Ellen Rawlinson wrote:

Hello! I'm rennovating a house that I intend to rent out. Essentially
I have two bathrooms, each of which is going to have a bath with
shower over. I want to be able to run both showers at once (as there
will be six people in the house), and my plumber thinks the only way
to do this is with electric showers. Does anyone know if there's a way
to run two showers (with thermostatic mixer valves) at the same time
off the one combi boiler I'll be putting in, or is my plumber right?


It is extrremely doubtful that a cheapo combi will have suffuicuinet
power to heat two showers going flat out simultaneously.

Combis I have expereinced struiggle to geat evben one, but then, I am
not a fan of combis

The solution is eiher a much bigger combi to cope with peak demands, or
a heat bank - which is basically a fancy name for a sort of hot water
tank- or a mains pressure boiler and pressurised hot water tank.

Cost and avaiable space will decide which is your best option.

What I tink is teh worts of all possible worlds ins a normal un
pressurised system with hot water cylinder and elkectric pumps to get
teh pressure.

I costed out various alternatives in my build, and space not being a
problem,. decided on mains pressure boiler and hot water tank. Even that
struggles with teh whole family here for holidays etc. I like a huge hot
bath, and that takes about 50% of a tank.

I susp[ect a BIG combi might have been cheaper, but even then two shower
max seems to be the order of the day.

I had little space for boilers but a lot for a water tank...so there ya go.






Thanks for your help,
Ellen