Silent but Deadly CO

It is important to know that while carbon monoxide is and does sound scary, you can prevent it.

Carbon monoxide

Carbon monoxide (CO) is a highly toxic gas. If a gas appliance is not fitted or serviced in the right way, it can produce carbon monoxide. And when it does, you can't see, taste or smell it. It can kill quickly, with no warning.
 
The process that creates carbon monoxide is incomplete burning of gas and Liquefied Petroleum Gas (LPG). It happens with badly functioning gas appliances, but it can also occur if flues, chimneys or vents are blocked. Oil and solid fuels such as coal, wood, petrol and oil can also produce carbon monoxide.

Carbon monoxide poisoning

Carbon monoxide will poison you when you breathe in even small amounts of the gas. It gets into your blood stream and prevents your red blood cells from carrying oxygen. Without oxygen, your body tissue and cells die.

Levels of carbon monoxide that do not kill can cause long term damage to your health. If you breathe it in over time the long-term effects on your health include paralysis and brain damage.

Carbon monoxide symptoms are similar to flu, food poisoning, viral infections and tiredness. That's why it's quite common to mistake this very dangerous poisoning for something else. Being aware of the symptoms could save your life.

The six main signs and symptoms of carbon monoxide poisoning are:

  1. headaches
  2. dizziness
  3. nausea
  4. breathlessness
  5. collapse
  6. loss of consciousness

Other signs that could point to carbon monoxide poisoning:

  • your symptoms only occur when you are at home
  • your symptoms disappear or get better when you leave home and come back when you return
  • others in your household are experiencing symptoms (including your pets) and they appear at a similar time.

What should I do if I experience any symptoms?

If you experience carbon monoxide symptoms:

  • Get fresh air immediately. Open doors and windows, turn off gas appliances and leave the house.
  • See your doctor immediately or go to hospital - let them know that you suspect carbon monoxide poisoning. They can do a blood or breath test to check.
  • If you think there is immediate danger, call the Gas Emergency Helpline.
  • Get a Gas Safe registered engineer to inspect your gas appliances and flues to see if there is a dangerous problem.

You may not see obvious signs that tell you your gas appliance isn't working properly. Only a gas safety check and a service will pick it up. Mark the date on your calendar for your annual gas safety check.

Spotting signs of carbon monoxide

Your home may show signs of carbon monoxide. Any one of the following signs could point to carbon monoxide:

  • the flame on your cooker is lazy and a yellow or orange colour
  • soot or yellow or brown staining around or on appliances
  • pilot lights that frequently blow out
  • too much condensation on windows

Fit a carbon monoxide alarm

Fit a carbon monoxide alarm in your home that will make a sound to alert you if you're in danger.

Gas Safe Charity recommends audible carbon monoxide alarms marked with British Standard EN 50291. It should also have a British or European approval mark, such as a Kitemark.

Carbon monoxide alarms usually have a battery life of up to five years, don't forget to check they're still working. Fit an alarm in each room with a gas appliance.

Only use an alarm that makes a sound so that it will wake you up if you're asleep.

Carbon monoxide alarms are available from DIY retailers and cost around £20. You can usually find them in the home security section.

A carbon monoxide alarm is only your second line of defence. You should always get your appliances fitted and serviced properly by a Gas Safe registered engineer.