10 Best carbon monoxide alarm in Canada

Advertising Disclosure

Last Updated - 2025/10/20

Best Choice

01
First Alert

First Alert SCO5RVA Battery Operated Combination Carbon Monoxide and Smoke Alarm

Free Shipping

9.5 Easy installation

9.5 Sheerness

9.3 Simple to use
Main highlights

Photoelectric sensor detects smoke while minimizing false alarms
Electrochemical CO sensor alerts you to carbon monoxide danger. Age 3 - 8 years
Date on the alarm indicates when the alarm was manufactured.
Combination smoke detector/carbon monoxide alarm detects two threats
Battery-operated unit installs quickly and easily without an electrician
A single button tests the unit or silences the alarm. Where to install - kitchen, living room, basement, bathrooms, hallway, indoors
Show more
9.9

Exceptional

Show more
Curious about how we select the top products for you? Explore How It Works

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.
02
YHOCO

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 (2 Pack)

Free Shipping

9.5 Easy installation

9.3 Simple to use

8.9 worth the money
Main highlights

【UNIQUE DESIGN]: Build in Carbon Monoxide Alarm With LED Display,Electrochmical sensor,high consistency and stability with nice outlooking，
【Suitable for all places]: houses, shops, hotels, restaurants, office buildings, schools, banks, libraries, computer rooms and warehouses, etc.
【Audible and Visual Warning]: 85 dB loud alarm beeps and red LED flashes when dangerous level CO gas is detected to provide instant alert signal effectively
【Alarm Stardant&ENERGY]: 50ppm,alert 90 minutes,100ppm,alert within 40 minutes,300ppm,alert within 3 mintues. Battery: DC3V (2*1.5V AA battery powered ),(Battery Not Inlcuded)
【Alarm Standard&LED display]:the alert time depend the level of carbon monoxide concentration, And the display screen of the carbon monoxide alarm can accurately measure the concentration of carbon monoxide and its concentration data. The CO level is between 000 to 999ppm. "LB" it displays for low battery and need to change battery, 'Err' on the LCD to indicate the unit ,then talk with our services.
Show more
9.8

Exceptional

Show more
Value for Money

03
First Alert

First Alert CO605A Carbon Monoxide Plug-In Alarm with Battery Backup

Free Shipping

9.9 Easy installation

9.7 Simple to use

9.7 clearly written
Main 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
Show more
9.6

Exceptional

Show more
04
Ledronco

Carbon Monoxide Detector,CO Alarm Detector with Digital Display and Sound Alarm for Home 2pcs

Free Shipping

9.5 Simple to use

9.3 Easy installation

8.9 worth the money
Main highlights

4：Power Supply: (DC3V) 2AA size batteries.(Not included) Sensor Type：Electrochemical Gas Detection Type：Carbon Monoxide Material: ABS
3： High Quality CO Alarm, UL2034 Certified Carbon Monoxide detector equipped with high accuracy and reliable long-life electrochemical CO sensor to detect CO gas leak quickly
2： Alarm Standard: the alert time depend the level of carbon monoxide concentration. 50ppm, alert within 60 to 90 minutes; 100ppm, alert within 10 to 40 minutes; 300ppm, alert within 3 minutes.
1：Light and Sound Alarm Warning: When a dangerous level of carbon monoxide is detected the red LED will flash and the alarm pattern will sound 85-decibel alarm to protect your family's life and property safety from CO detector.
Show more
9.4

Excellent

Show more
05
Kidde

Kidde 900-0263CO-CA Plug-in Carbon Monoxide Alarm (KN-COB-DP2CA), White, 1 Units

Free Shipping

9.9 Easy installation

9.9 Simple to use

9.5 worth the money
Main 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.
Show more
9.3

Excellent

Show more
06
YHOCO

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)

Free Shipping

9.7 Easy installation

9.5 Simple to use

9.1 worth the money
Main highlights

【UNIQUE DESIGN]: Build in Carbon Monoxide Alarm With LED Display,Electrochmical sensor,high consistency and stability with nice outlooking
【Suitable for all places]: houses, shops, hotels, restaurants, office buildings, schools, banks, libraries, computer rooms and warehouses, etc.
【Audible and Visual Warning]: 85 dB loud alarm beeps and red LED flashes when dangerous level CO gas is detected to provide instant alert signal effectively
【Alarm Stardant&ENERGY]: 50ppm,alert 90 minutes,100ppm,alert within 40 minutes,300ppm,alert within 3 mintues. Battery: DC3V (2*1.5V AA battery powered ),(Battery Not Inlcuded)
【Alarm Standard&LED display]:the alert time depend the level of carbon monoxide concentration, And the display screen of the carbon monoxide alarm can accurately measure the concentration of carbon monoxide and its concentration data. The CO level is between 000 to 999ppm. "LB" it displays for low battery and need to change battery, 'Err' on the LCD to indicate the unit ,then talk with our services.
Show more
9.2

Excellent

Show more
07
First Alert

First Alert CO400A Battery Powered Carbon Monoxide Alarm

Free Shipping

9.7 Easy installation

9.7 Simple to use

9.3 worth the money
Main 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
Show more
9.1

Excellent

Show more
08
DYWL SECURITY

DYWL SECURITY Carbon Monoxide Detectors Portable Carbon Monoxide Detector for Travel Carbon Monoxide Detector Plug in Wall with LED Digital Display Voice Light Plug and Play - 1 Pack

Free Shipping

9.9 Easy installation

8.7 Precision

8.7 Simple to use
Main highlights

When the CO concentration is 50PPM—alarm within 60-90 minutes, 100PPM—alarm within 10-40 minutes, 150PPM—85 decibel sound and light alarm within 5 seconds to remind you The environment is dangerous.
We are willing to provide you with unconditional returns and exchanges within 90 days. If you have any questions, please contact us by email, we will try our best to help you solve the problem.
Plug and play. whether you are at home or traveling, it can be hung anywhere with a power supply.
People cannot feel through their five senses. you need one or more CO detectors to ensure your personal safety.
Carbon monoxide monitors and displays the readings in real time, allowing you to quickly understand the environmental conditions.
Show more
9.0

Excellent

Show more
09
LSENLTY

LSENLTY Upgraded Carbon Monoxide Detector Plug in Wall, CO Detector with HD Screen&Indicator Visual&Audible Alarm, 3-in-1 Air Detector for Home RV Travel Hotel

25% Off Free Shipping
Main highlights

【Upgraded HD Display】Not only can you view the air concentration value intuitively on the HD display, you can also clearly see the temperature and humidity conditions that you pay attention to daily, and say goodbye to the eye-catching small screen of the traditional air detector. You can clearly see the readings of carbon monoxide, temperature and humidity from multiple viewing angles.
【Thoughtful brightness design】You can choose high, medium, low and off screen brightness settings. The breathing light can also be turned off. Please rest assured that even when the breathing light or screen brightness is turned off, the product continues to detect the air concentration value in the surrounding environment. Once it exceeds 50PPM, the alarm indicator and screen will light up quickly, and an alarm sound of more than 85dB decibels will be issued to remind you.
【High-precision comprehensive carbon monoxide detector】The product is equipped with a precision sensor, which refreshes every 2 seconds and can quickly detect the surrounding air value. The detection range is 0-999PPM and the accuracy is ±10%. It can also be used as an indoor thermometer with a temperature range of -10℃-50℃ and an accuracy of ±1.5℃; it can also be used as a hygrometer with a humidity range of 0% ~ 95%RH and an accuracy of ±5%RH.
【Comprehensive CO detector plug-in design】 This plug-in air detector is compatible with 110V to 220V AC power sockets. Suitable for all CA standard AC sockets such as bedrooms, RVs, kitchens, living rooms, basements, hotel rooms, etc.
【Advanced electrochemical sensor】When exposed to hamful air quality, it immediately generates current, which means it responds faster and more accurately than traditional air detectors, and is not easily affected by other gases. Please note that it is normal for the product to display a reading of 000PPM when there is no hamful air in the air.
Show more
8.8

Very Good

Show more
10
LSENLTY

LSENLTY Carbon Monoxide Detectors, 3 Years Standby Time Carbon Monoxide Monitor, 0-999 CO Detector Range, 85dB Loud Sound Carbon Monoxide Detector for Travel Camping Home(Mesh Bag, Battery Included)

Free Shipping

9.9 Simple to use

9.9 Easy installation

9.1 worth the money
Main highlights

Portable Carbon Monoxide Detector: compact size, dimension 8.1*5*2.7cm, weight 80g, with mesh bag (the mesh bag is at the bottom of the box, don't forget to open the plastic layer inside the package), adhesive lining and fixing screws. Place it on the table, on the wall, in your suitcase, or in your backpack. Suitable for camping, travel, car, and outdoor use.
Memory function: The carbon monoxide detector continuously monitors. When you press the button, the peak CO concentration for this period will be displayed with a beep sound.
Indicator Light Means: The green indicator light flashes to indicate that the product is continuously detecting the carbon monoxide concentration in the surrounding environment and is updating the value every 3 seconds. A red indicator light indicates that the product's battery is low or malfunctioning. When a fault signal is signaled, Err will be displayed on the screen and a beep will sound. Indicates that the device is faulty or the sensor has reached the end of its lifespan.
CO Concentration Range: The detection range of the co detector is 0-999PM. Updated every 3 seconds. If the concentration exceeds 50PPM, the product will sound an alarm within 60-90 minutes. If the concentration exceeds 100PPM, the product will sound an alarm within 10-40 minutes. If the concentration exceeds 300 ppm, the product will sound an alarm within 3 minutes. CO detectors have a volume of 85 dB. When the surrounding co concentration exceeds 50PPM, the alarm will sound immediately.
3-Year Standby Time: The carbon monoxide detector is equipped with a battery that has a battery life of up to 3 years. When the product's battery is low, the screen will display Lb and an alarm will occur every 20 seconds and the red light will flash. If the alarm repeats 15 times, the co detector will automatically shut down.
Show more
8.7

Very Good

Show more