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Where is the bleed valve on a radiator?

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The bleed valve can usually be found at the top of a radiator, at one of the sides.

On older radiators, it often has the appearance of a round hole with a square inside, while on more modern designs it looks more like a nut with a screw in the centre.

For further help with regards to bleeding radiators, visit our Advice Centre guide on how to bleed a radiator. Or, for inspiration regarding the best radiator models to consider for your home, explore our comprehensive radiator buying guide.