"A.Lee" wrote in message
.. .
Doctor Drivel wrote:

On the CH return to the boiler fit this filter:

http://www.mytub.co.uk/product_infor...product=313159
Cheap enough to buy.

For £108, I think i'll stick with the 'thorough flush every ten years'
method. For a new boiler it may act as peace of mind, but on an old one
it is a poor cost/benefit ratio IMO.

Then it is you that suffers the breakdowns and corrosion.