Switch your heating off as you will be unable to bleed the radiator with the heating still on due to the fact it may be at a temperature too hot for you to handle.

​

With a radiator key or screwdriver, find the bleed valve at the top of the radiator. After attaching the key / slotting the screwdriver into the square / groove located in the valves centre, turn it anticlockwise. The noise of trapped air escaping should be heard in the form of a hissing sound. When the air has escaped the hissing sound should stop and a small amount water should start to escape from valve. When this happens quickly retighten the valve (turning it clockwise) and try and let as little water escape as possible. Using your cloth, you should be able to catch any of the water that comes off.

​

You can now switch on your central heating system again.

​

By looking at the pressure gauge on your boiler check the pressure (it should be between 1bar - 1.5bar). After bleeding your radiators a common thing to happen is your pressure drops.

 

If this is the case and the pressure is too low, you’ll need to top it up. Using the filling loop (the lever or tap on your boiler). See guide below how to top up pressure

​

How to top up pressure on boiler

​

The radiator will be fixed if the heat is evenly spread across the radiator.

​