Best Carbon and Smoke Detectors Updated February 2026
Advertiser disclosure About our rankings

Join the millions that have trusted BuyersGuide.org to help them make smarter buying decisions. Let our independent expert reviews and data-driven shopping recommendations help you find the one that's right for you.

Best Carbon and Smoke Detectors
2026 Buyer's GuideUpdated February 2026
Advertiser disclosure About our rankings
Sort by:
Best Overall
1

10.0

2 Packs, 2 in 1 CO & Smoke Detectors,Carbon Monoxide Detectors,Smoke Detector Battery Powered,（Include 3 * 1.5V AA Battery）,85 ...
Ease of installation
Quality
Functionality
Value for money
Mounting hardware
Noise level
1K+ bought in past month
Best Overall

10.0

1
2 Packs, 2 in 1 CO & Smoke Detectors,Carbon Monoxide Detectors,Smoke Detector Battery Powered,（Include 3 * 1.5V AA Battery）,85 ...
Ease of installation
Quality
Functionality
Value for money
Mounting hardware
Noise level
1K+ bought in past month
Best Overall

10.0

1
2 Packs, 2 in 1 CO & Smoke Detectors,Carbon Monoxide Detectors,Smoke Detector Battery Powered,（Include 3 * 1.5V AA Battery）,85 ...
Available in:  3 sizes
Ease of installation
Quality
Functionality
Value for money
Mounting hardware
Noise level
1K+ bought in past month
2

9.9

4-Pack,Smoke and Carbon Monoxide Detector,2 in 1 CO & Smoke Alarm,Carbon Monoxide Detectors,Smoke Detector,85dB in Alarm,LCD Sc...
Smoke detector quality
Ease of installation
Value for money
Size
Save 24%

9.9

2
4-Pack,Smoke and Carbon Monoxide Detector,2 in 1 CO & Smoke Alarm,Carbon Monoxide Detectors,Smoke Detector,85dB in Alarm,LCD Sc...
Smoke detector quality
Ease of installation
Value for money
Size
Save 24%

9.9

2
4-Pack,Smoke and Carbon Monoxide Detector,2 in 1 CO & Smoke Alarm,Carbon Monoxide Detectors,Smoke Detector,85dB in Alarm,LCD Sc...
Available in:  2 colors
Smoke detector quality
Ease of installation
Value for money
Size
Save 24%
3

9.7

2Packs, Smoke and Carbon Monoxide Detector, LCD Digital Display, 2 in 1 Technology, Easy to Use, 85db Alarm, for Home and Kitch...
Functionality
Smoke detector quality
Ease of installation
Value for money
Detection accuracy
Battery life

9.7

3
2Packs, Smoke and Carbon Monoxide Detector, LCD Digital Display, 2 in 1 Technology, Easy to Use, 85db Alarm, for Home and Kitch...
Functionality
Smoke detector quality
Ease of installation
Value for money
Detection accuracy
Battery life

9.7

3
2Packs, Smoke and Carbon Monoxide Detector, LCD Digital Display, 2 in 1 Technology, Easy to Use, 85db Alarm, for Home and Kitch...
Available in:  3 colors
Functionality
Smoke detector quality
Ease of installation
Value for money
Detection accuracy
Battery life
Premium Pick
4

9.6

6 Packs,2 in 1 Technology, Smoke,Carbon Monoxide Detector, Co Alarm,85db Alert,LCD Readout,3 Color LED Indication,(Green Light ...
Smoke detector quality
Value for money
Ease of installation
Premium Pick

9.6

4
6 Packs,2 in 1 Technology, Smoke,Carbon Monoxide Detector, Co Alarm,85db Alert,LCD Readout,3 Color LED Indication,(Green Light ...
Smoke detector quality
Value for money
Ease of installation
Premium Pick

9.6

4
6 Packs,2 in 1 Technology, Smoke,Carbon Monoxide Detector, Co Alarm,85db Alert,LCD Readout,3 Color LED Indication,(Green Light ...
Available in:  4 sizes
Smoke detector quality
Value for money
Ease of installation
5

9.5

KIMROG 10-Year Sealed Battery 2-in-1 Smoke & Carbon Monoxide Detector Alarm | Home/Garage Combo CO & Smoke Alarm Detector with ...
Ease of installation
Smoke detector quality
10% Coupon

9.5

5
KIMROG 10-Year Sealed Battery 2-in-1 Smoke & Carbon Monoxide Detector Alarm | Home/Garage Combo CO & Smoke Alarm Detector with ...
Ease of installation
Smoke detector quality
10% Coupon

9.5

5
KIMROG 10-Year Sealed Battery 2-in-1 Smoke & Carbon Monoxide Detector Alarm | Home/Garage Combo CO & Smoke Alarm Detector with ...
Available in:  2 sizes
Ease of installation
Smoke detector quality
10% Coupon
6

9.4

4 Pack Combination Smoke and Carbon Monoxide Detector Battery Operated, Travel Portable Photoelectric Fire&Co Alarm for Home, K...
Ease of installation
Value for money
Smoke detector quality
Battery life
Noise level
Save 19%

9.4

6
4 Pack Combination Smoke and Carbon Monoxide Detector Battery Operated, Travel Portable Photoelectric Fire&Co Alarm for Home, K...
Ease of installation
Value for money
Smoke detector quality
Battery life
Noise level
Save 19%

9.4

6
4 Pack Combination Smoke and Carbon Monoxide Detector Battery Operated, Travel Portable Photoelectric Fire&Co Alarm for Home, K...
Ease of installation
Value for money
Smoke detector quality
Battery life
Noise level
Save 19%
7

9.2

3-Pack Smoke Detector Carbon Monoxide Detector Combo 10 Year Battery, Test/Silence Button, Smoke Alarm and CO Detector for Any ...
Ease of installation
Smoke detector
Functionality
Battery life
Value for money
Display quality
Save 13%

9.2

7
3-Pack Smoke Detector Carbon Monoxide Detector Combo 10 Year Battery, Test/Silence Button, Smoke Alarm and CO Detector for Any ...
Ease of installation
Smoke detector
Functionality
Battery life
Value for money
Display quality
Save 13%

9.2

7
3-Pack Smoke Detector Carbon Monoxide Detector Combo 10 Year Battery, Test/Silence Button, Smoke Alarm and CO Detector for Any ...
Available in:  4 sizes
Ease of installation
Smoke detector
Functionality
Battery life
Value for money
Display quality
Save 13%
Popular
8

9.1

Kidde Smoke & Carbon Monoxide Detector, 10-Year Battery Powered, LED Warning Light Indicators, 30CUD10
Ease of installation
Quality
Safety
Read Full Review
Save 15%
Popular

9.1

8
Kidde Smoke & Carbon Monoxide Detector, 10-Year Battery Powered, LED Warning Light Indicators, 30CUD10
Ease of installation
Quality
Safety
Save 15%
Read Full Review
Popular

9.1

8
Kidde Smoke & Carbon Monoxide Detector, 10-Year Battery Powered, LED Warning Light Indicators, 30CUD10
Available in:  4 sizes ,  2 options
Read Full Review
Ease of installation
Quality
Safety
Save 15%
Best Value
9

9.0

10-Year Battery Smoke and Carbon Monoxide Detector 2-in-1 with Digital Display, 85dB Visual & Audible Alarm, Easy Setup for Liv...
Ease of installation
Safety
Smoke detection
Noise level
Functionality
Value for money
Save 5%
Best Value

9.0

9
10-Year Battery Smoke and Carbon Monoxide Detector 2-in-1 with Digital Display, 85dB Visual & Audible Alarm, Easy Setup for Liv...
Ease of installation
Safety
Smoke detection
Noise level
Functionality
Value for money
Save 5%
Best Value

9.0

9
10-Year Battery Smoke and Carbon Monoxide Detector 2-in-1 with Digital Display, 85dB Visual & Audible Alarm, Easy Setup for Liv...
Available in:  2 styles
Ease of installation
Safety
Smoke detection
Noise level
Functionality
Value for money
Save 5%
10

8.9

3 Packs Smoke and Carbon Monoxide Detector Powered by Battery,Portable Smoke Detector Carbon Monoxide Detector Combo with Large...
Ease of installation
Smoke detector quality
Value for money
Size
Save 20%

8.9

10
3 Packs Smoke and Carbon Monoxide Detector Powered by Battery,Portable Smoke Detector Carbon Monoxide Detector Combo with Large...
Ease of installation
Smoke detector quality
Value for money
Size
Save 20%

8.9

10
3 Packs Smoke and Carbon Monoxide Detector Powered by Battery,Portable Smoke Detector Carbon Monoxide Detector Combo with Large...
Available in:  4 colors
Ease of installation
Smoke detector quality
Value for money
Size
Save 20%

Our Top Choice

Best Overall
1

10.0

2 Packs, 2 in 1 CO & Smoke Detectors,Carbon Monoxide Detectors,Smoke Detector Battery Powered,（Include 3 * 1.5V AA Battery）,85 ...
Ease of installation
Quality
Functionality
Value for money
Mounting hardware
Noise level
1K+ bought in past month
Best Overall

10.0

1
2 Packs, 2 in 1 CO & Smoke Detectors,Carbon Monoxide Detectors,Smoke Detector Battery Powered,（Include 3 * 1.5V AA Battery）,85 ...
Ease of installation
Quality
Functionality
Value for money
Mounting hardware
Noise level
1K+ bought in past month
Best Overall

10.0

1
2 Packs, 2 in 1 CO & Smoke Detectors,Carbon Monoxide Detectors,Smoke Detector Battery Powered,（Include 3 * 1.5V AA Battery）,85 ...
Available in:  3 sizes
Ease of installation
Quality
Functionality
Value for money
Mounting hardware
Noise level
1K+ bought in past month
Related Categories
Smoke and Carbon Monoxide AlarmSmoke Alarm and Carbon Monoxide DetectorSmoke Detector & Carbon Monoxide Detector ComboSmoke Detector Co2 ComboSmoke Detector (All)CO Smoke Detector Combo
How We Rank
Expert Analysis
Our team of experts highlights useful information so you can easily compare products to find the one that's right for you.

Award-Winning Tech
Our technology analyzes thousands of purchase trends to bring you the top product recommendations.

Why Trust Our Reviews?
1,000,000+ shoppers use Buyer's Guide every week to find the best products and services online.

Learn more about our rankings.

Reliable, Safe & Secure
Helping millions of users make smarter purchases online.
Related Categories
Smoke and Carbon Monoxide AlarmSmoke Alarm and Carbon Monoxide DetectorSmoke Detector & Carbon Monoxide Detector ComboSmoke Detector Co2 ComboSmoke Detector (All)CO Smoke Detector Combo
Related Categories
Smoke and Carbon Monoxide AlarmSmoke Alarm and Carbon Monoxide DetectorSmoke Detector & Carbon Monoxide Detector ComboSmoke Detector Co2 ComboSmoke Detector (All)CO Smoke Detector Combo