Pump assisted showers with or without combi boilers?

[Longshanks]

Hi All

About to embark on bathroom upgrade and replace conventional boiler with condensor combi at the same time.

I just need to be clear about the different shower arrangements (not electric-that's out of the equation).

Gist is that we will be replacing 9.5KW Gainsboro with a shower supplied by the combi. The bloke who will do the job said it should provide a very decent shower etc etc. It's just that my in laws have a combi and also have a pull cord switch to start the pump to assist their shower (not electric) and they obviously needed that even with a combi. I should have said that we both live in bog standard 3 bed semis etc.

I know there are:

Gravity mixer
Power (with pump)
Power (with separate pump)
etc

Your views and experience would be appreciated.

Thanks

L

 

[bengasman]

combi will give better shower than electric one.
your inlaws had a cowboy do the work if there is a pump on the combi fed shower

 

[swidders]

Since you're not meant to stick a pump on to improve mains pressure, your inlaws have a very questionable system.

Water will come out of your taps (hot and cold) and hence shower at mains pressure - if this is good enough then you'll get a good shower. Since you already have an electric shower that doesn't keep cutting out due to low pressure, then you are probably going to be fine. Hopefully the installers will have tested the mains anyway and given you correct advice.

 

[gas4you]

As stated above, a combi system cannot have any form of pumped shower

If pressure is low, then the only way to improve it is to install an accumulator on the incoming cold mains supply

 

[Longshanks]

Many thanks

That;s what I thought.

L