CO₂ Meters – Top Pick of 2024

High levels of carbon dioxide (CO₂) are dangerous and in closed spaces they must be controlled, that is why there are CO₂ level meters in the air.

Humans, like other animals, when we breathe we breathe in the air absorbing oxygen (O₂) and expel carbon dioxide (CO₂) resulting from the body’s metabolic mechanisms.

Places where a large number of people remain, with insufficient ventilation, tend to increase carbon dioxide levels, so they must be monitored with CO₂ meters to take measures before reaching dangerous levels.

The best selection of CO₂ detectors for 2024

To help you choose the CO₂ detector that best suits your needs, here we show you the result of the selection that we have made of the best meters on the market.

If you need help & nbsp; to know what aspects you should look at when choosing an air quality meter take a look at our buying guide:

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    • Extech CO260
      Extech CO260 Medidor de CO2, CO2 para interiores de calidad de aire
      • Measurement record
      • CO measurement
      • CO2 measurement
      • Humidity level measurement
      • Colour: Verde
      • Material: Hawa
      • Hand meter
      • Use batteries

      725.04 €

    • PCE instruments PCE-7755
      PCE Instruments Medidor de CO2 portátil, medidor Temperatura y Humedad en Interiores PCE-7755
      • Temperature measurement
      • Colour: Yellow
      • Material: ABS
      • Humidity level measurement
      • CO2 measurement
      • Hand meter
      • Use batteries
      • Includes carrying case
    • Airthings 2930
      Airthings 2930 Wave Plus: monitor de radón y de la calidad del aire con detector de CO2, COV, presión de aire, humedad y temperatura
      • CO2 measurement
      • Use batteries
      • Humidity level measurement
      • Material: ABS
      • TVOC measurement
      • Temperature measurement
      • Colour: White
      • Smartphone connection

      224.14 €

    • Ductfit KleanSense
      Medidor calidad de aire interior profesional con sensores de CO2, PM2.5, conectividad Wifi, aplicación móvil y visualización Web KLEANSENSE
      • Temperature measurement
      • Material: ABS
      • Colour: White
      • Smartphone connection
      • CO2 measurement
      • PM2.5 measurement
      • Humidity level measurement
    • Aranet Home TDSPC003.001
      Aranet4 Home: sensor de calidad de aire interior inalámbrico para el hogar, la oficina o la escuela [CO2, temperatura, humedad y más] portátil
      • Smartphone connection
      • Warning alarm
      • Material: Plástico
      • CO2 measurement
      • Temperature measurement
      • Humidity level measurement
      • Colour: White

      210.53 €

    • Selva Air control 5000
      Medidor de CO2 con registrador de datos y alarma USB para un aire higiénico y monitorización de la concentración de CO2 para el hogar, la escuela, la oficina
      • Temperature measurement
      • Humidity level measurement
      • Warning alarm
      • Colour: White
      • Material: ABS
      • CO2 measurement
      • Measurement record
    • Gain express 7530
      GAIN EXPRESS Controlador de monitor IAQ de dióxido de carbono CO2 digital con función de relé Sonda de detección NDIR de cable de 4,5 m para casa verde, oficina, fábrica
      • CO2 measurement
      • Material: Plástico
      • Colour: Verde

      169.99 €

    • Forensics ‎7I-HYC0-U9OD
      FORENSICS Detector de O2 oxígeno y analizador | Alarmas de vibración, luz y Sonido | 0-30% O2
      • O2 measurement
      • Colour: Yellow
      • Rechargeable battery
      • Warning alarm
      • battery capacity: 1500 mAh
      • Temperature measurement
      • Material: Plástico
      • Hand meter
    • GH enterprise HAND AIR CO2
      HAND AIR CO2 - Medidor de calidad del aire - Detector anhídrido de carbono INDOOR AMBIENTOS cerrados
      • Colour: Black
      • Touch screen
      • Material: ABS
      • CO2 measurement
    • Camthon AB124
      CAMTHON Medidor CO2 homologado a tiempo real, Detector de CO2 profesional portátil, Sensor NDIR de CO2, Medidor Calidad Aire Interior/Exterior, Monitor de Temperatura/Humedad
      • Use batteries
      • Material: ABS
      • Rechargeable battery
      • Humidity level measurement
      • Colour: Black/silver
      • Temperature measurement
      • battery capacity: 3000 mAh
      • CO2 measurement
    • Trotec BZ30
      TROTEC Detector de calidad del aire (CO2) BZ30
      • CO2 measurement
      • Rechargeable battery
      • Can be hung on the wall
      • Use batteries
      • Temperature measurement
      • Colour: Verde
      • Warning alarm
      • Material: Plástico
    • Humai HI-150
      humai Black (HI-150) medidor portátil de la Calidad del Aire. Mide el CO2, COV, PM2.5, PM10, PM1.0, Temperatura y Humedad con gran precisión. Sensores fabricados en Suiza.
      • Touch screen
      • Temperature measurement
      • Colour: Black
      • Material: Plástico
      • Rechargeable battery
      • Humidity level measurement
      • TVOC measurement
      • PM2.5 measurement

      149 €

      20 €

      129 €

      13%
    • Netatmo ‎NHC-FR
      Netatmo - Medidor de calidad del aire - Sensores de temperatura, humedad, ruido y CO2, rosa, NHC-IT
      • CO2 measurement
      • Material: ABS
      • Smartphone connection
      • Temperature measurement
      • Humidity level measurement
      • Colour: Gold / pink

      122.02 €

    • Seben HT-2008
      Seben HT-2008 medidor de CO2 semáforo Ambiente con Pantalla LED XL para la medición del Aire Interior de dióxido de Carbono, Humedad y Temperatura
      • Humidity level measurement
      • Can be hung on the wall
      • Temperature measurement
      • Colour: Black
      • CO2 measurement
      • Material: Plástico
    • Delan ‎D-CO2
      Medidor de calidad de Aire Co2 pantalla grande
      • PM2.5 measurement
      • Material: Plástico
      • Humidity level measurement
      • CO2 measurement
      • Rechargeable battery
      • Warning alarm
      • Colour: Black
      • Temperature measurement
    • Brennenstuhl ‎1291500
      Brennenstuhl medidor de CO2 C2M L 4050 / Detector de dióxido de Carbono para controlar la Calidad del Aire (Detector de CO2 con Pantalla LED y señal de Alarma, Incl. batería Recargable y Cargador)
      • Temperature measurement
      • Material: ABS
      • Warning alarm
      • CO2 measurement
      • Use batteries
      • Colour: Black
      • Humidity level measurement
    • Temtop P600
      Temtop Monitor de Calidad del Aire Detector de Calidad del Aire de Mano Laser Paticle Detector Abeba Metros Exacta Verificación para PM2.5/PM10 TFT Color de Pantalla LCD P600
      • Use batteries
      • HCHO measurement
      • CO2 measurement
      • PM2.5 measurement
      • Colour: Green / orange
      • Rechargeable battery
      • Material: Plástico
      • TVOC measurement
    • TFA dostmann AIRCO2NTROL Coach CO2 Monitor
      TFA Dostmann AIRCO2NTROL Coach CO2 Monitor - 31.5009.02
      • CO2 measurement
      • Use batteries
      • Can be hung on the wall
      • Material: Plástico
      • Temperature measurement
      • Colour: White
      • Rechargeable battery
      • Humidity level measurement

      97 €

      5.72 €

      91.28 €

      6%
    • Abus CO2WM110 AirSecure
      Abus - Alarma de CO2
      • Humidity level measurement
      • Colour: White / black
      • Can be hung on the wall
      • CO2 measurement
      • Rechargeable battery
      • Use batteries
      • Warning alarm
      • Temperature measurement

      140.08 €

      51.16 €

      88.92 €

      37%
    • Seben HT-501
      Seben HT-501 Medidor de CO2 con Alarma, Detector dióxido de Carbono, Pantalla de Temperatura y Humedad, Rango de medición de 0 a 9999 ppm
      • Humidity level measurement
      • Use batteries
      • Temperature measurement
      • Colour: White / black
      • Rechargeable battery
      • Can be hung on the wall
      • Material: Plástico
      • Warning alarm
    • Aktech B096ZK7QD6
      AKTECH Medidor WIFI de CO2, Temperatura y Humedad. Alarma, Recargable, Ideal para comercios, hoteles y bares. Controle la calidad del aire en su hogar o establecimiento (Blanco)
      • CO2 measurement
      • Smartphone connection
      • Warning alarm
      • Material: ABS
      • Humidity level measurement
      • Colour: White
      • Temperature measurement
      • Rechargeable battery
    • Temper KCO2-METER
      Medidor de CO2 KCO2-METER
      • Colour: White / black
      • Use batteries
      • Material: PVC, ABS
      • Rechargeable battery
      • CO2 measurement
    • SHXN HSGAV
      SHXN Multifuncional Monitor de Calidad de Aire,Inteligente Detector de Calidad del Aire de CO2 Detector para HCHO TVOC PM2.5/10 con Pantalla LCD Colorida HSGAV
      • Material: ABS
      • Warning alarm
      • Colour: White
      • Rechargeable battery
      • battery capacity: 1000 mAh
      • Use batteries
      • HCHO measurement
      • CO2 measurement
    • Technoline WL1030
      Technoline WL1030 Co2 Medidor de dióxido de Carbono, Negro
      • Measurement record
      • Colour: Black
      • Material: Plástico
      • Temperature measurement
      • CO2 measurement
      • Humidity level measurement
    • Seben 1200P B
      Seben 1200P B Medidor y Monitor de CO2 con semáforo, Alarma acústica, Registrador de Datos para la medición de la Calidad del Aire
      • Colour: Black
      • CO2 measurement
      • Can be hung on the wall
      • Temperature measurement
      • Humidity level measurement
      • Warning alarm
      • Material: Plástico
    • Heiman HS3AQ
      Medidor de CO2 Interior Detector de Calidad del Aire Portátil Detector de Dióxido de Carbono Temperatura y Humedad con Luz Indicadora de 3 Colores y Pantalla de Resaltado,fácil calibración
      • Rechargeable battery
      • Touch screen
      • Humidity level measurement
      • Warning alarm
      • Material: ABS
      • battery capacity: 1600 mAh
      • CO2 measurement
      • Temperature measurement
    • Seben 1200P W
      Seben 1200P W Medidor y Monitor de CO2 con semáforo, Alarma acústica, Registrador de Datos para la medición de la Calidad del Aire
      • Colour: White
      • Warning alarm
      • Can be hung on the wall
      • Temperature measurement
      • Humidity level measurement
      • CO2 measurement
      • Material: Plástico
    • Netatmo NHC-EC
      Netatmo NHC-EC - Control de calidad de ambiente de tu hogar, aire interior, temperatura, humedad, sonido y CO2, Dorado Rosado, 4.5 x 4.5 x 15.5 cm
      • Warning alarm
      • Smartphone connection
      • Material: ABS
      • Colour: Gold / pink
      • Humidity level measurement
      • Temperature measurement
      • CO2 measurement

      119.99 €

      60 €

      59.99 €

      50%
    • Dioxcare PDF
      Dioxcare DX700 PDF, Medidor de CO2, Sensor NDIR Senseair S8 de Alta precisión con envío de Datos PDF al Ordenador, Detector de CO2, Temperatura y Humedad【Nueva Batería Mejorada 3000mAh】
      • Material: Plástico
      • Temperature measurement
      • Humidity level measurement
      • battery capacity: 3000 mAh
      • CO2 measurement
      • Measurement record
      • Use batteries
      • Colour: White
    • Chiciris ‎Eecookz40f2i7nm686
      Medidor de monitor de calidad del aire de carga USB, detector de comprobador preciso de CO2 para interiores 3 en 1, detector de gas de aire multifuncional Registro de valor en tiempo real para oficina
      • battery capacity: 1500 mAh
      • CO2 measurement
      • Material: ABS
      • Temperature measurement
      • Use batteries
      • Colour: White / black
      • Rechargeable battery
      • Humidity level measurement
    • Irishom CMF6182900068695QZ
      Irishom Medidor de Dióxido de Carbono,por Infrarrojos 400-5000Ppm Detector de CO2 Monitor de Calidad,del Aire Temperatura y Humedad Probador Montable,en La Pared Pantalla Grande Batería Incorporada
      • battery capacity: 2400 mAh
      • Material: ABS
      • Can be hung on the wall
      • Use batteries
      • Humidity level measurement
      • Warning alarm
      • Temperature measurement
      • Colour: Black
    • Temtop P10
      Temtop Monitor de Calidad del Aire Interior de PM2.5 y AQI, para Habitaciones (Dormitorios, Cocinas), Oficinas, Automóviles, Recargable P10
      • Material: ABS
      • Colour: White / black
      • Rechargeable battery
      • PM2.5 measurement
      • Use batteries
    • Ticdivision TDV0975
      Medidor CO2 monocroma
      • Use batteries
      • CO2 measurement
      • Material: ABS
      • Temperature measurement
      • Humidity level measurement
      • Colour: Blanco / Negro
      • Rechargeable battery
    • Technoline MA10402
      Technoline MA10402 - Monitor de Calidad de Aire, Color Blanco
      • Can be hung on the wall
      • Material: ABS
      • Humidity level measurement
      • Temperature measurement
      • Warning alarm
      • Colour: White
      • CO2 measurement
    • Festnight 500148615A1
      Festnight Detector de CO2 portátil para interiores Termohigrómetro multifuncional Detector de aire digital para el hogar Analizador inteligente de calidad del aire Monitor de contaminación del aire pa
      • Use batteries
      • battery capacity: 1200 mAh
      • Rechargeable battery
      • Temperature measurement
      • CO2 measurement
      • Material: PVC, ABS
      • Colour: White / black
      • Humidity level measurement
    • Festnight LH0216B
      Festnight Detector de CO2 portátil para interiores Termohigrómetro multifuncional Detector de aire digital para el hogar Analizador inteligente de calidad del aire Monitor de contaminación del aire pa
      • Temperature measurement
      • battery capacity: 1200 mAh
      • Colour: Black
      • CO2 measurement
      • Use batteries
      • Material: ABS
      • Humidity level measurement
      • Rechargeable battery
    • Lamptti POOC5IHWB83KPTNDVR
      Medidor CO2 Interiores, Calidad del Aire para formaldehído CO2 TVOC, dióxido Carbono, Detector Aire Multifuncional para el hogar/Oficina/automóvil, Datos en Tiempo Real
      • Material: ABS
      • Warning alarm
      • Temperature measurement
      • TVOC measurement
      • Colour: Black
      • battery capacity: 1200 mAh
      • Use batteries
      • CO2 measurement
    • Technoline WL1020
      Technoline WL1020 - Monitor de Calidad de Aire, Color Plateado y Blanco
      • Warning alarm
      • Material: ABS
      • Temperature measurement
      • Can be hung on the wall
      • Colour: White / silver
      • TVOC measurement
      • Touch screen
      • Humidity level measurement

      39.99 €

      10 €

      29.99 €

      25%
    • X-sense CO03B
      X-Sense Detector de Monóxido de Carbono (CO) con una Vida Útil de 10 Años, Alarma Reemplazable Alimentada por Batería y con Pantalla Digital, CO03B
      • Use batteries
      • Warning alarm
      • Material: ABS
      • CO measurement
      • Can be hung on the wall
      • Colour: White
    • Smartwares FGA-13031
      Smartwares FGA-13031 Detector de monóxido de Carbono – Vida útil de 10 años – Indicador de batería
      • Colour: White
      • Warning alarm
      • Material: ABS
      • Can be hung on the wall
      • Use batteries
      • CO measurement
    • Heiman HHJHA9
      HEIMAN Detector de monóxido de Carbono con Pantalla LCD, Certificado EN 50291, duración de la batería, 10 años de duración del Sensor, botón de Prueba (1)
      • Colour: White
      • Can be hung on the wall
      • Warning alarm
      • Use batteries
      • CO measurement
      • Material: ABS

    What are CO₂ detectors or meters?

    As its name indicates, a CO₂ meter is a device that measures the concentration of CO₂ in a certain place.
    It is usually used for measurements indoors, that is, inside constructions, whether in offices, restaurants, hospitals, gyms or houses.

    Measurements are not usually made outdoors because in an open environment the gases tend to disperse, distributing according to the typical concentration, therefore, concentrations do not usually occur.

    CO₂ Meters - Top Pick of 2021
    CO2 meter

    The units with which this measurement is given are ppm (parts per million) or mg/l (milligrams / liter) where the equivalence between both units is 1 ppm = 1 mg/l.

    How do carbon dioxide meters work?

    The most widespread technology is infrared without dispersion or NDIR, which is used by most manufacturers, this consists of taking advantage of the fact that CO₂ absorbs infrared light .

    Then the meter emits, through a diode, infrared light that is then bounced back to the meter which measures the difference between the amount of infrared light emitted and received resulting from the calculation a concentration of CO₂ in the environment .

    CO₂ Meters - Top Pick of 2021
    Meter operation

    From this calculation a fairly accurate measurement of the amount of CO₂ is achieved.
    Some more sophisticated devices use intelligent algorithms to make an even more exact approximation.

    What are CO₂ detectors for?

    CO₂ detectors are used to monitor carbon dioxide levels in places where high concentrations can occur.

    As we have already mentioned previously, the level of CO₂ that exists in the air, in a closed space, can be the result of the amount of air exhaled by the people who are in the place.

    A high concentration of CO₂ is harmful, both because it is a harmful element if we breathe it , and because it occupies the space that other elements such as oxygen (O₂) that we need would occupy.

    CO₂ Meters - Top Pick of 2021
    Example of a high CO2 measurement

    In these cases it is advisable to open the windows so that the air can circulate and it is renewed, obtaining the correct proportion of breathable elements.

    These devices are considered security elements and are known as CO₂ alarm systems, CO₂ sensors or CO₂ meters and work by sending an acoustic or visual signal when they detect high levels of pollution concentrated in a space.

    CO₂ detectors to combat COVID-19

    According to the latest studies on COVID-19 and the new variants, it has been determined that this can be found in suspension in the air with the higher the risk of contagion the higher its concentration.

    We know that the virus is transmitted into the air when an infected person exhales the air inside, leaving it in suspension, being able to be breathed in by other people.

    CO₂ Meters - Top Pick of 2021
    The virus is transmitted through the air

    Infection is not usually caused by breathing in a few virus particles, but by breathing in or getting enough of them into the body. This is known as viral load.

    Currently, there are no devices accessible to the general public capable of measuring the existence of viruses in the air, and specifically COVID-19, but we can measure the concentration of CO₂ that has been issued by the people who are in the place.

    CO₂ Meters - Top Pick of 2021
    CO2 concentration meter

    Making a correlation between exhaled air (CO₂ concentration) and the amount of virus that can be found in suspension, we can quickly see that the higher the amount of CO₂, the greater the risk of contagion.

    Starting from this premise, we can assert that we will reduce the risk of contagion if we maintain low levels of CO₂ in the environment. For this purpose, it is advisable to install carbon dioxide detectors in closed spaces that will be crowded, such as restaurants.

    Types of CO₂ meters

    There are several technologies, although the most widespread, and also the most modern, is the infrared without dispersion.
    This is the technology used to read or measure the concentration of carbon dioxide. carbon (CO₂) but they can also incorporate other technologies, both for data management and connectivity, facilitating their management and utility.

    There are models that allow us to read continue storing the data in a memory, either internal or on an SD card and then download them.

    Obtaining this data can be done either by removing the SD card, by means of a USB cable connection to a computer or wirelessly either by wifi or bluetooth.

    Other CO₂ meters allow continuous data transmission over LoRaWAN being able to be installed permanently in a room.

    The formats with which this data can be obtained can be diverse, such as PDF or CSV.

    Most of these devices work with a internal rechargeable battery or batteries, which can last for several months.

    Most detectors are small and portable, made of durable materials and even protected against humidity, making it easier for us to measure in all kinds of places and environments.

    When is it important to use CO₂ detectors?

    CO₂ is a harmful element for health if it is breathed in for a long time, therefore, it will be necessary to make periodic measurements less or more frequently < strong> in closed or poorly ventilated places where the concentration of people is high or they remain in the place for a long time, especially if it is children or elderly people such as schools or nursing homes.

    There are many office and apartment buildings, especially if they are tall, that lack windows that can be opened, in many cases for security reasons, both personal and structural of the building itself.

    These buildings must constantly renew the air by means of ventilation circuits with forced air.

    For this reason, this type of building must perform a real-time measurement of gas concentrations, including CO₂.

    Here we show a table with different levels of CO₂ concentration:

    Normal level outdoors350 a 450 ppm
    Acceptable level indoors600 a 800 ppm
    Tolerable level indoors1.000 ppm
    CO₂ Meters - Top Pick of 2021
    Acceptable concentration level vs. high level

    If the tolerance level of 1000 ppm is exceeded, measures should be taken to correct said concentration in order to avoid serious health problems.

    Where to install a CO₂ detector?

    When we decide to install a CO₂ detector or meter in a room, it is because we already know that concentrations of carbon dioxide can occur in that place.

    To choose the place within the room, where to place the detector, we must check that it is as close to the area where a higher concentration of CO₂ can occur.

    We must also check that there is no obstruction between the concentration zone and the measurement zone, as this would produce an erroneous reading.

    We will avoid placing it in an area where there may be leaks of possible CO₂ concentrations because we would not have an accurate reading.

    Even if we install a carbon dioxide detector, we must ensure that the site is well ventilated to avoid possible concentrations.

    How to choose a CO₂ meter?

    If you are thinking of acquiring a CO₂ meter, here we detail a series of characteristics that you should take into account when choosing one that fits your needs.

    FunctionalityYou should know that there are meters that, in addition to measuring CO₂ levels, also measure other elements that can be as much or more harmful.
    Many also show the temperature and relative humidity of the environment with which you will have more information to be able to act with more data.
    Where it will be usedBefore knowing the measuring capacity of the device, we must know where it will be used.
    In many cases they will be meters that are installed permanently and, therefore, we must know if their placement and dimensions of the room will allow you to make a correct reading of the CO₂ concentration based on their reading capacity.
    TechnologyIn the market you can find a whole range of meters, from some that have simple sensors to others that use more sophisticated detectors, with intelligent algorithms, for greater precision in their measurement.
    Others also have Wi-Fi connectivity, bluetooth or even the ability to record continuous measurements for a period of time that we can later view on a computer. Thus we can study the evolution in the concentration of the element or the result of applying measures for its correction.
    If you are not sure that you want a simple one, we recommend that you look for one that provides you with greater benefits or versatility so that you can face future needs.
    Fabrication materialWe must bear in mind that most CO₂ meters are going to be portable to be able to carry from one place to another and make measurements in different places.
    This implies that it will be subjected to more demanding conditions, it may suffer chasers, blows, spillage of liquids, etc.
    We must choose products that are made with good materials to achieve greater durability.
    BudgetBefore we start looking at products we must know what budget we have, a maximum price and even a minimum price, to choose a meter that is within this range.
    It is not always true that the most expensive product is the best, since sometimes its characteristics exceed what we need or we are simply paying for the brand.
    We can find good quality CO₂ meters at an affordable price for any pocket.

    Now you know everything you need to find your air quality meter from the selection we have made for this 2022.

    Have a nice shopping ?!

    Are you looking for an air purifier?

    An air purifier will help us keep the air clean, free of pathogens, although we must bear in mind that a high concentration of CO₂ will not be eliminated with the use of a purifier.

    The best way to eliminate excess CO₂ or any other gaseous element is by opening windows for room ventilation.

    But a purifier can help us to capture elements in suspension in the air benefiting from its use being very positive for avoiding colds or allergies.

    Purificadores de aire

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