Alarm Companies in San Antonio: The Most Recommended, Measured on leading AI assistants
Measured July 2026 · Updated quarterly
This San Antonio edition started from 59 verified local alarm companies. We then asked leading AI assistants — 4 different ways, 8 checks in July 2026 — and wrote down every company it recommended.
Alert 360 Home & Business Security San Antonio came out on top, recommended in 6 of the 8 checks. In all, 25 companies made the board — the other 34 never appeared in any answer.
True Protection and Smith Thompson Home Security and Alarm Dallas were the next most frequent answers. 22 more companies round out the board below.
For scale: of the 34 metros in this edition, San Antonio's cohort of 59 alarm companies was the 24th largest.
Only 25 of 59
San Antonio-area alarm companies we benchmarked ever get recommended by AI — 8 checks, 4 phrasings, run July 2026.
Which alarm companies AI names in San Antonio
The San Antonio board runs 25 deep. Read it left to right: rank, company, where it operates from, how many of the 8 checks named it, and its Google review count for context.
| # | Alarm company | Based in | Times recommended | Google reviews |
|---|---|---|---|---|
| 1 | Alert 360 Home & Business Security San Antonio | San Antonio, TX | 6 of 8 | 703 |
| 2 | True Protection | Austin, TX | 5 of 8 | 196 |
| 3 | Smith Thompson Home Security and Alarm Dallas | Plano, TX | 4 of 8 | 5,848 |
| 4 | Alamo Smart Home | San Antonio, TX | 4 of 8 | 1,331 |
| 5 | Allied Home Security & Alarm Monitoring Houston | Houston, TX | 4 of 8 | 629 |
| 6 | LAW Security | San Antonio, TX | 4 of 8 | 325 |
| 7 | TSS Fire Alarm and Security Services | San Antonio, TX | 4 of 8 | 21 |
| 8 | All Star Security of Lago Vista | Lago Vista, TX | 4 of 8 | 18 |
| 9 | Builder Systems Group (BSG) Home Security | San Antonio area | 3 of 8 | — |
| 10 | Vivint | San Antonio, TX | 2 of 8 | 1,358 |
| 11 | ADT Security Services | San Antonio, TX | 2 of 8 | 319 |
| 12 | 316 Security & Home Automation | San Antonio, TX | 2 of 8 | 94 |
| 13 | Aegis Surveillance & Security, LLC | San Antonio area | 2 of 8 | — |
| 14 | dL3 Services | San Antonio area | 2 of 8 | — |
| 15 | Legion Security LLC | San Antonio area | 2 of 8 | — |
| 16 | Chorus Security | San Antonio, TX | 1 of 8 | 1,682 |
| 17 | APEX Smart Home | San Antonio, TX | 1 of 8 | 464 |
| 18 | Revamped Security - ADT Authorized Dealer | San Antonio, TX | 1 of 8 | 134 |
| 19 | San Antonio Alarm Company Inc. | San Antonio, TX | 1 of 8 | 13 |
| 20 | Access Key & Security | San Antonio area | 1 of 8 | — |
| 21 | Dominion Design and Integration | San Antonio area | 1 of 8 | — |
| 22 | Gleitz Alarms, Inc. | San Antonio area | 1 of 8 | — |
| 23 | Secure24 Alarm Systems (ADT) | San Antonio area | 1 of 8 | — |
| 24 | Sloan Security Systems LLC | San Antonio area | 1 of 8 | — |
| 25 | Texas Surveillance & Networking | San Antonio area | 1 of 8 | — |
AI pointed San Antonio business owners to Alert 360 Home & Business Security San Antonio in 6 of the 8 checks. Google shows 703 reviews for it.
Named in 5 of the 8 checks, True Protection (Austin) holds the 2nd spot on the San Antonio board. It has 196 Google reviews behind it.
Smith Thompson Home Security and Alarm Dallas earned rank 3 by showing up in 4 of the 8 checks, serving the metro from Plano. Google shows 5,848 reviews for it.
At #4: Alamo Smart Home, which came up in 4 of the 8 checks. It has 1,331 Google reviews behind it.
Allied Home Security & Alarm Monitoring Houston surfaced in 4 of the 8 checks when we asked; it operates from Houston. Google shows 629 reviews for it.
Spot 6 belongs to LAW Security — named in 4 of the 8 checks. It has 325 Google reviews behind it.
TSS Fire Alarm and Security Services was recommended in 4 of the 8 checks. Google shows 21 reviews for it.
AI pointed San Antonio business owners to All Star Security of Lago Vista in 4 of the 8 checks — the company is based in Lago Vista. It has 18 Google reviews behind it.
Named in 3 of the 8 checks, Builder Systems Group (BSG) Home Security holds the 9th spot on the San Antonio board.
Vivint earned rank 10 by showing up in 2 of the 8 checks. It has 1,358 Google reviews behind it.
At #11: ADT Security Services, which came up in 2 of the 8 checks. Google shows 319 reviews for it.
316 Security & Home Automation surfaced in 2 of the 8 checks when we asked. It has 94 Google reviews behind it.
Spot 13 belongs to Aegis Surveillance & Security, LLC — named in 2 of the 8 checks.
dL3 Services was recommended in 2 of the 8 checks.
AI pointed San Antonio business owners to Legion Security LLC in 2 of the 8 checks.
Named in one of the 8 checks, Chorus Security holds the 16th spot on the San Antonio board. It has 1,682 Google reviews behind it.
APEX Smart Home earned rank 17 by showing up in one of the 8 checks. Google shows 464 reviews for it.
At #18: Revamped Security - ADT Authorized Dealer, which came up in one of the 8 checks. It has 134 Google reviews behind it.
San Antonio Alarm Company Inc. surfaced in one of the 8 checks when we asked. Google shows 13 reviews for it.
Spot 20 belongs to Access Key & Security — named in one of the 8 checks.
Dominion Design and Integration was recommended in one of the 8 checks.
AI pointed San Antonio business owners to Gleitz Alarms, Inc. in one of the 8 checks.
Named in one of the 8 checks, Secure24 Alarm Systems (ADT) holds the 23rd spot on the San Antonio board.
Sloan Security Systems LLC earned rank 24 by showing up in one of the 8 checks.
At #25: Texas Surveillance & Networking, which came up in one of the 8 checks.
Measured July 2026 · 8 business owner-style questions · This list is measured, never sold — no company can pay to appear here. The companies named more often by AI rank higher.
How AI was asked about alarm companies in San Antonio
Here are the prompts behind the numbers, verbatim. The count beside each one is how many companies AI named in that answer.
| What we asked leading AI assistants | Companies named | In our San Antonio cohort |
|---|---|---|
| “Who is the best alarm company in San Antonio, Texas?” | 16 | 14 |
| “I need an alarm system installed and monitored in San Antonio, Texas. Who should I hire?” | 16 | 13 |
| “What is the most recommended alarm company in San Antonio, Texas?” | 13 | 10 |
| “What are the top rated alarm companies near San Antonio, Texas?” | 14 | 11 |
The gap between the two right-hand columns is companies AI named that are not verified San Antonio-area alarm companies — national brands, directories, out-of-market firms, and names we could not pin to exactly one business. Those are reported here but never ranked.
San Antonio alarm companies, by the numbers
These are derived directly from the 8 San Antonio checks and the verified cohort behind them. Nothing here is modelled, projected, or borrowed from a different market.
- 15 of the 25 ranked companies were named in more than one check; the rest surfaced once.
- The ranked companies hold 13,135 Google reviews between them.
- The board reaches past San Antonio proper — ranked companies also operate out of Austin, Plano and Houston.
- San Antonio's 42% named rate runs above this edition's overall average of 39%.
How San Antonio compares with the rest of the benchmark
One city's hit rate means little in isolation. Set against the 34 metros measured this edition, the San Antonio figures look like this:
| Alarm companies benchmarked in San Antonio | 59 of 2,128 nationwide |
|---|---|
| Named by AI in San Antonio | 25 (42%) |
| Named across the whole edition | 820 (39%) |
| AI checks run in San Antonio | 8 (4 phrasings) |
| Cohort size rank | #24 of 34 metros |
The San Antonio alarm companies AI never named
Out of 59 verified San Antonio alarm companies, 34 never surfaced — no phrasing of the question produced their name.
We measured that they were absent — we did not measure why, and this page makes no claim about the quality of anyone's work. A company can run clean installs for twenty years and still never be named. What it means is narrower and more useful: the San Antonio customers who ask leading AI assistants first are being sent somewhere else.
Read it as a distribution problem rather than a reputation one. 34 San Antonio companies are invisible at the exact moment a customer is deciding who to call, and the next quarterly run re-measures all of them from scratch.
What "most recommended" means on this page
The ranking is mechanical. Each mention in an answer is one point, the points are added up, and the order follows. Nothing about a San Antonio company's size, age, or spending enters the calculation.
Measured, never sold — money cannot buy a spot. We take no payment for placement, accept no submissions, and never reorder a list at a company's request.
We re-run the same questions quarterly with identical methodology, so a company that becomes visible to AI can appear in the next edition. Each run starts from zero — no position carries over.
Full methodology: how these rankings are measured.
What San Antonio alarm companies can do about this
Ranked here? Put the proof on your website — free.
Any company on this list can grab a free "Most Recommended" badge to embed on its site — it displays your measured rank and links back here so visitors can check it themselves.
Claim your free badgeNot seeing your company here?
Each name above is winning business owners that could be calling you. A free 60-second check shows how AI sees your company.
See if AI recommends youFree check by AI Security Edge, the team behind this benchmark. How it works
Other measured security lists for San Antonio
Plenty of San Antonio companies do alarm work alongside cameras, access control, or fire systems — and those are separate questions with separate answers. Each gets its own measured board, built from its own checks:
- Commercial security systems in San Antonio — plus the measured fire alarm, access control, and security camera lists for the metro.
- Every metro we benchmark — the national picture.
The San Antonio alarm board, explained
How many alarm companies in San Antonio show up in AI's answers?
Out of 59 verified San Antonio-area companies, AI named 25 — 42%. 34 never surfaced in any of the 8 checks.
What's the most recommended alarm company in San Antonio right now?
Alert 360 Home & Business Security San Antonio. It was named in 6 of the 8 checks in July 2026, ahead of True Protection. Rank order comes purely from how often AI names each company.
What exactly did you ask leading AI assistants about San Antonio alarm companies?
8 checks built this list, using phrasings like "What are the top rated alarm companies near San Antonio, Texas?". Every company AI named got counted; nothing else influenced the board.
Can alarm companies buy their way onto this list?
No — and that's the point. Rankings are measured, never sold; no payment, sponsorship, or relationship puts a company here. Money cannot buy a place on this list.
Why isn't my company on the San Antonio list?
Only that it wasn't named when we asked. 34 San Antonio-area companies are in the same position — AI visibility is still rare, and the next quarterly run re-measures everyone from scratch.
Is this list for home alarm systems or business alarm systems?
It covers alarm companies generally — burglar alarms and monitoring for homes and for commercial property. Fire alarm inspection and life-safety work is a separate specialty and gets its own board rather than being mixed in here.
Does this tell me which San Antonio alarm company is cheapest?
No — we never gather pricing, so we can't and won't rank on it. The list tells you which San Antonio companies AI puts forward; what they charge is a question for them.
How did you decide which San Antonio companies count as alarm companies?
It is a verified list of alarm companies operating in the San Antonio area, built before any question was asked. That order matters: the cohort is fixed first, then AI is asked, then the answers are matched back against it. A company AI names that isn't a San Antonio alarm company doesn't get counted, and a name that matches more than one business is dropped rather than guessed at.
Why don't the big national brands dominate this San Antonio list?
There's no local preference built in and no national exclusion either. The question is about San Antonio, and the answer is whatever AI says. Every name it returns gets matched against the verified cohort on the same terms.
Why build a San Antonio alarm list out of AI answers?
Because more people now ask an AI assistant for a recommendation before they search or call anyone. When AI answers "who should I call about an alarm system", it gives a handful of names — and in San Antonio that handful is short. This page is the record of who is in it.