How To Bleed A Radiator

This webpage describes how to ‘bleed a radiator’.

Scroll down to see images and instructions on how to bleed a radiator.

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· Turn the central heating off.

· Obtain a radiator key; your radiator key may be different to the radiator key in the image below.

· Insert the radiator key into the bleed valve at the top of the radiator.

· Have a rag ready to catch the small amounts of water that will come out of the radiator with the trapped air.

· Turn the key in small amounts, a 1/4 or 1/2 turn at a time.

· Turn the key, usually anticlockwise, to release the trapped air out of the radiator. As soon as water starts to come out turn the key in the opposite direction to close the bleed valve.

· Turn the central heating back on; check for leaks at the radiator.

Links

Central Heating Problems – Advice & Help – main Judge Electrical central heating help and advice page.

Central Heating Troubleshooting Tips – series of short tips to help solve central heating problems.

Hot Radiators Upstairs But Not Downstairs – advice & help to solve this problem.

Central Heating Noises – what can cause different types of noises.

Banging Noise – possible explanations.

Humming Noise – possible explanations.

Creaking Noise – possible explanation.

Thermostats – what a thermostat is, what central heating system thermostats are used for; shows what central heating thermostats look like.

Central Heating Boilers – Information about central heating boilers.

Central Heating Boiler Problems – Advice & Help – advice and help on solving common central heating boiler problems.

Central Heating Timers Problems – Advice & Help – advice and help on solving common central heating timer problems.

Electrical RCD – Find, Reset, Investigate A Constantly Tripping RCD – is the central heating RCD tripping? How to find the RCD domestic unit, reset an RCD and how to investigate constantly tripping RCDs.

All Radiators Downstairs Cold – possible explanations.

Single Radiator Not Working – possible explanations.