Duncan McCaffray
What have they replaced? Flues are for removing products of combustion and for providing air for combustion and cooling. Worcester promise a fixed price repair and have now decided that your job is going to start costing them money so they have passed the responsibility of fixing it on you by saying that it is basically unrepairable. Have one last go at it by not phoning Worcester and get a gas fitter from rated people with good reviews and avoid large bills from Worcester in the region of what.... something like 275 plus VAT and no fix!!??