Carbon dioxide (CO₂) is commonly found in office buildings, schools, hospitals, manufacturing facilities, breweries, wastewater treatment plants, and confined spaces where ventilation is limited. While CO₂ is naturally present in air at around 400 ppm, elevated concentrations can cause headaches, drowsiness, difficulty concentrating, and at very high levels, dizziness or loss of consciousness. OSHA sets the permissible exposure limit (PEL) at 5,000 ppm TWA. Our CO₂ monitors support compliance with ASHRAE 62.1 ventilation standards and building certifications including LEED, USGBC, and WELL.
RAECO Rents offers a range of CO₂ detectors and monitors from trusted brands like Honeywell RAE Systems, TSI, and Testo. Each gas monitor arrives calibrated and ready to use for indoor air quality assessments, process safety monitoring, and confined space applications. Choose from personal monitors, multi-parameter IAQ instruments, and combustion analyzers depending on your project requirements.
CO₂ monitoring is the process of measuring carbon dioxide levels in a specific environment to ensure safe air quality. It helps prevent overexposure, maintain regulatory compliance, and protect workers in industrial and commercial settings.
The OSHA permissible exposure limit (PEL) for CO₂ is 5,000 ppm as an 8-hour time-weighted average (TWA). NIOSH recommends a 5,000 ppm TWA with a 30,000 ppm short-term exposure limit (STEL). Indoor air quality guidelines from ASHRAE 62.1 recommend keeping CO₂ below 1,000 ppm for occupant comfort.
The TSI Q-Trak XP 7585 ($215/day) is ideal for LEED and WELL certification projects. It simultaneously measures CO₂, temperature, humidity, particulate monitoring & air velocity with data logging capabilities.
Diffusion monitors like the ToxiRAE Pro CO2 work well for continuous personal monitoring with longer battery life. Pump-style monitors like the MultiRAE Lite CO2 ($105/day) provide faster response times and are better for spot-checking in low-airflow environments or sampling from hard-to-reach locations.
Outdoor air contains approximately 400 ppm CO₂. Indoor levels of 600-800 ppm indicate good ventilation. Levels above 1,000 ppm suggest inadequate ventilation and may cause stuffiness and drowsiness. Concentrations above 2,000 ppm can cause headaches and difficulty concentrating.
CO₂ detector rentals from RAECO Rents start at $60/day for the ToxiRAE Pro CO2 personal monitor, $100/day for the VelociCalc 9565 or 982 IAQ Probe, $105/day for the MultiRAE Lite CO2 and $215/day for comprehensive IAQ instruments like the Q-Trak XP 7585 or EVM-7. Testo 340 & Testo 350 Combustion analyzers begn Weekly and monthly rates offer additional savings.
That will depend on your project & goals. Some questions you should consider:
Is this for IAQ testing, process safety, or compliance?
Are you doing personal exposure monitoring or area/room monitoring?
Do you need continuous logging or quick spot checks?
What CO₂ range do you expect (typical indoor 400–2,000 ppm or higher)?
Do you need an internal pump or will diffusion sampling work?
What else should you measure with CO₂ (temp, RH, VOCs, CO, particulates, airflow)?
If you’re unsure about what type of CO₂ monitor you need, contact us today and our staff will be happy to help!
Our factory-trained rental team is standing by, ready to help you with your project. Get in touch today to learn more!