Indoor Air Quality in Schools: What Should Administrators Be Monitoring?
Learn which indoor environmental conditions matter in schools, how monitoring supports facility management, and what administrators should consider when selecting sensors.
OMNI Sensors TeamStudents and staff spend a significant portion of their day inside school buildings. Classrooms, cafeterias, libraries, gyms, and offices all depend on building systems that help maintain comfortable and appropriate indoor conditions.
When something goes wrong, the symptoms may not be immediately obvious. A room may feel stuffy, humidity may remain elevated, or unusual odors may appear without an obvious source.
Indoor air quality monitoring gives facility teams another source of information when evaluating building conditions.
Why indoor air quality matters
Indoor air quality, often abbreviated as IAQ, refers to the conditions of the air inside a building.
Potential concerns include inadequate ventilation, excessive moisture, airborne particles, chemical emissions, and contaminants introduced by building materials, cleaning products, furnishings, or everyday activities.
The U.S. Environmental Protection Agency identifies ventilation, pollutant sources, moisture management, and building maintenance as important parts of a school IAQ program.
Monitoring does not replace proper building maintenance or professional investigation. It can help administrators identify patterns and determine when further attention may be appropriate.
Five environmental factors schools should understand
- Volatile organic compounds (VOCs)
VOCs are a broad group of chemicals that can be released by products and materials such as paints, adhesives, cleaning supplies, furnishings, and other sources. A VOC reading can provide an indication of changing environmental conditions. However, a general VOC sensor does not necessarily identify a specific chemical or determine whether a particular exposure is harmful.
- Smoke-related indicators
Smoke can introduce particles and chemical compounds into indoor environments. Monitoring smoke-related conditions may help facility teams identify unusual events and investigate potential sources. A monitoring sensor should not be confused with a listed or certified smoke alarm required by applicable building or fire codes.
- Relative humidity
Humidity is an important part of building management. Persistently elevated moisture conditions can contribute to mold growth and building-material damage when combined with suitable temperatures and moisture sources. Monitoring humidity trends can help facility teams identify areas that may need inspection or improved moisture control.
- Temperature
Temperature affects comfort and can help facilities teams identify HVAC performance issues. When reviewed alongside humidity and other environmental information, temperature trends can provide useful context about how a room or building is operating.
- Carbon dioxide and ventilation indicators
Carbon dioxide is often used as an indirect indicator of occupancy-related ventilation conditions. Elevated CO2 readings can suggest that ventilation should be evaluated, but CO2 is not a direct measurement of every indoor pollutant and should not be interpreted as a complete measure of air quality. Schools should follow appropriate engineering guidance when evaluating ventilation performance.
Why continuous monitoring can be useful
Traditional building inspections provide important information, but they are snapshots in time.
Connected monitoring systems can provide ongoing data that helps facilities personnel identify changes, compare locations, and investigate patterns.
For example, a school may notice that certain rooms consistently experience elevated humidity during particular periods. That information can help guide an inspection of ventilation, plumbing, moisture intrusion, or other possible causes.
Monitoring is most valuable when someone is responsible for reviewing the information and taking appropriate action.
Where should schools place environmental sensors?
Placement affects the usefulness of collected information.
Schools should follow manufacturer installation instructions and consider room size and layout, typical occupancy, airflow patterns, HVAC supply and return locations, windows and exterior doors, nearby sources of contaminants, and access for maintenance and inspection.
The EPA's school IAQ guidance recommends considering temperature, relative humidity, air movement, and airflow when evaluating indoor conditions. It also discusses the use of CO2 monitors as one tool for understanding ventilation.
How OMNI Sensors helps organizations monitor their facilities
OMNI Sensors develops connected environmental monitoring technology designed to provide visibility into changing indoor conditions.
The Sentinel platform monitors VOCs, smoke-related environmental indicators, humidity, light, and sound.
The system is designed to provide organizations with connected environmental information through its monitoring platform and integration capabilities.
Sentinel Plus adds panic-alert and asset-tracking features for organizations that need additional operational functionality.
OMNI monitoring is intended to complement building-management practices. It does not replace HVAC inspections, professional IAQ assessments, laboratory testing, or certified fire and life-safety equipment.
Frequently asked questions
What is the most important thing to monitor in a classroom?
There is no single measurement that answers every IAQ question. Temperature, relative humidity, ventilation conditions, and potential pollutant sources should all be considered.
Can an environmental sensor detect mold?
A humidity sensor does not directly identify mold. It can help identify moisture conditions that may warrant further inspection.
Does a VOC reading identify a specific chemical?
Not necessarily. General VOC monitoring can indicate changes in overall VOC levels, but identifying individual compounds may require specialized equipment and testing.
Can sensors replace an HVAC inspection?
No. Sensors can provide useful information, but qualified professionals should evaluate ventilation systems and investigate suspected building problems.
How often should schools review monitoring data?
That depends on the building, the monitored conditions, and the school's response procedures. Monitoring should have a defined review and escalation process.
Final thoughts
A healthier building starts with understanding the conditions inside it.
Connected environmental monitoring can help school administrators and facility managers identify patterns, investigate concerns, and make better-informed decisions about their buildings.
Learn more about environmental monitoring at OMNISensors.ai.
Related
Sentinel & Sentinel Plus · OMNI Cloud · K-12 schools · Contact OMNI
Sources & further reading
EPA Reference Guide for Indoor Air Quality in Schools: https://www.epa.gov/iaq-schools/reference-guide-indoor-air-quality-schools
EPA school IAQ resources: https://www.epa.gov/iaq-schools
OSHA Indoor Air Quality: https://www.osha.gov/indoor-air-quality