5 L/min with one head on and 18.1L/min with two heads on.
Ive put a bucket under the shower and timed a minite and am only getting 6L/min whether one or two heads are on.

What can i look at to try and solve the problem without hacking tiles off?
 
Sponsored Links
all that and we don't know what supplies the shower.

and did you read what the showerhead requires ?

Min. recommended pressure with
1/2" valve 2.0 bar
Min. recommended pressure with 3/4" valve 1.0 bar
 
all that and we don't know what supplies the shower.

and did you read what the showerhead requires ?

Min. recommended pressure with
1/2" valve 2.0 bar
Min. recommended pressure with 3/4" valve 1.0 bar

So firstly how do i find out if i have 1/2" valve or 3/4" valve.
And im assuming the pressure is the hot/cold water flowing through the boiler.
The current boiler is a Halstead Ace High.
How do i test this?
 
Sponsored Links

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.


Are you a trade or supplier? You can create your listing free at DIYnot Local

 
Back
Top