What is the acceptable level of carbon monoxide (CO) for occupants?

The acceptable level of carbon monoxide (CO) for occupants is considered to be below 35 parts per million (PPM). This threshold is established based on health guidelines which indicate that exposure to CO at levels below 35 PPM is generally safe for most individuals. Continuous exposure to concentrations greater than this level can lead to symptoms such as headaches, dizziness, and in severe cases, can result in carbon monoxide poisoning.

Understanding safety standards for air quality is crucial, especially in environments where people spend significant amounts of time, such as homes or workplaces. Levels exceeding 35 PPM would necessitate immediate action to ventilate the area or address the source of the CO to ensure the safety and health of the occupants. Thus, the recognition of 35 PPM as a critical threshold underscores the importance of monitoring and managing carbon monoxide levels in order to safeguard public health.