Best Combo Smoke Detectors Updated February 2026
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Best Combo Smoke Detectors
2026 Buyer's GuideUpdated February 2026
Advertiser disclosure About our rankings
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Best Combo Smoke Detector
Premium Pick
1

10.0

Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup Smoke Alarm, Interconnectable, LED Warning Light Indicators...
Ease of installation
Smoke detector quality
Quality
4K+ bought in past month
Best Combo Smoke Detector
Premium Pick

10.0

1
Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup Smoke Alarm, Interconnectable, LED Warning Light Indicators...
Ease of installation
Smoke detector quality
Quality
4K+ bought in past month
Best Combo Smoke Detector
Premium Pick

10.0

1
Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup Smoke Alarm, Interconnectable, LED Warning Light Indicators...
Available in:  2 styles ,  3 sizes
Ease of installation
Smoke detector quality
Quality
4K+ bought in past month
2

9.7

Kidde Smoke & Carbon Monoxide Detector, AA Battery Powered, LED Warning Light Indicators, 2 Pack
Ease of installation
Quality
Value for money
Battery life
Safety
Lifespan
Read Full Review

9.7

2
Kidde Smoke & Carbon Monoxide Detector, AA Battery Powered, LED Warning Light Indicators, 2 Pack
Ease of installation
Quality
Value for money
Battery life
Safety
Lifespan
Read Full Review

9.7

2
Kidde Smoke & Carbon Monoxide Detector, AA Battery Powered, LED Warning Light Indicators, 2 Pack
Available in:  2 sizes
Read Full Review
Ease of installation
Quality
Value for money
Battery life
Safety
Lifespan
3

9.5

5 Packs,Smoke Detector Carbon Monoxide Detector Combo,2-in-1 Detection,85 dB Alarm,LED Indication,LCD Digital Displays,Battery ...
Smoke detector quality
Value for money
Ease of installation

9.5

3
5 Packs,Smoke Detector Carbon Monoxide Detector Combo,2-in-1 Detection,85 dB Alarm,LED Indication,LCD Digital Displays,Battery ...
Smoke detector quality
Value for money
Ease of installation

9.5

3
5 Packs,Smoke Detector Carbon Monoxide Detector Combo,2-in-1 Detection,85 dB Alarm,LED Indication,LCD Digital Displays,Battery ...
Available in:  4 sizes
Smoke detector quality
Value for money
Ease of installation
4

9.4

6 Packs, 2 in 1,Smoke Carbon Monoxide Detector,Carbon Monoxide Detectors/Smoke Alarm,85 dB Alarm,Large Screen Readout,Test Butt...
Ease of installation
Quality
Functionality
Value for money
Mounting hardware
Noise level

9.4

4
6 Packs, 2 in 1,Smoke Carbon Monoxide Detector,Carbon Monoxide Detectors/Smoke Alarm,85 dB Alarm,Large Screen Readout,Test Butt...
Ease of installation
Quality
Functionality
Value for money
Mounting hardware
Noise level

9.4

4
6 Packs, 2 in 1,Smoke Carbon Monoxide Detector,Carbon Monoxide Detectors/Smoke Alarm,85 dB Alarm,Large Screen Readout,Test Butt...
Available in:  3 sizes
Ease of installation
Quality
Functionality
Value for money
Mounting hardware
Noise level
5

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

5
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

5
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%
6

9.1

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

9.1

6
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

9.1

6
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
Best Value
7

9.0

3 Packs, Smoke and CO Alarm,Smoke and Carbon Monoxide Detector,2 in 1,Smoke Detector Carbon Monoxide Detector Combo,85 db Alarm...
Functionality
Smoke detector
Ease of installation
Value for money
Battery life
Loudness
Best Value

9.0

7
3 Packs, Smoke and CO Alarm,Smoke and Carbon Monoxide Detector,2 in 1,Smoke Detector Carbon Monoxide Detector Combo,85 db Alarm...
Functionality
Smoke detector
Ease of installation
Value for money
Battery life
Loudness
Best Value

9.0

7
3 Packs, Smoke and CO Alarm,Smoke and Carbon Monoxide Detector,2 in 1,Smoke Detector Carbon Monoxide Detector Combo,85 db Alarm...
Available in:  3 colors
Functionality
Smoke detector
Ease of installation
Value for money
Battery life
Loudness
8

8.9

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%

8.9

8
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%

8.9

8
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%
9

8.7

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%

8.7

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%

8.7

9
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%
Popular
10

8.1

Kidde Smoke Detector, AA Battery Powered, LED Warning Light Indicators, 1 Pack, White, 30CUAR
Ease of installation
Smoke detector quality
Quality
Popular

8.1

10
Kidde Smoke Detector, AA Battery Powered, LED Warning Light Indicators, 1 Pack, White, 30CUAR
Ease of installation
Smoke detector quality
Quality
Popular

8.1

10
Kidde Smoke Detector, AA Battery Powered, LED Warning Light Indicators, 1 Pack, White, 30CUAR
Available in:  2 styles ,  3 sizes
Ease of installation
Smoke detector quality
Quality

Our Top Choice

Best Combo Smoke Detector
Premium Pick
1

10.0

Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup Smoke Alarm, Interconnectable, LED Warning Light Indicators...
Ease of installation
Smoke detector quality
Quality
4K+ bought in past month
Best Combo Smoke Detector
Premium Pick

10.0

1
Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup Smoke Alarm, Interconnectable, LED Warning Light Indicators...
Ease of installation
Smoke detector quality
Quality
4K+ bought in past month
Best Combo Smoke Detector
Premium Pick

10.0

1
Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup Smoke Alarm, Interconnectable, LED Warning Light Indicators...
Available in:  2 styles ,  3 sizes
Ease of installation
Smoke detector quality
Quality
4K+ bought in past month
Related Categories
CO Smoke Detector ComboSmoke Detector & Carbon Monoxide Detector ComboCarbon and Smoke DetectorSmoke and Carbon Monoxide AlarmSmoke Detector (All)Combined Smoke and Carbon Monoxide Alarm
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Related Categories
CO Smoke Detector ComboSmoke Detector & Carbon Monoxide Detector ComboCarbon and Smoke DetectorSmoke and Carbon Monoxide AlarmSmoke Detector (All)Combined Smoke and Carbon Monoxide Alarm
Related Categories
CO Smoke Detector ComboSmoke Detector & Carbon Monoxide Detector ComboCarbon and Smoke DetectorSmoke and Carbon Monoxide AlarmSmoke Detector (All)Combined Smoke and Carbon Monoxide Alarm