How do I bleed a radiator?

HEADING into autumn it'll be time to fire up the radiators in our homes once more.

But how do you bleed a radiator? Here's all you need to know…

How do I bleed a radiator? 

  1. Turn off your heating and wait until it is cool enough to touch.
  2. Use your radiator key to turn the valve at the top of the radiator. Turn in an anticlockwise direction until you hear a hissing sound.
  3. The hissing noise is the trapped air escaping. Use a cloth or rag to catch any water that comes out.
  4. Retighten the valve when the hissing stops.
  5. Turn your central heating back on.
  6. Look at the gauge on your boiler to check the pressure. Make sure that it doesn’t drop.
  7. Check that your radiator is now heating up properly and the heat is evenly spread through the radiator.

What are radiator valve caps? 

A radiator valve cap is used to control the flow of water to your radiator.

The changing of the flow can control the temperature of the room.

It can also turn the radiator off it its in a room you don’t use.

Why do I need to bleed my radiator?  

Radiators need to be bled when they have air trapped inside them. 

This is because the air stops warm water circulating around your radiator. 

It's recommended that you bleed your radiators once a year – even if they are working properly.

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