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  1. S

    heatrae sadia megaflow

    can anyone recommend a better unvented system? we need pressure because it is situated at the bottom of the house with a lot of bathrooms to supply. a different manufacturer? it is quite old, was here when we moved into the house and I keep reading that they are not very good.
  2. S

    heatrae sadia megaflow

    thanks so much for all your advice. I have regenerated the airgap and it makes no difference. it is the first thing the plumbers try as well. the mopping appears to be due to the quantity of water coming through, it splashes around the tundish and spills over. I know what will happen, the...
  3. S

    heatrae sadia megaflow

    I have a megaflow system which is giving so much hassle. I have had two plumbers and a further recommended one by Heatrae Sadia. It has been serviced back in february. every four months the overflow runs in through the tundish. each plumber has replaced the pressure valve, and at more or...
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