Carbon monoxide alarm sounding: do this now
- Open the windows and doors, switch off any gas appliance you can reach safely, and get everyone out of the property into fresh air.
- Call the NI Gas Emergency Service on 0800 002 001 from outside.
- If anyone feels dizzy, sick or has a headache, call 999.
If anyone is in danger, call 999.
Then tell CPS
No code needed in an emergency. We will see this straight away and ring you.