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Top-Rated Alarm or security system repairers in Algonquin - Updated Nov 2026

Avatar for SafeStreets - ADT Authorized Provider
SafeStreets - ADT Authorized Provider
4.8(
320
)
Alarm or Security System - Repair

Serving Algonquin, IL and surrounding areas

Approved (Corporate)

In business since 2010

Free estimates

Emergency services offered

"SafeStreets’ alarm system is fantastic. The motion sensors, door/window contacts, and cameras work flawlessly. The home automation features are a huge plus—I can control everything from my phone. Highly recommend SafeStreets to anyone looking for reliable security."
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+1

4 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for ADT
ADT
4.5(
891
)
Alarm or Security System - Repair

Serving Algonquin, IL and surrounding areas

Approved (Corporate)

In business since 1874

Free estimates

Emergency services offered

ADT home security systems are backed by more than 145 years of experience. As the leader in home security, ADT can help you customize a home security system with easy-to-use equipment and special security features to meet your safety needs. \n \nWe have service centers nationwide that can install an ADT home security system within 24 hours in most areas. Once your home is equipped with our top-of-the-line system, it is connected to a network of ADT Monitoring Centers nationwide which deliver non-stop security monitoring 365 days a year. \n \nAll of our installation technicians are internal employees, and not third-party contractors. You can count on your Security Advisor to take the time to set up your system properly, help you understand how the system works, and help make sure your home and family are thoroughly protected.

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+44

Recommended by88%of homeowners
Avatar for Alert Protective Services LLC
Alert Protective Services LLC
4.8(
194
)
Alarm or Security System - Repair

Serving Algonquin, IL and surrounding areas

In business since 1983

Free estimates

Emergency services offered

"Alert was terrific.  We bought a home, and I asked Tony to come out and do an evaluation of the existing security system and make recommendations on any upgrades/updates.  It turned out that Alert had installed the original system.  He came promptly at my request, did a thorough inspection, and provided a detailed estimate.  He also provided an alternative new system quote, but explained that we really didn't need a new system because the existing one was fairly new and a reliable "workhorse."  We scheduled the visit for the tech to come out.  Duke, the technician, was great.  He worked diligently and -- despite an initial hiccup -- got it all set up.  We have had a few mistaken "false alarms" and the monitoring service has called us immediately on our phones to check in.  This was exactly what we were looking for, and we got it.
"
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Recommended by98%of homeowners
Avatar for Security One
Security One
4.1(
456
)
Alarm or Security System - Repair

Serving Algonquin, IL and surrounding areas

In business since 2007

Credit card accepted

"I switched from another company to Security One, they use the same equipment. They had to come out and recode everything. I simply switched because of the financial benefit. I have only had them for a few months, and I haven't had any problems with them. They save me some money every month.  When my alarm went off, they did call me."
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+16

Recommended by84%of homeowners
Avatar for Frontpoint
Frontpoint
4.7(
8,819
)
Alarm or Security System - Repair

Serving Algonquin, IL and surrounding areas

In business since 2007

Free estimates

Emergency services offered

"Frontpoint great in selling me my new security monitoring system and they gave me a great discount. I needed to install this system myself and they were also very helpful in helping me when I was making mistakes during installation (guess what? it seems that the numbering of the sensors does matter!). But it is the billing where they are falling short. First of all, you need to keep a credit card on file with them - let's hope that they do a good job at protecting my information. Second, when I added my bank account info so that they could just debit my checking account for my monthly service charge ($44.99), they completely botched that up. They called me to tell me that my credit union denied the payment but when I called my credit union, they told me that no attempt to debit my account had been made. Ultimately Frontpoint charged my credit card for the April payment (which is actually unacceptable to me). My credit union advised that I was better off using their web bill pay system but it seems that I am unable to do that. My only choice with Frontpoint is to give them my credit card and bank account info so that they can charge my account each month - there is no way for me to send the money myself. Last thing - I was not actually able to talk to someone from Billing - only was able to talk to a "customer service rep" who could not explain what really happened. Let's hope that the May payment goes better..."
Recommended by93%of homeowners
Avatar for ADT/Safe Streets USA
ADT/Safe Streets USA
4.9(
13
)
Alarm or Security System - Repair

Serving Algonquin, IL and surrounding areas

In business since 1990

Free estimates

Emergency services offered

Home Security Systems / Home Automation Devices / SafeStreetsUSA is one of ADT’s oldest, largest and most respected Authorized Dealers. We only sell and install ADT-monitored security systems. We connect you to ADT, the largest security provider, with 6 Monitoring Centers located nationwide. We staff the most experienced, caring, well-trained employees for our installation, customer support and sales teams who are committed to providing you with a security solution. We are a leader in innovative security technology including voice recognition, home automation, real-time video, and much more.

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+3

Recommended by100%of homeowners
Avatar for CSI Secure Solutions
CSI Secure Solutions
4.4(
114
)
Alarm or Security System - Repair

Serving Algonquin, IL and surrounding areas

In business since 2001

Free estimates

Emergency services offered

"I contacted CSI and spoke to Rob.  We discussed the situation that was driving my request for information on these individuals and he suggested what he thought I needed and quoted me a very fair price.  He also gave me some advice and recommendations on other things i could look into which was very helpful.  I sent him the info he requested (names, approx ages and/or birthdates) and he said he would have something back to me within 24 hours.  That same evening, he emailed me letting me know my initial 3 reports were ready.  The info was comprehensive and everything I was looking for.  There was a question on one of the individuals and before Rob just pulled a report and charged me for the wrong person, he called so we could discuss a little to make sure he had identified the correct person.  I received my final reports quickly and the info was great.  I highly recommend CSI, I think Rob was great to deal with and will not hesitate to use them again in the future if needed!
"
Background Checks
Employee Check
Background Report
Surveillance
Infidelity Monitoring

+12

Recommended by85%of homeowners
Avatar for Imperial Surveillance, Inc.
Imperial Surveillance, Inc.
4.3(
24
)
Alarm or Security System - Repair

Serving Algonquin, IL and surrounding areas

In business since 2007

Free estimates

Emergency services offered

Imperial Surveillance, Inc. was formed in 2007 to address a very specific need: to provide the Chicagoland Area with high-quality, customer-focused security solutions. \n\nOur staff possess extensive experience installing, servicing and, networking security products such as card access systems, video surveillance, burglar alarm systems, and fire alarm systems in a diverse range of residential, public, and private sector environments. \n \nImperial Surveillance also services various size government facilities and corporations throughout Illinois. We provide common sense solutions that allow our clients to focus on their business or residence rather than security related problems.

Imperial Office
Imperial Installations
Recommended by94%of homeowners
Avatar for AIO Integrations LLC
AIO Integrations LLC
4.6(
18
)
Alarm or Security System - Repair

Serving Algonquin, IL and surrounding areas

In business since 2020

Emergency services offered

Credit card accepted

AIO provides computer support services for all PC platforms including Apple OSX/iOS, Microsoft Windows, and Google Android devices. \n\nWe are the only company on Angi.com with a BBB A+ rating providing nation-wide IT support on-site/remote services from over 1500 locations. You can call us directly at 832-402-1335, option 1 for sales, to be connected to a sales engineer if you need immediate help. You can also visit our website at https://aiosupport.net. We look forward to helping you!

Helping a Victim who was being Cyber-stocked
WIndows Update Broken
Computer Tune-up
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Recommended by91%of homeowners
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