Plumber or Heating Engineer...?
Decades ago the plumber dealt with all central heating because it is water in
pipes. These days central heating skills have become rather specialised and the
ability to deal with gas and electricity are just as essential for heating as
water. This mean the trade of 'Heating Engineer' is in the process of separating
from that of 'Plumber'.
Because this separation process hasn't finished and there is no consensus on
which work should be done by which trade, problems can be crop up for the member
of the public who calls a plumber to carry out some central heating work. I'll
write more on this over the next few days but to be clear, you should really ask
a heating engineer to do anything to do with central heating not a plumber. Some
tradesmen are fully competent in both areas but they are rare. The expertises
are definitely different these days and you should be aware.