Hi everyone

I have searched through as many forum posts as I can and now have a general idea of the answers to some of my shower questions but would really appreciate a pros specific advice.

The property is a studio flat, all electric no gas and is to be rented out to probably just one person. I am looking at the most cost effective solution for a shower, both buying/installing and running costs. My thinking is that as only one person will be living there an electric shower might be cheaper for them, rather than to heat up the hot water cylinder/immersion heater?. I understand that any shower rated 7.5kw or above will require a 10mm2 cable with the relevant sized RCBO.

1. Would an electric shower be cheaper to run than using a power/mixer shower with an immersion heater to heat the water?.

2. Mira appears to be the most recommended, I was looking at the Mira Sport but not sure whether to get the 9kw, 9.8kw or higher, is this a good, reliable model with out the bells and whistles of the Advance?

3. Is it that much more expensive per shower to run say a 10.8 kw than a 9.8kw or a 9.8kw than a 9kw?,

4. Will a 10.8kw/9.8kw flow be that much better at the same temperature than a 9.8kw/9kw?

5, The sparks I intend to use is qualified? but does not have Part “P”, does he need this in order to issue a certificate for the shower installation and overall electrical check of the studio?

Thanks in advance for your help.

5.......he needs to be Part P or the other option is that you notify the council, he does the work and then the council inspect and sign it off.

It will be worth checking to see if the plumber you will be using is Part P registered as some of ours are.

2........depends where you get it from, I was told. The Mira in the DIY shops are supposed to be inferior quality. I've just purchased a Triton direct from their clearance page on their website. There is an R4 9.5Kw for 120 quid.....I'm happy with mine!

3........more expensive, yes - much more? Doubt it - you don't shower for hours, do you?

You said it's a flat - what size supply do you have? Is it a submain from a meter cupboard and how is it supplied (SWA, 25mm tails, etc). You need to take this into account BEFORE you purchase a shower. 10.5KW could require a 45 amp MCB maybe a 50!!

BG

The boys will tell you Mira are far better than Triton

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thanks for all your replies - very helpful