Air quality, made visible
Know when your air needs attention.
See CO₂ and air quality trends in homes, schools and offices. Choose monitors engineered in Québec, Canada, for portable checks, connected trends or building-wide monitoring.
Choose by task
Which monitor fits your space?
Check a room
Carry a local CO₂ monitor between rooms and review readings on its display.
Explore Model DFollow trends remotely
Track CO₂, temperature and humidity over time with a connected sensor and Cloud Portal access.
Explore Model CPlan a building
Compare connected air quality models and plan monitoring across classrooms or offices.
Plan your setupNeed a different sensor mix? Compare every model or use the product finder.
Explore the monitors
Model C – Smart CO₂ Sensor
CO₂, temperature, humidity monitoring with cloud portal.
starting at $209.00 CAD
Model F – Portable CO₂ Sensor
Portable CO₂ sensor with color LCD display and data logging for on-the-go monitoring.
Model D – Battery-Powered CO₂ Sensor
Reliable CO₂ sensor with integrated battery and local data logging. Ideal for IAQ spot checks, classrooms, offices, and inspections without Wi-Fi.
starting at $199.00 CAD
Model E-Lite: Complete Air Quality Sensor
CO2, PM, VOC, temperature, humidity, barometric pressure monitoring.
starting at $285.00 CAD
Model O: Advanced Multi-Sensor Monitor (2026 Edition)
PoE-ready air quality monitoring with CO2, PM, VOC, NOx, temperature, humidity, and barometric pressure.
starting at $289.00 CAD
Model X2: Enhanced Exterior Sensor
Advanced outdoor monitoring with PM, VOC, temperature, and humidity sensors.
starting at $249.00 CAD
Understand your readings
Turn air quality data into useful decisions
CO₂ helps reveal ventilation patterns; particles and VOC trends show other changes in your space. Learn what each reading means and how to use it.
Buying Guides and Popular Support Topics
Use the pages below to compare models, answer common pre-purchase questions, and pick the right air quality monitor faster.
Compare Air Quality Monitors
See which VisiblAir model fits portable checks, classrooms, offices, PoE installations, or outdoor monitoring.
Compare ModelsCO2 Sensor Calibration
Learn when to check calibration, what outdoor readings to expect, and when recalibration is needed.
Read the GuideVOC and TVOC Meaning
Understand what the VOC index means on connected VisiblAir sensors and how to react when values rise.
See VOC GuidanceOutdoor Sensor Maintenance
Keep outdoor PM and weather-exposed sensors accurate with quick checks for dust, insects, and airflow blockages.
Maintenance TipsVisiblAir Cloud Portal
Take control of your indoor air quality with the VisiblAir Cloud Portal—your real-time dashboard for air quality insights!
- ✅ Live Data & History: Monitor CO₂, PM, VOCs, temperature, humidity, and more from anywhere.
- ✅ Graph Zoom & Pan: Dive into the details with smooth zooming and panning on historical data.
- ✅ Multi-Device Support: Track multiple sensors across different locations—all in one place.
- ✅ Smart Alerts: Get notified when air quality dips, so you can take action fast.
- ✅ Open & Transparent: Export your data anytime—because you own your air quality information.
Explore portal screens, compatible models and pricing
About VisiblAir
At Visiblair, we make air quality monitoring accessible, reliable, and insightful. Here's what sets us apart:
- Open and transparent data: Full access to your readings with no locked analytics.
- Built for everyday use: Models designed for homes, schools, workplaces, and field spot checks.
- Right to repair: User-serviceable parts and 3D-printable case files where applicable.
- Flexible connectivity: Wi-Fi, Ethernet, USB-C, and PoE options across the lineup.
- Actionable monitoring: Precise sensors for CO2, particulate matter, VOC, humidity, and temperature.
For more details about our story, click here.
Frequently Asked Air Quality Monitor Questions
These are the questions people ask most often before buying a CO2 monitor or connected indoor air quality sensor.
Plan monitoring for your space
Offices and commercial buildings
Compare portable surveys, connected dashboards, alerts, Ethernet and PoE for one room or a multi-floor deployment.
Plan office monitoringSchools and classrooms
Choose between offline classroom studies and connected multi-room monitoring, with practical placement and privacy guidance.
Plan school monitoringContact Us
You have questions, comments or suggestions, reach out to us via email or social media.
Email: info@visiblair.com
VisiblAir · 44 rue du Parc-Woodland · Léry, Québec J6N 1E3 · Canada