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  1. C

    Low gas pressure at boiler

    So you're saying that the boiler is approx 20m from the meter? What size boiler is existing? If the gas pressure is low at the boiler, it indicates undersized pipework.... sounds like your guy is suggesting the right thing, especially if u are increasing the boiler size.
  2. C

    Combi boiler delivers hot water then luke warm

    That would be my first guess too.... however, if the rads get hot when HW is run, could be diverter? Or even both, but doubtful.
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