Are these worth it? It's for a like for like combi boiler replacement and I've not long ago had half my radiators replaced for new ones. I'm siding with the standard chemical flush being sufficient but wanted your views.
Just had the pleasure of getting a new boiler as well and for the cost it wasn't worth debating it if i remember.
Think they are more of a standard nowadays because the new intakes are smaller to the newer boilers? (or some reason new boilers need them more then past ones did).
I believe it is in the heat exchanger where they get blocked as the pipes split of into small channels.
Anyway, I've had a slight change of heart after doing some more reading into the boilers. The flue for the boiler has to clear the eaves of my roof (bungalow) and it will look ridiculous. On top of this, they produce a lot more water vapour that is also acidic and don't want that going all over my garden. I'll readdress this later with potentially moving it to my loft. Hopefully my current boiler can be given a bit more life.
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