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radiators warm at the top but cold on the bottom

Postby tfella » Wed Nov 26, 2008 9:02 pm

My radiators are cold at the bottom yet warm at the top. This problem is usually the opposite way round so do they just need bleeding?
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Postby AdamsHeating » Thu Nov 27, 2008 11:03 pm

If you bleed and they are full you probably have a blockage/sludge build up. Might need a cleanser running through it or power flushing.
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Postby Loffa » Thu Nov 27, 2008 11:06 pm

If its an old system it probably needs a powerflush or at least taking the rads off and flushing through individually. They are more than likely sludged up.
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Postby Steve the gas » Fri Nov 28, 2008 5:39 am

Hi Fella,

Cold at top = air, therefore bleed.
Cold at bottom = sludge or circulation problem, therefore powerflush or diy drain down flushout several times then add inhibitor.

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