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Gas. Stay safe, stay warm

The danger of a faulty gas appliance

Most gas appliances need a chimney or flue so that gas fumes don't mix with the air you breath.

Gas appliances need air to burn safely. With enough air, they produce carbon dioxide and water in safe amounts, which are normally taken away by a chimney or flue.

But a gas appliance will produce carbon monoxide if there is too little air or the chimney or flue is blocked.

Carbon monoxide gas is highly poisonous. It is difficult to recognise because it has no colour, smell or taste.

Danger signs

The danger signs are stains, soot or discolouring around the top of a gas fire or at the top of a gas water heater or boiler. A conventional gas appliance should have a normal blue flame – not yellow or orange.

The symptoms of carbon monoxide poisoning are similar to those caused by colds or flu. You may also suffer from headaches, chest pains, muscular weakness, sickness, diarrhoea, stomach pains, sudden dizziness when standing up, or general lethargy after using a gas appliance . . .

Stop using it. Turn it off. Report it to us immediately. Go to your doctor.

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