Hi all. Just having our shower room done up. We have a 8.5 kw electric shower which we've had for 4 years...it's great with no probs. Howerver it doesn't look great and we fancy the stainless steel looking shower with pipework buried in the wall...are they called mixer showers and do they work off our combi boiler ? With our present shower if someone turns taps on somewhere in the house the shower isn't affected but someone has said that the mixer shower could go hot or cold if people start turning taps on. Anyone got any advice ? Thanks,