Given I replaced the immersion elements in Feb 2015 I questioned the maintenance companies call to replace the full immersion unit and tried to see if they could replace the thermostat only and this is the response I got: (of course the elements were only covered for 12 months labour and warranty)
“Thermostats in immersion heaters can be changed separately but this puts them at high risk and we do not recommend due to their constant use. Changing thermostat only, prolongs the inevitable.”
Is this bull?