Our heating system is centrally controlled, is put on in October and turned off in May. One of the radiators is cold at the top and needs bleeding, but the nipple seems to be worn, so nothing happens when the key is used. What part needs to be replaced? Does anyone know of a reliable plumber in London Streatham who might do the job and can the job be done with the system on or does it need to wait until summer?
Thanks all
Thanks all