10 Best carbon monoxide and gas detector in Canada

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Last Updated - 2025/07/16

Best Choice

01
First Alert

First Alert GCO1 (1039758) Plug-in Combination Explosive Gas and Carbon Monoxide Alarm with Battery Backup

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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. Line cord allows for high mounting to sense methane, low mounting for propane
Mute button silences unnecessary alarms immediately. It also tests alarm functions with same button
Ez view backlit digital display, easy viewing of danger levels, current, and peak CO levels in your home
Battery backup, provides consistent protection for added safety during power outages
3-Way protection, 3 threats sensed in 1 Alarm: carbon monoxide, propane gas and natural/methane gas
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9.8

Exceptional

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02
Gedsffati

5IN1 Plug in Smoke & Carbon Monoxide Detector& Combustible Natural Gas Alarm Combination Builti-in Backup Battery HD Screen [Smoke CO Gas Temp Humidity Sensor] for Home Indoor

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Main highlights

【Plug in & Play design】CA standard plug is compatible with 110V to 220V AC outlet. Fits all CA standard AC outlet in bedroom, kitchen, living-room, basement, hotel room, etc. Just Plug in and the detector will real-time work all day.
【Built-in 2000 mAh emergency Blackup battery】Provides 18-20h working time, helps to cope with sudden power outages. Rechargable lithium battery design, Compared to other disposable batteries, we can help you save a lot of battery replacement costs.
【All gas environment safety we care for you】Built-in CAN/ULC-S531,CAN/CSA-6.19,CAN/ULC-S588, standard independent Smoke / CO / Combustible gas sensor, HD screen visible and 85 dB audible design is real time detect the gas environment, bring you extra safety for you and family.
【5in1 CO & Smoke &Natural gas detectors】Our Gedsffati newest combination 5in1 detectors Integrated carbon monoxide, smoke, Combustible gas( like natural gas, propane, methane, natural gas, coal gas, gasoline, Hexane, butane, benzene, ethyene oxide, acetylene, LPG, LNG, etc),temperature and humidity sensors, real time to detector the environment gas safety for us.
【2.1’’ HD Screen】 All the datas real times and dynamically show on the HD screen, we can read the data faster from the big icons like: CO ppm, Smoke indicating bar, Combustible gas warning icon, humidity, temperature, CO indicator icon, plug and alarm status.
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9.7

Exceptional

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Value for Money

03
Gedsffati

Gedsffati 4in1 Plug in 4-in-1 Natural Gas Alarm & Carbon Monoxide Detectors Combination Built-in Upgraded CO/Combustible Gas/Propane/Methane/Temp & Humidity Sensor for Home Room Kitchen Hotel RV

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Main highlights

【HD Screen】 All the data will real times show on the HD screen, we can read the data faster from the big icons like: CO ppm, combustible gas indicating bar, humidity, temperature, CO indicator icon, and alarm status. Also we can judge the brightness status from brightness icon.
【CUSTOMER SERVICE】After-sales service team here will help you resolve any issues you have. We provide a 1-year warranty for our gas dector. Please contact us if you have any questions.
【CO & combustible Gas detecting range】CO range: 0-999ppm, when the CO is >50ppm, the alarm will sound. If combustible gases is exceed to the alarm concentration, the detector will sound and the gas bar icon color will change.
【All gas environment safety we care】 Built-in CSA standard independent combustible gas sensor and CO sensor, HD screen visible and 85 dB audible design is real time detect the gas environment, bring you extra safety for your and family. To create a full house safety 。
【4in1 CO & Gas detectors】Our newest combination 4in1 detectors Integrated carbon monoxide, combustible gas, temperature and humidity sensors, real time to detector the environment gas safety for us.
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9.4

Excellent

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04
HAKINAKU

4in1 Plug in Carbon Monoxide Alarm & Combustible Natural Gas Alarm Combination Detector Builti-in Backup Battery HD Screen [CO Gas Temp Humidity Sensor] for Home Indoor

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Main highlights

【Plug in & Play design】CA standard plug is compatible with 110V to 220V AC outlet. Fits all CA standard AC outlet in bedroom, kitchen, living-room, basement, hotel room, etc. Just Plug in and the detector will real-time work all day.
【Built-in 2000 mAh emergency Blackup battery】Provides 18-20h working time, helps to cope with sudden power outages. Rechargable lithium battery design, Compared to other disposable batteries, we can help you save a lot of battery replacement costs.
【All gas environment safety we care for you】 Built-in CAN/CSA-6.19,CAN/ULC-S588 standard independent CO / Combustible gas sensor, HD screen visible and 85 dB audible design is real time detect the gas environment, bring you extra safety for you and family.
【4in1 CO & Natural gas detectors】Our Gedsffati newest combination 4in1 detectors Integrated carbon monoxide, Combustible gas( like natural gas, propane, methane, natural gas, coal gas, gasoline, Hexane, butane, benzene, ethyene oxide, acetylene, LPG, LNG, etc),temperature and humidity sensors, real time to detector the environment gas safety for us.
【2.1’’ HD Screen】 All the datas real times and dynamically show on the HD screen, we can read the data faster from the big icons like: CO ppm,Combustible gas warning icon, humidity, temperature, CO indicator icon, plug and alarm status.
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9.2

Excellent

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05
VITITE

Carbon Monoxide Detectors Plug in, 4 in 1 Natural Gas, CO, Propane, Temp, Humidity & Explosive Gas Alarm for Home, Hotel, Kitchen, Camper

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Main highlights

User-Friendly Design: The screen dims when no gas is detected to reduce light disturbance. If CO or explosive gases are detected, the screen brightens and an audible alarm sounds, making it easy to spot a gas leak. Double-press the 'TEST' button to turn off or light up the screen
Sound & Screen Alerts: The detector gives early warnings with an 85dB alarm and an LCD screen (CO alarm: ≥150PPM, Gas alarm: ≥5%LEL). You can test its performance and wake up the screen with the test button
Plug and Play: No setup or expertise required—just plug it in and it's ready to use. It meets UL 2034 and UL 1484 safety standards, with no need to replace or buy batteries
Friendly Customer Service: We offer a three-year warranty and free returns. From purchase, you also get lifetime technical support. If you have questions, our engineers will help within 24 hours
4-in-1 Combination Gas Detector: The YC302 Pro+ uses high-precision sensors to monitor CO, natural gas, propane, temperature, humidity, and other explosive gases. It’s ideal for homes, kitchens, apartments, hotels, and RVs, keeping your family safe from gas leaks
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9.1

Excellent

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06
Gedsffati

Gedsffati Plug in Carbon Monoxide Detector & Natural Gas Combination Detectors 4in1 CO Gas Temp Humidity Monitor 1000mAh Battery Propane, Methane Explosive Gas Alarm

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Main highlights

【Wider CO & combustible Gas detecting range】CO range: 0-999ppm, when the CO is >50ppm, the alarm will sound. If combustible gases is exceed to the alarm concentration, the detector will sound and the gas bar icon color will change.
【Plug in design】CA standard plug is compatible with 110V to 220V AC outlet. Fits all US standard CA outlet in bedroom, kitchen, living-room, basement, hotel room, camping etc.
【Built-in 1000 mAh backup battery】Our CO&Gas detectors is built-in 1000 mAh battery, which provides 10h long working time, helps to cope with sudden power outages, and also we can use it as a portable CO&gas detectors.
【All gas environment safety we care】 Built-in CSA standard independent combustible gas sensor and CO sensor, HD screen visible and 85 dB audible design is real time detect the gas environment, bring you extra safety for your and family. To create a full house safety warning for you.
【4in1 CO & Gas detectors】This newest combination 4in1 CO&Gas detectors Integrated carbon monoxide, combustible gas, temperature and humidity sensors, real time to detect the environment gas safety for us.
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9.0

Excellent

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07
First Alert

First Alert SCO5RVA Battery Operated Combination Carbon Monoxide and Smoke Alarm

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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
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8.9

Very Good

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08
LSENLTY

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 Camping

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Main highlights

【Intimate Brightness Design】When you feel that keeping the high-definition screen on is very power-consuming, you can choose to press the "Brightness" button to adjust the brightness condition. When you choose to turn off the screen brightness, the product will continue to monitor and the indicator light will remind you every 30 seconds to inform you that the product is under normal monitoring.
【High-precision Comprehensive Detector】 The product is equipped with a precision CO sensor, which refreshes every 2 seconds and can quickly detect the surrounding CO value. The detection range is 0-999PPM, and the accuracy is ±5%. It can also be used as an indoor thermometer with a temperature range of -10℃ ~ 50℃ and an accuracy ±3%; it can also be used as a hygrometer with a humidity range of 5% ~ 95%RH and an accuracy ±5% RH.
【Advanced Electrochemical Sensor】When exposed to carbon monoxide it generates an electric current immediately, meaning it responds faster and more accurately than traditional co detector, and is less susceptible to being affected by other gases. Please note that when there is no carbon monoxide gas in the air, it is normal for the product to display a reading of 000PPM.
【A comprehensive CO Detector Plug in Design for Home and Travel】Carbon monoxide is harmful. When the carbon monoxide in the air exceeds the standard, it will cause harm to the human body and endanger life safety. This plug-in carbon monoxide detector is compatible with 110V to 220V AC power outlets. Fits all Canada standard AC outlets in bedrooms, RVs, kitchens, living rooms, basements, hotel rooms, and more.
【2.1-inch High-definition Display】 Not only can the carbon monoxide concentration value be intuitively viewed on the 2.1-inch high-definition display, but also the temperature and humidity conditions of daily concern can be clearly seen. Say goodbye to traditional carbon monoxide detectors that are eye-catching with small screens.
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8.8

Very Good

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09
Ledronco

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

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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.
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8.6

Very Good

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10
LSENLTY

LSENLTY Upgraded Plug in Combination Natural Gas Leak Detector and Carbon Monoxide Detectors, 4-in-1 Plug-in Wall Design CO & Gas Detector with HD Screen&Indicator& 85dB Alarm for Home, Kitchen, RV

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Main highlights

【Upgraded product software designl】We are committed to giving customers a better product experience. This product adds a combustible gas detection sensitivity design based on the old product. When the product is placed in the kitchen, bedroom, living room, etc., it is recommended to use the default S1 sensitivity; when the product is placed in an open space and a higher sensitivity is required to detect combustible gas, the S2 sensitivity can be selected.
【Intimate brightness design】 When you feel that it is very power-consuming to keep the HD screen on, you can choose to press the brightness key to adjust the brightness status. When you choose to turn off the screen brightness, the product will continue to monitor, and the indicator light will remind you every 5 seconds to inform you that the product is in normal monitoring status. If the carbon monoxide concentration value in the surrounding environment exceeds 50PPM or the concentration of combustible gas exceeds 100PPM, the detector will quickly detect it and issue an alarm sound of more than 85dB to remind you.
【Home Essentials & Travel Safety Essentials】 This plug-and-play portable carbon monoxide and combustible detector can make your travel safer when you are traveling, staying in a hotel, traveling in an RV. When you are worried that traditional carbon monoxide and combustible detectors need to replace batteries regularly and the small screen can hardly see the carbon monoxide and combustible concentrations, this four-in-one detector allows you to clearly see the carbon monoxide concentration, combustible gas concentration, temperature and humidity.
【High-precision comprehensive detector】 The product is equipped with precision CO and combustible sensors, which are refreshed every 2 seconds and can quickly detect the surrounding CO values. The detection range is 0-999PPM, and the accuracy is ±5PPM. The combustible sensor has a detection range of 0-600PPM and an accuracy of ±5%; it can also be used as an indoor thermometer with a temperature range of 14°F~122°F and an accuracy of ±5%; it can also be used as a hygrometer with a humidity range of 5%~95%RH and an accuracy of ±5%RH.
【HD display】 Not only can you intuitively view the carbon monoxide and combustible concentration values on the HD display, but you can also see the temperature and humidity conditions that you pay attention to daily, saying goodbye to the embarrassing situation of the small screen of traditional carbon monoxide and combustible detectors. At the same time, you can also intuitively view the concentration of multiple gases from one screen.
【Comprehensive CO and Gas Detector Plug in Wall Design for Home and Travel】Both carbon monoxide and combustible gases are harmful. When carbon monoxide and combustible gases in the air exceed the standard, it will cause harm to the human body and endanger life safety. This carbon monoxide & combustible gas detector plug-in has passed the CA tests and the quality is guaranteed. This plug-in carbon monoxide and combustible detector is compatible with 110V-220V AC power outlets. Suitable for all CA standard AC outlets such as bedrooms, RVs, kitchens, living rooms, basements, hotel rooms, etc.
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8.5

Good

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