**Please Note: The CO2Meter offices will be closed in observance of the US Thanksgiving holiday beginning at 5:00 pm et. Wednesday, November 24. All operations will reopen Monday, November 29 at 8:30 am et. Orders placed after noon et. November 24 will be fulfilled on November 29. Happy Holiday!**

IAQ MAX CO2 Monitor and Data Logger

IAQ MAX CO2 Monitor and Data Logger
Regular price $99.00

POs or wholesale quantity discounts click here

The (IAQ MAX) CO2 Monitor and Data Logger is a sleek, indoor air quality desktop monitor designed to measure and detect carbon dioxide (CO2), temperature, relative humidity, and barometric pressure.

Use the IAQ-MAX to monitor air quality in homesofficesclassroomscommercial buildings, or anywhere CO2 levels should be monitored for occupant comfort.

With the IAQ monitor and data logger users can easily understand how indoor air impacts the overall health and well-being of individuals, students, colleagues, or family members.

It features a large modern Liquid Crystal Display that showcases a 3-color coded indicator (green/yellow/red) and real-time data logging capabilities with free GasLab® software.


  • Large LCD display to show carbon dioxide (CO2), Temperature (Temp), Relative Humidity (HUM), and Barometric Pressure (BARO)
  • NDIR CO2 Sensor for fast, accurate and precise readings
  • Visual alarm and 3-color code (Green/Yellow/Red) Indication
  • CO2Meter recommends calibrating the device upon arrival - see the calibration procedure, here.
  • Built-in Data Logging capability
  • Powered by USB cable
  • Rechargeable Lithium batteries (3 hours max - backup battery)
  • Retains logged data for last 30 days
  • Fresh Air, Automatic Calibration
  • Clean, Modern Desktop Design 


This device will NOT meet requirements for CO2 safety monitoring which requires a Fixed/Wall mounted, hard-wired alarm per the NBIC, NFPA, or IFC regulations. Refer to our CO2 Safety Products page for devices that meet your needs.

Call us at (877) 678-4259 toll-free or email us to speak with our technical sales team about purchasing the correct device.

Click Here to View our IAQ Product Comparison Chart 

View Indoor Air Quality Monitor Comparison Chart


  • CO2 Measurement: non-dispersive infrared (NDIR)
  • CO2 Measurement Range: 400-5,000ppm
  • Accuracy: ± 50ppm ± 5% reading value
  • Warm-Up Time: 1 sec
  • Response Time: T90 < 120s
  • Temperature Range: -10°C to 50°C (+14° to +122°F)
  • Working Humidity: 0 ~ 90% RH (No condensation)
  • Display: Date, Clock, Battery, CO2, Temp, %RH, Baro
  • Power Supply: USB Cable
  • Working voltage: 4.5 ~ 5.5 V DC
  • Lifespan: > 5 years
  • Dimensions: 5.75 (l) x 3.0 (w) x 5.5 (h)


  • IAQ Max CO2 Desktop Monitor/Data Logger
  • USB Cable
  • Rechargeable Lithium Ion Batteries (backup battery)
  • User's Manual


  • 1 year - See CO2Meter Terms and Conditions


IAQ Max Indoor Air Quality Monitor and Data Logger Datasheet Data Sheet (pdf)

IAQ Max Indoor Air Quality Monitor and Data Logger Manual Manual (pdf)

IAQ Max Calibration Procedure Calibration Procedure (pdf)

IAQ Max GasLab Interface Data Logging Manual GasLab Interface Data Logging Manual (pdf)

IAQ Max Frequently Asked Questions IAQ-MAX Frequently Asked Questions (FAQs) (pdf)

Indoor Air Quality Monitoring Landing Page Indoor Air Quality Monitoring Landing Page

Free Easy-to-use GasLab® Software 

This device uses GasLab® software for setup, calibration, data logging, and real-time data analysis. GasLab® makes it easy to export data into a .CSV file that can be imported into any industry-standard software or spreadsheet. GasLab® runs on Windows XP or higher, and free to use with our products.

Download Latest Software Here

System Requirements for Data Logging or Changing Defaults

  • Windows XP SP2 or newer
  • Microsoft .Net 3.5 Runtime Libraries

  • Data Sheets

  • Manuals

  • Technical Documents

  • Videos

  • Additional Resources

Customer Reviews

Based on 19 reviews
Clay Merchant

IAQ MAX CO2 Monitor and Data Logger

Bruce P
Arrived swiftly

As a device it is well-designed, highly legible, quick to read and generally very appealing. However, although it claims to be accurately pre-calibrated and I gave it enough outdoors time to adjust, the temperature readings are inaccurate, which is disappointing. I bought it for the C02 reading only, so that is not necessarily important, but it leaves me wondering how accurate that CO2 reading actually is. Still, as long as it is consistent it will still come in handy on the important issue of air quality.

craig castanet
Great for co2

Question accuracy for temp and humidity but bought it for co2 which is great

Daniel Goldberg
Accurate, useful and simple

Does the job, well chosen UI, simple calibration. What's not to like

Julie Seib

IAQ MAX CO2 Monitor and Data Logger

"Easy to install, easy to set up, and easy calibration - just what I was looking for."

- Phillip Farrar
Water Plant Superintendent

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