CARBON DIOXIDE (CO2) SENSORS

What Are Carbon Dioxide (CO2) Switches?

A CO2 sensor in HVAC systems is a device that gauges the concentration of carbon dioxide (CO2) in the air. Its primary purpose is to assess indoor air quality (IAQ) by indicating how effectively a space is ventilated and adjusting ventilation rates based on occupancy levels. This approach enhances energy efficiency by introducing fresh air only when necessary.

By measuring the CO2 levels, which tend to rise when people are present, the sensor instructs the HVAC system to modify ventilation to ensure optimal air quality.

Elevated CO2 levels are linked to inadequate IAQ, which can result in discomforting symptoms such as headaches and fatigue.

CO2 sensors facilitate demand-controlled ventilation, allowing the system to bring in fresh air only when required, thereby minimizing energy usage.