My radiators don’t seem to be working as well as they used to. What should I do?

Bleeding a radiator

• Turn off the central heating.
• Insert a radiator bleed key into the bleed vent.
• Hold a cloth underneath the bleed vent to catch any excess water.
• Undo the bleed vent in an anti-clockwise direction and to a maximum of one turn. You should hear a hissing noise which is the air escaping.
• As soon as water starts to appear, turn off the bleed vent by turning it in a clockwise direction – do not over-tighten.
• Turn on the central heating and recheck the radiator.