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ADT Security Services
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The Best Security System Installation Company in Earth City
Compare top-rated security system installation providers in Earth City. Profiles include verified reviews, service details, and direct contact options.
Service providers
Security System Installation pros near Earth City
These companies are based in nearby cities and serve Earth City.
Open 8:00 AM – 5:00 PM
We are the go-to provider of business security, actionable insights, and purpose-built networks for the nation’s top multi-location brands. Our mi…
Open 24/7
Free estimates and consultations, Network room cleanup, Security Camera installation and sales, Home automation, Wi-Fi troubleshooting, Wireless s…
Open 8:00 AM – 5:00 PM
Paul T. Erker started in the alarm business in 1982 while in college. In 1994, Paul established Erker Security Systems, Inc. Since then, Erker Sec…
Open 8:00 AM – 5:00 PM
We've been in business for over 6 years now and take pride in our great customer service. We have remained the top local alarm company in St.…
Open 24/7
Our business was started by the late Ralph Bice whom was a retired Rockwoods police officer. The company today is ran by his son Harold Bice Presi…
Open 24/7
Lasbury Security and Fire provides comprehensive security, life safety, and technology solutions for both commercial and residential clients. We s…
Open 6:00 AM – 11:00 PM
Vivint brings peace of mind with reliable smart home security, effortless home management, and 24/7 support from real people. We keep you connecte…
From $50
Up to $500
Open 8:00 AM – 7:00 PM
In East Alton, we are Advanced Wiring Solutions – a team of dedicated professionals specializing in Security System Installation Services. We take…
Open 9:00 AM – 5:00 PM
When you leave on vacation or even just for a few nights, don't just hope that nothing happens in your absence. Ensure your home and property…
Open 24/7
Computer And Technology Services has been serving homes and businesses in Glen Carbon, IL, and the St. Louis area with fast, reliable, and profess…
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Verified Security System Installation in Earth City, MO
We show only active businesses that pass moderation. Results are specific to Earth City and nearby service areas, and inactive profiles are removed to keep the list current.
Real reviews for security system installation
Ratings and reviews come from customers who used the service. Compare security system installation pros in Earth City by experience, responsiveness, and value before you reach out.
Local-first search in Earth City
Filter by neighborhood, check locations on the map, and find providers close to home or work in Earth City. Listings are refreshed regularly — October 2026.
Local cities around Earth City, including St. Louis
The same listings in the closest cities — providers there often take jobs in Earth City too. Mileage is the approximate distance from Earth City.
- St. Louis 5.9 mi
- St. Peters 8.5 mi
- Clayton 11.0 mi
- Saint Louis 13.4 mi
- East Alton 20.3 mi
- Glen carbon 27.3 mi
Practical notes for Earth City
Looking for security system installation in Earth City? This page lists verified local providers with ratings, reviews, and contact options. We show active businesses only — profiles are moderated and updated by owners.
Compare pros by experience, price range, and customer feedback. Many providers offer free estimates or same-day service for common requests. Use filters and the map to find someone close to your address.
Before you hire
- Read the most recent reviews for your specific type of job.
- Ask about licensing and insurance when required for this trade.
- Get a written estimate for work over a few hundred dollars.
- Confirm availability and any trip or emergency fees upfront.
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Customer reviews in Earth City
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Thermisha D.I am pretty sure I received the worse customer service ever from Secure 24. I do not write reviews but the horrible way Secure 24 handles business is almost fraudulent. Once you have signed your contract and made it passed 3 days, they do not care about your services. I tried to cancel my service after realizing ADT would not work for me. Due to wifi, the camera continues to go on/offline and now have been completely down for 48 hours. I called the actual ADT Saturday to cancel and was told I have until Monday to make a final decision since both are not open on weekends so it does not count, only business days. Monday came and the first two people Josh and Richard said yes this is the last day. Richard pretended like he was going to work to get it cancelled and needed to call me back. Never received a call back, but when I called again, Will and Luis said Saturday was the last day and I should have left a message. Will was so rude and unprofessional, he did not care one way or another. You can truly tell the call center does not value good customer service or serving their customers. A manager, Dylan, finally called me back after reaching out to the sales rep and ADT. Still no help and continued with the lie about me having to Saturday to cancel regardless of what anyone else has told me. Their website even states M-F!! Do yourself a favor and do not go with Secure 24. I do not see how ADT still allow them to be an authorized partner. Once they bide you to a 3 year contract, they do not care. I am pretty sure if someone treated them like this, they would be highly offended. Again, I hope this review finds anyone who is researching and thinking about adding Secure 24. DON'T!!!! Good customer service goes a long way regardless of the real concern, and they DO NOT have it! Leadership needs to step up and make this a quality partnership and service across the board like I assume it once was.
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Kevin C.
Customer and Technical Service is poor and inconsistent. Unfortunately we moved into a home that already had ADT equipment. I looked at switching to another company, but the cost to switch was significant. It's hard to feel stuck with a company you would rather not do business with and seems content with poor customer reviews and ratings. If you are looking for security, I would not recommend ADT.
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Dan L.
Warning do not use ADT! There is zero customer service after equipment is installed! They also hard sell after they arrive to install equipment. I'm locked in a contract for two years or I would cancel them now! Buyer beware!
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Tomika T.
the worst company i've ever dealt with, i moved from one address to another, a sales rep come to my home to reinstall the equipment. i had the equipment for a couple of months he said the equipment was old, he couldn't use it he made me buy new equipment. he said i had to pay $1100 and i would only pay $52 a month. adt has been taking $21 out of my account for the last six months. i've called adt at least 50 times i had a sales rep on the phone with me. he was yelling at adt. he said hes worked over 30 years and has never seen a customer being treated the way that i've been treated. he advised me to get an attorney. this company has stressed me to the max. nobody seems to know what's going on. they made me purchase new equipment. they took the old equipment, he told me that i would have to install the equipment myself or pay $1100 they're still charging me a flex pay for the old address that i asked them to remove my debit card off of their website. both accounts are active i have constantly called. nobody knows who can help me, adt they don't communicate with each other you'll have one person say that i am correct and then the next person will say i'm not correct and there's nothing that they can do. i'm paying for service at two houses the rep that came into my house he has the wires all over the walls. he didn't put them behind the walls. the outlet outside is constantly coming out of the wall because it's just plugged in there. he didn't screw it down so the wind blows it out he has all of these cameras pointing in areas of the outside that i don't need but he said i had to buy them. i can't even see anything with the cameras at all. i called to see if they can send somebody out to adjust them and fix it for me, but they won't send anybody out. i've spoke with managers the resolve department. and i've gotten no help at all. i have a ulcer in my stomach and it's been flaring up every since i've dealt with adt. i need help!!!
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Weston B.
Had a salesman walk by and offer a free installation and camera and all you gotta do is start paying monthly didn't mention anything about contracts or anything the second day we had it it woke me and my family up at 11 at night with this sharp ear rape sound I asked to have it removed and cancel our membership (text messages of me telling them to cancel) I proceeded to call adt and ask to cancel to which they said if I have proof telling them to cancel before my 3 day was over then they will wave it. The thing just doesn't work and there's no way I'm paying 70 bucks for this month when it didn't work and they're saying I may have to pay a 1,800$ cancellation fee?
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Craig M.
I took off of work for a scheduled appointment with a technician and they did not show up. This is the third time this has happened in the last 6 months. Their customer service is horrendous and I continue to have a product that does not work. I cannot take a fourth vacation day to schedule an appointment for someone not to show up.
