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Please forgive the dumb question, but how does one go about powerflushing a system? I have read it a few times on here in my quest to sort my system out, but don't know what it is. Is it a job an amateur can do? thanks Oh I have a clowworm 30ci combi boiler if that makes a difference :)...

I have searched and read about this, but can't find the same thing that I am experiencing. :cry: Our system is about 2 years old, and uses a 30ci combi, but lately we have been experiencing some sort of pressure issue. When the heating is on, it is dripping water out of the overflow...