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I installed the boiler in 1999 after researching all the different boilers on the market. At the time this boiler fitted all my criteria and slots in beautifully with the kitchen wall cupboards. The installation was simple and I am very impressed with the speed with which the water is heated. However it was not long before the first problem occurred. The gas would not ignite and eventually the boiler would lock off. Fortunately I have a service contract with British Gas who came out and discovered that the electrodes had corroded. This was fixed and boiler ran ok for a while. The engineer said they would fit new electrodes each time it was serviced as this was obviously going to give problems otherwise. Even so sometimes the boiler igniting is so violent that it shakes the house, and it still locks out even with new electrodes. There have been a number of other problems such as a burnt out PCB, condensate trap blockage and worn seals around the internal access to the heat exchanger which seemed to take a long time for the engineers to discover. Whilst I have many complaints about this boiler I would say that it does need to be meticulously serviced and parts checked and replaced if they are worn. The combustion door seal should be checked as part of the service and replaced when worn. This was not done and the boiler broke down. I also keep a stock of electrodes and replace them more frequently than once a year. Modern boilers may be more efficient but the cost to keep them running reliably is very high and this is not highlighted by any of the manufacturers. My previous boiler was 17years old before it needed replacing but I cant see this one lasting more than 10 years if I dont get fed up with it before then.