Your hardwired alarms are 10 years old or more
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Hardwired Smoke & CO Detectors
Hardwired Smoke & CO Detector Installation in Raleigh, NC
Hardwired smoke and carbon monoxide alarms replaced, added and interconnected, so when one sounds, every alarm in the house sounds with it.
Last Updated: October 2026
Hardwired AlarmsWith battery backup
Smoke & COCombination units installed
InterconnectedEvery alarm on the same signal
One Sounds, All SoundInterconnected through the whole house.
NC Licensed L.32531Electrical Contractor
$1M / $2M CoverageGeneral Liability Insurance
5.0 RatingGoogle Reviews
Since 20186,000+ Jobs Completed
Safety-Driven Electrical Service
Hardwired Smoke & CO Detector Installation Overview
Hardwired smoke alarms run on your home's power, keep a battery as backup, and talk to each other: when one senses smoke, every alarm in the house sounds. We replace worn-out hardwired alarms, swap smoke-only units for smoke and carbon monoxide combinations, and add interconnected alarms where a home is missing them. You buy the alarms; we wire, mount and test every one.
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Interconnected
Every alarm on the same signal, so a fire anywhere is heard everywhere.
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Smoke and CO
Combination alarms for homes with gas appliances, a fireplace or an attached garage.
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Tested Together
Each alarm and the interconnect tested before we leave.
When To Schedule Hardwired Smoke Detector Service
Smoke alarms are easy to forget until one chirps at 3 a.m. Book an electrician if any of these apply:
Check the Date
The manufacture date is printed on the back of every alarm.
10 yrs
When Smoke Alarms Should Be Replaced, From Their Manufacture Date
Signs You Should Book This Service
- Your hardwired alarms are 10 years old or more
- An alarm chirps even with a new battery
- Alarms go off on their own, or one does not set off the others
- Bedrooms or a floor of the house have no smoke alarm
- No carbon monoxide alarm, with gas appliances or an attached garage
- You are buying or selling a home and want the alarms brought up to date
Common Reasons Homeowners Book This Service
Worn-out hardwired alarm replacement, smoke and CO combination upgrades, and new interconnected alarms where bedrooms, hallways or a floor have none.
Cost Overview
Hardwired Smoke Detector Pricing Guidance
Hardwired smoke alarm work in Raleigh, NC is priced per alarm, labor only. You supply the alarms. These are the factors that move the price.
Typical Price Range
$45 – $400
- Per alarm, labor only: $45–$65 to replace one at an existing hardwired location, $250–$400 for a new interconnected location
- You supply the alarms; harder wire runs are confirmed on site
- Replace or Add NewReplacing an alarm at an existing hardwired location is quick; a new location needs a box and a wire run.
- Matching ConnectorsAlarms that fit your existing connectors go in fastest; another brand may need new plates and connectors.
- Attic AccessNew alarms with an attic above are simpler to wire than ceilings with a finished floor over them.
Service Details
What’s Included / What’s Not
Here’s exactly what our standard hardwired smoke detector work includes, and what falls outside it.
Included
Old Alarm RemovalThe old hardwired alarm and its mounting plate removed.
New Alarm InstalledYour new hardwired smoke or smoke/CO alarm wired, mounted and connected to the interconnect.
Wiring CheckedThe connector, box and circuit checked at every location we work on.
Whole-House TestEvery alarm tested, and the interconnect tested so one sets off the rest.
Not Included
The DetectorsYou buy the alarms; we tell you which ones match your existing connectors.
Battery-Only AlarmsPlug-in or battery-only alarms are something you can put up yourself.
Drywall and PaintPatching around a new location beyond the alarm base is a separate trade.
Monitored Alarm SystemsSecurity-company fire panels and monitoring are their own service.
Service Process
How Hardwired Smoke Alarm Work Gets Done Properly
Every smoke alarm job in Raleigh, NC starts with what is already in the ceiling: the connectors, the interconnect wire, and the circuit feeding them.
All of Them, Not OneA new alarm that does not talk to the others only protects one room.
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1
Check Connectors and Circuit
We check the existing connectors, the interconnect wire and the alarm circuit, and tell you which alarms will plug straight into what you have.
Connectors matched Circuit verified -
2
Install and Interconnect
Each alarm is connected and mounted. New locations get a box and a wire run, tied into the interconnect so every alarm shares the signal.
Interconnect wired Mounted firmly -
3
Test the Whole House
Every alarm is tested, and we set one off to confirm the rest sound with it. The circuit is labeled in the panel.
All alarms sound Circuit labeled
Ready to Know Everyone Will Hear It?
Replacing a full set of hardwired alarms is usually done in one visit.
Real Home Gains
Benefits of Hardwired, Interconnected Smoke Alarms
Hardwired smoke and CO alarms in Raleigh, NC give earlier warning in every part of the house than stand-alone battery alarms.
Every LevelBedrooms and Hallways
Where Code Puts ThemIn each bedroom, outside each sleeping area, and on every level of the home, basements included.
Heard in Every RoomA fire in the basement sets off the alarm by the bedrooms too, so nobody sleeps through it.
Smoke and Carbon MonoxideCombination alarms watch for both in homes with gas appliances, a fireplace or an attached garage.
Homeowner Reviews
What Homeowners Say In Recent Reviews Online
Recent reviews from our Google Business Profile. They cover our work across the Triangle rather than this service alone — every card links to the original on Google.
Robyn L
“Electric All Pro helped us out in a time of need. Very professional, polite and timely for their appointments. The technician was very knowledgeable…”
nathan reiser
“Hugo explained everything in detail, knew what was wrong after we explained was was happening and answered questions we had. Will definitely call them…”
Aileen
Rated 5.0 out of 5 based on 175+ Google reviews
Read more reviews on Google
Service Options
Optional Add-Ons for Hardwired Smoke Detectors
These add-ons are commonly recommended with hardwired smoke detector work in Raleigh, NC based on the home.
Smoke and CO Combination Alarms
Replace smoke-only alarms with combination smoke and carbon monoxide alarms at the same locations.
Interconnect the Whole House
Add hardwired alarms where they are missing so every bedroom, hallway and level is on the same signal.
AFCI Protection for Bedroom Circuits
Arc-fault breakers for the bedroom circuits your alarms are on.
Electrical Standards
Smoke & CO Alarm Code Requirements
Smoke and carbon monoxide alarms in North Carolina homes follow the NC Residential Code, and their circuits follow the National Electrical Code.
IRC R314.3
1. Where Smoke Alarms Go
In each bedroom, outside each sleeping area near the bedrooms, and on every level of the home, basements included.
NEC Ref: IRC R314.3
Smoke alarms are required in each sleeping room, outside each separate sleeping area in the immediate vicinity of the bedrooms, and on each additional story of the dwelling, including basements.
IRC R314.4
2. Interconnected
Where more than one alarm is required, they are interconnected so all of them sound when one does.
NEC Ref: IRC R314.4
Where more than one smoke alarm is required in a dwelling unit, the alarm devices shall be interconnected so that actuation of one alarm activates all alarms in the unit.
IRC R315
3. Carbon Monoxide Alarms
Homes with fuel-burning appliances or an attached garage need CO alarms outside each sleeping area.
NEC Ref: IRC R315
Carbon monoxide alarms are required outside each separate sleeping area in dwellings that have fuel-fired appliances or an attached garage.
NEC 210.12(A)
4. Arc-Fault Protection
Bedroom outlets, smoke alarms included, are on AFCI-protected circuits.
NEC Ref: 210.12(A)
120-volt, single-phase, 15- and 20-ampere branch circuits supplying outlets or devices installed in dwelling unit bedrooms and other habitable rooms shall be AFCI protected.
Our License: NC Electrical Contractor License L.32531
Local Coverage
Proudly Serving Raleigh, NC & The Surrounding Triangle
Electric All Pro provides professional hardwired smoke detector installation services throughout Raleigh, NC and the surrounding Triangle. Select your city below to confirm we service your area.
Not sure if we service your area?
Our team covers most of Wake, Durham, and Johnston counties.
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Ready for Alarms Everyone Will Hear?
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(919) 670-4005
Raleigh, NC
Frequently Asked Questions
Common Questions
Common questions from Raleigh homeowners about hardwired smoke and CO alarms.
Still have questions?
Our Raleigh electrical experts are here to help you every step of the way.
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How much does it cost to replace hardwired smoke detectors in Raleigh?
Replacing a hardwired alarm at an existing location is $45–$65 per alarm, labor only. A new interconnected location with a box and wire run is $250–$400 per alarm. You supply the alarms.
How often should hardwired smoke alarms be replaced?
Every 10 years from the manufacture date printed on the back of the alarm, or sooner if one fails its test. Replace them all together so the interconnect keeps working.
Can I put any brand in place of my old alarms?
Hardwired alarms plug into a brand-specific connector. Buying the same brand, or one that fits your connectors, keeps the job quick. Another brand works too; we change the plates and connectors.
Why does my smoke alarm keep chirping?
Usually a low backup battery, or an alarm that has reached the end of its life. If a new battery does not stop it, the alarm itself needs replacing.
Do I need carbon monoxide alarms?
If your home has gas appliances, a fireplace or an attached garage, yes: outside each sleeping area. Combination smoke and CO alarms cover both at the same location.
My alarms are battery-only. Can you make them hardwired?
Yes. We add boxes and run wire to each location and interconnect them, so they work on house power with battery backup and sound together.