CO2 Monitors and Real-Time Air Quality Sensors in Canada
Québec-engineered indoor air quality sensors for CO2, PM2.5, VOC, temperature, humidity, and building-scale monitoring in homes, schools, offices, and commercial spaces.
Health Protection
Monitor PM1.0, PM2.5, PM10, VOCs & CO2
24/7 Monitoring
Real-time data with cloud connectivity
Find the Right CO2 Monitor for Your Space
VisiblAir sensors are built for quick checks, continuous real-time monitoring, and multi-room deployments where ventilation, comfort, and particle levels need to be visible.
CO2 Monitors in Canada
Choose Canadian-designed CO2 sensors for homes, classrooms, offices, public spaces, and workplace ventilation checks.
Compare CO2 ModelsReal-Time Remote Monitoring
Use connected models with the VisiblAir Cloud Portal to review CO2, PM2.5, VOC, temperature, and humidity trends from anywhere.
See Cloud FeaturesSchools, Offices, and Buildings
Match portable, battery, Wi-Fi, and PoE-ready sensors to classrooms, offices, meeting rooms, labs, and commercial buildings.
Read Buyer FAQNDIR CO2 Sensor Guidance
Learn how NDIR, dual-beam NDIR, photoacoustic, and MOX technologies affect CO2 monitor accuracy and maintenance.
Read NDIR GuideWhy Monitor Air Quality?
The air you breathe directly impacts your health, productivity, and well-being. Invisible pollutants can cause serious health issues without you even knowing.
Respiratory Health
PM2.5 particles are 30 times smaller than the width of a human hair and can penetrate deep into your lungs, causing respiratory issues and cardiovascular problems.
Cognitive Performance
High CO2 levels (>1000 ppm) can reduce cognitive function by up to 21%, affecting decision-making, concentration, and productivity.
Home & School Safety
VOCs from cleaning products, furniture, and building materials can cause headaches, dizziness, and long-term health effects.
The Invisible Threats in Your Air
Understanding what we monitor helps you make informed decisions about your indoor environment.
Carbon Dioxide
The Silent Productivity Killer
Sources:
- Human respiration
- Combustion appliances
- Poor ventilation
Health Impact:
- Fatigue & drowsiness
- Reduced concentration
- Headaches
Particulate Matter
Microscopic Airborne Particles
Types:
- PM1.0: Ultrafine particles
- PM2.5: Fine particles
- PM10: Coarse particles
Sources:
- Wildfire smoke
- Cooking & cleaning
- Outdoor pollution
Volatile Organic Compounds
Everyday Chemicals in the Air
Sources:
- Cleaning products
- Paints & solvents
- New furniture
Health Impact:
- Headaches & nausea
- Eye & throat irritation
- Long-term exposure risks
VisiblAir VOC readings use the Sensirion VOC Index for trends, not a direct ppb chemical concentration.
Nitrogen Oxides
Combustion and Traffic-Linked Gases
Sources:
- Gas stoves
- Vehicle exhaust
- Combustion appliances
Why Track It:
- Ventilation clues
- Combustion events
- Outdoor air intrusion
VisiblAir NOx readings use the Sensirion NOx Index for trends, not a direct ppb gas concentration.
Our Products
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
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.
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