Advertising Disclosure Co2 Detectors Comparison - August 2025
6 Best Co2 Detectors In Canada
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
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| 1 Best Choice  9.9Exceptional | 2  9.7Exceptional | 3  9.6Exceptional | 4 Best Value  9.4Excellent | 5  9.3Excellent | 6  9.2Excellent |
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ModelKidde 900-0263CO-CA Plug-in Carbon Monoxide Alarm (KN-COB-DP2CA), White, 1 Units | Model First Alert CO605A Carbon Monoxide Plug-In Alarm with Battery Backup | Model First Alert CO400A Battery Powered Carbon Monoxide Alarm | Model Carbon Monoxide Detector,CO Alarm Detector with Digital Display and Sound Alarm for Home 2pcs | Model Carbon Monoxide Alarm, Digital Display CO Detector Security CO Monoxide for Home Kitchen Bedroom Safety Battery Powered (Battery not Included),Comply with CSA 6.19 (1 Pack) | Model LSENLTY Upgraded Carbon Monoxide Detector Plug in Wall, Carbon Monoxide Detectors with HD Screen&Indicator Visual&Audible Alarm, 3-in-1 CO Detector(CO Gas Meter, Temp and Humidity) for Home RV Travel |
BrandKidde | Brand First Alert | Brand First Alert | Brand Ledronco | Brand YHOCO | Brand LSENLTY |
Reviews | Reviews | Reviews | Reviews  | Reviews | Reviews |
Features | |||||
Easy installation 9.9 | Easy installation 9.9 | Easy installation 9.8 | Easy installation 9.4 | Easy installation 9.8 | Easy installation 9.1 |
Worth the money 9.6 | Worth the money 9.4 | Worth the money 9.4 | Worth the money 9.1 | Worth the money 9.3 | Worth the money 8.6 |
Simple to use 9.9 | Simple to use 9.8 | Simple to use 9.8 | Simple to use 9.6 | Simple to use 9.6 | Simple to use 9.1 |
Tech Specs | |||||
item weight 200 g | item weight 220 g | item weight 210 g | item weight 222 g | item weight 160 g | item weight 0.1 Kilograms |
customer reviews4.7 4.7 out of 5 stars 1, 590 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 4.6 4.6 out of 5 stars 1, 815 ratings 4.6 out of 5 stars | customer reviews 4.3 4.3 out of 5 stars 682 ratings 4.3 out of 5 stars | customer reviews 4.4 4.4 out of 5 stars 432 ratings 4.4 out of 5 stars | customer reviews 4.8 4.8 out of 5 stars 13 ratings 4.8 out of 5 stars |
product dimensions 4.06 x 7.11 x 11.94 cm 199.58 g | product dimensions 6.68 x 17.15 x 21.59 cm 220 g | product dimensions 6.6 x 17.15 x 21.59 cm 210 g | product dimensions 10 x 10 x 3.5 cm 222 g | product dimensions 10 x 10 x 4 cm 160 g | product dimensions - |
batteries included Yes | batteries included Yes | batteries included Yes | batteries included No | batteries included No | batteries included - |
included components 2 AA batteries, installation guide, Kidde 900-0263CO-CA AC Plug-in Carbon Monoxide Alarm | included components Carbon monoxide alarm 1 9v battery | included components Carbon Monoxide Alarms, battery ies | included components Detector | included components Detector | included components - |
power source Battery Powered | power source Battery Powered | power source Battery Powered | power source Battery Powered | power source Battery Powered | power source - |
style CO Alarm | style CM Alarm w/ Battery | style Battery Powered CM Alarm | style Digital | style Digital | style - |
batteries required No | batteries required Yes | batteries required Yes | batteries required Yes | batteries required Yes | batteries required - |
warranty description 10-year limited warranty | warranty description 7 year limited warranty | warranty description 5-year limited warranty | warranty description - | warranty description 1 | warranty description - |
item package quantity 1 | item package quantity 1 | item package quantity 1 | item package quantity - | item package quantity 1 | item package quantity - |
battery cell type Alkaline | battery cell type Alkaline | battery cell type Alkaline | battery cell type - | battery cell type - | battery cell type - |
color White | color - | color - | color White | color 1 PACK | color - |
Available On | 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
9.9
1KiddeKidde 900-0263CO-CA Plug-in Carbon Monoxide Alarm (KN-COB-DP2CA), White, 1 Units
9.9 Easy installation9.9 Simple to use9.6 worth the moneyMain highlights- Test / Reset Button – Tests the unit for proper operation. Resets the carbon monoxide alarm.
- Tamper Resist Feature – If activated, unit goes into constant alarm mode if it has been unplugged or has come loose from the outlet.
- Low Battery Hush – Silences low battery chirp warning for up to twelve hours in order to maintain protection without having to replace the batteries at an inconvenient time. 2 AA Battery Backup – Provides continuous protection in case of a power failure.
- End of Life Notification – Ten (10) years after unit is first powered, this alarm will chirp two times every 30 seconds to indicate it is time to replace the alarm.
- AC Plug-in Operated – Easy to install – just plug into a non-switched AC wall outlet.
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9.7
2First Alert
First Alert CO605A Carbon Monoxide Plug-In Alarm with Battery Backup
9.9 Easy installation9.8 Simple to use9.4 worth the moneyMain highlights- Plug & protect, alarm plugs into any standard 120v ac outlet with no additional mounting
- Mute button silences unnecessary alarms. It also tests the alarm's function with same button
- Ez access battery door, front-open compartment allows easy battery change without dismounting alarm
- Electrochemical co sensorthe first alert carbon monoxide plug-in alarm
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9.6
3First Alert
First Alert CO400A Battery Powered Carbon Monoxide Alarm
9.8 Easy installation9.8 Simple to use9.4 worth the moneyMain highlights- SAME AS CO400A ASIN: B004Y75ZS2
- Mute button, mutes unnecessary alarms. Also tests alarm function with same button
- Low battery Signal mute, quiets low battery Signal for up to 8 hours
- End of life timer, alarm chirps when it is time to replace it
- Electrochemical sensor, most accurate technology available for detecting carbon monoxide* *compared to other common sensing technologies
- Care: Vacuum the CO Alarm cover once a month, using the soft brush attachment. Never use water, cleaners, or solvents, since these may damage the unit. Test the CO Alarm again after vacuuming.
- Battery operated, 9V battery included
Our ranking system
The BestChoices.com Team selects top-of-the-line items from a wide selection and conducts rigorous evaluations on almost all the products available on the internet. We rank each product based on how well it matches our criteria.We can ensure that the product is well-tested with the help of our expertise, experts, and artificial intelligence technology. BestChoices.com requires consistent care for the products we review, ensuring that our assessments are always accurate and up to date.
Features
Our team of experts analyzes key attributes, capabilities, significance, and many more depending on the type of product to determine its effectiveness.
Consumer Reviews
We ensure an evaluation of the ratings using references all over the internet for each product. With the help of our AI technology and professional review teams, we give weight to the worth of individual user experiences.
Popularity
Popularity is an important criterion in choosing a product. Several factors contribute to the popularity of the products on our site, including prestige, relevance, reputation, news, and more.
Value for money
BestChoices.com compares product attributes to price, examines tech specs, ratings and reviews, and more.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.
Value for money
BestChoices.com compares product attributes to price, examines tech specs, ratings and reviews, and more.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.
