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    Loft Header Tank


    Hi, My small loft header tank in the loft is overflowing when the hot water/heating is switched on. It’s fine when the heating/water are off, but starts up again when it comes on again. It started with a few drips a few weeks ago to a slow flow now, which lasts for about 10-15 minutes when the heating/water initially comes on and then stops dripping again. Any ideas?

    Asked by Justin on 8th Apr 2021
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    "Hi there, is it an old system and have you had a new pump fitted? The pump could be set too high or fitted wrong."

    Answered on 12th Apr 2021 - Member since Sep 2019 - report

    "Hello, check central heating pump if in circulation, close it. Looks like to be blockage in the system or faulty pump."

    Answered on 12th Apr 2021 - Member since Mar 2018 - report
    Belfast Heating Group

    "Hello it is quite possible that this is caused due too known as pump over this occurs when then circulation pump speed is set t maximum speed if it turned down to 1 or 2 this should stop the pump over occurring"

    Answered on 13th Apr 2021 - Member since Mar 2021 - report
    Tim Schuetz Dimestic Plumbing & Heating Ltd

    "This is called “pumping over” usually means vent pipe needs to be higher, increased in size or you have a blockage."

    Answered on 13th Apr 2021 - Member since Mar 2021 - report

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