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10 Best Smoke Detector Carbon Monoxide Detectors Combo 2025 in the United States
#1
Winner
X-Sense Wireless Interconnected Combination Smoke and Carbon Monoxide Detector with LCD Display & 10-Year Battery, Over 820 ft Transmission Range, 6-Pack
The X-Sense Wireless Interconnected Combination Smoke and Carbon Monoxide Detector offers a comprehensive safety solution for your home. Equipped with both a photoelectric smoke sensor and an electrochemical CO sensor, it ensures reliable detection of both smoke and carbon monoxide. This 6-pack model allows you to interconnect up to 24 devices, ensuring that when one alarm goes off, all of them do, providing extensive coverage and early warnings throughout your home.
Rating
10.0
Chosen by1,289
Power Source
Interconnectivity
Additional Features
Most important from
5089 reviews
#2
Kidde Smoke & Carbon Monoxide Detector, 10-Year Battery Powered, LED Warning Light Indicators, 4 Pack
The Kidde Smoke & Carbon Monoxide Detector stands out as a reliable and convenient choice for home safety, combining smoke and carbon monoxide detection in one device. The photoelectric and electrochemical sensors ensure accurate detection of smoke and CO, which helps minimize false alarms, especially those caused by everyday cooking. Its 10-year battery life is a major plus, eliminating the need for frequent battery replacements and the annoyance of low-battery chirps, though users should note that this refers to a limited warranty on the alarm itself rather than a guaranteed battery life.
Rating
10.0
Sensor Type
Alarm Type
Lifespan and Maintenance
Most important from
658 reviews
#3
First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup, SMICO100-AC, 1-Pack
The First Alert SMICO100-AC is a combination smoke and carbon monoxide detector that offers robust safety features and user convenience. It uses ionization sensor technology, which is effective in detecting fast-flaming fires commonly found in home environments. The hardwired power source with a battery backup ensures continuous protection even during power outages. This model is designed for easy installation with its Quick Connect Plug, eliminating the need for rewiring, which is ideal for those who prefer straightforward setups.
Rating
9.8
Interconnectivity
Additional Features
Most important from
27116 reviews
Top 10 Best Smoke Detector Carbon Monoxide Detectors Combo 2025 in the United States
#1
Winner
10.0 score
X-Sense Wireless Interconnected Combination Smoke and Carbon Monoxide Detector with LCD Display & 10-Year Battery, Over 820 ft Transmission Range, 6-Pack
X-Sense Wireless Interconnected Combination Smoke and Carbon Monoxide Detector with LCD Display & 10-Year Battery, Over 820 ft Transmission Range, 6-Pack
Sensor Type: electrochemical, photoelectric
Power Source: Battery Powered
Interconnectivity: RF Interconnected, 24 devices
Alarm Type: Audible
Lifespan and Maintenance: 10-year battery, LCD display
Additional Features: Heat-resistant plastic, no Wi-Fi, LCD
Chosen by 1289 this week
Kidde Smoke & Carbon Monoxide Detector, 10-Year Battery Powered, LED Warning Light Indicators, 4 Pack
Kidde Smoke & Carbon Monoxide Detector, 10-Year Battery Powered, LED Warning Light Indicators, 4 Pack
Sensor Type: Photoelectric, Electrochemical
Power Source: Battery Powered
Alarm Type: Smoke and CO Alarm
Lifespan and Maintenance: 10-year battery, weekly testing
Additional Features: Self-testing, LED, 85-decibel alarm, test/hush
First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup, SMICO100-AC, 1-Pack
First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup, SMICO100-AC, 1-Pack
Sensor Type: Ionization
Power Source: Corded Electric, battery backup
Interconnectivity: Yes
Alarm Type: Smoke, CO
Additional Features: Test/silence button, Quick Connect
X-Sense Smoke Detector Carbon Monoxide Detector Combo, 10-Year Battery Smoke Detector with Display, Auto-Check, 3-Pack
X-Sense Smoke Detector Carbon Monoxide Detector Combo, 10-Year Battery Smoke Detector with Display, Auto-Check, 3-Pack
Sensor Type: electrochemical, photoelectric
Power Source: Battery Powered
Alarm Type: Audible, 85 dB
Lifespan and Maintenance: 10-year sealed battery
Additional Features: dual protection, heat-resistant materials
X-Sense Smart Smoke Detector Carbon Monoxide Detector Combo with Replaceable Battery, Wi-Fi Smoke and Carbon Monoxide Detector with Real-Time App Notifications, SC07-WX, 6-Pack
X-Sense Smart Smoke Detector Carbon Monoxide Detector Combo with Replaceable Battery, Wi-Fi Smoke and Carbon Monoxide Detector with Real-Time App Notifications, SC07-WX, 6-Pack
Sensor Type: Electrochemical, Photoelectric
Power Source: Battery Powered
Interconnectivity: None
Alarm Type: Audible
Lifespan and Maintenance: Ten-year sensor lifespan
Additional Features: Wi-Fi, real-time alerts, device-sharing
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X-Sense Wireless Interconnected Combination Smoke and Carbon Monoxide Detector, 10-Year Battery Powered Fire and CO Alarm, SC06-W, 6-Pack
X-Sense Wireless Interconnected Combination Smoke and Carbon Monoxide Detector, 10-Year Battery Powered Fire and CO Alarm, SC06-W, 6-Pack
Sensor Type: Photoelectric, Electrochemical
Power Source: Battery Powered
Interconnectivity: Wireless, up to 24 units
Alarm Type: Audible
Lifespan and Maintenance: 10-year battery, low battery warning
Additional Features: Test/silence button, no Wi-Fi
First Alert BRK SC-9120B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup
First Alert BRK SC-9120B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup
Sensor Type: Ionization
Power Source: Battery Powered, Hardwired
Interconnectivity: Interconnectable with BRK and First Alert
Alarm Type: Audible
Lifespan and Maintenance: 10-year limited warranty
Additional Features: Battery backup, Universal mount, Silence/test button
First Alert SMCO210, 10-Year Sealed Battery Combination Smoke & Carbon Monoxide Alarm with Slim Profile Design, 1-Pack
First Alert SMCO210, 10-Year Sealed Battery Combination Smoke & Carbon Monoxide Alarm with Slim Profile Design, 1-Pack
Sensor Type: Photoelectric
Power Source: Battery Powered
Interconnectivity: None
Alarm Type: Combination Alarm
Lifespan and Maintenance: 10-year battery, end-of-life warning
AEGISLINK Wireless Interconnected Smoke and Carbon Monoxide Alarm Combo, Battery Powered, Digital Display, 6-Pack
AEGISLINK Wireless Interconnected Smoke and Carbon Monoxide Alarm Combo, Battery Powered, Digital Display, 6-Pack
Sensor Type: Photoelectric, Electrochemical
Power Source: Battery Powered
Interconnectivity: Wireless, up to 24 units linked
Alarm Type: Audible, 85 dB
Lifespan and Maintenance: 10-year sensor life, regular checks
Additional Features: LCD display, one-button control
#10
8.2 score
X-Sense Smart Smoke Detector Carbon Monoxide Detector Combo, Battery-Operated (Not AC Hardwired) Interconnected Combination Smoke Carbon Monoxide Detector, 5 Detectors with 1 Base Station, SC07-MR51
X-Sense Smart Smoke Detector Carbon Monoxide Detector Combo, Battery-Operated (Not AC Hardwired) Interconnected Combination Smoke Carbon Monoxide Detector, 5 Detectors with 1 Base Station, SC07-MR51
Sensor Type: Photoelectric
Power Source: Battery Powered
Interconnectivity: App integration, Base station
Alarm Type: Smoke and Carbon Monoxide
Lifespan and Maintenance: 10-year lifespan, Replace batteries periodically
Additional Features: App notifications, Test/silence via app
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Buying Guide for the Best Smoke Detector Carbon Monoxide Detectors Combo
Choosing the right smoke and carbon monoxide detector combo is crucial for ensuring the safety of your home and loved ones. These devices are designed to detect the presence of smoke and carbon monoxide, alerting you to potential fire hazards and dangerous gas leaks. When selecting a combo detector, it's important to consider several key specifications to ensure you get the best fit for your needs. Understanding these specifications will help you make an informed decision and provide peace of mind knowing that your home is protected.Sensor TypeThe sensor type in a smoke and carbon monoxide detector determines how it detects smoke and CO. Common types include ionization sensors, which are better at detecting fast-flaming fires, and photoelectric sensors, which are more responsive to smoldering fires. Some models combine both types for comprehensive coverage. For carbon monoxide detection, electrochemical sensors are the most reliable. Choose a combo detector with both photoelectric and electrochemical sensors for the best protection against both fire and CO hazards.
Power SourceThe power source for a smoke and carbon monoxide detector can be either battery-operated, hardwired, or a combination of both. Battery-operated models are easy to install and can be placed anywhere, but require regular battery replacement. Hardwired models are connected to your home's electrical system and often have battery backup for power outages. Combination models offer the reliability of hardwiring with the convenience of battery backup. Consider your home's setup and your preference for maintenance when choosing the power source.
InterconnectivityInterconnectivity refers to the ability of multiple detectors to communicate with each other. When one detector senses danger, interconnected units will all sound an alarm, providing a more comprehensive alert system. This feature is especially important in larger homes or multi-story buildings. Some models offer wireless interconnectivity, which is easier to install, while others require hardwiring. If you have a large home or want to ensure maximum coverage, look for detectors with interconnectivity.
Alarm TypeThe alarm type in a smoke and carbon monoxide detector can vary, with some models offering voice alerts in addition to traditional sirens. Voice alerts can provide specific information about the type and location of the danger, which can be particularly helpful in an emergency. Traditional sirens are loud and effective but may not convey as much information. Consider whether you prefer a simple siren or the added clarity of voice alerts when choosing your detector.
Lifespan and MaintenanceThe lifespan of a smoke and carbon monoxide detector is an important consideration, as sensors degrade over time. Most detectors have a lifespan of 7-10 years, after which they should be replaced. Some models come with end-of-life indicators to remind you when it's time for a replacement. Regular maintenance, such as testing the alarm and replacing batteries, is also crucial for ensuring the detector functions properly. Look for models with easy maintenance features and clear lifespan indicators to keep your home safe.
Additional FeaturesAdditional features in smoke and carbon monoxide detectors can enhance their functionality and convenience. Some models offer smart connectivity, allowing you to monitor and control the detector via a smartphone app. Others may include features like emergency lighting, which can help illuminate your escape route in the event of an alarm. Consider what additional features might be beneficial for your home and lifestyle when selecting a detector.