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heating
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how do i drain my central heating systerm
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For more on marking an answer as the "Best Answer", please visit our FAQ.Well, turn off the boiler and the water supply to the central heating header tank up in the loft (usually). There is usually a drain **** at a low point of the central heating pipe system which you attach a hosepipe to then undo the nut. Allow the water to drain outside. After a while (once the header tank has emptied and the top radiators are emptying) undo the bleeder valve in the upstairs radiator to allow them to drain easier. Repeat for the downstairs rads. Remember to do them up when you refill the system.