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Co2 Monitor Comparison - August 2025

5 Best Co2 Monitor In Canada

1
Best Choice
9.7Exceptional
2
9.6Exceptional
3
9.5Excellent
4
9.4Excellent
5
Best Value
9.2Excellent
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Model

SAF Aranet4 Home: Wireless Indoor Air Quality Meter for Home, Office or School (CO2, Temperature, Humidity and More) Portable, Battery Powered, E-Ink Screen, App for Configuration & Data History
Model
First Alert CO615A Carbon Monoxide Plug-In Alarm with Battery Backup and Digital Display
Model
SwitchBot Air Quality Monitor Indoor 5-in-1 Meter Pro CO2 Detector, CO2 Alarm, Temperature Humidity Monitor with APP, Large Display, Bluetooth Air Quality Tester for Home, Office, 2-Year Data Storage
Model
Newentor CO2 Detector Indoor Air Quality Meters, CO2 Monitor Portable for Home, Carbon Dioxide Detectors Sensor with Temperature Humidity, Thermometer Clock Voice Alert Large Display, Black
Model
INKBIRDPLUS Portable CO2 Detector, Mini Indoor CO2 Monitor, NDIR Sensor with Full Color LCD, Indicator Light, Alarm, Auto Calibration, for Home, Office, Travel

Brand

SAF
Brand
First Alert
Brand
SwitchBot
Brand
Newentor
Brand
INKBIRDPLUS

Reviews

2,390 reviews
Reviews
6,698 reviews
Reviews
90 reviews
Reviews
492 reviews
Reviews
28 reviews

Tech Specs

item weight

104 g
item weight
350 g
item weight
0.5 Pounds
item weight
130 g
item weight
140 g

customer reviews

4.7 4.7 out of 5 stars 1, 195 ratings 4.7 out of 5 stars
customer reviews
4.6 4.6 out of 5 stars 3, 349 ratings 4.6 out of 5 stars
customer reviews
4.3 4.3 out of 5 stars 45 ratings 4.3 out of 5 stars
customer reviews
4.3 4.3 out of 5 stars 246 ratings 4.3 out of 5 stars
customer reviews
4.2 4.2 out of 5 stars 14 ratings 4.2 out of 5 stars

product dimensions

2.39 x 7.01 x 7.01 cm 104 g
product dimensions
7.87 x 17.15 x 21.59 cm 350 g
product dimensions
-
product dimensions
1.5 x 9 x 12.5 cm 130 g
product dimensions
10.31 x 6.3 x 8.99 cm 140 g

batteries included

Yes
batteries included
Yes
batteries included
-
batteries included
No
batteries included
Yes

included components

Batteries
included components
Carbon Monoxide Alarms, battery ies
included components
-
included components
CO2 detector, user manual, USB cable
included components
Detector

power source

Battery Powered
power source
Battery Powered
power source
-
power source
Corded Electric
power source
Battery Powered

style

Modern
style
CO Alarm
style
-
style
5000ppm
style
Modern

batteries required

Yes
batteries required
Yes
batteries required
-
batteries required
Yes
batteries required
Yes

warranty description

2 year manufacturer
warranty description
5-year limited warranty
warranty description
-
warranty description
1 year limited parts and labor
warranty description
-

battery cell type

Alkaline
battery cell type
Alkaline
battery cell type
-
battery cell type
-
battery cell type
Lithium Ion

Available On

Available On
Available On
Available On
Available On

Our Top 3 Picks

Here are the top 3 recommended products with more information to help you find the right product for you
  • 9.7
    1
    SAF
    28% Off

    SAF Aranet4 Home: Wireless Indoor Air Quality Meter for Home, Office or School (CO2, Temperature, Humidity and More) Portable, Battery Powered, E-Ink Screen, App for Configuration & Data History

    Main highlights
    • Uses nondispersive infrared sensor (NDIR) technology for most precise and reliable CO2 measurements
    • The perfect companion for indoor environments, allowing you to monitor CO2 levels, temperature, relative humidity, and atmospheric pressure in real-time
    • Smartphone app for viewing and analyzing historical data up to 90 days history
    • Power-efficient e-ink display ensures super long battery life for this wireless device
    • Easy for anyone to use – the color coding and the optional buzzer warns you when the CO2 concentration gets too high
    • Designed and made in Europe
  • 9.6
    2
    First Alert
    22% Off

    First Alert CO615A Carbon Monoxide Plug-In Alarm with Battery Backup and Digital Display

    Main highlights
    • Plug & Protect, alarm plugs into any standard 120V AC outlet with no additional mounting. Line cord allows for multiple installation options
    • Mute button silences unnecessary alarms. It also tests alarm function with same button
    • Ez view backlit digital display, easy viewing of danger levels, current, and peak CO levels in your home. Illuminates only when alarm sounds or a button is pressed
    • Ez access battery door, front-open compartment allows easy battery change without dismounting alarm
    • Battery backup, provides consistent protection for added safety during power outages
  • 9.5
    3
    SwitchBot

    SwitchBot Air Quality Monitor Indoor 5-in-1 Meter Pro CO2 Detector, CO2 Alarm, Temperature Humidity Monitor with APP, Large Display, Bluetooth Air Quality Tester for Home, Office, 2-Year Data Storage

    Main highlights
    • Portable and Durable: Our air quality detector measures 92mm x 79mm x 25mm and weighs just 154g. It has a built-in battery with up to 12 months of life and a low battery warnings. Features wall-mount holes and an adjustable bracket for versatile placement in any environment.
    • Part of the SwitchBot Ecosystem: With a SwitchBot Hub, your Battery Circulator Fan or Evaporative Humidifier can automatically activate when CO2 levels exceed the set threshold, enhancing ventilation. This home air quality tester also supports third-party voice control through the Hub, simplifying air quality management.
    • High Precision Sensor: Built with Swiss-made NDIR sensors, this CO2 monitor accurately monitors air quality by measuring CO2 levels every 1 second with an accuracy of ±50 ppm and a range of 400-9000 ppm. Its high sensitivity and stability ensure rapid and precise air quality feedback.
    • 5-in-1 Multi-Functional Display Screen: SwitchBot Meter Pro CO2 features a 92-millimeter large screen that simultaneously displays CO2 levels, temperature, humidity, time, date, and comfort level. This indoor air quality monitor makes it easy to monitor your environment and decide when to ventilate for a healthier living space.
    • 3 Alarm Methods: Customize CO2, temperature, and humidity range with trigger alerts. When limits are exceeded, you'll be notified via sound alarms, visual screen alerts, and app notifications (SwitchBot Hub required). With this air quality monitor, you can continuously and effectively track air quality.

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Value for money

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When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.

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