We are looking to replace our existing Worcester combi boiler (about 10 years old) with a newer condenser model.
Two of the quotes that we received mentioned that the diameter of our gas pipework may not be sufficient.
So my question is: is this correct? Our flat is fairly small (5 radiators) and the existing combi boiler works fine with this pipework, leading me to think that this may be a bit of a con. It wasn't mentioned by any of the other plumbers who quoted us, either.
It would be a royal pain to change the pipework, as it is a listed building, and the pipework itself can be no more than 12 years old, as this was when the building was converted to residential dwellings.
Thanks,
JP
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