shower

[saleem]

Hi,I am going to have fitted two showers in my to bathrooms.I am thinking to have walk in shower in one bath room and mixer shower over bath .Both will be gettig cold and hot water suply from combi boiler.I have shower room on first floor and second bath room on second floor.My main worry is when both showers are used togather ,might not have enough pressure.Can we fit a pump to bost pressure to both showers, if so what type and size.One thing for sure, i do not want any storage tank in the house.Are electric showers costly to run than taking feed from combi boilers.
please shed some lite on this topic.Thank you.

 

[baxpoti]

My main worry is when both showers are used togather ,might not have enough pressure.Can we fit a pump to bost pressure to both showers

The pressure is not normally the problem, but the flow rate is, a decent shower will demand approx 20 lts/min at 40°C Hot and cold mixed.

If your lucky enough to have at least 40 lts/min for two showers, a combi may be ok in summer when the incoming cold is already 15°C+ but it'll struggle in winter to heat (mildly warm) 40lts/min with cold mains at 5°C.

The most powerful combis I know off will give you a constant 16lts/min at 35°C rise. Work it out from there.

These are approx figures but you should get the idea.

Fitting a pump to increase the pressure, no

Electric shower, yes

 

[pannierstan]

The pressure is not normally the problem, but the flow rate is, a decent shower will demand approx 20 lts/min at 40°C Hot and cold mixed.

WHAT Are you telling me that if you put the plug in your bath and turn the shower on it fills quicker than the hot tap!!
Any normal shower head will only flow about 10ltrs per min and thats hot AND cold so the demand on the boiler is possibly 7 or 8

Are you talking about showers with ceiling roses the size of the moon and 200 body jets

Stan

 

[baxpoti]

WHAT Are you telling me that if you put the plug in your bath and turn the shower on it fills quicker than the hot tap!!

My Aqualisa Quartz will.

Any normal shower head will only flow about 10ltrs per min and thats hot AND cold so the demand on the boiler is possibly 7 or 8

It is February, Just measured mine at 15lt/min at 40°C! I did say a decent shower and the figures are approximates (Aqualisa say the Quartz will handle up to 25Lts/min at the shower head)

Are you talking about showers with ceiling roses the size of the moon and 200 body jets

No
I take it your exaggerating!

Agreed, you can run two showers but it'll take twice as long to wash!

Going back to the original OP the showers are going to be on different levels, I bet the bottom one gets the majority of hot water.

 

[saleem]

WHAT Are you telling me that if you put the plug in your bath and turn the shower on it fills quicker than the hot tap!!

My Aqualisa Quartz will.

Any normal shower head will only flow about 10ltrs per min and thats hot AND cold so the demand on the boiler is possibly 7 or 8

It is February, Just measured mine at 15lt/min at 40°C! I did say a decent shower and the figures are approximates (Aqualisa say the Quartz will handle up to 25Lts/min at the shower head)

Are you talking about showers with ceiling roses the size of the moon and 200 body jets

No
I take it your exaggerating!

Agreed, you can run two showers but it'll take twice as long to wash!

Going back to the original OP the showers are going to be on different levels, I bet the bottom one gets the majority of hot water.

Thank,s guys for detailed discuss on this subject.If i install electric shower on first floor and fit normal shower mixer over bath on second floor,would it have reasonable flow rate.At my presant house i have no problem with flow rate in my bath room even if kitchen sink tap is running.I am going to replace led service pipe in my new house as i did in my presant house.