What level of carbon monoxide is considered a safe level in your home in ppm?

What CO level is dangerous to your health?

The health effects of CO depend on the level of CO and length of exposure, as well as each individual's health condition. The concentration of CO is measured in parts per million (ppm).

* Health effects from exposure to CO levels of approximately 1 to 70 ppm are uncertain, but most people will not experience any symptoms. Some heart patients might experience an increase in chest pain.

* When CO levels increase and remain above 70 ppm, symptoms - such as headache, fatigue, nausea -may become more noticeable.

* If CO levels increase above 150 to 200 ppm, disorientation, unconsciousness, and death are possible.