Carbon Dioxide Detectors: Rent or Buy
Carbon dioxide (CO₂) is a colorless, odorless gas produced by combustion, fermentation, metabolic processes, and industrial operations. It is widely present in breweries, beverage carbonation facilities, confined spaces, greenhouses, HVAC systems, and fire suppression environments.
PICK HOW YOU NEED TO MONITOR
Detectors to Rent for Carbon Dioxide
Personal monitors are worn in each worker's breathing zone and alarm on their exposure. Area monitors watch a fixed point, room or job site. Pick a style below, then compare every option in the table.
Top pick
Add-ons, kits and consumables
COMPARE OPTIONS
Carbon Dioxide detectors side by side
| Instrument | Monitoring | Detection method | Range | Resolution / lowest alarm | Sampling | Battery run time | Intrinsically safe | Data logging | Starting at |
|---|---|---|---|---|---|---|---|---|---|
| Multi-Gas Monitors Read several gases at once from interchangeable sensors, worn on the body or set down as an area monitor. The sensors fitted decide which gases they read. | |||||||||
| MultiRAE Lite CO2 by Honeywell RAE Systems | Personal + Area | Non-dispersive infrared | 0 to 50,000 ppm (0 to 5.0% Vol.) | 100 ppm | Internal pump | Approx. 12 hours pumped | Yes | Yes | $110.00 / day |
| Single-Gas Personal Monitors Small clip-on detectors that read one gas in the worker's breathing zone and alarm at set levels. | |||||||||
| ToxiRAE Pro CO2 by Honeywell RAE Systems | Personal | Non-dispersive infrared | 0 to 50,000 ppm (0 to 5.0% volume) | 100 ppm | Diffusion | Greater than 11 hours normal operation at 25°C | Yes | Yes | $65.00 / day |
| Indoor Air Quality Monitors Multi-parameter instruments for indoor surveys that log temperature and humidity alongside gases and particulate. | |||||||||
| EVM-7 by TSI Quest | Area | Non-dispersive infrared (NDIR) | 0 to 5000 ppm | 1 ppm | Internal pump | Minimum of 8 hours under continuous operation | No | Yes | Buy used $4,750.00 |
| TSI Q-Trak XP 7585Top pick | Area | Non-dispersive infrared (NDIR) | 0 to 5,000 ppm | 1 ppm | Fan-assisted diffusion (no pump) | Approximately 8+ hours | No | Yes | $225.00 / day |
| Ventilation Meters Handheld meters for HVAC and ventilation work that read air temperature and humidity alongside air velocity and pressure. | |||||||||
| VelociCalc 9565 by TSI | Area | — | 0 to 5,000 ppm | 1 ppm | — | Approx. 15 hours continuous on 4 AA batteries | No | Yes | $55.00 / day |
| Outdoor Monitoring Stations Weatherproof stations left on site for continuous perimeter or fenceline monitoring, with remote access to the data. | |||||||||
| Aethair PRO by Aethair | Area | — | 400 to 5000 ppm | 1 ppm (±45 ppm accuracy) | Internal pump with automatic flow control | ~18 hours | No | Yes | $250.00 / day |
For instruments that take interchangeable sensors or cassettes, range and resolution are for the CO₂ sensor or cassette. Run times are manufacturer estimates and vary with configuration and conditions. Not sure? Talk to our team.
WHERE EXPOSURE OCCURS
Risks: Where Carbon Dioxide Exposure Occurs
Carbon dioxide (CO₂) monitoring is important anywhere the gas can build up and reduce oxygen levels, especially in confined spaces and areas using dry ice. Rent CO₂-capable gas monitors from RAECO Rents for confined space entry, beverage production, cold storage, and indoor agriculture applications. Gas monitors are bump tested or span calibrated on the day of shipment, and our team provides practical guidance selecting the right monitor and alarm settings, with fast turnaround and phone support so you can get reliable field readings quickly.
Breweries, wineries & beverage carbonation
Fermentation and carbonation release CO₂ that settles in cellars, tank rooms and pits.
Typical setup: Personal CO₂ monitors for workers plus an area monitor in low-lying rooms.
Indoor air quality & ventilation
CO₂ levels show whether offices, schools and other occupied buildings are getting enough fresh air.
Typical setup: An indoor air quality monitor that logs CO₂, temperature and humidity.
Confined spaces & low-lying areas
CO₂ is heavier than air and collects in pits, vaults, cellars and tanks, where it displaces oxygen.
Typical setup: A multi-gas monitor with a CO₂ sensor, checked before and during entry.
Dry ice, cold storage & fire suppression
Dry ice and CO₂ suppression systems can raise levels quickly in enclosed rooms.
Typical setup: Personal CO₂ monitors where dry ice is handled or stored.
EXPOSURE LIMITS
Carbon Dioxide exposure limits
- TWA5,000 ppm (9,000 mg/m³)
- TWA5,000 ppm (9,000 mg/m³)
- STEL30,000 ppm (54,000 mg/m³)
- IDLH40,000 ppm
- TWA5,000 ppm (9,000 mg/m³)
- STEL30,000 ppm (54,000 mg/m³)
TWA = 8-hour time-weighted average (NIOSH RELs are 10-hour). STEL = 15-minute short-term limit. IDLH = immediately dangerous to life or health. Updated October 8, 2026.
Carbon Dioxide monitoring questions
All rental FAQs →Not sure which carbon dioxide detectors fit your job?
Tell us where the hazard is and how many workers need coverage. We'll recommend the instrument, range and alarm settings.
For educational purposes only. Exposure limits are summarized from the cited agencies; confirm monitoring requirements for your site with a qualified safety professional.