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

Read the transcript for the 'what to do if your Carbon Monoxide alarm sounds' video (PDF 104kb)

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.