Best Smart Home CO2 Monitors

Smart home integration transforms a CO2 monitor from a passive display into an active part of your home automation. When your CO2 monitor connects to your smart home platform, you can set up automations that turn on a fan, open smart vents, or send a notification when CO2 exceeds a threshold. Platforms like Home Assistant, Apple HomeKit, and Amazon Alexa all support various CO2 monitors, though compatibility varies significantly by brand. WiFi-connected monitors also provide the benefit of cloud dashboards where you can review historical trends, set alerts, and monitor air quality remotely. These are the top monitors that play well with smart home ecosystems.

31 monitors rankedUpdated March 2026
1

uHoo Aura

Price: $330
Accuracy: ±50 ppm
Sensor: NDIR
CO2TemperatureHumidityVOCPM2.5+4 more
2

Airthings Space Pro

Price: $300
Accuracy: ±50 ppm
Sensor: NDIR
CO2TemperatureHumidityVOCPM2.5+3 more
3

Airthings View Plus

Price: $300
Accuracy: ±50 ppm
Sensor: NDIR
CO2TemperatureHumidityRadonVOC+2 more
4

Awair Omni

Price: $400
Accuracy: ±50 ppm
Sensor: NDIR
CO2TemperatureHumidityVOCPM2.5+2 more
5

AirGradient ONE

Price: $150
Accuracy: ±50 ppm
Sensor: NDIR
CO2PM2.5TemperatureHumidityVOC+1 more
6

Airthings Wave Plus

Price: $230
Accuracy: ±50 ppm
Sensor: NDIR
CO2TemperatureHumidityRadonVOC+1 more
7

Kaiterra Sensedge Mini

Price: $700
Accuracy: ±30 ppm
Sensor: NDIR
CO2PM2.5TemperatureHumidityVOC+1 more
8

Qingping Air Monitor

Price: $100
Accuracy: ±75 ppm
Sensor: NDIR
CO2PM2.5PM10TemperatureHumidity
9

Renogy DERA Indoor Air Quality Monitor

Price: $110
Accuracy: ±75 ppm
Sensor: NDIR
CO2PM2.5TemperatureHumidityVOC
10

Huma-i HI-150

Price: $130
Accuracy: ±75 ppm
Sensor: NDIR
CO2PM2.5VOCTemperatureHumidity
11

Edimax AI-2002W

Price: $175
Accuracy: ±75 ppm
Sensor: NDIR
CO2TemperatureHumidityPM2.5PM10
12

Awair Element

Price: $200
Accuracy: ±75 ppm
Sensor: NDIR
CO2TemperatureHumidityVOCPM2.5
13

IQAir AirVisual Pro

Price: $500
Accuracy: ±50 ppm
Sensor: NDIR
CO2PM2.5TemperatureHumidityAQI
14

Eve Room

Price: $100
Accuracy: ±75 ppm
Sensor: NDIR
CO2TemperatureHumidityVOC
15

Netatmo Smart Indoor Air Quality Monitor

Price: $120
Accuracy: ±50 ppm
Sensor: NDIR
CO2TemperatureHumidityNoise
16

AirGradient Open Air

Price: $130
Accuracy: ±50 ppm
Sensor: NDIR
CO2PM2.5TemperatureHumidity
17

Venta LP60 WiFi

Price: $190
Accuracy: ±75 ppm
Sensor: NDIR
CO2TemperatureHumidityPM2.5
18

Aranet Aranet4 Home

Price: $200
Accuracy: ±50 ppm
Sensor: NDIR
CO2TemperatureHumidityAtmospheric Pressure
19

Kaiterra Laser Egg+ CO2

Price: $200
Accuracy: ±50 ppm
Sensor: NDIR
CO2PM2.5TemperatureHumidity
20

Aranet Aranet4 Pro

Price: $250
Accuracy: ±30 ppm
Sensor: NDIR
CO2TemperatureHumidityAtmospheric Pressure
21

Testo 160 IAQ

Price: $750
Accuracy: ±50 ppm
Sensor: NDIR
CO2TemperatureHumidityAtmospheric Pressure
22

PJRC CO2 Gadget DIY Kit

Price: $45
Accuracy: ±50 ppm
Sensor: NDIR
CO2TemperatureHumidity
23

Qingping Air Monitor Lite

Price: $60
Accuracy: ±75 ppm
Sensor: NDIR
CO2TemperatureHumidity
24

Thirdreality Smart CO2 Sensor

Price: $60
Accuracy: ±75 ppm
Sensor: NDIR
CO2TemperatureHumidity
25

Yeelight YLCG01YL CO2 Sensor

Price: $75
Accuracy: ±75 ppm
Sensor: NDIR
CO2TemperatureHumidity
26

INKBIRD IAM-T1

Price: $80
Accuracy: ±75 ppm
Sensor: NDIR
CO2TemperatureHumidity
27

GZAIR Model B

Price: $85
Accuracy: ±75 ppm
Sensor: NDIR
CO2TemperatureHumidity
28

ThermoPro TP-65A CO2

Price: $90
Accuracy: ±75 ppm
Sensor: NDIR
CO2TemperatureHumidity
29

SAF Aranet4 Compatible Probe

Price: $180
Accuracy: ±50 ppm
Sensor: NDIR
CO2TemperatureHumidity
30

CO2Meter RAD-0501

Price: $300
Accuracy: ±30 ppm
Sensor: NDIR
CO2TemperatureHumidity
31

Testo 440 CO2 Kit

Price: $900
Accuracy: ±50 ppm
Sensor: NDIR
CO2TemperatureHumidity

Buying Tips: Best Smart Home CO2 Monitors

  • 1

    Check specific platform compatibility before buying. Not all WiFi monitors support HomeKit, and some only work with their own proprietary app.

  • 2

    Thread and Zigbee monitors like the Eve Room offer local smart home control without relying on cloud servers, which means faster response times and better privacy.

  • 3

    For Home Assistant users, monitors with open APIs or MQTT support (like AirGradient) provide the most flexible integration options.

  • 4

    Consider placement relative to your WiFi router. Some monitors have weak WiFi radios and may lose connectivity in rooms far from the router.

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