Hot water for Showers in a HMO (Shared House)

[JohnP2500]

Hi All,

I am part way though converting a property into a House of Multiple Occupation. It will have 6 bedrooms (and six showers). It's my 1st conversion of this size so I have made a couple of school boy errors!

I had new GCH installed last year (Glow worm 30c). This provides heating and hot water to taps only.

Originally I planned to have 4 Electric showers and run 2 from the boiler.

At the moment I have finished 3 rooms, they have electric showers. The electrician is not keen to install a fourth electric shower. When the boiler was installed it was mentioned that the pressure was crap (not sure what it is) the flow is about 1o litres/Min.

In retrospect I should have increased the incoming main size (it's 15mm). It would be a right pain to do it now.

So the question is what to install to provide hot water for the 3 remaining showers. I have heard a lot about Mega Flow systems, but these don't seem to increase pressure?

Could I run the 3 showers from the boiler? (it's unlikely 3 people would shower at once)
Do I install one large water heater or 3 smaller ones?

Obviously I will be getting quotes and getting all work done professionally but I am struggling to know what to get quotes for?

I'm in Torquay so if anyone is interested in the work let me know. Thanks John

 

[Murdoch]

I've only got 8.5kw showers. Then relying on divergence? aka fingers crossed they don't all shower at once!

Your spark won't install a 4th

Matey - 3 is too many ......... so I'd recommend you get a new spark too - or is this DIY too?

Who's doing the alarm systems?

 

[Welder]

Tbh. The whole things a shower. MO props never do it right cos its all about the ££.

OP. If you wish to do it prop, i.e. not suffer complaints for the rest of eternity, just bite the bullet, get mains upgraded and get pro advice.

 

[Ric2013]

10l per minute is pretty poor even for a 15mm main.