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10 Best Carbon Monoxide Detector 2025 in the United States

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Our Top Picks

#1

Winner

X-Sense Smoke Detector Carbon Monoxide Detector Combo, 10-Year Battery Smoke Detector with Display, Auto-Check, 3-Pack

Rating
9.9
Chosen by1,436
Display and Alerts
Test and Silence Features
Lifespan and Warranty

Most important from
2140 reviews

Display and Alerts
The alarm is exceptionally loud, ensuring alerts are heard during emergencies.
Test and Silence Features
Self-check feature during tests adds an extra layer of reliability.
Lifespan and Warranty
Offers great value with a 10-year battery life, reducing maintenance worries.

The X-Sense Smoke Detector Carbon Monoxide Detector Combo offers two-in-one protection against both smoke and carbon monoxide, making it a practical choice for those looking for comprehensive safety in their home. One of its standout features is the 10-year sealed lithium battery, which means you won't need to worry about changing batteries frequently. This can be particularly appealing for busy households where ease of maintenance is a priority.

In terms of installation, this model is user-friendly, requiring no complicated wiring setup. It can be easily mounted on walls or ceilings with the included mounting tools. The detector boasts upgraded photoelectric and electrochemical sensors, which are designed to provide quicker responses and reduce false alarms, a useful feature for ensuring reliability.

However, it's worth noting that this unit is a basic standalone model, lacking interconnectivity and Wi-Fi capabilities. This means it can't be linked with other detectors or smart home systems, which might be a limitation if you're looking for a fully integrated home safety network. Additionally, there is no feature to test or silence the alarm remotely, which could be a consideration for some users.

The alarm is quite loud at 85 dB, ensuring that alerts are hard to miss, and it is constructed from high-quality, heat-resistant materials for durability. This is a sound choice for anyone seeking reliable, standalone smoke and carbon monoxide detection with minimal maintenance, although it may not suit those requiring advanced connectivity features.

Rating
9.9
Chosen by1,436
Display and Alerts
Test and Silence Features
Lifespan and Warranty

Most important from
2140 reviews

Display and Alerts
The alarm is exceptionally loud, ensuring alerts are heard during emergencies.
Test and Silence Features
Self-check feature during tests adds an extra layer of reliability.
Lifespan and Warranty
Offers great value with a 10-year battery life, reducing maintenance worries.
#2

Kidde Carbon Monoxide Detector, Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable

Rating
9.8
Power Source
Display and Alerts
Test and Silence Features

Most important from
34787 reviews

Power Source
Battery-powered and DIY-friendly, it ensures straightforward functionality checks with its test-reset button.
Display and Alerts
LED indicators provide clear visual cues for normal operation, testing, and low battery alerts, offering peace of mind.
Test and Silence Features
Battery-powered and DIY-friendly, it ensures straightforward functionality checks with its test-reset button.

The Kidde Carbon Monoxide Detector is a solid choice for anyone in need of a reliable and portable CO alarm. Its electrochemical sensor technology effectively detects carbon monoxide, ensuring safety during power failures since it operates on two included AA batteries. This makes it easy to install without any complicated wiring, allowing you to place it on a wall or a tabletop, which enhances its versatility. The product includes useful features like a green LED that confirms it's powered on, an 85-decibel alarm with a red LED for alerts, and an event memory that records the last detection, adding to its functionality.

On the plus side, the test-hush button simplifies the process of testing the unit or silencing low battery alerts, which is user-friendly. Additionally, the 10-year limited warranty provides peace of mind, although it's worth noting that this warranty only covers the alarm itself and not battery lifespan.

There are some limitations. While this unit performs well in detecting CO, reliance on battery power means that regular battery checks are essential to ensure it remains operational. It also lacks smart interconnectivity features found in some modern detectors, which might be a drawback for those seeking a more integrated safety system. Furthermore, it operates within a specific temperature range and may not perform well in extreme conditions.

The Kidde Carbon Monoxide Detector is particularly suitable for individuals living in apartments or homes without hardwired systems, as well as those looking for a straightforward, portable solution. It delivers reliable performance with some minor drawbacks related to battery dependency and lack of advanced features.

Rating
9.8
Power Source
Display and Alerts
Test and Silence Features

Most important from
34787 reviews

Power Source
Battery-powered and DIY-friendly, it ensures straightforward functionality checks with its test-reset button.
Display and Alerts
LED indicators provide clear visual cues for normal operation, testing, and low battery alerts, offering peace of mind.
Test and Silence Features
Battery-powered and DIY-friendly, it ensures straightforward functionality checks with its test-reset button.
#3

X-Sense Wireless Interconnected Combination Smoke and Carbon Monoxide Detector, 10-Year Battery Powered Fire and CO Alarm, SC06-W, 6-Pack

Rating
9.7
Power Source
Test and Silence Features

Most important from
3943 reviews

Power Source
The 10-year battery life is a standout feature, providing long-term convenience and reducing maintenance costs.
Test and Silence Features
Equipped with a practical test and silence button, it allows quick verification of functionality and temporary silencing of non-emergency alarms.

The X-Sense Wireless Interconnected Combination Smoke and Carbon Monoxide Detector offers a comprehensive safety solution, combining smoke and CO detection in one unit. Featuring both photoelectric and electrochemical sensors, it effectively detects smoke and carbon monoxide, ensuring reliable protection. Its standout feature is the wireless interconnectivity; when one unit detects danger, all linked alarms will sound, which is crucial for large homes or buildings, providing full coverage with the ability to link up to 24 units.

The detectors are powered by a long-lasting 10-year sealed lithium battery, eliminating the need for frequent battery changes and ensuring peace of mind. The inclusion of a test/silence button simplifies maintenance, allowing easy testing or silencing of alarms. For installation, the system is straightforward, with batteries and mounting hardware included, making it convenient for users.

Despite its robust features, the X-Sense SC06-W lacks Wi-Fi connectivity, which means it does not offer smartphone alerts or integration with smart home systems. This could be a drawback for tech-savvy users who prefer connected home devices. Additionally, while the alarms are audible, there is no mention of a visual display, which might be a consideration for those with hearing impairments.

This detector is ideal for households seeking a basic yet effective interconnected safety system without the complexities of smart home integration. It provides excellent value for those prioritizing long-term reliability and ease of installation.

Rating
9.7
Power Source
Test and Silence Features

Most important from
3943 reviews

Power Source
The 10-year battery life is a standout feature, providing long-term convenience and reducing maintenance costs.
Test and Silence Features
Equipped with a practical test and silence button, it allows quick verification of functionality and temporary silencing of non-emergency alarms.

Buying Guide for the Best Carbon Monoxide Detector

Choosing the right carbon monoxide detector is crucial for ensuring the safety of your home and loved ones. Carbon monoxide (CO) is a colorless, odorless gas that can be deadly if not detected early. A good CO detector will alert you to the presence of this dangerous gas, giving you time to take action. When selecting a carbon monoxide detector, consider the following key specifications to ensure you get the best fit for your needs.
Sensor TypeThe sensor type in a carbon monoxide detector determines how it detects CO gas. There are three main types: electrochemical, metal oxide semiconductor, and biomimetic. Electrochemical sensors are the most common and reliable, providing accurate readings and a longer lifespan. Metal oxide semiconductor sensors are less expensive but may not be as accurate. Biomimetic sensors use a gel that changes color when exposed to CO, which can be less precise. For most users, an electrochemical sensor is the best choice due to its reliability and accuracy.
Power SourceCarbon monoxide detectors can be powered by batteries, hardwired into your home's electrical system, or plugged into an outlet. Battery-powered detectors are easy to install and can be placed anywhere, but you need to remember to replace the batteries regularly. Hardwired detectors are more permanent and often come with a battery backup in case of power outages. Plug-in detectors are convenient but need to be placed near an outlet. Choose a power source that fits your home's setup and your preference for maintenance.
Display and AlertsA good carbon monoxide detector should have a clear display and loud alerts. The display can show CO levels in parts per million (ppm), which helps you understand the severity of the situation. Some detectors also have digital displays that show the peak level of CO detected. Alerts should be loud enough to wake you up if CO levels rise while you are sleeping. Look for detectors with both visual and audible alarms to ensure you are alerted in any situation.
Test and Silence FeaturesTest and silence features are important for maintaining your carbon monoxide detector. The test button allows you to check if the detector is working properly, while the silence button lets you temporarily mute the alarm if it goes off accidentally. Regularly testing your detector ensures it is functioning correctly, and the silence feature can prevent unnecessary noise while you address the cause of the alarm. Make sure the detector you choose has easy-to-use test and silence buttons.
InterconnectivityInterconnectivity allows multiple carbon monoxide detectors to communicate with each other. If one detector senses CO, all interconnected detectors will sound the alarm, providing a more comprehensive warning system. This feature is especially useful in larger homes or multi-story buildings. If you have a larger home or want to ensure maximum safety, look for detectors that can be interconnected either wirelessly or through hardwiring.
Lifespan and WarrantyThe lifespan of a carbon monoxide detector is the period during which it can reliably detect CO. Most detectors have a lifespan of 5 to 10 years. After this period, the sensors may become less accurate, and the detector should be replaced. Check the manufacturer's recommendations for the lifespan and look for detectors with a warranty that covers at least the expected lifespan. This ensures you are protected against defects and can rely on the detector for the specified period.

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