Instantaneous Electric Water Heaters & Thermostatic Taps

[cr0ft]

Hi all,

Does anyone know of a high power (9 or 12KW) instantanteous water heater than can be used with a separate thermostatic mixer tap?

I'm installing how water in a hospital lab and they want to avoid stored hot water if possible but all the systems I see won't work properly with a thermostatic mixer tap.

Any advice appreciated!