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House hard to heat?
Suffer from Mould, Mildew or bad condensation?
Suffer from Rust, Corrosion?
for all your DIY needs!
Hints and Tips
Bleeding A Radiator
One of the most common problems with a wet central heating system is a radiator that is not as warm at the top as it is elsewhere.

This is usually caused by a build-up of air in the radiator.

The reason for this is either air dissolved in the water or corrosion within the system which produces gas that collects in the radiators.

The solution is to "bleed" the radiators by opening the bleed valve with a special key.

vent key

Bleeding a radiator

Opening the air-bleed valve at the top of the radiator will allow the air to escape.

Use a special radiator key and be ready to catch any escaping water.

Close the valve as soon as water starts to escape.

As you do this, the system will be topped up again from the feed and expansion tank.

The radiator should now heat evenly.
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