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I have a Junkers central heating water boiler which I would like to have serviced. I have been trying for a couple of years to find a registered plumber with them but nobody seems to be able to help. I am in a small village Bore in the province of Parma, Emilia Romagno. Can anybody advise. A local plumber said he was unable to carry out the work. There is nothing wrong with it but I understand it is a legal requirement.