Replacement for Santon 1990s Regular Combination Unit -Immersion Heater

3 Oct 2020
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United Kingdom
Hi, we have the above supplying all hot water in 1930s semi, it was installed in around 1995.

Any advice on how long such a unit might last and what are the alternatives when it does need replacing? It is located above the bath. I understand that electrical regs may now mean we could not have a replacement unit put in the same place (??). Will this mean a huge bill as lots of work to re-engineer the pipework down through to kitchen etc? What kind of solutions might work?

Many thanks for any thoughts/help!
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