Company lists · Data refreshed September 2026

Top 25 System integrator automation companies based in Houston, United States

Name: System integrator automation companies based in Houston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 109 companies tracked

RevenueBase identified 109 system integrator automation companies headquartered in Houston, United States as of September 2026 and tracks 3,858 professional contacts across them, including 1,073 with verified work emails. Houston is the largest hub.

This list covers system integrator automation companies headquartered in Houston, 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 21, 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 21, 2026 86% judged on-target in blind review

109Companies

3,858Contacts tracked

1,073Verified emails

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The 25 largest system integrator automation companies based in Houston, United States

Ranked by team size

Top 25 of 109 system integrator automation companies based in Houston, United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to system integrator automation companies: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Englobal	Partial evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	201-500	1,183 contacts →
	Partial evidence “Who We Are Englobal Founded in 1985, ENGlobal (NASDAQ: ENG) is a specialty engineering services firm that focuses on automation solutions and select EPCM projects for the energy…” Source: RevenueBase Database · checked Sep 21, 2026
2	Intech Automation & Intelligence	Partial evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	501-1,000	879 contacts →
	Partial evidence “INTECH Automation & Intelligence is a globally renowned industrial automation & digitalization technology company.” Source: RevenueBase Database · checked Sep 21, 2026
3	MCA Communications, INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	501-1,000	207 contacts →
	Partial evidence “MCA Communications is a Design-Build Technology Integrator specializing in network cabling infrastructure, audio visual installations, wireless solutions, and security solutions…” Source: RevenueBase Database · checked Sep 21, 2026
4	Versatech Automation Services, LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	201-500	142 contacts →
	Partial evidence “VersaTech Automation Services is a 50 year old company with 500+ people and $90M+ in annual sales.” Source: RevenueBase Database · checked Sep 21, 2026
5	Dac, INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	51-200	112 contacts →
	Indirect evidence “Since 1993, DAC has been committed to delivering exceptional customer experience, effective project execution, and value-oriented services.” Source: RevenueBase Database · checked Sep 21, 2026
6	Integration Objects	Strong evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	51-200	106 contacts →
	Strong evidence “Integration objects is a world-leading systems integrator and solutions provider specialized in operations and manufacturing intelligence, advanced analytics, preventive detection…” Source: RevenueBase Database · checked Sep 21, 2026
7	Unify Energy Solutions	Strong evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	51-200	101 contacts →
	Strong evidence “Unify Energy Solutions is a Building Automation Systems provider in Houston, Beaumont; Central, and South Texas; as well as Colorado and Wyoming.” Source: RevenueBase Database · checked Sep 21, 2026
8	Soap Engineering, LLC	Strong evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	11-50	87 contacts →
	Strong evidence “We have earned a reputation as a global leader in Design/Build & Systems Integration for more than 30 years.” Source: RevenueBase Database · checked Sep 21, 2026
9	Antares Tech	Partial evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	11-50	61 contacts →
	Partial evidence “ANTARES TECH SERVICES is a company focused on the automation and information technology services market, with strong experience in steel firms, providing consulting services…” Source: RevenueBase Database · checked Sep 21, 2026
10	ARC Specialties	Partial evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	11-50	54 contacts →
	Partial evidence “ARC Specialties designs and builds automated manufacturing systems and custom equipment for joining, cladding, and other applications.” Source: RevenueBase Database · checked Sep 21, 2026
11	Erdos Miller	Indirect evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	11-50	47 contacts →
	Indirect evidence “Our clients believe they can change the market with their idea, and they need a technology partner to come alongside them and challenge, vet, and better that idea.” Source: RevenueBase Database · checked Sep 21, 2026
12	Convergentz	Strong evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	11-50	42 contacts →
	Strong evidence “As a technology leader and master systems integrator, Convergentz integrates IT and traditional building system functions to improve Building Performance, Environmental Comfort…” Source: RevenueBase Database · checked Sep 21, 2026
13	Parijat Controlware INC	Strong evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	11-50	40 contacts →
	Strong evidence “Parijat Controlware Inc.(Parijat or PCI) is a controls systems integrator since 1989, has been a strong player in the controls, automation industry.” Source: RevenueBase Database · checked Sep 21, 2026
14	Calatlantic	Indirect evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	11-50	30 contacts →
	Indirect evidence “CalAtlantic is a leader in the security industry.” Source: RevenueBase Database · checked Sep 21, 2026
15	ICP DAS Usa, INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	1-10	28 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
16	Security Control Systems, INC	Strong evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	11-50	18 contacts →
	Strong evidence “Security Control Systems (SCS), a Unified Security and Technology Company, is a major supplier of integrated electronic security and control systems for commercial and industrial…” Source: RevenueBase Database · checked Sep 21, 2026
17	Timbergrove	Indirect evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	11-50	16 contacts →
	Indirect evidence “You need to boost productivity, streamline industrial processes, improve safety, and reduce costs.” Source: RevenueBase Database · checked Sep 21, 2026
18	Ascend Automation & Controls	Partial evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	51-200	14 contacts →
	Partial evidence “Ascend provides the experienced, seasoned Automation and Controls specialists to execute the full range of required products and services to ensure effective and efficient…” Source: RevenueBase Database · checked Sep 21, 2026
19	Teknoir	Indirect evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	11-50	12 contacts →
	Indirect evidence “We are Teknoir: Our mission is to make the industries supplying the world’s most essential goods and utilities more reliable, safer, and environmentally sound.” Source: RevenueBase Database · checked Sep 21, 2026
20	Donsol Valve Supply Automation. Simplified	Partial evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	1-10	11 contacts →
	Partial evidence “Valve Supply + Automation.” Source: RevenueBase Database · checked Sep 21, 2026
21	Media Systems INC	Strong evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	11-50	11 contacts →
	Strong evidence “Media Systems is a custom home integrator bringing together audio, video, lighting, climate, communication, video surveillance and energy management.” Source: RevenueBase Database · checked Sep 21, 2026
22	Solid State Automation And Controls	Strong evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	11-50	10 contacts →
	Strong evidence “About SSAC Solid State Automation and Controls LLC (SSAC) is an electrical engineering company that provides comprehensive solutions for your automation and control system needs.” Source: RevenueBase Database · checked Sep 21, 2026
23	Asgtek	Indirect evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	11-50	10 contacts →
	Indirect evidence “At ASG Tek, we don't just implement software; we build the operational backbone that allows industrial leaders to scale without chaos.” Source: RevenueBase Database · checked Sep 21, 2026
24	Custom Audio Video	Indirect evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	11-50	10 contacts →
	Indirect evidence “Technology you can’t live without.” Source: RevenueBase Database · checked Sep 21, 2026
25	Unlimited Integration	Partial evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	51-200	8 contacts →
	Partial evidence “Unlimited Integration is a company based out of 5810 Cypress St, Houston, Texas, United States.” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: system integrator automation companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names system integrator automation companies.
Partial evidence: Its own public description names part of system integrator automation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name system integrator automation companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 109 system integrator automation companies based in Houston, United States

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System integrator automation companies based in Houston, United States at a glance

As of Sep 21, 2026

27.8%Verified-email coverage

35.4Average contacts per company

11-50Median size (employees)

100.0%Largest-city concentration · Houston

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 109 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 system integrator automation companies, 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 Houston, United States whose own description of what they do matches “system integrator automation companies”. 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 system integrator automation companies), 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 system integrator automation companies, and records with no verified work email. Companies headquartered outside Houston 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, 1,073 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 21, 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.

System integrator automation companies by metro in the United States

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 system integrator automation companies, 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 system integrator automation companies are there based in Houston, United States?

RevenueBase identified 109 system integrator automation companies headquartered in Houston, 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?

Englobal, headquartered in Houston, tops this list with the largest team on record.

Which city has the most system integrator automation companies?

Houston leads with 109 headquartered companies, followed by Austin (53) and Los Angeles (53).

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 1,073 verified decision-maker contacts tracked across these 109 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 21, 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.