SMOKE AND CO DETECTORS
Hardwired smoke and carbon monoxide detector installation, interconnected per code, with battery backup. Required in bedrooms, hallways, and listed locations.
Keil Electric installs hardwired smoke and carbon monoxide detectors across San Diego County and the Austin metro. We wire interconnected detectors per current code (one trips, all alarm), provide battery backup on each unit, and confirm placement against NFPA and local code.
Same scope on either side. Pick the shop that covers your area and we will route you to the right crew.
Bedrooms, hallways outside bedrooms, every story including basement, near the kitchen for combination smoke/CO. CO detectors are required near sleeping areas in every dwelling unit with fuel-burning equipment or attached garages. We map per current code on the site walk.
Code requires hardwired smoke detectors to be interconnected: when one alarm activates, all alarms in the home sound. This is wired with a 3-conductor cable (hot, neutral, interconnect signal) between detectors. We run the interconnect cable during the install.
Every hardwired detector includes a battery backup so it functions during power outages. Modern detectors use 10-year sealed lithium batteries that match the detector replacement cycle. We install detectors with sealed batteries unless the customer prefers user-replaceable.
Smoke detectors are rated for 10 years. The sensor degrades and false-alarms or misses real fires beyond that. We document the install date and brief the customer on the 10-year replacement cycle.
Our crew maps detector locations against current code requirements.
Detector count, type (smoke vs combination smoke/CO), interconnect wiring, and cost.
Cable runs, mounting boxes, detector mounting, interconnect verified.
Test each detector via the test button. Confirm interconnect (one trips, all sound).
Not every job requires a permit. When the local AHJ requires one, we pull it, schedule the inspection, and stay with the job until it passes. No paperwork on you.
Written warranty: 5-year on outlets, fixtures, and EV chargers; 10-year on wire and breakers; lifetime on panelboxes and surge protection. Parts and labor. Transfers with the home.
Battery-only smoke detectors fail when batteries are not maintained. Hardwired detectors with battery backup eliminate that failure mode and are required in new construction and most additions.
Real work from our San Diego and Austin shops. Same standards, same warranty, every job.
For smoke and co detector wiring, here's the honest comparison. We'd tell you the same thing if we weren't trying to win the job.
Most smoke and co detector wiring calls start when the homeowner is planning ahead: a renovation, an addition, an EV charger, a generator, a panel upgrade, or any project where the existing electrical needs to be sized correctly for the new load. The earlier we walk the property, the cleaner the project sequencing. Bringing us in before the drywall closes saves rework. Bringing us in before the contract is signed with the GC saves scope confusion. We are happy to walk a property at the planning stage even if the install is still months out.
A walk of the property with attention to the panel (age, capacity, available breaker space), conduit accessibility, attic / crawlspace conditions, and the load picture (current loads + planned future loads). For installs that touch the service drop, we factor utility coordination from the start. The estimate we leave with is fixed for the scope as walked. Change orders only happen for genuinely new findings during the work, you hear about them before we proceed.
Smoke and CO detector wiring is one of the highest-impact safety installs we do. The cost is modest, the install is fast, and the protection is real. We install interconnected hardwired detectors as standard during any electrical project that involves bedrooms, hallways, or kitchens.
New construction and most renovations require hardwired interconnected detectors with battery backup. Existing homes built before the requirement can keep battery-only detectors but the interconnect protection is meaningful.
Minimum: one in each bedroom, one in each hallway outside bedrooms, one per story. CO detectors near sleeping areas if fuel-burning equipment or attached garage. We map per code on the site walk.
Smoke detectors sense particulate matter from combustion. CO detectors sense carbon monoxide gas. Combination detectors do both. CO is required where fuel-burning appliances or attached garages exist.
Every 10 years per NFPA. The sensor degrades over time. We document install dates so you know when to replace.
Wireless-interconnect detectors can join an existing system without rewiring. Hardwired interconnect requires a 3-conductor cable between detectors. We pick the right path per home.
A licensed electrician maps detector locations against current code and writes the install in fixed-price terms.
