Choosing the right carbon monoxide (CO) detector is vital for protecting your home from this odorless, colorless gas. With thousands of CO poisoning incidents reported annually, having a reliable detector is essential. The latest models offer advanced features like smartphone connectivity and voice alerts, making safety more accessible.
In this guide, we’ve ranked and reviewed the 7 best carbon monoxide detectors of 2025, along with our top 2 choices, so you can pick the best one for your needs. Whether you need a basic model or a feature-rich option, we’re here to help you make an informed choice.
Our Top Picks:
Which Carbon Monoxide Detectors is the Best?
Carbon monoxide is a silent killer—it’s invisible, odorless, and can be deadly if undetected. A carbon monoxide detector is crucial for alerting you when dangerous CO levels rise in your home, giving you time to react and prevent poisoning. It’s a small investment that could save your life.
The primary benefit of a carbon monoxide detector is early detection of harmful gas levels, ensuring your home remains safe. These devices alert you in real-time, often through loud alarms, smartphone notifications, or voice alerts, allowing immediate action to protect your loved ones.
When choosing a carbon monoxide detector, consider factors like power source (battery or wired), sensor type (electrochemical or digital), additional features like smoke detection, and smart connectivity. Battery life and ease of installation are also important to ensure the device remains reliable.
To create this list of the best carbon monoxide detectors, we thoroughly researched top-rated products, considering customer reviews, expert recommendations, and key features like detection accuracy, battery life, and smart home compatibility. Each detector was evaluated for performance, ease of use, and long-term reliability to ensure the best cut.
Best Carbon Monoxide Detector For Home
Kidde Carbon Monoxide Detector
Pros:
- Easy plug-in installation with battery backup.
- Clear digital display for real-time CO monitoring.
Cons:
- An extension cord may add bulk to the setup.
The Kidde Carbon Monoxide Detector offers reliable protection with easy installation by plugging directly into any standard 120V outlet. A built-in 9-volt battery backup ensures continuous operation during power outages, keeping your home safe at all times. This detector also features a digital LED display that shows current CO levels, making it easy to monitor air quality.
Key Features:
- Digital LED display shows real-time CO levels
- The 85-decibel alarm provides loud alerts when carbon monoxide is detected
- Peak Level Memory records the last CO detection or test
- Test-Hush Button for easy testing and false alarm silencing
- Comes with an extension cord for flexible placement
- UL Listed with a 10-year limited warranty
Best Carbon Monoxide Detector & Smoke Alarm
First Alert Carbon Monoxide Alarm
Pros:
- Dual protection from smoke and carbon monoxide in one unit.
- The sealed 10-year battery ensures long-term reliability.
Cons:
- Once battery life ends, the entire unit needs replacement.
The First Alert Carbon Monoxide Alarm offers 2-in-1 protection, combining smoke and CO detection in a single device. This alarm features advanced Precision Detection technology, minimizing cooking-related false alarms while providing early warnings for fire emergencies. Its slim profile is half the size of standard alarms, making it a sleek addition to any home.
Key Features:
- 2-in-1 protection against smoke and carbon monoxide
- Precision Detection technology reduces false alarms
- 10-year sealed battery eliminates the need for replacements
- End-of-life warning ensures timely replacement
- Slim design for discreet installation
Best Battery Backup Carbon Monoxide Detector
Vzmcov 2-in-1 Carbon Monoxide and Natural Gas Detector
Pros:
- Accurate detection of both CO and flammable gases.
- The backup battery ensures continuous protection during power outages.
Cons:
- Rechargeable battery not included.
The Vzmcov Plug-in Gas and Carbon Monoxide Detector offers 2-in-1 protection, using a catalytic combustion sensor and an electrochemical sensor for high accuracy. This detector alerts you to dangerous levels of carbon monoxide and combustible gases, such as methane, propane, and natural gas. The LED screen displays gas concentration, allowing quick responses to potential threats.
Key Features:
- Dual detection for carbon monoxide and combustible gases
- LED screen shows the gas concentration in real-time
- Plug-in design with 9V rechargeable battery backup (not included)
- Compatible with various gases, including methane, propane, and natural gas
- Voice alerts and loud alarms for instant warnings
Best Versatile Carbon Monoxide Detector
Koabbit Combination Gas and Carbon Monoxide Detector
Pros:
- High-sensitivity sensors ensure timely detection of multiple gases.
- User-friendly design with an easy-to-read display.
Cons:
- Requires regular testing to ensure proper functionality.
The Koabbit Combination Gas and Carbon Monoxide Detector offers a reliable solution for detecting hazardous gases in the home. This plug-and-play device features an LCD digital display for easy installation and real-time monitoring.
Key Features:
- Utilizes a catalytic combustion sensor and an electrochemical sensor for accurate detection.
- Displays gas concentration levels and emits a loud alarm for quick response.
- Detects a variety of gases, including methane, natural gas, and propane.
- Automatically turns off the display when no dangerous gas is detected.
- Suitable for homes, kitchens, apartments, and RVs.
Best Safety Carbon Monoxide Detector
Glocusafety Battery-Powered Carbon Monoxide Detector
Pros:
- Long battery life with a lifespan of up to 10 years.
- User-friendly design with both wall-mounting and tabletop options.
Cons:
- Requires regular testing to ensure functionality.
The Glocusafety Battery-Powered Carbon Monoxide Detector features an innovative electrochemical sensor for precise and rapid CO detection. This alarm provides real-time digital concentration updates, complemented by a flashing green light to indicate ongoing monitoring, ensuring a high level of safety for families (UL 2034 and ETL Listed).
Key Features:
- Enhanced electrochemical sensing for fast and accurate detection.
- Includes a test button and mute function; can be mounted on walls or placed on flat surfaces.
- Low-power technology extends battery life; and comes with two Energize Max batteries with a 10-year expiration.
- High-definition LCDs real-time CO concentration and peak history; IPS technology offers clear visibility day and night.
Best Reliable Carbon Monoxide Detector
Jemay Carbon Monoxide Detector Alarm
Pros:
- Long-lasting protection with a 10-year lifespan and replaceable battery.
- Clear visual indicators for easy status monitoring.
Cons:
- Requires regular testing to ensure ongoing functionality.
The Jemay Carbon Monoxide Detector Alarm offers flexible installation and reliable protection against CO hazards. This detector is easy to install in various locations, whether wall-mounted or placed on a flat surface, making it ideal for home or travel use.
Key Features:
- Easy to install anywhere, suitable for wall-mounting or tabletop use.
- Designed for a 10-year lifespan with a 3-year replaceable battery for high reliability.
- Displays real-time CO levels and remaining battery life, allowing for quick assessment of the device’s status.
- Three-color LED shows operational status: green for normal, red for alarm, and yellow for failure.
- Detects a range of 20 to 999 ppm, with peak value memory for tracking previous dangerous levels.
- An advanced electrochemical sensor triggers a loud 85-decibel alarm for early warnings.
Best Long Lasting Carbon Monoxide Detector
Siterlink Carbon Monoxide Detector
Pros:
- Long-lasting protection with easy battery replacement.
- Clear indicators and display for monitoring CO levels.
Cons:
- Requires regular testing to ensure functionality.
The Siterlink 10-Year Life Carbon Monoxide Detector provides reliable protection with a lifespan of up to 10 years, powered by two replaceable AA alkaline batteries. The Test/Silence button allows weekly testing of the alarm’s functionality.
Key Features:
- Long-lasting performance with easy battery replacement.
- Displays real-time CO concentration; three-color LED indicators for alarm status, power, and faults.
- Versatile design allows for wall-mounting or freestanding placement, making it suitable for any area in the home.
- Equipped with an upgraded electrochemical sensor for precise detection, featuring an 85-decibel alarm for early warnings.
- The lightweight design (4.1 x 3.4 x 1.7 inches, 7 ounces) makes it easy to carry, perfect for travel.
 The Bottom Line
Choosing the right carbon monoxide detector is a critical step in safeguarding your home and loved ones from the dangers of CO poisoning. Whether you’re looking for a simple, budget-friendly option or a smart, feature-rich model, the best carbon monoxide detectors of 2025Â offer a wide range of solutions to meet your needs. Prioritize reliability, ease of use, and additional features like smartphone alerts or smoke detection to ensure comprehensive protection.
By investing in one of the top detectors on our list, you can enjoy peace of mind knowing your home is equipped to handle potential threats.