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  • Just bought a house with a vented hot water tank. The water tank in the loft (I assume there's one up there, I haven't actually seen it myself) seems to overflow sometimes, just for a short while. Is this normal, and of not what could be the cause? I've always had combis before?

  • Get an engineer to check it, could be pumping over could be the ballcocks not shutting off. Best get it checked.

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