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10 bestCo Detector Home Depotof December 2025

112M consumers helped this year.

5% off

1

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

First Alert

9.8

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2

Combination Smoke and Carbon Monoxide Detector Alarm, 2-Pack Beeps Warning Smoke and CO Alarms for Basements Travel Home Office House Bedroom Living Room Car, Battery Operated, Comply with UL 217/2034
Combination Smoke and Carbon Monoxide Detector Alarm, 2-Pack Beeps Warning Smoke and CO Alarms for Basements Travel Home Office House Bedroom Living Room Car, Battery Operated, Comply with UL 217/2034

GLBSUNION

9.6

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3

First Alert Battery Operated Smoke and Carbon Monoxide Alarm, White, PRC700A-6
First Alert Battery Operated Smoke and Carbon Monoxide Alarm, White, PRC700A-6

First Alert

9.3

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4

DYWL SECURITY Carbon Monoxide Detectors Portable Carbon Monoxide Detector for Travel Carbon Monoxide Detector Plug in Wall with LED Digital Display Voice Light Plug and Play - 2Pack
DYWL SECURITY Carbon Monoxide Detectors Portable Carbon Monoxide Detector for Travel Carbon Monoxide Detector Plug in Wall with LED Digital Display Voice Light Plug and Play - 2Pack

DYWL SECURITY

9.0

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5

First Alert Battery Operated Wireless Interconnect Smoke and Carbon Monoxide Alarm
First Alert Battery Operated Wireless Interconnect Smoke and Carbon Monoxide Alarm

First Alert

8.8

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Plug in Carbon Monoxide Detector 3in1 CO Temperature Humidity Monitor with 2.1'' HD Screen & Indicator Visual&Audible Alarm for Home Travel Hotel RV

Plug in Carbon Monoxide Detector 3in1 CO Temperature Humidity Monitor with 2.1'' HD Screen & Indicator Visual&Audible Alarm for Home Travel Hotel RV

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LSENLTY Carbon Monoxide Detector, High Accuracy CO Detector with Digital LCD Display, 3-in-1 Air Quality Monitor(CO, Temperature and Humidity Sensor), CO Alarm Detector for Home Kitchen Travel

LSENLTY Carbon Monoxide Detector, High Accuracy CO Detector with Digital LCD Display, 3-in-1 Air Quality Monitor(CO, Temperature and Humidity Sensor), CO Alarm Detector for Home Kitchen Travel

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Plug in Carbon Monoxide Detector & Natural Gas Combination Detectors 4in1 CO Gas Temp Humidity Monitor with 2.1'' HD Screen & Indicator CO, Propane, Methane Explosive Gas Alarm

Plug in Carbon Monoxide Detector & Natural Gas Combination Detectors 4in1 CO Gas Temp Humidity Monitor with 2.1'' HD Screen & Indicator CO, Propane, Methane Explosive Gas Alarm

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Kidde Battery-Operated Carbon Monoxide Alarm with Digital Dis

Kidde Battery-Operated Carbon Monoxide Alarm with Digital Dis

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6

Kidde 900-0263CO-CA Plug-in Carbon Monoxide Alarm (KN-COB-DP2CA), White, 1 Units
Kidde 900-0263CO-CA Plug-in Carbon Monoxide Alarm (KN-COB-DP2CA), White, 1 Units

Kidde

8.5

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12% off

7

First Alert CO400A Battery Powered Carbon Monoxide Alarm
First Alert CO400A Battery Powered Carbon Monoxide Alarm

First Alert

8.2

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8

Photoelectric Smoke Detector and Smoke Alarm Battery Operated, UL Listed Sensor Fire Alarms with Test Button for Home Depot Hotel School, 10 Year Smoke Detector 3 Pack
Photoelectric Smoke Detector and Smoke Alarm Battery Operated, UL Listed Sensor Fire Alarms with Test Button for Home Depot Hotel School, 10 Year Smoke Detector 3 Pack

wsdcam

7.9

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9

TopTes CT-300 Portable Carbon Monoxide Detector, CO Detector with Audible & Visual Alarm, 0-5000PPM, CO Alarm, Backlit LCD Screen, for Home, Car, Camping& Travel (Includes Battery x3) - Orange
TopTes CT-300 Portable Carbon Monoxide Detector, CO Detector with Audible & Visual Alarm, 0-5000PPM, CO Alarm, Backlit LCD Screen, for Home, Car, Camping& Travel (Includes Battery x3) - Orange

TOPTES

7.6

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26% off

10

First Alert Battery Operated Carbon Monoxide Alarm with Digital Display
First Alert Battery Operated Carbon Monoxide Alarm with Digital Display

sufe

7.3

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