Best Co2 Meter

5 Best Co2 Meter To Buy In 2022

Carbon dioxide (CO2) is a colorless, odorless, non-poisonous gas. The increase of carbon dioxide (CO2) in the atmosphere has become a major cause for concern in most countries. The annual rate of increase in CO2 in the atmosphere over the last 60 years is almost 100 times faster compared to prior natural increases.

The brunt of increased CO2 is most prominent in urban areas due to continued industrialization. But urbanization has also resulted in increased CO2 levels inside homes due to lack of ventilation, resulting in major health concerns.  As a result, CO2 sensors have become extremely popular in recent times as they effectively detect and provide an alert whenever the CO2 levels become higher than a particular threshold. These sensors are also used in commercial settings or in greenhouses.

A CO2 meter is a device that measures the CO2 concentration in the air. It can be used to measure indoor or outdoor air. co2 meter adopts a new type of infrared verification technology for CO2 concentration measurement, and the response is rapid and sensitive. 

Editor’s Choice: Best Co2 Meter

5 Best Co2 Meter

While the polluted air outdoors is easily detectable by the look, smell, and even taste of it, air pollution indoors is hard to detect without a proper device. To help you make the decision on which air quality and CO2 monitor to choose, here’s our 7 top performing air quality sensors for your home or office!

1. Hydrofarm APCEM2 Autopilot Desktop CO2 Monitor & Data Logger

Hydrofarm APCEM2 Autopilot Desktop CO2 Monitor & Data Logger, Data, White/Blue

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Accuracy, new features, and unparalleled cost in one CO2 Monitor. The autopilot APCEM2 desktop CO2 Monitor displays CO2, relative humidity, and temperature values over a 24-hour or 24-day period. With trend Chart, the gadget can track the above amounts over the past Min, hours, or 7 days. The autopilot APCEM2 desktop CO2 Monitor has a hook-and-loop fastener on the back to secure an external battery Pack. By maximizing mobility, the gadget may be transported to any location-living room, kitchen, office-to Monitor iaq. The autopilot APCEM2 desktop CO2 Monitor can be powered by a laptop, wall adapter, or external battery pack (power bank). not stretched The log function displays historical data at any position on the chart. Before using this function, pick the desired Zoom Level. Once LOG is enabled, use “up” and “down” to change between time divisions to observe parameter measurements. Enter again to leave This mode/temperature/humidity error, please turn off power adapter and let device dry for 12 hours. Measuring CO2 50 ppm or 5% of reading at 0-3000 ppm. >3000 ppm: 7%

Carbon Dioxide Meter

Autopilot APCEM2 Desktop CO2 Monitor and Data Logger Monitors carbon dioxide, relative humidity, and temperature of your grow room or greenhouse on a clear LED screen. This device is simple to use and can be set up in minutes. The APCEM2 includes a USB cable, AC adapter and instruction manual. The adjustable timer allows you to control how many hours of CO2 output each day and how many hours of no CO2 output each day; this is useful for those who don’t want their plants receiving 24/7 light exposure so they can “rest” or “sleep” at night.


Digital memory chart shows and records stats over an adjustable 24-hour or 7-day period; The trend chart shows variable Min/Hr/Day/Wk for readings of CO2/RH/Temperature. The digital memory chart can record information over a 24-hour period, or you can use it to display the current time of day. The trend chart displays variable min/hr/day/wk for readings of CO2, RH and temperature. This is a great tool for checking environmental changes in your home or office.

Sensor & Alarm

The CO2-L is a low cost, low drift NDIR CO2 sensor with a built in audible alarm. The sensor can be used to monitor CO2 levels in areas that require alerts when CO2 exceeds safe levels. The CO2-L is designed to be used with any microcontroller that has analog inputs and can generate PWM signals on its output pins. The unit comes calibrated for operation between 600-1000 ppm of CO2 and includes a built in calibration adjustment screw which allows the user to calibrate out any static offset that may occur due to temperature changes.

Operating Temperatures

The portable thermometer is a new, accurate and reliable source of information. It has a range of 32 to 122 degrees F and can be used indoors or outdoors. The unit is powered by one 9V battery (included) and has a large digital readout that displays both Fahrenheit and Celsius readings. The thermometer comes with a storage case, so it’s easy to take it with you wherever you go. The compact size makes this thermometer perfect for home use or in the office where temperature measurements are critical. It can also be used in laboratories, industrial settings or any other place where temperature measurement is required.


Features multiple hanging options with the hook-and-loop fastener along the back that attaches to an external battery pack (battery pack not included); Green power supply is compatible with a standard smartphone charger; Dimensions (L x W x D): 4.7 x 3.6 x 1.1 inches

Active Air Co2 System With Timer

With a user-friendly, simple-to-use technology, deliver plant-growth-promoting CO2. It will automatically maintain proper CO2 levels for optimal development thanks to its customizable timer. Choose the COSYS for small to medium spaces, and the COSYS20 for areas greater than 10′ x 10′.

2. Air Quality Monitor Indoor, CO2 Detector

CO2 Monitor Air Quality Monitor Indoor, 2022 Upgrade 8-in-1 Carbon Dioxide Detector CO2 Monitor Portable CO2 Alarm Meter with PM, Temp, Humidity CO2 Sensor for Home, Grow Tent, Wine Cellar, Car

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Air Quality Monitor Indoor, CO2 Detector, 6-in-1 Air Pollution Carbon Dioxide Detector with PM2.5/1/10, Temperature, Humidity Professional Sensor Real Time Reading, CO2 Alarm Meter. Air Quality Monitor Indoor is a professional sensor that monitors PM2.5, PM1 and PM10 particulate matter; Temperature and Humidity. It is an integrated sensor with 6 functions in one product. You can easily monitor all the air pollution indexes in your home or office.

Know Your Air

The air quality tester has built-in advanced Infrared (NDIR) & laser scattering detection sensors designed to accurately track air quality including CO2, PM2.5、PM1.0 and PM10 (particulate matter), temperature and humidity. Air quality tester can be used in many different ways, like testing your indoor air quality before purchasing an air purifier or testing the air outside before you go for a jog or bike ride. It is also great for checking the CO2 levels at night when sleeping with the app to see if your bedroom gets too hot or cold. Tips: Please let the device work short mins outdoor before use for most accurate results.

Auto Alarm & 10+ Hours Standby

When completely charged, the built-in 2000 mAh battery can supply more than 10 hours of standby time, in addition to real-time power through the provided USB charging cable, allowing for long-term air quality monitoring. To turn on/off the automatic alarm function, press the main function key twice fast (An alarm will be issued when the CO2 reading exceeds 1000ppm).

Instant Readout 2.8″

Professional sensors require only 1.5s of sampling time and can display the current air quality on the screen in real time. The CO2 detector has a 2.8in large display that shows the readings simply and intuitively (the PM1/PM2.5/PM10 readings automatically switch every 5s).

Portable CO2 Detector

The portable detector the size of a palm is easy to carry and can detect the gas quality in bedrooms, living rooms, kitchens, offices, cars, schools, hotels, campgrounds, and other environments. The data can indirectly understand the presence of second-hand smoke and mold, which will send out an alarm for your health. The portable detector has an independent power supply circuit board inside, which can be used for 12 hours without charging. 

Simple Operation And Service

Just one-button operation to switch on/off, with a detailed instruction manual, in addition, if you have any questions about this products and services, please feel free to contact  any time, always committed to providing you with quality products and services!

3. CO2 Monitor, CURCONSA 3-in-1 CO2 Detector with Ambient Temperature and Humidity

CO2 Monitor, CURCONSA 3-in-1 CO2 Detector with Ambient Temperature and Humidity, 400~5000 ppm, 2400 mAh Rechargeable Lithium Battery, Air Quality Monitor Indoor Suitable for Bedroom, Office, Car

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CO2 Monitor, CURCONSA 3-in-1 CO2 Detector with Ambient Temperature and Humidity, 400~5000 ppm, 2400 mAh Rechargeable Lithium Battery, Air Quality Monitor Indoor Suitable for Bedroom, Office, Car. The CURCONSA CO2 monitor detects levels of carbon dioxide in the air. This device is suitable for use in homes and offices as well as cars. It features a non-contact laser sensor that can detect CO2 levels from 0 to 5000 PPM (parts per million) in just one second! The CURCONSA CO2 monitor also comes with an ambient temperature sensor and humidity sensor that displays the temperature and humidity levels inside your home or office.

Essentials For The Home

The CURCONSA CO2 monitor is a professional device for detecting carbon dioxide concentration. You can test the CO2 concentration indoors quickly and accurately using this device. In addition to CO2 measuring function, the high-precision thermometer and hygrometer can also be used to monitor indoor temperature and humidity in real time. In winter, CURCONSA CO2 detector is an indispensable device at home or office.

Co2 Sensor With High Precision

The PAS 5500 series is a high-end air quality monitor with non-dispersive infrared technology (NDIR). The system offers a full temperature range correction, high measurement accuracy, fast response time and resolution up to 1 ppm. The measuring range is from 0 to 5000 ppm. The PAS 5500 series features easy-to-use software and an intuitive user interface for quick configuration, setup and operation.

Humanized Design

The indoor air co2 monitor has two types of air quality warnings, namely a three-color LED indicator light and a facial expression display, which makes the air quality more intuitive. Rechargeable lithium battery with a capacity of 2400 mAh, standby for 18 hours , supports USB charging and battery indicator. Indoor Air Quality Monitor is a lightweight device that can be used anywhere, at home or at work. It provides accurate data on air quality so that you can take measures to improve it.

Stylish Appearance

CO2 detector is a kind of product to monitor the concentration of carbon dioxide in the air. It can detect the carbon dioxide in the air and send an alarm when the concentration exceeds a certain value, so it is widely used in various places such as living room, bedroom, baby room, meeting room, library and other various places. It can be used for indoor detection of CO2 concentration from 0 ppm to 5000 ppm. It also has a waterproof design, which makes it suitable for outdoor use as well.

What You Get

CO2 monitor * 1; user manual * 1; USB cable * 1. CO2 detector has a 12-month guarantee and lifetime technical support. If you have any problems with the goods you receive, please contact the support team as soon as possible. They serve you wholeheartedly.  Provide you with the most competitive price and best service.

4. GZAIR Indoor CO2 Meter

GZAIR CO2 Data Logger Monitor, Wall-Mounted Carbon Dioxide Detector, IAQ CO2 Detector, NDIR Sensor, Temperature and Humidity, 0~5000ppm Range (CO2 Detection Human/Plant Mode)

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GZAIR Indoor CO2 Meter, Data Logger, Wall Mountable Carbon Dioxide Detector, Air Quality Monitor, NDIR Sensor, Temperature and Relative Humidity, 0~5000ppm Range. The GZAIR CO2 sensor is an indoor air quality monitor that measures carbon dioxide (CO2) levels in the air. It uses Non-Dispersive Infrared (NDIR) technology to detect carbon dioxide concentrations in the air at a rate of 1 reading every 6 minutes,

Accurate Detection

A High-Precision NDIR sensor is adopted in the detector. It works quickly, stably, and won’t be affected by temperature or other conditions than outdated Chemosensor. The detector is made of high-quality metal. The metal housing can avoid interference from other devices and protect the detector from damage.The metal housing has a good heat dissipation effect, which makes it more stable and durable in use.

Trending Data Logger

The EZCO2 is a portable, low-cost Data Logger for CO2. Built-in storage for continuous data logging, you can track trend data up to 7 days for CO2 concentrations, temperature, and humidity.  The small size and portability make it ideal for use in any indoor location.  And it displays the Max & Min value.

Two Detection Modes

Human mode detects whether you are in a healthy range. Plant mode detects whether the plant is growing in a good condition. Human mode uses your heart rate to check how well you feel. The app will calculate when you are stressed, relaxed, or energized. It allows you to enter your mood and activity level so that the app can provide feedback about how your mental state affects your physical health. Plant mode tracks the growth of plants by measuring their soil moisture levels and temperature. This information is used to determine if the plant needs water or sunlight.

Use On A Tabletop Or On A Wall

The GZAIR Indoor CO2 Meter is a digital CO2 meter that can be used to measure indoor concentrations of carbon dioxide (CO2), an important greenhouse gas. It can be used for home and office use, as well as for research or education. Two-use way, Wall-mounted or Tabletop design. You can set it on a stand or mount it on the wall with a mounting hole on the back.

Automatic & Manual Calibration

GZAIR Indoor CO2 Meter is an essential device for your indoor garden. It can help you maintain a healthy environment and make sure that your plants are getting enough CO2. This CO2 meter monitors the level of CO2 in the air, and sends you alerts when it’s too low or too high. It can even automatically calibrate itself! Offer two calibration modes, Manual Calibration, and Automatic Calibration. Calibrated it manually in the factory, and it can automatically calibrate during the detection.

5. CO2 Carbon Dioxide Air Quality Monitor, Pollution & Ventilation Meter

CO2 Carbon Dioxide Air Quality Monitor, Pollution & Ventilation Meter, Tester; Detect & Test Indoor Air Ventilation Levels with CO2 PPM Levels, Temperature and Humidity Sensor Readings on LED Screen

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Assess the quality of your air with an air quality monitor with CO2 readings. This carbon dioxide meter will accurately read the carbon dioxide levels anywhere and also help assess the amount of ventilation in any indoor space such as a restaurant or gym. Help ensure that indoor ventilation levels are at an adequate level to ensure the safety of everyone inside. If ventilation drawing outdoor air is inadequate or the number of people inside is too high, carbon dioxide levels indoors will increase beyond 500 ppm as occupants are exhaling carbon dioxide. CO2 Carbon Dioxide Air Quality Monitor, Pollution & Ventilation Meter, Tester; Detect & Test Indoor Air Ventilation Levels with CO2 PPM Levels, Temperature and Humidity Sensor Readings on LED Screen.

LED CO2 PPM Display

Assess the quality of your air and help keep the air fresh in any indoor space with this CO2 meter with a highly readable 2.8″ 320 x 240 resolution LED screen display. Use the CO2 Meter to monitor CO2 levels in your home or office, which is an indication of oxygen levels, temperature and humidity.

Safety For Everyone

Monitor public and private spaces for elevated CO2 levels caused by large groups of people exhaling CO2 in an enclosed area. CO2 or carbon dioxide serves as an accurate surrogate measure of risk for airborne pathogen transmission indoors. CO2 levels will rise as the number of people increases or ventilation decreases. Increase outdoor air ventilation to reduce CO2 levels and the risk of viral transmission in your indoor spaces.


In addition, check temperature and humidity levels while reading accompanying CO2 levels. A high-quality infrared thermometer will provide you with the most accurate readings on your reptile enclosure’s temperature. Infrared thermometers are more expensive than other types of thermometers, but they’re worth the extra cost if you plan to monitor your reptile’s temperature regularly.

Healthy Air & Healthy People

Maintain adequate ventilation by opening windows to draw in fresh air and reduce CO2 levels to 450-500 ppm or less. Air ventilation has been shown in studies to be more effective than even mask use in reducing the transmissibility of any airborne pathogen.

Original Design & Usa Based Support 

Gas and air quality hazards are a serious issue in today’s world, especially with the increasing number of people who have latex allergies or asthma. A 20+ page eBook on Gas and Air Quality Hazards will also be included. Collaborated with the provider who owns the design rights to this air quality detector, so you can rest assured that it has been thoroughly tested.

What To Look For In A Co2 Meter

Best Co2 Meter

If you want to buy the best co2 meter for your needs, you need to consider several factors before making your final decision on which model to buy. 

CO2 Accuracy

The best thing about a co2 meter is that it can give you an accurate reading of what’s in your home. This makes it easier for you to determine if there is something dangerous in the air or if there is anything wrong with your heating system. You can also use it to check how well your furnace filters are working and see if they need to be cleaned or replaced.

Ease of Use

The ideal co2 meter should be easy to set up and should provide quick access to current air quality readings as well as longer-term trends and averages (for many air pollutants, trends can be more illuminating than isolated readings). The sensor should be easy to replace if it becomes damaged or needs replacement.


It’s important to choose a co2 meter that will provide you with a thorough, clear reading of your home’s environment. a meter that measures small particulate matter (ideally PM2.5) and VOCs6 will get you well on your way toward understanding the quality of the air in your home. Those two measurements are extremely important to maintaining healthy air conditions. A meter that provides humidity, CO2, temperature, and air pressure measurements will inform you even further.


How much are you willing to spend on a co2 meter? This is one of the most important factors when buying a CO2 meter  and will determine what kind of product you can get for your money.


A co2 meter will take up too much space, but if you want to test air quality on the go or in multiple locations, a handheld, battery-powered device that provides real-time readouts is an excellent option. However, it may come at the cost of a detailed display or sophisticated design. On the other hand, a device designed to stay in one place, say, on the wall or a tabletop, may be a little more aesthetically pleasing, if a little larger.


How Does A Co2 Meter Work?

A CO2 meter measures the concentration of CO2 in the air in parts per million (ppm). When there is too much CO2 in a room, it can cause health problems such as headaches, tiredness and poor sleep quality due to increased breathing rates during sleep resulting from poor ventilation. This can also lead to poor concentration levels and reduced productivity at work or school due to lack of oxygen intake when sleeping at night.

Why Measure Co2?

It is important that rooms in which several people are present for a long period of time are well ventilated. When CO2 levels are high in certain rooms, this means that the brain is receiving less oxygen than it should. A CO2 level that is too high can lead to headaches, poor concentration, worsening allergies and a faster spread of viruses such as the coronavirus. In short, this creates an unhealthy living environment and then CO2 can be a cause of health problems. To prevent this, the installation of a CO2 meter is a good solution. This allows the air quality to be measured and an unhealthy living environment to be prevented. But how does a CO2 meter work exactly? A CO2 monitor gives an accurate indication of the amount of carbon dioxide in the air in parts per million. This meter will sound an alarm when there is a dangerously high concentration of CO2 in the room.

Can You Check Co2 At Home?

Yes, you can. There are a number of different ways to check the CO2 level in your aquarium. The most common is to use a CO2 meter. Carbon dioxide is a colorless, odorless gas that occurs naturally in the environment. Besides being produced by humans, carbon dioxide is also exhaled by animals. Plants and animals are constantly producing and consuming carbon dioxide — it’s a vital part of life on Earth. But too much carbon dioxide can lead to environmental problems and even death. To test the levels of carbon dioxide in your home or business, you’ll need a CO2 meter.

Final Word

Ventilation is becoming increasingly important, especially as we insulate our homes better. Therefore, monitoring the indoor climate is essential to creating a healthy environment. A co2 meter offers the solution. It continuously measures CO2 levels in the air, and notifies you when they are getting too high, enabling you to improve your indoor climate even before it starts becoming unhealthy.

A carbon dioxide meter makes it possible to monitor indoor CO2 levels continuously and at any time of day or night. The device provides an accurate measurement of carbon dioxide in the air so that you can take action if necessary to improve your indoor climate.






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