Bleeding your radiator
How to tell if your radiator needs bleeding:
Have you noticed you aren’t getting as much heat from your radiators as normal? To touch does your radiator feel warm at the bottom and gradually gets cold towards the top? There is a simple explanation for this, overtime air has risen to the top of the radiator and is trapped preventing hot water from moving through. Other indications might be that the pressure on your boiler is above that of the recommended pressure (1.0-1.5) or that your radiator is making a gurgling noise.
5 steps to bleeding your radiator:
1. Turn your heating off and leave it time to cool
2. Put a towel under the first radiator that needs attention to catch any leaked water
3. Insert your bleed key into the bleed point of the radiator and turn anti-clockwise until the valve is slightly open (but not removed), it should make a hissing noise.
4. Once the air has escaped and the hissing noise has ceased, turn the key clockwise to close the valve.
5. Check the boiler pressure to check its not too low and turn heating back on.