My daughter has all electric heating, however, the lower economy 7 immersion has failed (high resistance short to earth).
I received what I consider a ridiculously high quote of over £400 to drain the tank and replace both immersions (upper boost immersion is working but 8 years old so I assume worthwhile replacing at the same time).
I'm a practical diy'er and ex electrician so considering doing it myself. It looks straightforward from the pics to: ensure all electrics are off, shut the cold water feed, open a hot water tap to drain pipes then drain the tank with a hose, but before I do is there any advice you prof's would give? e.g. loosening the immersions before draining, or does anything need to be done at the expansion tank before or after?
I received what I consider a ridiculously high quote of over £400 to drain the tank and replace both immersions (upper boost immersion is working but 8 years old so I assume worthwhile replacing at the same time).
I'm a practical diy'er and ex electrician so considering doing it myself. It looks straightforward from the pics to: ensure all electrics are off, shut the cold water feed, open a hot water tap to drain pipes then drain the tank with a hose, but before I do is there any advice you prof's would give? e.g. loosening the immersions before draining, or does anything need to be done at the expansion tank before or after?