What should I do when my carbon monoxide alarm sounds?

Don’t ignore the alarm! Remember, you can neither see nor smell carbon monoxide, and you may not be experiencing any symptoms. Your carbon monoxide alarm is intended to warn household members before they experience symptoms.
 
If anyone is experiencing symptoms of carbon monoxide poisoning, get everyone outside into fresh air and call 9-1-1.

If no one has symptoms, open your windows and doors to ventilate your home and contact a qualified service technician to come and inspect all of your potential carbon monoxide producing sources.
 
To reduce the chance of ever having a problem with carbon monoxide in your home, have fuel-burning heating and cooking equipment, and chimneys inspected by a professional every year before cold weather sets in.