• Have everyone leave the building right away. Leave doors open as you go. Shut down heating and cooking equipment.
• Use a neighbor's telephone to report the Carbon Monoxide (CO alarm warning, following the instructions you received from the fire department when you bought the alarm.
• Be on the lookout for any symptoms of CO poisoning.
• Call a qualified technician to inspect all equipment.

Get immediate medical attention if anyone shows signs of CO poisoning.