How to effectively bleed a radiator

May 11, 2020 4:29 pm


Our radiators are a key component in our home heating systems and it is important that we keep them well maintained and looked after. If your radiators are no longer performing as they should do and you have exhausted all maintenance options it might be time for you to look at an Aluminium Radiators UK company to source new ones.

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One way to keep your radiator running smoothly is to regularly bleed it. It can also help with the problem of a radiator that is warm to touch at the bottom but cold at the top. Here is our step by step guide to help you through the process.

Locate your radiator bleed key or a flat head screwdriver and a cloth.

  1. Make sure that you turn off your central heating system and check that your radiators are cool before you start to bleed your radiators. It is also important that you work on the radiators inĀ  your downstairs space first and work with the primary radiator on your system if you know which one this is.

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  1. Place the bleed key or screwdriver in the bleed valve that will be located at one end of the radiator at the top. You need to gently turn this anti-clockwise in order to open up the valve. You should only turn this about half a turn.
  2. Hold the cloth underneath the bleed key or screwdriver and you will hear the trapped air escaping from the radiator as it makes a hissing noise. As soon as you see water trickling into the cloth you need to turn the bleed key or screwdriver in a clockwise motion to close the valve up again.