Mira Advance 8.7KW, very poor water flow rate

[Blissof89]

Just been to see a friend who has a Mira advance 8.7 in his flat. Flow rate of the water is terrible, he was saying he had looked online and seen they do 11KW showers and was asking if he could change if for a bigger one.

Does anyone have any experience with the Mira Advance? Is the water flow always ---- poor? It seems really bad for an 8.7KW shower, I usually fit Triton 7.5KW's at work cause we only have 32A supply to work with and they seem better than this.

11KW shower seems a bit overkill to me but i could do it, 10mm T&E feeding the current shower, rm B and only <10M from DB to shower.

I'm starting to wonder if pressure is just very bad don't want him to spunk £300 on a new shower and have same problem.

 

[Leesparkykent]

Just been to see a friend who has a Mira advance 8.7 in his flat. Flow rate of the water is terrible, he was saying he had looked online and seen they do 11KW showers and was asking if he could change if for a bigger one.

Does anyone have any experience with the Mira Advance? Is the water flow always **** poor? It seems really bad for an 8.7KW shower, I usually fit Triton 7.5KW's at work cause we only have 32A supply to work with and they seem better than this.

11KW shower seems a bit overkill to me but i could do it, 10mm T&E feeding the current shower, rm B and only <10M from DB to shower.

I'm starting to wonder if pressure is just very bad don't want him to spunk £300 on a new shower and have same problem.

What flow rate and pressure are you dealing with?

 

[buzzlightyear]

Try a new pressure switch .

 

[Daniel Oake]

In my experience it sounds like his pressure, if it's gravity fed system I think you achieve something like half a bar of pressure for every meter dropped. increasing his shower KW isn't going to make a difference unless your saying its not heating up enough

 

[buzzlightyear]

Look on fluetube it will show you what to look for regarding showers.

 

[Blissof89]

I'm not sure on what his incoming pressure is like, I'll text him and see what its like on his other taps stuff.

Its an old ex council flat so I guess some of the infrastructure isn't great, think he on zone heating and hot water still hence the need for an electric shower.

I think he knows another lad who is a plumber so maybe he can enlighten us on what the pressure is like coming into the flat.

 

[buzzlightyear]

You can always know if you have good pressure if the kettle goes on quick.

 

[Andy78]

Could be water pressure, could be an internal part of the shower, could be as simple as descaling the shower head.

 

[GBDamo]

In my experience it sounds like his pressure, if it's gravity fed system I think you achieve something like half a bar of pressure for every meter dropped. increasing his shower KW isn't going to make a difference unless your saying its not heating up enough

0.1 bar/m roughly, so if hes gravity fed from a loft tank his pressure could be really poor.

 

[buzzlightyear]

Shower doctor you tune.