GeoffF100 wrote:If we trust the Consumers Association, we have to assume that they have done this competently.
I don't trust them and I don't assume they have done this competently.
If someone doesn't provide the data and their methodology, the first question has to be - what have they got to hide.
From reading their previous 'shock, horror' stories that have been designed to be picked up by the lazy press to generate Which? subscriptions they selectively pick the data to give the headline and fail to provide the detail which would enable any analysis of their conclusions.
In this case it is obvious that the age of the boiler will be a key factor as to whether a repair is needed. And yet they ignore that and simply focus on servicing, to make the fatal mistake of assuming that correlation is causation without stepping back and asking where is the actual evidence that servicing actually prevented the faults occurring and whether there was something else (like the age of the boiler) that was the issue.