The Best CO2 Monitors You Can Buy.
These are my picks for the top carbon dioxide monitors you can purchase now. Please remember that I have only discussed monitors I have tried. Let's get into it!
The best overall carbon dioxide monitor.
Probably to the surprise of no one, the @AranetIoT Aranet4 Home remains the best carbon dioxide monitor I've tried. Besides its price (which has dropped significantly recently), the Aranet4 Home has no significant downsides. It's accurate, has manual calibration, and has a great app, which I've never had any issues with.
The INKBIRD IAM-T1 is also a good choice as it's a well-rounded monitor. That said, I would only recommend it over the Aranet4 Home if the price is significantly cheaper. If the price is similar between the two monitors when you want to buy, the Aranet is worth it. However, if you can find the IAM-T1 cheaper, it's worth considering as it has almost all of the features of the Aranet4 (minus the on-demand readings) and is only a bit larger.
Both of these monitors do well in all settings. They can be left at home or in an office, or you can take them out daily. They both have apps which I've never had any issues with, and, of course, they're both accurate.
Aranet4 review:
IAM-T1 review:
Best affordable carbon dioxide monitor.
If you want to save money, you'll want to be wary. Cheaper carbon dioxide monitors often use electrochemical sensors that are less accurate than NDIR sensors and should be avoided whenever possible. Luckily, there is one good affordable option, which is the Vitalight Mini CO2 Detector.
This monitor comes in at less than $50 and is very accurate - provided it is calibrated correctly. The automatic calibration 'feature' is a flaw that needs to be managed, but it is an accurate device if you do this. To learn more about this issue, please refer to my full reviews:
Article:
Video:
There are a few other cheap devices out there that I have yet to try, but I've had good experiences with the Vitalight. While it certainly has flaws, being able to monitor CO2 accurately at this price point is enough of a selling point for me.
Best connected carbon dioxide monitor.
If you need multiple carbon dioxide monitors and want them to report back to a central dashboard, the CO2 Click Model C from @IndianaTux is perfect. If you want to use Aranets, you'll need to purchase Aranet4 Pros and the base station, which cost hundreds of dollars. On the other hand, the Model C has this same connectivity built in my default (and it's cheaper than an Aranet at full price!).
This makes the Model C a very powerful tool for offices, businesses, schools and even homes with multiple monitors. You can easily view your data on the online dashboard, which is aggregated from all monitors in your network. This is very powerful, and this connectivity comes at no extra cost over the monitors themselves.
Even if you don't want to use multiple monitors, the CO2 Click Model C is still a good choice. It's a very well-rounded monitor, and it is even the only one with a dual beam NDIR sensor on this list.
Co2 Click review article:
Best desk-based carbon dioxide monitor.
If you want a carbon dioxide monitor to sit on your desk, I recommend the Qingping Air Quality Monitor or Air Quality Monitor Lite, which are sold by @SmartAirFilters. These devices are handy because, alongside monitoring carbon dioxide, they also monitor PM2.5, PM10, and tVOCs (depending on which monitor you pick). Since they have high-quality displays and rather short battery life, they are ideally suited to be used around the home.
While the AQM is more expensive than the AQM Lite, both are fantastic products with different appeals. The AQM has a larger touchscreen display, giving you tons of information at a glance. On the other hand, the AQM Lite gives less information and is more minimalistic. However, both send all of their data to the accompanying (and solid) application.
AQM review:
AQM Lite review:
Are there any monitors that you believe are missing? I have a review for the@SmartAirFilters CO2 monitor coming up, but is there anything else you would add to this list?
These are my picks for the top carbon dioxide monitors you can purchase now. Please remember that I have only discussed monitors I have tried. Let's get into it!
The best overall carbon dioxide monitor.
Probably to the surprise of no one, the @AranetIoT Aranet4 Home remains the best carbon dioxide monitor I've tried. Besides its price (which has dropped significantly recently), the Aranet4 Home has no significant downsides. It's accurate, has manual calibration, and has a great app, which I've never had any issues with.
The INKBIRD IAM-T1 is also a good choice as it's a well-rounded monitor. That said, I would only recommend it over the Aranet4 Home if the price is significantly cheaper. If the price is similar between the two monitors when you want to buy, the Aranet is worth it. However, if you can find the IAM-T1 cheaper, it's worth considering as it has almost all of the features of the Aranet4 (minus the on-demand readings) and is only a bit larger.
Both of these monitors do well in all settings. They can be left at home or in an office, or you can take them out daily. They both have apps which I've never had any issues with, and, of course, they're both accurate.
Aranet4 review:
IAM-T1 review:
Best affordable carbon dioxide monitor.
If you want to save money, you'll want to be wary. Cheaper carbon dioxide monitors often use electrochemical sensors that are less accurate than NDIR sensors and should be avoided whenever possible. Luckily, there is one good affordable option, which is the Vitalight Mini CO2 Detector.
This monitor comes in at less than $50 and is very accurate - provided it is calibrated correctly. The automatic calibration 'feature' is a flaw that needs to be managed, but it is an accurate device if you do this. To learn more about this issue, please refer to my full reviews:
Article:
Video:
There are a few other cheap devices out there that I have yet to try, but I've had good experiences with the Vitalight. While it certainly has flaws, being able to monitor CO2 accurately at this price point is enough of a selling point for me.
Best connected carbon dioxide monitor.
If you need multiple carbon dioxide monitors and want them to report back to a central dashboard, the CO2 Click Model C from @IndianaTux is perfect. If you want to use Aranets, you'll need to purchase Aranet4 Pros and the base station, which cost hundreds of dollars. On the other hand, the Model C has this same connectivity built in my default (and it's cheaper than an Aranet at full price!).
This makes the Model C a very powerful tool for offices, businesses, schools and even homes with multiple monitors. You can easily view your data on the online dashboard, which is aggregated from all monitors in your network. This is very powerful, and this connectivity comes at no extra cost over the monitors themselves.
Even if you don't want to use multiple monitors, the CO2 Click Model C is still a good choice. It's a very well-rounded monitor, and it is even the only one with a dual beam NDIR sensor on this list.
Co2 Click review article:
Best desk-based carbon dioxide monitor.
If you want a carbon dioxide monitor to sit on your desk, I recommend the Qingping Air Quality Monitor or Air Quality Monitor Lite, which are sold by @SmartAirFilters. These devices are handy because, alongside monitoring carbon dioxide, they also monitor PM2.5, PM10, and tVOCs (depending on which monitor you pick). Since they have high-quality displays and rather short battery life, they are ideally suited to be used around the home.
While the AQM is more expensive than the AQM Lite, both are fantastic products with different appeals. The AQM has a larger touchscreen display, giving you tons of information at a glance. On the other hand, the AQM Lite gives less information and is more minimalistic. However, both send all of their data to the accompanying (and solid) application.
AQM review:
AQM Lite review:
Are there any monitors that you believe are missing? I have a review for the@SmartAirFilters CO2 monitor coming up, but is there anything else you would add to this list?
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