Can I put a Smart controller on to an existing cylinder?

We would love to be able to put Smart control on every hot water cylinder in NZ, but due to electrical compliance requirements we can only supply these as part of a complete unit – the Rinnai Smart Cylinder™.

There are also complexities with selling the Smart controller as a standalone item, as the control is developed specifically for each size hot water cylinder, to ensure maximum efficiency as well as for safety reasons.