Company lists · Data refreshed September 2026

Top 25 Commercial security system installers based in the United States

RevenueBase identified 4,347 commercial security system installers headquartered in the United States as of September 2026 and tracks 62,565 professional contacts across them, including 18,986 with verified work emails. Houston is the largest hub.

This list covers commercial security system installers headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review
4,347Companies
62,565Contacts tracked
18,986Verified emails
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The 25 largest commercial security system installers based in the United States

Ranked by team size
Top 25 of 4,347 commercial security system installers based in the United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to commercial security system installers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceHoffman Estates, IL, United StatesHQ checked Sep 27, 202610001+5,707 contacts →

Partial evidence

“Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.”

Source: RevenueBase Database · checked Sep 27, 2026
2Partial evidenceAlpharetta, GA, United StatesHQ checked Sep 27, 2026n/a2,678 contacts →

Partial evidence

“Since 1987, Automated Systems Design, Inc.(ASD®) a five-time Inc.”

Source: RevenueBase Database · checked Sep 27, 2026
3Strong evidenceIrving, TX, United StatesHQ checked Sep 27, 20261,001-5,0002,045 contacts →

Strong evidence

“Everon is a leading national provider of commercial security, video, fire, sprinkler, and life safety solutions for complex, multi-site businesses and organizations.”

Source: RevenueBase Database · checked Sep 27, 2026
4Partial evidenceRomeoville, IL, United StatesHQ checked Sep 27, 20261,001-5,0001,406 contacts →

Partial evidence

“As of May 2016, Protection 1 and ADT merged together to become the leading company in the electronic security industry.”

Source: RevenueBase Database · checked Sep 27, 2026
5Partial evidenceWarrendale, PA, United StatesHQ checked Sep 27, 20261,001-5,0001,287 contacts →

Partial evidence

“Vector Security® has protected people and property by providing intelligent security solutions tailored to the needs of the customer for more than 50 years.”

Source: RevenueBase Database · checked Sep 27, 2026
6Partial evidenceChicago, IL, United StatesHQ checked Sep 27, 20261,001-5,0001,138 contacts →

Partial evidence

“At Titan Security Group, we understand that each client is unique, with specific security needs shaped by the type of property and its location.”

Source: RevenueBase Database · checked Sep 27, 2026
7Strong evidenceWest Palm Beach, FL, United StatesHQ checked Sep 27, 2026501-1,000849 contacts →

Strong evidence

“Security 101® is a nationwide leader in designing, installing, and maintaining advanced security systems tailored to the unique needs of organizations of all sizes.”

Source: RevenueBase Database · checked Sep 27, 2026
8Partial evidenceUniontown, OH, United StatesHQ checked Sep 27, 202610001+839 contacts →

Partial evidence

“Securitas knows Security.”

Source: RevenueBase Database · checked Sep 27, 2026
9Partial evidenceBoca Raton, FL, United StatesHQ checked Sep 27, 2026n/a799 contacts →

Partial evidence

“ADT Commercial, LLC was acquired by GTCR and is now Everon, LLC.”

Source: RevenueBase Database · checked Sep 27, 2026
10Partial evidenceTulsa, TX, United StatesHQ checked Sep 27, 2026501-1,000572 contacts →

Partial evidence

“Alert 360 security is a trusted and best-in-class provider of reliable security solutions for homes and businesses.”

Source: RevenueBase Database · checked Sep 27, 2026
11Strong evidenceOklahoma City, OK, United StatesHQ checked Sep 27, 2026501-1,000564 contacts →

Strong evidence

“Ford AV designs, installs, and services professional and commercial sound, audio-video, network infrastructure, and security surveillance systems for organizations including…”

Source: RevenueBase Database · checked Sep 27, 2026
12Partial evidenceBluffton, IN, United StatesHQ checked Sep 27, 2026n/a545 contacts →

Partial evidence

“At Indiana Technical Installations we provide IT Services/Networking, Home & Business Security/Surveillance Services, Custom Audio/Video and more.”

Source: RevenueBase Database · checked Sep 27, 2026
13Partial evidenceAmityville, NY, United StatesHQ checked Sep 27, 2026501-1,000427 contacts →

Partial evidence

“NAPCO Security Technologies (NASDAQ: NSSC) is one of the world's leading manufacturers of technologically advanced electronic security equipment including intrusion and fire alarm…”

Source: RevenueBase Database · checked Sep 27, 2026
14Indirect evidenceSt. Louis, MO, United StatesHQ checked Sep 27, 2026201-500406 contacts →

Indirect evidence

“Since we opened our doors in 1963, relationships have been are our strength by putting people before products.”

Source: RevenueBase Database · checked Sep 27, 2026
15Partial evidenceSouthfield, MI, United StatesHQ checked Sep 27, 2026501-1,000389 contacts →

Partial evidence

“Guardian Alarm is one of the largest independently-owned security companies protecting both homes and businesses throughout the Midwest.”

Source: RevenueBase Database · checked Sep 27, 2026
16Partial evidenceNashville, TN, United StatesHQ checked Sep 27, 2026201-500324 contacts →

Partial evidence

“Headquartered in Nashville, TN, with branches throughout the Southeastern United States, ADS Security, a Vector Security company, is the 20th largest electronic security company…”

Source: RevenueBase Database · checked Sep 27, 2026
17Indirect evidenceSyosset, NY, United StatesHQ checked Sep 27, 2026201-500302 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 27, 2026
18Strong evidenceFremont, CA, United StatesHQ checked Sep 27, 2026201-500263 contacts →

Strong evidence

“Northland Controls designs, installs, manages and harmonizes physical security systems across the globe with unparalleled services.”

Source: RevenueBase Database · checked Sep 27, 2026
19Partial evidenceMontgomery, AL, United StatesHQ checked Sep 27, 20261,001-5,000256 contacts →

Partial evidence

“CBE - An OWL Services Affiliated Company - is a leading supplier and service provider of in-store technology, such as point-of-sale systems, video surveillance, alarms, audio…”

Source: RevenueBase Database · checked Sep 27, 2026
20Strong evidenceAndover, MA, United StatesHQ checked Sep 27, 2026501-1,000254 contacts →

Strong evidence

“Minuteman Security & Life Safety is a leading provider of enterprise security system technology solutions.”

Source: RevenueBase Database · checked Sep 27, 2026
21Strong evidenceSparks, MD, United StatesHQ checked Sep 27, 2026201-500244 contacts →

Strong evidence

“For over 50 years, Wittenbach has been a trusted leader in advanced security solutions in financial and commercial industries.”

Source: RevenueBase Database · checked Sep 27, 2026
22Strong evidenceOrange, CA, United StatesHQ checked Sep 27, 202651-200232 contacts →

Strong evidence

“One of the largest privately held national electronic security system integrator in the USA, NAVCO keeps you one step ahead of ever-changing technology.”

Source: RevenueBase Database · checked Sep 27, 2026
23Partial evidenceAurora, IL, United StatesHQ checked Sep 27, 2026201-500225 contacts →

Partial evidence

“Family owned and operated since 1968, Alarm Detection Systems, Inc.(ADS) understands that nothing is more important than the safety of your family and the protection of your…”

Source: RevenueBase Database · checked Sep 27, 2026
24Strong evidenceSeattle, WA, United StatesHQ checked Sep 27, 202651-200220 contacts →

Strong evidence

“Guardian Security Systems is the leader in residential and commercial life safety solutions.”

Source: RevenueBase Database · checked Sep 27, 2026
25Partial evidenceNew York, NY, United StatesHQ checked Sep 27, 2026201-500206 contacts →

Partial evidence

“Since 1969, thousands of businesses across the country have entrusted their protection to DGA Security.”

Source: RevenueBase Database · checked Sep 27, 2026

Showing 25 of 4,347 commercial security system installers based in the United States

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Commercial security system installers based in the United States at a glance

As of Sep 27, 2026
30.3%Verified-email coverage
14.4Average contacts per company
11-50Median size (employees)
1.8%Largest-city concentration · Houston
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
2,143
11-50
1,692
51-200
392
201-500
56
501-1,000
26
1,001-5,000
19
5,001-10,000
2
10001+
4

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 4,347 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among commercial security system installers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “commercial security system installers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names commercial security system installers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among commercial security system installers, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 18,986 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 27, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names commercial security system installers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many commercial security system installers are there based in the United States?

RevenueBase identified 4,347 commercial security system installers headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Convergint, headquartered in Hoffman Estates, tops this list with the largest team on record.

Which city has the most commercial security system installers?

Houston leads with 80 headquartered companies, followed by New York (77) and Miami (50).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 18,986 verified decision-maker contacts tracked across these 4,347 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.