Most domestic radiators will need bleeding at some point and it is important for the efficiency of your central heating boiler that it is done properly. Luckily it is a job that you can normally do yourself providing you follow a few basic rules.
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When to bleed a radiator
It is quite easy to tell when a radiator needs bleeding as the top section will remain a lot cooler than the bottom section, or in severe cases the entire radiator will stay cold when the heating system is turned on. This happens because trapped air displaces the hot water that normally heats the radiator and it is this air that needs to be released during the bleeding process. Once the air is released, the hot water can flow freely again.
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