Best Kidde Combination Gas Carbon Monoxide Detectors in 2026
Daisy
Last Updated: Jul 20, 2026
Daisy
Last Updated: Jul 20, 2026
* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
2-in-1 Detection - Smoke & carbon monoxide detector combo alerts you to both smoke & fire events as well as poisonous, CO gas in a single device
24/7 Self-testing components are always checking the device to ensure it's operating as expected (not a substitute for a manual push test)
Easy installation mounting bracket included for quick installation in 4 orientations
Photoelectric sensor detects visible fire particles associated with slow, smoldering fires, while the electrochemical sensor detects carbon monoxide
85-decibel alarm & LED warning indicators alert you to various status: green = normal operation, amber = operating error, and red = smoke, fire or carbon monoxide event
Battery operated to provide reliable detection, even during power outages; two AA batteries included
UL Certified with a 10-year limited warranty on alarm
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Fire and CO detector in 1 unit with alert modes, LED lights, and voice alarm, that states, "Fire. Fire.", "Warning. Carbon Monoxide.", or "Low Battery."
Ionization sensor technology - smoke detector detects invisible fire particles, 85 decibel alarm alerts of fire
Protects during a power failure - combo smoke and CO alarm operates on 2-AA batteries
Test-Hush Feature - silences the unit for approximately 8 minutes; tamper-resistant technology deters removal of the unit from the wall or ceiling
UL Certified, 10-year limited warranty
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Bookworm LLC | 6.06 | ✅ | ✅ | ✅ |
Easy to install CO and explosive gas alarm with three convenient mounting options including AC wall outlet, plugin six foot power cord, or table top
Carbon Monoxide (CO) alarms four quick beeps, followed by five seconds of silence, followed by four quick beeps. Displays CO concentration
Gas alarms one second of alarm on, one second of alarm off, repeating with “GAS” shown in display
Loud pulsing alarm that will sound to alert you to a potential problem
Low battery warning feature indicates when the battery needs replacement
UL Certified, 5-year Limited Warranty
Two alarms in one detects carbon monoxide and explosive gas
Three convenient mounting options
Digital display and peak level button displays the peak CO level recorded by the alarm since it was last reset
Battery backup 9 volt battery included
Kidde’s carbon monoxide alarms meet the requirements of Underwriters Laboratories (UL), an independent facility that tests products for compliance with widely-accepted safety standards
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Smoke detector carbon monoxide detector combo – sounds loud 85 decibel alarm with voice alerts that announce "Fire! Fire!" or "Warning! Carbon Monoxide!"
Hardwired with backup battery - combo smoke and carbon monoxide detector is hardwired into a 120V power source with 9V battery backup
Easy installation – battery door is on the front for quick replacement
Photoelectric smoke detector senses visible fire particles and electrochemical CO detector provides accurate readings
UL Certified, 10-year limited warranty
Will interconnect with up to 24 other devices including smoke, CO and heat alarms
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
2-in-1 Detection - Smoke & carbon monoxide detector combo alerts you to both smoke & fire events as well as poisonous, CO gas in a single device
Photoelectric sensor detects visible fire particles associated with slow, smoldering fires, while the electrochemical sensor detects carbon monoxide
An 85-decibel alarm sounds & a red LED indicates the smoke detector is sensing smoke or fire
Lithium battery operated: eliminates the need for battery replacement & provides reliable detection, even during power outages
Test-Hush button makes it easy to test the smoke detector and silence false alarms that occur from cooking or shower steam
The alarm will automatically activate when it is attached to the mounting bracket, there are no pull tabs, no switches, everything is automatic
At the end of alarm life, the unit will chirp, indicating the alarm is in need of replacement
UL Certified with a 10-year limited warranty on alarm
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
2-in-1 Detection - Smoke & carbon monoxide detector combo alerts you to both smoke & fire events as well as poisonous, CO gas in a single device
Photoelectric sensor detects visible fire particles associated with slow, smoldering fires, while the electrochemical sensor detects carbon monoxide
An 85-decibel alarm sounds & a red LED indicates the smoke detector is sensing smoke or fire
Lithium battery operated: eliminates the need for battery replacement & provides reliable detection, even during power outages
Test-Hush button makes it easy to test the smoke detector and silence false alarms that occur from cooking or shower steam
The alarm will automatically activate when it is attached to the mounting bracket, there are no pull tabs, no switches, everything is automatic
At the end of alarm life, the unit will chirp, indicating the alarm is in need of replacement
UL Certified with a 10-year limited warranty on alarm
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Advanced technology – smoke and carbon monoxide detectors combine ionization & electrochemical sensors to detect invisible fire particles & CO gas
Hardwired alarms with tamper proof backup battery – to help protect your home and family during power outages, eliminates the need for battery replacement
Hush feature silences nuisance or “false” alarms – with just the push of a button on the alarm itself
85-db alarm & voice warnings – “Fire” or “Warning: Carbon Monoxide” so you know why the smoke & carbon monoxide detector is sounding
Interconnect alarms – allows you to connect up to 24 Kidde devices of this type, giving you trusted detection throughout your home
UL Certified, 10-year limited warranty
Pack of 6
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Bargain Buddies NC | 5.25 | ✅ | ✅ | ✅ |
2 units in 1: unit alerts you to smoke & carbon monoxide by sounding a loud, 85-decibel alarm & sounding voice alerts
Photoelectric sensor technology senses visible fire particles, while a electrochemical sensor detects CO gas
Voice Alarm & an 85-decibel alarm announces a hazard when detected: “Fire!” = smoke or fire or “Warning Carbon Monoxide” = CO gas, or "Replace Alarm" when the alarm has reached its end of life span
Operates on a 10-year lithium battery, eliminating the need for battery replacement, while providing reliable detection during a power failure
Combination fire alarm automatically activates when it is attached to the mounting bracket
Test-Hush Button makes testing the detector or silencing false alarms easy (false alarms may occur from routine cooking, shower steam, dust or humidity)
UL Certified, 10-year limited manufacturer warranty
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
CO detector with voice alert modes & LED lights that pulse for power, CO detection, & low battery
Photoelectric sensor technology - smoke detector detects visible fire particles, 85 decibel alarm alerts of fire
Protects during a power failure - combo smoke and CO alarm operates on a 10-year, sealed lithium battery
Low battery warning feature indicates when the battery needs replacement
UL Certified, 10-year limited warranty
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
2-in-1 Detection - Smoke & carbon monoxide detector combo alerts you to both smoke & fire events as well as poisonous, CO gas in a single device
24/7 Self-testing components are always checking the device to ensure it's operating as expected (not a substitute for a manual push test)
Easy installation mounting bracket included for quick installation in 4 orientations
Photoelectric sensor detects visible fire particles associated with slow, smoldering fires, while the electrochemical sensor detects carbon monoxide
85-decibel alarm & LED warning indicators alert you to various status: green = normal operation, amber = operating error, and red = smoke, fire or carbon monoxide event
Battery operated to provide reliable detection, even during power outages; two AA batteries included
UL Certified with a 10-year limited warranty on alarm
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Industry First: 2-in-1 Detection - Carbon monoxide detector & Indoor Air Quality Monitor combo alerts you to both CO & indoor air quality hazards, in a single device
Voice Alarm announces the hazard type when detected: “Fire!” = smoke or fire, “Warning Carbon Monoxide” = CO gas, or "Replace Alarm" when the unit has come to its end of life span
Easy Installation: download the Kidde app, scan the QR code on the back of the CO alarm, & plug into a standard outlet
Compatible with Amazon Alexa, Google Home, iPhone, & Android smart devices
Indoor Air Quality Monitoring: monitors harmful chemicals known as Total Volatile Organic Compounds (TVOCs) that come from cleaning products & paint, also monitors humidity & mold risk
WiFi enabled technology allows notifications to be sent to your smartphone (as well as friends & family) in the event of a CO hazard in your home
Electrochemical sensor technology detects poisonous carbon monoxide gas inside your home
First UL listed carbon monoxide & indoor air quality monitoring device; 10-year limited manufacturer warranty on alarm - not a battery replacement claim
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| ❌ | ❌ | ❌ |
Product 1: 85db alarm & voice warnings – “Fire.” or “Warning: Carbon Monoxide” so you know why the smoke & carbon monoxide detector is sounding
Product 1: Hardwired alarm with tamper proof backup battery – to help protect your home and family during power outages, eliminates the need for battery replacement
Product 1: Interconnect alarms – allows you to connect up to 24 Kidde devices of this type, giving you trusted detection throughout your home
Product 1: Advanced technology – smoke and carbon monoxide detector combines ionization & electrochemical sensors to detect invisible fire particles & CO gas
Product 2: Ionization sensing technology may detect invisible fire particles, associated with flaming fires, quickly and sound an 85dB alarm
Product 2: Hardwired smoke detector with battery backup (included) ensures that you'll be alerted to a fire, even during a power outage
Product 2: Large base makes mounting easy, while a front battery pull lets you activate the smoke alarm without removing it from the mounting bracket
Product 2: Whole home family protection - place 1 fire alarm on each level of your home & in your bedroom; maximum of 24 Kidde devices can be interconnected
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Kidde | 12 |
We've carried out a comprehensive analysis of 64,282 reviews on combination gas carbon monoxide detectors, using our selection criteria to identify the best options in the home improvement. Our findings reveal that most customers typically select combination gas carbon monoxide detectors priced around $117.51, with top brands including first alert, kidde, koabbit, bqqzhz, moesapu, lecoolife, saillong, glbsunion and x-sense and hcmlek
Our team of expert editors reviewed these high-quality items and handpicked the top 12 combination gas carbon monoxide detectors for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the home improvement category. These include amazon.com, bookworm llc, chipai, zeximaoyi, baoshian electronic, qregqer1, souplop, lenpow and saiyuanxing and taiyuanyongyingshangmaoyouxiangongsi .
We are dedicated to assisting our users in finding the right alarms Products based on their needs, saving them considerable time when choosing which combination gas carbon monoxide detectors to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.
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