Smoke alarms have a service life, and it is shorter than most homeowners realize. The sensing elements degrade whether or not the alarm has ever sounded, which means a unit that chirps when you test it can still be well past the point where it should have been replaced.
Our licensed electricians install and replace hardwired and interconnected smoke alarm systems in homes throughout Fort Myers, Estero, Bonita Springs, Naples, Sanibel Island, and Captiva Island. That includes bringing older homes up to current placement requirements, replacing aged units, and handling the alarm systems on new construction and remodel projects.
This is inexpensive work with a meaningful outcome, and it is one of the few electrical projects where the value is measured in the minutes of warning it provides rather than in convenience or efficiency.

The two things that matter most in a smoke alarm system are placement and interconnection. Current requirements call for an alarm inside each sleeping room, one outside each sleeping area, and at least one on every level of the home. Older houses were frequently built with far fewer, and a home built in the 1970s or 1980s may have a single alarm in a hallway doing work that current standards would spread across five or six devices.
Interconnection is the part homeowners underestimate. When alarms are interconnected, any one of them detecting smoke sounds all of them, which means a fire starting in a garage or a back bedroom wakes people at the other end of the house immediately rather than after the smoke has traveled far enough to reach them. Hardwired systems interconnect over a dedicated conductor, and wireless interconnected units are an option in homes where running that conductor is impractical. Either approach is a substantial improvement over standalone alarms operating independently.
A few findings should prompt a call. Alarms carry a manufacture date on the back, and units past ten years should be replaced rather than tested and kept, because the sensing element degrades regardless of whether the alarm has ever sounded. Many older Southwest Florida homes have alarms in hallways only, with none inside the bedrooms where current placement requirements call for them. If one alarm sounding does not trigger the others, your system is not interconnected, and establishing that is the single most valuable upgrade available in an existing home. And repeated nuisance alarms usually point to a placement problem or a unit at end of life, which matters because a homeowner who disconnects a nuisance alarm rarely reconnects it.
We install hardwired alarms with battery backup, interconnected so that any device detecting smoke sounds every alarm in the home. This is the configuration current code requires in new construction and the one we recommend wherever it is practical to install.
Alarms past ten years from their manufacture date should be replaced regardless of whether they still test. We replace units throughout the home at once rather than piecemeal, since alarms installed together generally reach end of life together.
Older homes frequently lack alarms inside bedrooms or on secondary levels. We add devices to bring placement in line with current requirements, running new circuits and interconnect conductors where the layout allows.
Where the wiring can be run practically, converting to hardwired alarms with battery backup removes the dead battery failure mode entirely. In homes where running conductors is impractical, we install wireless interconnected units as the alternative.
Alarm placement and interconnection are part of every new construction and renovation rough in we perform. Doing it during construction is the only time the ideal layout costs nothing extra to achieve.
Alarms that sound without cause usually have a placement, age, or environmental explanation. We identify the reason and correct it, because an alarm a family has disconnected out of frustration is providing no protection at all.
Smoke alarms are simple devices installed in a way that requires understanding a floor plan. Placement is governed by where people sleep, where cooking and bathing produce nuisance triggers, how air moves through the home, and where a fire is most likely to start. Our licensed electricians install to those requirements rather than mounting devices where the existing boxes happen to be, which is how a lot of older homes ended up with the coverage they have.
Because new construction has been our core business since 1995, we have designed alarm layouts for hundreds of homes in this market and coordinated the inspections that verify them. That experience carries directly into retrofit work, where the challenge is achieving proper coverage in a home that was never wired for it.
EXCELLENT Based on 315 reviews Posted on Google dan pleinTrustindex verifies that the original source of the review is Google. Germayne T. was very professional, courteous, and extremely efficient replacing two ceiling fans for us. Will definitely use Mabry and Germaine again.Posted on Google Andrew MacaninchTrustindex verifies that the original source of the review is Google. Just had a biannual service done to my AC, amazing work by Kirk, on time, professional, and efficient!!!Posted on Google BradTrustindex verifies that the original source of the review is Google. Our A/C system wasn’t cooling. Kirk was over to fix it in less than 2 hrs. Very friendly & efficient. Found 2 small leaks. Got system cooling. Went over all options & charges before proceeding. Very satisfied.Posted on Google kim reeseTrustindex verifies that the original source of the review is Google. Amazing professional service! I had smoke detectors falsely alarming and when I called in the morning, Scott immediately had a tech rerouted to address the alarms. Germaine arrived with 15 minutes of my call. He was AWESOME! Knowledgeable, polite and so personable. 5 star🌟 . And that is what we have found with all Mabry Brothers service techs!!!!Posted on Google Tom WartonTrustindex verifies that the original source of the review is Google. I love using these guys when I need an electrician. Their prices are fair, service is always fast and on time, and they communicate really well. Today Germayne T came out to install an EV charger at our home. He was on time, worked hard trenching ~80’, and got creative to help minimize the amount of exposed PVC. His connections look great, and the charger is working perfectly. As I said, I really like working with Mabry, and I think you will too.Posted on Google ariana xoTrustindex verifies that the original source of the review is Google. My AC randomly went out in the late afternoon and I thought it had to do with the battery on the thermostat or the filter needing to be changed but it ended up being 84 degrees in my house in the middle of the night and Kirk was able to get to me within an hour of me calling to fix my issue which happened to be the capacitor. He spotted the issue within 10 minutes, thank you so much!!!Posted on Google Donna ProctorTrustindex verifies that the original source of the review is Google. Company was very responsive. Germayne was knowledgeable, efficient, and cleaned up after work. Very professional! I highly recommend Mabry Brothers for your electrical needs.Posted on Google Maryjane BoisvertTrustindex verifies that the original source of the review is Google. I was very pleased with the service call. Kirk arrived on time, was professional and knowledgeable about the problems we were having with our air conditioner. He explained in detail what was happening and the steps needed to correct them. I highly recommend Mabry Brothers.Posted on Google Edwin BickelTrustindex verifies that the original source of the review is Google. We needed an outdoor low voltage circuit installed! Emailed Scott for a quote with quick turnaround and Martin showed up and did excellent install work! Can highly recommend Mabry Brothers from this first experience and will use again!Posted on Google barbara limaTrustindex verifies that the original source of the review is Google. Troy from Mabry Brothers is extremely professional and truly knows 100% what he’s doing. He is very responsible and takes the time to explain every step of the process, including every part that needs to be replaced. After calling several different companies, nobody was able to repair my generator and I only ended up wasting money. Troy was the only one who actually solved the problem quickly, and now my generator is working perfectly just in time for the upcoming storms. I highly recommend Troy and Mabry Brothers to anyone looking for honest, knowledgeable, and reliable service.
Fort Myers has the largest concentration of homes predating current alarm requirements. In the older neighborhoods we routinely find a single hallway alarm serving an entire house, with no devices inside bedrooms and no interconnection at all. Bringing those homes to current coverage is one of the highest value safety upgrades available here, and in most cases it can be done without significant disruption.
Estero homes were generally built with hardwired interconnected alarms already in place, which means the issue here is age rather than coverage. Homes built in the late 1990s and early 2000s are now on their second or third set of devices, and many owners have replaced units individually as they failed rather than as a system. We are frequently called to replace a full set that should have been changed several years ago.
Bonita Springs reflects its split housing stock. Older homes near Old 41 typically need devices added and interconnection established. Newer eastern communities need aged units replaced. Bonita also has a meaningful number of seasonal residences, where a chirping low battery alarm can run unheard for weeks, which is a strong argument for hardwired units with battery backup.
Naples homes are large enough that interconnection matters more here than anywhere else we work. In a house where bedrooms sit far from the kitchen, garage, and mechanical spaces, a standalone alarm at the point of origin may not be audible where people are sleeping. Multi level and guest house configurations require careful layout so that coverage extends across every occupied structure on the property.
Sanibel alarm work is heavily tied to post storm rebuilding. Homes that were repaired or reconstructed after Hurricane Ian generally received current alarm systems as part of that work, while homes that were not affected may still have devices well past their service life. Elevated island homes also require attention to how alarms are distributed across levels, since the ground level, living level, and any upper level each need coverage.
Captiva has the highest share of seasonal and rental occupancy in our service area, which makes alarm maintenance easy to defer and important not to. Devices in homes that sit empty for months are frequently found chirping or disabled on the owner’s return. We recommend hardwired interconnected units with battery backup for island properties, and a full evaluation as part of pre season preparation.
If your alarms are past ten years old, are not interconnected, or do not cover every bedroom, we can bring your home up to current standards quickly. Fill out the form below and a member of our team will reach out. For immediate assistance, please call our office directly at (239) 482-1122.