May 26, 2023

Where to Put CO₂ Sensors?

Optimal CO2 Sensor Placement: A Guide for Building Managers and Property Owners

In our commitment to providing building managers, property owners, and facility operators with the latest information on HVAC technologies and strategies that improve building performance, this article will address the optimal placement of CO2 sensors. Proper CO2 sensor placement is crucial in maintaining indoor air quality in high-occupancy spaces such as shopping centers, universities, hotels, and large commercial buildings. We will discuss the factors to consider when positioning CO2 sensors and offer practical tips for effective sensor placement.

Factors to Consider for CO2 Sensor Placement:

  1. Occupancy: Place CO2 sensors in areas with high occupancy rates, as these locations often experience the most significant fluctuations in CO2 levels.
  2. Airflow Patterns: To obtain accurate readings, consider the natural airflow patterns within the space and avoid placing sensors near air vents, windows, or doors.
  3. Mounting Height: CO2 is heavier than air and tends to accumulate near the floor. Mount sensors at a height that corresponds to the occupants' breathing zone, usually between 3 to 6 feet (0.9 to 1.8 meters) above the floor.
  4. Room Size and Configuration: For large spaces or those with complex layouts, multiple sensors may be necessary to provide comprehensive coverage and accurate readings.

Practical Tips for Effective CO2 Sensor Placement:

  1. In Classrooms or Conference Rooms: Place sensors near the center of the room, away from air vents and windows, to capture accurate CO2 levels corresponding to the occupants' breathing zone.
  2. In Offices: Position sensors in open-plan office spaces or near high-occupancy areas, such as workstations, to monitor CO2 levels effectively.
  3. In Retail Spaces: Install sensors near entrances, exits, and checkout areas to measure CO2 levels in high-traffic zones.
  4. In Gymnasiums or Fitness Centers: Mount sensors near exercise equipment or group fitness areas, where higher occupancy and increased respiration rates contribute to elevated CO2 levels.
  5. In Restaurants: Locate sensors in dining areas, kitchens, and other high-occupancy zones to monitor CO2 levels and maintain optimal indoor air quality.

Proper CO2 sensor placement is essential for effectively maintaining indoor air quality in various settings, including shopping centers, universities, hotels, and large commercial buildings. By considering factors such as occupancy, airflow patterns, mounting height, and room size, building managers, property owners, and facility operators can ensure accurate CO2 readings and provide a healthy and comfortable environment for occupants. Staying informed about optimal CO2 sensor placement is critical for enhancing building performance and ensuring the satisfaction of your occupants.

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