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Side-by-side comparison · Updated for 2026

Smart Air Quality Monitors with CO2 sensor

Looking for air quality monitors with co2 support? Compare features, specs, and top-rated models to find the best one for your smart home in 2026.

As an Amazon Associate I earn from qualifying purchasesIndependent · Not sponsored
18
Products
12
Brands
32%
Top discount
Filters:All
Title
  • Basic Information
  • Rating
  • Reviews
  • Launch Year
  • Warranty
  • Model
  • Company
  • Brand
  • Headquarters
  • Size & Materials
  • Weather Resistance
  • Dimensions
  • Weight
  • Power
  • Wired
  • Battery Type
  • Battery Life
  • Connectivity
  • 2.4 GHz WiFi
  • 5 GHz WiFi
  • Ethernet
  • Bluetooth
  • Z-Wave
  • Zigbee
  • Thread Protocol
  • Other
  • Display
  • Screen
  • Screen Type
  • Color Screen
  • Touch Screen
  • Screen Size
  • Screen Resolution
  • Integrations
  • Google Home
  • Alexa
  • Apple HomeKit
  • Samsung SmartThings
  • Home Assistant
  • Matter
  • Sensors
  • TVOC
  • PM0.1
  • PM0.3
  • PM1
  • PM2.5
  • PM10
  • CO
  • CO2
  • NOx
  • Radon
  • Temperature
  • Humidity
  • Atmospheric Pressure
  • Ambient Light
  • UV
  • Occupancy
  • Ambient Noise
  • Alerts
  • Temperature Alerts
  • Humidity Alerts
  • Air Quality Alerts
  • Low Battery Alerts
  • Features
  • Automations
  • History Records
  • Aranet4 HOME
    Best Seller
    Aranet

    Aranet4 HOME

    €219.00
    BUY NOWCheck price
    • 4.7
    • 1,816
    • 2019
    • 2 years
    • TDSPC003.001
    • Aranet
    • Latvia
    • NO
    • 2.8 × 2.8 × 0.9 in
      (70 × 70 × 24 mm)
    • 3.7 oz
      (104 g)
    • NO
    • 2x AA
    • 4 years
    • NO
    • NO
    • NO
    • YES
    • NO
    • NO
    • NO
    • NO
    • YES
    • E-Ink
    • NO
    • NO
    • ?
    • ?
    • NO
    • NO
    • NO
    • NO
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • NO
    • NO
    • YES
    • YES
    • YES
    • NO
    • NO
    • NO
    • NO
    • YES
    • YES
    • YES
    • YES
    • YES
    • YES
  • Third Reality Smart Air Quality Sensor
    Third Reality

    Smart Air Quality Sensor

    $49.99
    BUY NOWCheck price
    • 4.6
    • -
    • 2026
    • ?
    • P1AQSA1
    • Third Reality
    • China
    • NO
    • 2.6 × 1.4 × 3.4 in
      (67 × 36 × 86.5 mm)
    • 1.8 oz
      (50 g)
    • USB
    • -
    • -
    • NO
    • NO
    • NO
    • NO
    • NO
    • Zigbee Hub required
    • NO
    • NO
    • NO
    • -
    • -
    • -
    • -
    • -
    • Smart Bridge MZ1 required
    • YES
    • Smart Bridge MZ1 required
    • YES
    • YES
    • Smart Bridge MZ1 required
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • NO
    • NO
    • YES
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • YES
    • YES
    • -
    • YES
    • YES
  • 27% OFF
    Ecobee Smart Thermostat Premium
    Top Rated
    Ecobee

    Smart Thermostat Premium

    $149.63$204.97
    BUY NOWCheck price
    • 4.5
    • 860
    • 2022
    • 3 years
    • EB-STATE6-01
    • Ecobee
    • Canada
    • NO
    • 4.1 × 4.1 × 1 in
      (103.89 × 103.89 × 25.9 mm)
    • 1.4 lb
      (630 g)
    • YES
    • -
    • -
    • YES
    • YES
    • NO
    • YES
    • NO
    • NO
    • NO
    • NO
    • YES
    • LCD
    • YES
    • YES
    • 4"
    • 540 x 540 px
    • YES
    • YES
    • YES
    • YES
    • YES
    • NO
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • NO
    • NO
    • YES
    • YES
    • NO
    • NO
    • NO
    • YES
    • NO
    • YES
    • NO
    • YES
    • -
    • YES
    • YES
  • 22% OFF
    GoveeLife Smart Air Quality Monitor CO2 H5140
    Govee

    Smart Air Quality Monitor CO2 H5140

    $69.99$89.99
    BUY NOWCheck price
    • 4.5
    • 235
    • 2025
    • 1 year
    • H5140
    • Govee
    • China
    • NO
    • 5.6 × 2.7 × 3 in
      (14.2 × 6.8 × 7.6 cm)
    • 5.3 oz
      (150 g)
    • USB-C
    • -
    • -
    • YES
    • NO
    • NO
    • YES
    • NO
    • NO
    • NO
    • NO
    • YES
    • LED
    • NO
    • NO
    • 4.82 inch
    • ?
    • YES
    • YES
    • NO
    • NO
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • NO
    • NO
    • YES
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • YES
    • YES
    • -
    • YES
    • YES
  • SONOFF SAWF-08P Air Quality Monitor
    Sonoff

    SAWF-08P Air Quality Monitor

    $49.90
    BUY NOWCheck price
    • 4.3
    • 169
    • 2025
    • ?
    • SAWF-08P
    • Sonoff
    • China
    • NO
    • 2.4 × 3.9 × 5.5 in
      (60 × 100 × 140 mm)
    • ?
    • YES
    • -
    • -
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • -
    • YES
    • LCD
    • NO
    • NO
    • ?
    • ?
    • YES
    • YES
    • YES
    • YES
    • YES
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • NO
    • NO
    • YES
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • YES
    • YES
    • -
    • YES
    • 1 year
  • 20% OFF
    Airthings Wave Plus
    Airthings

    Wave Plus

    $199.99$249.99
    BUY NOWCheck price
    • 4.2
    • 3,230
    • 2018
    • 5 years
    • 2930
    • Airthings
    • Norway
    • NO
    • 4.8 × 4.8 × 1.4 in
      (121 × 121 × 36 mm)
    • 7.7 oz
      (219 g)
    • NO
    • 2x AA
    • 1.5 years
    • NO
    • NO
    • NO
    • YES
    • NO
    • NO
    • NO
    • YES
    • NO
    • -
    • NO
    • NO
    • -
    • -
    • YES
    • YES
    • NO
    • NO
    • YES
    • NO
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • NO
    • YES
    • YES
    • YES
    • YES
    • NO
    • NO
    • NO
    • NO
    • YES
    • YES
    • YES
    • YES
    • ?
    • YES
  • 32% OFF
    Airthings Wave Enhance
    Airthings

    Wave Enhance

    $109.23$159.99
    BUY NOWCheck price
    • 4.2
    • 44
    • 2024
    • 5 years
    • 322
    • Airthings
    • Norway
    • NO
    • 3.1 × 3.1 × 1.1 in
      (80 × 80 × 27 mm)
    • 3.5 oz
      (98 g)
    • NO
    • 3x AA
    • 14 months
    • NO
    • NO
    • NO
    • YES
    • NO
    • NO
    • NO
    • YES
    • NO
    • -
    • -
    • -
    • -
    • -
    • YES
    • YES
    • NO
    • NO
    • YES
    • NO
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • NO
    • NO
    • YES
    • YES
    • YES
    • YES
    • NO
    • NO
    • YES
    • YES
    • YES
    • YES
    • YES
    • YES
    • YES
  • 19% OFF
    Airthings View Plus
    Airthings

    View Plus

    $265.95$329.99
    BUY NOWCheck price
    • 4.0
    • 1,971
    • 2021
    • 5 years
    • 2960
    • Airthings
    • Norway
    • NO
    • 6.7 × 3.5 × 1.3 in
      (170 × 90 × 33 mm)
    • 12.7 oz
      (360 g)
    • USB-C
    • 6x AA
    • 2 years
    • YES
    • NO
    • NO
    • YES
    • NO
    • NO
    • NO
    • YES
    • YES
    • E-Ink
    • NO
    • NO
    • 2.9"
    • 296 x 128 px
    • YES
    • YES
    • NO
    • NO
    • YES
    • NO
    • YES
    • NO
    • NO
    • NO
    • YES
    • NO
    • NO
    • YES
    • NO
    • YES
    • YES
    • YES
    • YES
    • NO
    • NO
    • NO
    • NO
    • YES
    • YES
    • YES
    • YES
    • YES
    • YES
  • IQAir AirVisual Pro
    IQAir

    AirVisual Pro

    $329.99
    BUY NOWCheck price
    • 4.0
    • 484
    • 2017
    • 1 year
    • ?
    • IQAir
    • Switzerland
    • NO
    • 0.7 × 3.2 × 3.9 in
      (18 × 82 × 100 mm)
    • ?
    • Micro USB
    • Built-in
    • 4 hours
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • LCD
    • YES
    • NO
    • 5"
    • ?
    • NO
    • NO
    • NO
    • NO
    • YES
    • NO
    • YES
    • NO
    • NO
    • YES
    • YES
    • YES
    • NO
    • YES
    • NO
    • NO
    • YES
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • NO
    • YES
    • YES
  • SwitchBot Meter Pro (CO2 Monitor)
    SwitchBot

    Meter Pro (CO2 Monitor)

    $79.99
    BUY NOWCheck price
    • 3.8
    • 20
    • 2024
    • 1 year
    • ?
    • SwitchBot
    • Hong Kong
    • NO
    • 3.6 × 3.1 in
      (91 × 78 mm)
    • ?
    • USB-C
    • 2x AA
    • 1 year
    • SwitchBot Hub required
    • NO
    • NO
    • YES
    • NO
    • NO
    • NO
    • NO
    • YES
    • LCD
    • NO
    • NO
    • 3.6"
    • ?
    • YES
    • YES
    • YES
    • YES
    • YES
    • SwitchBot Hub required
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • NO
    • NO
    • YES
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • SwitchBot Hub required
    • SwitchBot Hub required
    • NO
    • YES
    • YES
    • YES
  • Qingping Air Monitor Lite
    Qingping

    Air Monitor Lite

    $76.00
    BUY NOWCheck price
    • 3.6
    • 706
    • 2021
    • ?
    • CGDN1
    • Qingping
    • China
    • NO
    • 2.5 × 2.2 × 1.8 in
      (64 × 55 × 46 mm)
    • 5 oz
      (142 g)
    • YES
    • Built-in
    • ?
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • OLED
    • NO
    • YES
    • ?
    • ?
    • NO
    • NO
    • YES
    • NO
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • YES
    • NO
    • YES
    • NO
    • NO
    • YES
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • ?
    • ?
    • ?
    • ?
    • YES
    • YES
  • Qingping Air Quality Monitor Gen 2
    Qingping

    Air Quality Monitor Gen 2

    $149.99
    BUY NOWCheck price
    • 3.5
    • 207
    • 2024
    • ?
    • CGS2
    • Qingping
    • China
    • NO
    • ?
    • ?
    • YES
    • Built-in
    • 3 hours
    • YES
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • IPS
    • YES
    • YES
    • 4"
    • 254 PPI
    • ?
    • NO
    • NO
    • NO
    • ?
    • NO
    • YES
    • NO
    • NO
    • NO
    • YES
    • YES
    • NO
    • YES
    • NO
    • NO
    • YES
    • YES
    • NO
    • YES
    • NO
    • NO
    • YES
    • ?
    • ?
    • ?
    • ?
    • ?
    • YES
  • IQAir AirVisual Outdoor
    IQAir

    AirVisual Outdoor

    $299.99
    BUY NOWCheck price
    • 3.2
    • 67
    • 2021
    • 1 year
    • ?
    • IQAir
    • Switzerland
    • YES (Outdoor)
    • 6.4 × 2.7 × 8 in
      (162 × 69 × 202 mm)
    • ?
    • YES
    • -
    • -
    • YES
    • NO
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • -
    • -
    • -
    • -
    • -
    • NO
    • NO
    • NO
    • NO
    • YES
    • NO
    • NO
    • NO
    • NO
    • YES
    • YES
    • YES
    • NO
    • YES
    • NO
    • NO
    • YES
    • YES
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • NO
    • YES
    • YES
  • AirGradient ONE
    Best Seller
    AirGradient

    AirGradient ONE

    $230.00
    BUY NOWCheck price
    • -
    • -
    • 2023
    • 1 year
    • I-9PSL
    • AirGradient
    • Thailand
    • NO
    • 5.1 × 5.1 × 1.4 in
      (130 × 130 × 35 mm)
    • 12.3 oz
      (350 g)
    • USB-C
    • -
    • -
    • YES
    • NO
    • NO
    • YES
    • NO
    • NO
    • NO
    • NO
    • YES
    • OLED
    • NO
    • NO
    • 1.3"
    • 128 x 64 px
    • NO
    • NO
    • NO
    • NO
    • YES
    • NO
    • YES
    • NO
    • YES
    • YES
    • YES
    • YES
    • NO
    • YES
    • YES
    • NO
    • YES
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • YES
    • YES
    • -
    • YES
    • YES
  • AirGradient Open Air
    AirGradient

    AirGradient Open Air

    $190.00
    BUY NOWCheck price
    • -
    • -
    • 2023
    • 1 year
    • O-1PST
    • AirGradient
    • Thailand
    • YES (Outdoor)
    • 3.6 × 3.4 × 3.3 in
      (91.5 × 86.7 × 85 mm)
    • 6.3 oz
      (180 g)
    • USB-C
    • -
    • -
    • YES
    • NO
    • NO
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • -
    • -
    • -
    • -
    • -
    • NO
    • NO
    • NO
    • NO
    • YES
    • NO
    • YES
    • NO
    • YES
    • YES
    • YES
    • YES
    • NO
    • YES
    • YES
    • NO
    • YES
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • YES
    • YES
    • -
    • YES
    • YES
  • Apollo MSR-2 with CO2
    Apollo Automation

    MSR-2 with CO2

    $56.09
    BUY NOWCheck price
    • -
    • -
    • 2024
    • ?
    • MSR-2
    • Apollo Automation
    • USA
    • NO
    • ?
    • ?
    • USB-C
    • -
    • -
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • -
    • -
    • -
    • -
    • -
    • NO
    • NO
    • NO
    • NO
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • NO
    • NO
    • YES
    • NO
    • YES
    • YES
    • YES
    • YES
    • NO
    • YES
    • NO
    • YES
    • -
    • YES
    • YES
  • Moes CO2 Air Quality Monitor Temp and Hum
    Moes

    CO2 Air Quality Monitor Temp and Hum

    $84.99
    BUY NOWCheck price
    • -
    • -
    • 2023
    • 2 years
    • WSS-FB-CO2-U-MS
    • Moes
    • China
    • NO
    • 3.9 × 3.5 × 1.6 in
      (98 × 90 × 40 mm)
    • ?
    • USB-C
    • Built-in
    • 40 hours
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • LED
    • YES
    • NO
    • ?
    • ?
    • YES
    • YES
    • NO
    • NO
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • NO
    • NO
    • YES
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • -
    • YES
    • ?
  • Moes CO2 Portable Temp Humi Air Quality Monitor
    Moes

    CO2 Portable Temp Humi Air Quality Monitor

    $69.99
    BUY NOWCheck price
    • -
    • -
    • 2023
    • 2 years
    • BSS-X-CO2-U-MS
    • Moes
    • China
    • NO
    • 3.3 × 3.3 × 1.2 in
      (85 × 85 × 30 mm)
    • ?
    • USB-C
    • Built-in
    • 40 hours
    • NO
    • NO
    • NO
    • YES
    • NO
    • NO
    • NO
    • NO
    • YES
    • LED
    • YES
    • NO
    • ?
    • ?
    • YES
    • YES
    • NO
    • NO
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • NO
    • NO
    • YES
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • -
    • YES
    • YES

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