Please Note, Orders Placed After 2pm EST Today 10/27, will ship Monday 11/1 to Allow for Company System Upgrades.

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 15 reviews
Julie Seib

IAQ MAX CO2 Monitor and Data Logger

paul Post
3 Weeks in...

Very nice display. Haven’t had it long enough to check the logger function but it was easy to calibrate and the built in battery is very handy for room checks.

Bob Miller
IAQ MAX CO2 Monitor

An elegant little device that did exactly what I was looking for - confirm that the CO2 levels in our home were healthy, which they were.

Easy to get up and running! No regrets, a nice little device that works!!

Nice CO2 meter that's easy to read and calibrate for the home user

After following several public health officials who noted CO2 levels are a good indicator of how often your home has fresh air circulating through it, I decide to buy a CO2 monitor. I went with this one as it has a nice readout, and I liked it had the barometer feature - living in the Upper Midwest, that's always a nice feature to have during severe storm season, so it's something I can use even after my state settles down with COVID infections. But I was really pleased at how easy it is to calibrate this out of the box. I popped it outside on our porch for 10 minutes, and it was ready to go - compared to our Air Quality meter which needed several hours, it was a snap. I also like how the numbers match the color coding of air quality - even without my glasses to see the exact number, I can see if it's green, yellow or red! I haven't tried downloading data yet so I can't speak to that. But I really am enjoying knowing I am getting good air circulation in our condo, in case one either my husband or I is asymptomatic and sick. Good air circulation seems to be the key to keeping others from catching COVID, and this is a nice, easy to use meter to ensure you have your air turning over!

Jeremy Clough
Fairly pleased so far

We're using these to track air quality as a COVID concentration indicator. So far 3 of the 4 we ordered read very close to the same values; the 4th has been off, but may serve our purpose well enough. Jury is still out.
However, they don't hold a charge long, so be prepared to keep them plugged in most of the time.

"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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