I garee most BG engineers are clueless, a friend who had a similar problem they couldn't fix and kept saying he needs a new heat exchanger which is not covered by their policy! that was a load of bull, the problem was the diverter valve and they just didn't want to replace it, one engineer who called knew it was the problem but botched it up by bending a micro switch leaver to get a few more days out of it, needless to say soon as he left he was back and ended up having to replace the diverter valve, I was invited by my friend to oversee what he would or should do, whilst I pretended to know nothing. I was there in case he came up with another bull! I am not a corgi registerd but I know how much nonesence goes on out there, registered engineers not able to find simple faults, ends up costing owners unnecessary bills! in some cases even a replacement boiler that could otherwise have been fixed cheaply and not even two years old! it is totally shocking!
Mike
January 2011