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Recent content by jasperfromcz

  1. J

    Vaillant Unistor slow reheat

    Hi All, I have a Vaillant Atmotop VU 200/2-5 and Unistor VIH Q 120 (7yo). The heating works fine and has recently been cleaned. The water however takes ages to reheat and during shower the water temp drops under 25 deg. I assume the heat exchanger has limestone on it but no inspection hatch to...
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