Best Hardwired Smoke Alarms Updated April 2026
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Best Hardwired Smoke Alarms
2026 Buyer's GuideUpdated April 2026
Advertiser disclosure About our rankings
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Best Hardwired Smoke Alarm
Premium Pick
1

10.0

First Alert BRK SMI100-AC Hardwired Smoke Detector with Battery Backup, 6-Pack
Installation
Reliability
Quality
Value for money
Connectivity
Replacement
Read Full Review
-20%
3K+ bought in past month
Best Hardwired Smoke Alarm
Premium Pick

10.0

1
First Alert BRK SMI100-AC Hardwired Smoke Detector with Battery Backup, 6-Pack
Installation
Reliability
Quality
Value for money
Connectivity
Replacement
3K+ bought in past month
-20%
Read Full Review
Best Hardwired Smoke Alarm
Premium Pick

10.0

1
First Alert BRK SMI100-AC Hardwired Smoke Detector with Battery Backup, 6-Pack
Read Full Review
Installation
Reliability
Quality
Value for money
Connectivity
Replacement
3K+ bought in past month
-20%
2

9.9

First Alert SC-9120B Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup 2 Pack
Reliability
Installation
Quality
Value for money
Connectivity
-27%

9.9

2
First Alert SC-9120B Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup 2 Pack
Reliability
Installation
Quality
Value for money
Connectivity
-27%

9.9

2
First Alert SC-9120B Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup 2 Pack
Available in:  2 sizes
Reliability
Installation
Quality
Value for money
Connectivity
-27%
3

9.7

Kidde Smoke and Carbon Monoxide Detector, Hardwired with 10-Year Battery Backup, Voice Alerts, LED Status Lights, Interconnecte...
Installation
Quality
Battery life
Replacement
Read Full Review

9.7

3
Kidde Smoke and Carbon Monoxide Detector, Hardwired with 10-Year Battery Backup, Voice Alerts, LED Status Lights, Interconnecte...
Installation
Quality
Battery life
Replacement
Read Full Review

9.7

3
Kidde Smoke and Carbon Monoxide Detector, Hardwired with 10-Year Battery Backup, Voice Alerts, LED Status Lights, Interconnecte...
Available in:  2 sizes
Read Full Review
Installation
Quality
Battery life
Replacement
4

9.4

Kidde Smoke and Carbon Monoxide Detector, Hardwired with 10-Year Battery Backup, LED Status Lights, Interconnected, 85 dB Alarm...
Installation
Quality
Battery life
Read Full Review
-7%

9.4

4
Kidde Smoke and Carbon Monoxide Detector, Hardwired with 10-Year Battery Backup, LED Status Lights, Interconnected, 85 dB Alarm...
Installation
Quality
Battery life
-7%
Read Full Review

9.4

4
Kidde Smoke and Carbon Monoxide Detector, Hardwired with 10-Year Battery Backup, LED Status Lights, Interconnected, 85 dB Alarm...
Available in:  2 sizes
Read Full Review
Installation
Quality
Battery life
-7%
5

9.3

BRK First Alert Smoke Alarm, Interconnect Hardwire Detector with Battery Backup, SMI100-AC, 3-Pack
Installation
Quality
Reliability
Value for money
Easy replacement
Fit
-32%

9.3

5
BRK First Alert Smoke Alarm, Interconnect Hardwire Detector with Battery Backup, SMI100-AC, 3-Pack
Installation
Quality
Reliability
Value for money
Easy replacement
Fit
-32%

9.3

5
BRK First Alert Smoke Alarm, Interconnect Hardwire Detector with Battery Backup, SMI100-AC, 3-Pack
Available in:  2 styles ,  4 sizes ,  3 options
Installation
Quality
Reliability
Value for money
Easy replacement
Fit
-32%
6

9.1

Kidde Smoke Detector, Hardwired with 10-Year Battery Backup, Interconnectable, LED Status Lights, 85 dB Alarm, 5-inches, 20SA10...
Ease of installation
Smoke detector
Value for money
-14%

9.1

6
Kidde Smoke Detector, Hardwired with 10-Year Battery Backup, Interconnectable, LED Status Lights, 85 dB Alarm, 5-inches, 20SA10...
Ease of installation
Smoke detector
Value for money
-14%

9.1

6
Kidde Smoke Detector, Hardwired with 10-Year Battery Backup, Interconnectable, LED Status Lights, 85 dB Alarm, 5-inches, 20SA10...
Available in:  2 sizes
Ease of installation
Smoke detector
Value for money
-14%
7

9.0

BRK First Alert 9120BFF/ SMI100-AC Smoke Detector, Hardwired Alarm with Battery Backup, White, 1-Pack
Ease of installation
Functionality
Smoke detector quality
Value for money
Replacement value
Wiring

9.0

7
BRK First Alert 9120BFF/ SMI100-AC Smoke Detector, Hardwired Alarm with Battery Backup, White, 1-Pack
Ease of installation
Functionality
Smoke detector quality
Value for money
Replacement value
Wiring

9.0

7
BRK First Alert 9120BFF/ SMI100-AC Smoke Detector, Hardwired Alarm with Battery Backup, White, 1-Pack
Ease of installation
Functionality
Smoke detector quality
Value for money
Replacement value
Wiring
8

8.8

Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup Smoke Alarm, Interconnectable, LED Warning Light Indicators...
Installation
Quality
Replacement
-5%

8.8

8
Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup Smoke Alarm, Interconnectable, LED Warning Light Indicators...
Installation
Quality
Replacement
-5%

8.8

8
Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup Smoke Alarm, Interconnectable, LED Warning Light Indicators...
Available in:  3 sizes ,  2 styles
Installation
Quality
Replacement
-5%
Best Value
9

8.7

First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 1-Pack
Installation
Quality
Reliability
Value for money
Easy replacement
Fit
-33%
Best Value

8.7

9
First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 1-Pack
Installation
Quality
Reliability
Value for money
Easy replacement
Fit
-33%
Best Value

8.7

9
First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 1-Pack
Available in:  4 sizes ,  2 styles ,  3 options
Installation
Quality
Reliability
Value for money
Easy replacement
Fit
-33%
Popular
10

8.5

First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup, SMICO100-AC, 1-Pack
Ease of installation
Replacement value
Read Full Review
-23%
Popular

8.5

10
First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup, SMICO100-AC, 1-Pack
Ease of installation
Replacement value
-23%
Read Full Review
Popular

8.5

10
First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup, SMICO100-AC, 1-Pack
Available in:  4 sizes ,  2 styles ,  5 options
Read Full Review
Ease of installation
Replacement value
-23%

Our Top Choice

Best Hardwired Smoke Alarm
Premium Pick
1

10.0

First Alert BRK SMI100-AC Hardwired Smoke Detector with Battery Backup, 6-Pack
Installation
Reliability
Quality
Value for money
Connectivity
Replacement
Read Full Review
-20%
3K+ bought in past month
Best Hardwired Smoke Alarm
Premium Pick

10.0

1
First Alert BRK SMI100-AC Hardwired Smoke Detector with Battery Backup, 6-Pack
Installation
Reliability
Quality
Value for money
Connectivity
Replacement
3K+ bought in past month
-20%
Read Full Review
Best Hardwired Smoke Alarm
Premium Pick

10.0

1
First Alert BRK SMI100-AC Hardwired Smoke Detector with Battery Backup, 6-Pack
Read Full Review
Installation
Reliability
Quality
Value for money
Connectivity
Replacement
3K+ bought in past month
-20%
Related Categories
Hardwired Smoke DetectorHardwired Smoke DetectorHardwired Dual Sensor Smoke AlarmFirst Alert Smoke AlarmFirst Alert 9120B Smoke DetectorKidde Smoke Detector
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Related Categories
Hardwired Smoke DetectorHardwired Smoke DetectorHardwired Dual Sensor Smoke AlarmFirst Alert Smoke AlarmFirst Alert 9120B Smoke DetectorKidde Smoke Detector
Related Categories
Hardwired Smoke DetectorHardwired Smoke DetectorHardwired Dual Sensor Smoke AlarmFirst Alert Smoke AlarmFirst Alert 9120B Smoke DetectorKidde Smoke Detector