What to do if your Carbon Monoxide alarm sounds

Watch our short video for helpful advice on what to do if your Carbon Monoxide alarm sounds

Key Points


  • If your Carbon Monoxide alarm sounds, you’ll need to switch your gas off.
  • The gas control valve is located at your gas meter.
  • To turn the gas off, turn the lever to the right-hand side so the lever sits horizontally.
  • You’ll need to call Southern Gas Networks on 0800 111 999.
  • You should then open up doors and windows and leave the property immediately until they arrive.
  • They will ensure that the property is safe. If further repair work needs to be completed, you’ll need to contact us on 0800 652 0898 and we’ll send out a gas engineer to make your home safe again.