Bleeding Radiators: Step-by-Step for Homeowners
18 August 2026 | Leyton Boilers
Turn off the heating, use a radiator key on the bleed valve, and catch drips with a cloth. Close the valve when water appears without bubbles.
Recheck boiler pressure afterwards and top up if needed. If radiators need bleeding frequently, there may be a system leak or corrosion issue.
Contact us if bleeding does not resolve cold spots — sludge or balancing issues may be the cause.
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Leyton Boilers provides Gas Safe registered boiler servicing, repairs, and installations across London.
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