What should I do when my carbon monoxide detector goes off?

First and foremost, stay calm. As mentioned previously most situations resulting in activation of a carbon monoxide detector are not life threatening and do not require calling 911. To determine the need to call 911, ask the following question of everyone in the household:

  • "Does anyone feel ill? Is anyone experiencing the ‘flu-like’ symptoms of headache, nausea or dizziness?"

If the answer to the above by anyone in the household is true, evacuate the household to a safe location and have someone call 911. Failure to evacuate immediately may result in prolonged exposure and worsening effects from possible carbon monoxide gas. The best initial treatment for carbon monoxide gas exposure is fresh air.

If the answer to the above by everyone in the household is no, the likelihood of a serious exposure is greatly diminished and one probably does not need to call 911. Instead, turn off any gas burning appliances or equipment, ventilate the area and attempt to reset the alarm. If the alarm will not reset or resounds, call a qualified heating and ventilating service contractor to inspect your system for possible problems. If at any time during this process someone begins to feel ill with the symptoms described above evacuate the household to a safe location and have someone call 911.

Show All Answers

1. Why is carbon monoxide so dangerous?
2. What is carbon monoxide (CO) and why do I need a carbon monoxide detector?
3. What are the medical effects of carbon monoxide and how do I recognize them?
4. How many carbon monoxide detectors should I have and where should I place them?
5. What should I do when my carbon monoxide detector goes off?