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I believe there was a later model which allowed the heat exchanger to be replaced but as I understand it, on this type of boiler, the heat exchanger is within the tank holding 155 litres of water supplying the rads so the baby literally goes out with the bathwater! The no fix no fee for...

Thanks for the info. Descaling has been tried but unfortunately made no difference. I understand that the only way to get a decent flow of hot water is to replace the the whole boileer which I find amazing. Like having a car with a broken piston ring and having to replace the whole engine. :?

I have a 4 bedroom house built in 1999 which has a scaled up Powermax 155 boiler which needs replacing. Besides the family bathroom there is an ensuite and 12 radiators throughout the rest of the house. How do I know what would be a suitable replacement boiler? I am being quoted for a...

I have a Powermax 155 which is around 6 or 7 years old - the house was built in 1999. The hot water flow is very poor and when it was serviced last year an attempt was made to descale it with chemicals. This was unsuccessful and the blender valve was removed. I now have very hot water but still...