"Christian McArdle" wrote in message
...
Matt, again..."If the system is not re-dosed, and 95% are not, then the
Magnaclean prevents blockages". Got it?

The same ignorance that would cause people not to replenish their
inhibitor
will predicate against the use of an expensive alternative.

If it is fitted on a boiler change or new installation then it is there,
even when the house changes hands and the new owners are ignorant of
inhibitor. How any service engineers replace inhibitor? How many bother to
check if it has been replaced?