![\"smart](\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2021\/10\/smart-air-CO2-monitor.jpg\")
<\/figure><\/div>\n\n\nWhy Use CO2 Monitors?<\/h3>\n\n\n\n
CO2 monitors can help measure how well a room is ventilated. The higher CO2 levels are, the worse the ventilation. Why is ventilation so important when it comes to the spread of respiratory viruses? The CDC has released data<\/a> showing strong correlations between poor ventilation and high COVID-19 spread.<\/p>\n\n\n When buying a CO2 monitor, some important factors to consider include:<\/p>\n\n\n\n In general, CO2 monitors with non-dispersive infrared (NDIR) sensors work very well. Cheaper devices with several sensors that measure Volatile Organic Compounds and Formaldehyde alongside CO2 are not recommended. This is because they likely use a different type of sensor which is less accurate.<\/p>\n\n\n Expensive relative to the competition, but the Aranet 4 is very accurate, with readings closely tracking the reference CO2<\/sub> detectors used. It is recommended to do a weekly calibration of the Aranet 4 monitor. Data can also be collected with an app.<\/p>\n\n\n\n Price: $290 USD A less expensive option, Temtop is highly correlated and with good background calibration. However, it does not contain any data export function.<\/p>\n\n\n\n More expensive than most of the other options, the Wohler CDL 210 is one of the highest correlation. Moreover, it enables continuous logging and subsequent data export to PC (even with no power). However, Wohler sacrifices some portability as it has to be plugged in during measurement. <\/p>\n\n\n\n For the same price, the AZ 7755 boasts a higher correlation than most monitors on the market. Data can be stored and analyzed on a PC with the appropriate cable. <\/p>\n\n\n\n The new 3-in-1 air monitor from Smart Air measures CO2, temperature and relative humidity. Long-lasting with a battery life of up to 30 days, our low-cost monitor gives you the flexibility of choosing the alert thresholds and the frequency of recording. Check out here<\/a>.<\/p>\n\n\n![\"\"](\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2021\/08\/HEPAfilterinfectionrate-2-e1629229092548-1024x755.png\")
<\/figure><\/div>\n\n![\"Smart](\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2023\/11\/co2-safety-limit-chart.jpeg\")
<\/figure><\/div>\n\n\nFactors for choosing a CO2 monitor for Home and Office
<\/strong><\/h3>\n\n\n\n\n
<\/strong><\/li>\n<\/ul>\n\n\n\nRecommended CO2 Monitor Technology<\/h3>\n\n\n\n
![\"\"](\"https:\/\/lh3.googleusercontent.com\/9eDd3lsr5p7FsM1VdF1CSiY82NilsNaWhdw37OTn6DQen_VdoYbsOKMMb-bNkmKnI1s-pdkQGvkxbKWbh9j8Oy1d5LNI36LfQrtET4EOX6cOyOgR2XzBAWRRnWzPLfwQWKfs9PHqEbr3AJDMEQ=s1600\")
Best CO2 Monitors for COVID-19<\/h3>\n\n\n\n
<\/strong>Below are the best CO2 monitors that are in line with the above factors. These recommendations are based on extensive CO2 monitor tests. All monitors had accuracies at or above 94%. For full details on the monitor tests, check out the test data<\/a>.
Note: R2<\/sup><\/em> is used as the measure of correlation<\/a> of the monitors. R2<\/sup><\/em> measures how much variance exists between the actual value of CO2 versus the calculated value by each monitor. An R2<\/sup><\/em> of .7 is represented by an correlation of 70% in this article.<\/p>\n\n\n\nAranet 4<\/h4>\n\n\n\n
Correlation<\/strong>: 98%<\/strong>
Average Deviation: 1.5%
Sensor accuracy: \u00b130 ppm or \u00b13%<\/strong><\/p>\n<\/div>\n<\/div>\n\n\n![\"Aranet](\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2021\/10\/aranet4.jpeg\")
<\/figure><\/div>\n\n\nTemtop M2000<\/h4>\n\n\n\n
Price: $170 USD
Correlation: 96%<\/strong>
Average Deviation: -15%<\/strong>
Sensor accuracy: \u00b150 ppm or \u00b15%<\/strong><\/p>\n\n\n![\"Temptop](\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2021\/10\/M2000.jpg\")
<\/figure><\/div>\n\n\nWohler CDL 210<\/h4>\n\n\n\n
Price: $269 USD
Correlation: 99%
Average Deviation: -0.2%<\/strong>
Sensor accuracy: \u00b150 ppm or \u00b15%<\/strong><\/p>\n\n\n![\"Wohler](\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2021\/10\/wohler-cdl.jpg\")
<\/figure><\/div>\n\n\nAZ 7755<\/h4>\n\n\n\n
Price: $269 USD
Correlation: 98%
Average Deviation: -0.9%
Senor accuracy: \u00b150 ppm or \u00b15%
<\/strong><\/p>\n\n\n![\"AZ](\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2021\/10\/AZ7755.jpg\")
<\/figure><\/div>\n\n\n
<\/p>\n\n\n\nUpdate: Smart Air CO2 Monitor<\/a><\/h2>\n\n\n\n
![\"\"](\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2023\/08\/smart-air-co2-monitor-app-600x600.jpg\")
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