Published by Steph Ellis on 23rd March 2023

How to bleed a radiator

When air gets trapped inside your radiator, it can stop the heat from circulating properly. To release the air, you would complete a process called ‘bleeding’ your radiator.

Please follow the below steps:

Switch off the heating
Locate radiator key, insert into valve at the top of the radiator & turn
The trapped air will begin to escape & make a hissing sound
Once hissing stops, use your radiator key to tighten the valve
Switch heating back on
Check radiator to see if it has made a difference

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