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- 14 Aug 2010
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I'm just about to start a bathroom refit, and I'm contemplating getting rid of the old 8.5Kw electric shower and replacing with a thermostatic mixer.
The rationale behind this is that we had a combi boiler and new rads fitted when we moved in 2 years ago, in place of the old condenser and h/w tank. Wiring to the existing shower is 6mm cable and fitting 10mm to allow a more powerful unit would be a PITA - it's on the upper floor of the house and a long way from the supply unit.
Thermostatic shower seemed the way to go, but on investigation, it appears that the cold water header tank is still in use for all the cold water supply in our house. We don't have strong mains pressure - 1.0bar if we're lucky, so what I'm trying to figure out is whether plumbing in the shower from the hot and cold supply to the bath will be a problem.
As an alternative, it would be possible to use the mains cold supply for the electric shower for the new shower, but then I'd have either a rising hot/falling cold supply for the thermostatic unit, or I'd have to run the cold supply down the wall and under the bath to bring them both up from below.
I'd appreciate any advice on how best to resolve this.
One other piece of info that may be pertinent - there's some influence being brought to bear by the local authority on Scottish Water to sort out the pressure on the mains supply to our village, so there is the possibility the mains pressure may increase at some point.
The rationale behind this is that we had a combi boiler and new rads fitted when we moved in 2 years ago, in place of the old condenser and h/w tank. Wiring to the existing shower is 6mm cable and fitting 10mm to allow a more powerful unit would be a PITA - it's on the upper floor of the house and a long way from the supply unit.
Thermostatic shower seemed the way to go, but on investigation, it appears that the cold water header tank is still in use for all the cold water supply in our house. We don't have strong mains pressure - 1.0bar if we're lucky, so what I'm trying to figure out is whether plumbing in the shower from the hot and cold supply to the bath will be a problem.
As an alternative, it would be possible to use the mains cold supply for the electric shower for the new shower, but then I'd have either a rising hot/falling cold supply for the thermostatic unit, or I'd have to run the cold supply down the wall and under the bath to bring them both up from below.
I'd appreciate any advice on how best to resolve this.
One other piece of info that may be pertinent - there's some influence being brought to bear by the local authority on Scottish Water to sort out the pressure on the mains supply to our village, so there is the possibility the mains pressure may increase at some point.