Not sure whether is it power/cost saving coz im not the one paying for the house but im sure of one thing .... not even 1yr of using it is not working for 2,3times , im using Rega 118 .....
I'm using PrimeLife $280 for it plus installation.
So far so good. We use it daily, at least 3-4 times a day. Electrical bill is ok, not alot. My hb tried staring at how fast the meter move while I shower but it's still ok (better than electric kettle).
Did not come across Rega while doing our 'research' for multi-point heaters. Only came across PrimeLife and Bennet (forgot the spelling).