

Rheem stainless HWS burning through elements.
Hi folks, I'd be grateful for help. I had a Rheem Stellar stainless 250l hot water service installed in 2021. Since that time it has burned through 4 elements. Not very stellar. In the first three cases, the element corroded and failed internally (according to the sparky). In the latest case, there is water leaking out of the electrical connections of the element (see photo).
The website says this model does not use a sacrificial anode.
I've had several electricians out to deal with this over the years and none can understand it.
The thermostat has been replaced more than once, with temp set appropriately.
Rheem say it shouldn't be happening but they haven't been much help beyond this.
Location BNE
Now onto my 5th element and I have spent more in 5 years on elements than the HWS itself, which ironically is supposed to last for years (stainless etc).