"over the years iv fitted more than 30 of these,iv one at my house and it has given me no problems as with any wet heating make sure the radiators and pipes have been flushed out ,use a cleanser and inhibitor,fit a unit to trap magnetic and particle debris and keep the correct concentration of inhibitor every 2 yrs and not much can go wrong.Most important have it fitted by an experienced and qualified fitter."
"my 16 yr old Biasi broke so decided to change it for a new model. After researching the technical data on this combi I decided to buy it as it was an almost direct replacement for the old 424s. Apart from the gas pipe everything lined up including the flue which had to be moved down and over slightly. The only quib was the expansion tank was off centre so I had to realight it but in doing so loosened off the pipe which then leaked when I had fitted the boiler, so it had to all come off again. Not pleased but once installed its a good combi for £550!"