Scenario 01
Up to 4 smoke alarms
Up to 1 hour
$159max
$159 first hour
Book thisBased in San Diego, CA · Serving San Diego County Licensed C-10 Electrical · C-36 Plumbing · CSLB #1120052
Mon–Fri 8:00–5:30 · Book online 24/7 Text a human, not AI
Comfort & Security · San Diego, CA
Smoke and CO alarms expire, chirp and fail. We replace hardwired and battery alarms, add carbon monoxide detectors, and test the whole set so they sound together.


Typical time
~1 hr
The short answer
Switch Your Fixture installs and replaces smoke alarms and carbon monoxide detectors in San Diego homes. On our estimator, up to four smoke alarms or a CO detector take about an hour, inside the $159 service call; up to eight alarms take under two hours. We replace expired units, match hardwired connectors, interconnect alarms and test every one.
Bought the wrong size? Only a 15-minute consultation fee, and we rebook.
At a glance
What’s included in smoke & CO detector installation
Every visit follows the same checklist, so nothing gets skipped and you know exactly what you’re paying for.
Expired or chirping alarms removed
Hardwired adapters matched or replaced
New alarms mounted and interconnected
CO detectors placed near sleeping areas
Every alarm tested
Old units bagged for disposal
Smoke & CO Alarms cost in San Diego
Up to 4 smoke alarms or a CO detector in about 1 hour; up to 8 alarms in under 2 hours.
Planning estimates from our published rate. Your bill follows the real time on site in 15-minute increments, and if a fixture doesn’t fit you only pay a 15-minute consultation fee.

Before we leave
Installed, set up and tested with you, so you know how it works.
Types of smoke & CO alarms we install
120V interconnected alarms replaced with battery backup.
Two-in-one alarms for hallways and bedrooms.
Nest Protect and app-connected alarms set up.
10-year sealed battery alarms for rooms without wiring.


Why San Diego chooses us
How long does it take?
Up to 4 smoke alarms or a CO detector in about 1 hour; up to 8 alarms in under 2 hours.
5.0 on Google
“I am happy with the work they performed and recommend their services for your home needs. I will definitely call on them again in the future. Great job guys!”
Mary M.
Customer testimonial · I will call them again
“Clean, pleasant, on time. Great job! Will definitely use again and again!”
Smoke & CO Alarms FAQ
Straight answers about smoke & CO detector installation in San Diego.
Up to four smoke alarms, or a CO detector, fit in the about-1-hour group on our estimator. Up to eight alarms fit in under two hours.
A chirp usually means a low battery or an expired alarm. Most alarms need replacing every 10 years; the date is printed on the back.
Yes. Different brands use different wiring connectors, so we swap the adapter as well to keep alarms interconnected.
Switch Your Fixture charges a $159 service call that includes the first hour of labor. Additional labor is $159 per hour, billed in 15-minute increments of $39.75. Every service is billed at the same rate, so you can add up the time for your fixtures and multiply by the hourly rate to build your own estimate.
Our service call includes an hour of labor to install your fixture. If it takes less than an hour, we offer other services to fill the time, such as changing bulbs, swapping switch plates or hanging a picture. Additional labor is billed in 15-minute increments at our hourly rate.
If we arrive and your fixture doesn’t fit, we only charge a 15-minute consultation fee ($39.75). The consultation gives you the information you need to buy the correct fixture, and we rebook your install.
Yes, that’s what we do. Every fixture is billed at the same rate, so put your whole list in one request: a fan, a faucet, a TV and a doorbell can all go in on the same trip under one service call.
Yes. We warranty all of our installations. If something we installed is not working the way it should, call or text (619) 677-8677 and we will come back and make it right.
Do you need a different kind of install?
Same $159 rate in every neighborhood
Book online 24/7
Tell us what you bought and when suits you. $159 service call with the first hour included, then $39.75 per 15 minutes. Text or call a human, never a bot.

