Hello can anyone share your advice on balancing central water heater vs individual water heaters?

My subsale unit has:
1.Central electrical water heater supply to kitchen and 2nd bathroom (very old)
2.Individual water heater for master heater (newer but not sure how old)

I'm thinking of replacing the central water heater but looking to see what are the pros and cons of central vs individual water heaters

Hi all,

Since water heaters definitely need electrical work - can anyone recommend reliable electricians near OKR/PJ area that are qualified/certified?

I've seen several posts recommending to find a good electrician but when searching online many seem like those "self taught" types. While I'm sure some may be good, I have doubts on whether they're actually up to date on the code requirements or all just learnt via trial and error. Electrical work isn't really one where you want to learn this way as a customer.

Also, how do you tell if an electrician is "qualifed/certified"?

Thanks so much for the detailed response !

Hi all
For Storage Type Heaters mounted using a bracket/frame on a vertical wall - do you check whats the maximum load that the wall can

Typically the tanks are 30kg upwards (weight when full), would appreciate some rules of thumb here please