Planning the new bathroom layout. To save moving electrics (I wouldn't want to upset the Part P police) my wife is asking about replacing old electric shower with a mixer tap. The CH system is a sealed system running from a Vaillant ecomax, so there is no storage or header tank, so I assume mains pressure would be adequate? But I seem to recall the plumber who fitted the boiler muttering about not being able to have a mixer. Is this right?
TIA
ZD