Commercial toilet zoning

Lack of visible heater may raise visitors' expectations to lashings of hot warer, one of these will keep them suitably low!

Don’t forget the ‘This hot water is hot’ notice…

If it's a disabled toilet then I don't think you're allowed[*] for the water to be hot, it should regulated down to a non-scalding temperature - 41C here:

I have used something similar in the garage for 10 years. It does a good job, particularly with the spray head.

What might be an issue for the OP, if public loos I've used are anything to go by, is that so many people can't be bothered to turn the water off when they've finished washing. That's bad enough with a large tankful of hot water, but with a 3kW supply going continuously you could be running through a pound an hour! Are there any with built-in timers?

Ok all. My main interest was electrical safety rules for what may be a

The Triton is a step forward from the existing 1960's Heatrae Sadia water heater but I already have the undersink unit, expansion chamber and pressure reducer together with a sink unit fitted with separate hot/cold taps.