Premium CO2 monitors, air quality devices & accessories serving 7 countries. Breathe cleaner, live healthier — shop your country below.
We operate local CO2 monitor stores across 7 countries, each tailored to local delivery, pricing, and product availability.
Empowering businesses and individuals to monitor and manage air quality with precision — ensuring safety and promoting health worldwide.
Accurate, live CO2 readings with instant alerts when levels rise above safe thresholds, keeping your environment under constant watch.
We operate internationally with a local approach — tailoring products and support to the specific regulations and needs of each country we serve.
Our monitors feature smartphone integration, data logging, and the latest NDIR CO2 sensor technology for industry-leading measurement accuracy.
Solutions for every environment — from residential bedrooms and home offices to large-scale commercial warehouses, schools, and healthcare facilities.
We ship globally, working with trusted couriers in each country to ensure your equipment arrives quickly and safely, wherever you are.
Our customer support team is available 7 days a week to help with product selection, setup guidance, calibration advice, and after-sales assistance.
From home offices in Auckland to warehouses in Toronto, customers rely on CO2 Company for accurate air quality monitoring.
"Finally I can actually measure the air quality in my classroom. My students are noticeably more alert since we started managing CO2 levels. Brilliant product and super fast shipping."
"We installed CO2 monitors across our entire office building. The data was eye-opening — our afternoon productivity slump was entirely driven by poor ventilation. Fixed now!"
"Outstanding quality monitor and the customer service team answered all my questions within hours. Delivered to Vancouver in 3 days. Will absolutely order again for my second location."
"My baby's nursery CO2 levels were way higher than I expected. This monitor gave me peace of mind and helped me figure out the exact ventilation changes needed. Worth every cent."
"Used to feel exhausted by 2pm every day working from home. Turns out my CO2 was through the roof. A monitor and proper ventilation routine has completely transformed my workday."
"We bought 12 units for our gym. Customer support helped us work out the best placement strategy. Our clients have noticed the difference and our retention has improved. Highly recommend."
From entry-level home monitors to calibrated industrial instruments, our range covers every environment and budget.
Every great company has a secret weapon. Ours is Fifi — a remarkably talented French Bulldog who holds the distinguished title of CEO of Sleep at CO2 Company HQ.
Fifi takes air quality seriously. Very, very seriously. So seriously, in fact, that she insists on testing the office air quality by napping in every corner of the building — multiple times a day — just to make sure the CO2 levels are safe enough for deep, uninterrupted sleep.
When she's not auditing nap conditions, Fifi serves as our Head of Website Build Work and Pawductivity Expert, occasionally reviewing dashboards with one eye open and a look of quiet disdain for any monitor that dares to alarm during her afternoon snooze.
Fifi officially approves of every product we ship — by sleeping next to it first. If she wakes up refreshed, you know the air quality is spot on.
Everything you need to know about CO2 monitors, air quality, ordering, and more.
Choosing the right CO2 monitor can feel overwhelming with so many options available. This guide will help you understand what to look for, what to avoid, and how to match the right air quality monitor to your specific environment.
Carbon dioxide is produced by every breath we exhale. In well-ventilated spaces, CO2 disperses quickly and poses no issue. But in enclosed rooms with limited fresh air supply — classrooms, offices, bedrooms, conference rooms, restaurants — CO2 can build to levels that measurably impair cognitive function, cause fatigue, and increase susceptibility to airborne illness.
A quality CO2 monitor gives you objective, real-time data that takes the guesswork out of ventilation management. Instead of waiting until occupants feel uncomfortable, you can proactively adjust airflow the moment CO2 begins to climb.
The most important distinction in CO2 monitor quality is the sensor type. Non-dispersive infrared (NDIR) sensors use light absorption to directly measure CO2 concentration. They are accurate (typically ±50 ppm), stable over time, and have operational lifespans exceeding 10 years. Electrochemical sensors, found in cheaper devices, are less accurate, prone to drift, and need replacing more frequently. For any serious monitoring application, always choose NDIR.
For general indoor use, a range of 400–5000 ppm is adequate. Industrial or research applications may require ranges up to 10,000 ppm or beyond. Resolution should be at least 1 ppm for precise readings. Higher resolution becomes important when monitoring small fluctuations in environments where very tight CO2 control is required.
Look for a large, easy-to-read display with colour coding — typically green for safe, amber for caution, and red for action required. Audible and visual alarms are important for environments where occupants cannot constantly monitor a display. Multi-level alarm thresholds allow you to set early warning and critical alert levels independently.
For commercial, educational, and regulatory purposes, data logging is essential. Look for internal memory with sufficient capacity for your monitoring period, plus easy data export via USB, SD card, or wireless connectivity. Smart monitors with Wi-Fi, Bluetooth, Zigbee, or Z-Wave connectivity allow integration with building management systems and smartphone monitoring apps.
For home monitoring, a compact desktop or wall-mounted unit with a colour display is ideal. Prioritise ease of use, a clean aesthetic, and Wi-Fi connectivity if you want smartphone integration. Bedroom monitoring is particularly valuable — overnight CO2 buildup is a common but overlooked cause of poor sleep quality.
Open-plan offices require multiple monitors positioned throughout the floor to capture CO2 gradients. Network-connected monitors that feed into a central dashboard allow facilities managers to monitor an entire building from one interface. CO2-based demand-controlled ventilation (DCV) systems can automate HVAC response, saving significant energy costs while maintaining air quality.
Classrooms benefit enormously from visible, traffic-light style CO2 displays that allow teachers to take immediate action. Studies have demonstrated that reducing classroom CO2 from 2000 ppm to below 800 ppm can improve student test scores by up to 15%. Portable units allow monitoring across multiple classrooms, while fixed units provide continuous data for a single room.
High-density dining environments see rapid CO2 buildup, especially during peak service. CO2 monitoring helps hospitality operators maintain safe, comfortable environments that improve the dining experience and demonstrate responsible management of indoor air quality to customers and inspectors alike.
Vulnerable populations are more sensitive to air quality impacts. CO2 monitoring in hospitals, clinics, aged care homes, and nurseries provides an additional layer of protection, ensuring that even at high occupancy, air quality remains within safe parameters. Medical-grade units with calibration certificates may be required for regulated environments.
Exercise significantly increases CO2 output per person. A gym at moderate occupancy can see CO2 levels climb to uncomfortable levels within minutes without adequate ventilation. Real-time CO2 monitoring allows gym staff to adjust ventilation dynamically, protecting member health and enhancing workout performance.
CO2 can accumulate in enclosed industrial spaces, particularly in cold stores, server rooms, and areas with CO2 fire suppression systems. Industrial monitors must be robust, accurate at higher concentration ranges, and capable of triggering relay outputs for safety alarms and automated ventilation control.
Correct placement is crucial for accurate readings. Mount CO2 monitors at breathing height — typically 1.0–1.5 metres from the floor. Position away from doorways, windows, air supply vents, and direct sunlight. For large spaces, multiple monitors may be required to capture the CO2 distribution across the room. Allow monitors a 30-minute stabilisation period when first powered on, especially after repositioning.
Regular calibration ensures your data remains trustworthy. For general use, annual factory calibration verification is recommended. Monitors with automatic baseline correction (ABC) simplify maintenance in environments with regular exposure to fresh outdoor air. Keep sensor inlets clean, free from dust and particulates, and ensure firmware updates are applied to maintain software-based accuracy improvements.
Avoid monitors that do not clearly specify their sensor technology — devices with unlisted or "proprietary" sensors often use cheaper, less accurate alternatives to NDIR. Be wary of exceptionally low-priced units; a reliable NDIR-based monitor requires quality components that cannot be produced at bargain prices. Check that the device comes with a calibration certificate if required for compliance purposes, and confirm the availability of local support and replacement parts before purchasing.
Before purchasing a CO2 monitor, verify: NDIR sensor technology; appropriate measurement range for your environment; clear display with colour-coded alerts; audible alarm capability; data logging and export function; connectivity for your specific use case; CE and FCC certification; warranty and local support availability. Our team is available to help you match the right product to your needs — contact us at [email protected] or visit your country store below.
CO2 Company is committed to full transparency. Here are our registered business details so you can shop with complete confidence.
CO2 Company — a division of Caruso Consulting Co Ltd
0765554000332
47 Moo 1, T. Nawoong, Meaung, Phetchaburi, 76000, Thailand
We deliver Worldwide. Fast shipping from local distribution partners in each country.
Our customer support team is available 7 days a week. Reach out by phone or email and we'll get back to you promptly.
Join thousands of homes, schools, offices, and businesses that already use CO2 Company monitors to manage their indoor air quality. Shop your country store today.