I had my boiler serviced yesterday, and the British Gas engineer recommended installing a MagnaClean. He didn't seem pushy and in fact he said I could probably get it installed cheaper by someone other than British Gas, but it would help prolong the life of my boiler by helping to collect the sludge.
He reckoned it would be around £300 installed all-in, because there wasn't really room to install it by my boiler, so it would need to go in my airing cupboard with the pipes being moved around a bit to get it in the right place (otherwise it would be cheaper to install).
Does anyone have any experience with these ?
If it really would help my boiler out, given how expensive a new boiler can be, then I'd consider it.