Company lists · Data refreshed October 2026
Top 25 Instrumentation contractors based in the United States
RevenueBase identified 4,552 company matches for instrumentation contractors associated with the United States as of October 2026 and tracks 128,781 professional contacts across them, including 47,771 with verified work emails. Houston is the largest hub.
This list covers company matches for instrumentation contractors associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 27, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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.
The 25 largest instrumentation contractors based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,379 contacts → | ||||
Exact match “At MMR we believe that no matter how much you achieve, you should never forget where you came from.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase | |||||
| 2 | 3,020 contacts → | ||||
Exact match “ENTRUST Solutions Group, an ENR Top 100 company, provides comprehensive and dependable engineering, consulting, and automation services to pipeline companies, gas and electric…” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase | |||||
| 3 | 2,573 contacts → | ||||
Exact match “Since 1934, owners and builders have selected ACCO Engineered Systems to design, install, and maintain more than mechanical projects.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase | |||||
| 4 | 1,831 contacts → | ||||
Exact match “Yates Construction is part of The Yates Companies, Inc.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase | |||||
| 5 | 1,435 contacts → | ||||
Exact match “ISC is an industrial engineering and construction company specializing in comprehensive electrical, instrumentation, and controls solutions.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase | |||||
| 6 | 1,403 contacts → | ||||
Exact match “Group, Inc.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase | |||||
| 7 | 1,354 contacts → | ||||
Exact match “Comfort Systems USA | Quality People.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase | |||||
| 8 | 1,227 contacts → | ||||
Exact match “Saulsbury Industries is a full-service Engineering Procurement and Construction (EPC) contractor that provides engineering, general construction, electrical & instrumentation…” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase | |||||
| 9 | 1,203 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase | |||||
| 10 | 1,088 contacts → | ||||
Exact match “McKenney’s is the Southeast’s most trusted name in facility construction, operation and maintenance.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase | |||||
| 11 | 1,025 contacts → | ||||
Exact match “Harris is a leading national mechanical contractor specializing in design and engineering, construction, controls, service, manufacturing, conveyors and end-to-end building…” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase | |||||
| 12 | 930 contacts → | ||||
Exact match “Prime Controls was established as a Main Automation Contractor to provide customers a sole source solution for Industrial Automation services and products.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase | |||||
| 13 | 778 contacts → | ||||
Exact match “WELCOME TO OUR WEBSITE!” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase | |||||
| 14 | 730 contacts → | ||||
Exact match “Loenbro is a trusted, long-term construction lifecycle partner to thousands of customers across the U.S.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase | |||||
| 15 | 718 contacts → | ||||
Exact match “Apollo is based in Kennewick, Washington, performing Full Mechanical projects across the United States and around the world.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase | |||||
| 16 | 717 contacts → | ||||
Exact match “Our story began in 1994 with a simple vision: Build a company that does things right.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase | |||||
| 17 | 710 contacts → | ||||
Exact match “Established in 1963, Baker Group is Iowa’s premier full-service specialty contractor-serving commercial, industrial, institutional, and mission-critical markets across the country.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase | |||||
| 18 | 669 contacts → | ||||
Exact match “The Newtron Group is one of the largest privately owned Specialty Industrial Construction companies in the United States and is among the nation's leading Industrial Electrical…” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase | |||||
| 19 | 666 contacts → | ||||
Exact match “M.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase | |||||
| 20 | 666 contacts → | ||||
Exact match “Electric Power Systems is an independent electrical testing & engineering organization.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase | |||||
| 21 | 664 contacts → | ||||
Exact match “Wunderlich-Malec Engineering is a nationally recognized, 100% employee-owned leader in advanced engineering and control system solutions.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase | |||||
| 22 | 662 contacts → | ||||
Exact match “As one of the nation’s premier electrical contractors, we don’t just provide high-quality services.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase | |||||
| 23 | 655 contacts → | ||||
Exact match “DwyerOmega is a trusted global leader in sensing, instrumentation, and process control solutions, supporting HVAC, industrial, manufacturing, and research applications where…” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase | |||||
| 24 | 615 contacts → | ||||
Exact match “Since 1923, Alterman has provided electrical construction on many of San Antonio and Austin's most impressive landmarks and contemporary structures.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase | |||||
| 25 | 592 contacts → | ||||
Exact match “At F.E.” Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “instrumentation contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 4,552 instrumentation contractors based in the United States
See the full list, filter by size, metro and specialty, and access 47,771 tracked professional contacts with verified work emails. Direct dials are available where recorded.
Free signup · no credit card
Instrumentation contractors based in the United States at a glance
As of Oct 27, 2026Companies by employee count
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 4,552 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “instrumentation contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- 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 displayed company carries at least one verified work email. RevenueBase tracks 47,771 professional contacts with verified work emails across the full matched dataset. 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 October 27, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Instrumentation contractors by metro
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “instrumentation contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many instrumentation contractors are there based in the United States?
RevenueBase identified 4,552 company matches for instrumentation contractors associated with the United States as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
MMR Group tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most instrumentation contractors?
Houston leads with 122 company records, followed by New York (34) and Phoenix (29).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 47,771 professional contacts with verified work emails tracked across these 4,552 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 27, 2026.
Ready to reach these companies? Verified emails and direct dials for all 4,552 instrumentation contractors based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Instrumentation contractors by geography
- Instrumentation contractors based in Perth, Australia
- Instrumentation contractors based in Belo Horizonte, Brazil
- Instrumentation contractors based in Curitiba, Brazil
- Instrumentation contractors based in Rio De Janeiro, Brazil
- Instrumentation contractors based in Sao Paulo, Brazil
- Instrumentation contractors based in Calgary, Canada
- Instrumentation contractors based in Edmonton, Canada
- Instrumentation contractors based in Mississauga, Canada
- Instrumentation contractors based in Ahmedabad, India
- Instrumentation contractors based in Bangalore, India
- Instrumentation contractors based in Chennai, India
- Instrumentation contractors based in Delhi, India
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 SmartSearch, 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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Instrumentation contractors based in Perth, Australia
- Instrumentation contractors based in Belo Horizonte, Brazil
- Instrumentation contractors based in Curitiba, Brazil
- Instrumentation contractors based in Rio De Janeiro, Brazil
- Instrumentation contractors based in Sao Paulo, Brazil
- Instrumentation contractors based in Calgary, Canada
Company intelligence · public preview
Top 25 instrumentation contractors based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 4,552 matching company records for instrumentation contractors based in the United States, with 128,781 tracked contacts and 47,771 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 27, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 instrumentation contractors based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  MMR Groupmmrgrp.comHQ: Baton Rouge, LA, United StatesReported employees: 5,001-10,000 | Baton Rouge, LA, United States | 5,001-10,000 | Exact match | 3,379 contacts → |
“At MMR we believe that no matter how much you achieve, you should never forget where you came from.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Entrust Solutions Groupentrustsol.comHQ: Lisle, IL, United StatesReported employees: 1,001-5,000 | Lisle, IL, United States | 1,001-5,000 | Exact match | 3,020 contacts → |
“ENTRUST Solutions Group, an ENR Top 100 company, provides comprehensive and dependable engineering, consulting, and automation services to pipeline companies, gas and electric…” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Acco Engineered Systemsaccoes.comHQ: Pasadena, CA, United StatesReported employees: 5,001-10,000 | Pasadena, CA, United States | 5,001-10,000 | Exact match | 2,573 contacts → |
“Since 1934, owners and builders have selected ACCO Engineered Systems to design, install, and maintain more than mechanical projects.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Yates Constructionwgyates.comHQ: Philadelphia, MS, United StatesReported employees: 5,001-10,000 | Philadelphia, MS, United States | 5,001-10,000 | Exact match | 1,831 contacts → |
“Yates Construction is part of The Yates Companies, Inc.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  ISC Constructors, L.L.Ciscgrp.comHQ: Baton Rouge, LA, United StatesReported employees: 1,001-5,000 | Baton Rouge, LA, United States | 1,001-5,000 | Exact match | 1,435 contacts → |
“ISC is an industrial engineering and construction company specializing in comprehensive electrical, instrumentation, and controls solutions.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  CCC Group, INCcccgroupinc.comHQ: San Antonio, TX, United StatesReported employees: 1,001-5,000 | San Antonio, TX, United States | 1,001-5,000 | Exact match | 1,403 contacts → |
“Group, Inc.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Comfort Systems USAcomfortsystemsusa.comHQ: Houston, TX, United StatesReported employees: 10001+ | Houston, TX, United States | 10001+ | Exact match | 1,354 contacts → |
“Comfort Systems USA | Quality People.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Saulsburysaulsbury.com HQ: Odessa, TX, United StatesReported employees: 1,001-5,000 | Odessa, TX, United States | 1,001-5,000 | Exact match | 1,227 contacts → |
“Saulsbury Industries is a full-service Engineering Procurement and Construction (EPC) contractor that provides engineering, general construction, electrical & instrumentation…” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Englobalenglobal.comHQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 1,203 contacts → |
“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…” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Mckenney's, INCmckenneys.comHQ: Atlanta, GA, United StatesReported employees: 1,001-5,000 | Atlanta, GA, United States | 1,001-5,000 | Exact match | 1,088 contacts → |
“McKenney’s is the Southeast’s most trusted name in facility construction, operation and maintenance.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Harrisharriscompany.com HQ: St. Paul, MN, United StatesReported employees: 1,001-5,000 | St. Paul, MN, United States | 1,001-5,000 | Exact match | 1,025 contacts → |
“Harris is a leading national mechanical contractor specializing in design and engineering, construction, controls, service, manufacturing, conveyors and end-to-end building…” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Prime Controlsprime-controls.comHQ: Lewisville, TX, United StatesReported employees: 1,001-5,000 | Lewisville, TX, United States | 1,001-5,000 | Exact match | 930 contacts → |
“Prime Controls was established as a Main Automation Contractor to provide customers a sole source solution for Industrial Automation services and products.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Elec-Tech Electrical Contractorselectechca.com HQ: Long Beach, CA, United StatesReported employees: Not recorded | Long Beach, CA, United States | Not recorded | Exact match | 778 contacts → |
“WELCOME TO OUR WEBSITE!” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Loenbroloenbro.com HQ: Westminster, CO, United StatesReported employees: 1,001-5,000 | Westminster, CO, United States | 1,001-5,000 | Exact match | 730 contacts → |
“Loenbro is a trusted, long-term construction lifecycle partner to thousands of customers across the U.S.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Apollo Mechanical Contractorsapollomech.comHQ: Kennewick, WA, United StatesReported employees: 1,001-5,000 | Kennewick, WA, United States | 1,001-5,000 | Exact match | 718 contacts → |
“Apollo is based in Kennewick, Washington, performing Full Mechanical projects across the United States and around the world.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Prism Electricprismelectric.com HQ: Garland, TX, United StatesReported employees: 1,001-5,000 | Garland, TX, United States | 1,001-5,000 | Exact match | 717 contacts → |
“Our story began in 1994 with a simple vision: Build a company that does things right.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Baker Groupthebakergroup.comHQ: Ankeny, IA, United StatesReported employees: 1,001-5,000 | Ankeny, IA, United States | 1,001-5,000 | Exact match | 710 contacts → |
“Established in 1963, Baker Group is Iowa’s premier full-service specialty contractor-serving commercial, industrial, institutional, and mission-critical markets across the country.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  The Newtron Groupthenewtrongroup.comHQ: Baton Rouge, LA, United StatesReported employees: 1,001-5,000 | Baton Rouge, LA, United States | 1,001-5,000 | Exact match | 669 contacts → |
“The Newtron Group is one of the largest privately owned Specialty Industrial Construction companies in the United States and is among the nation's leading Industrial Electrical…” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  M. J. Electric, LLCmjelectric.comHQ: Iron Mountain, MI, United StatesReported employees: 1,001-5,000 | Iron Mountain, MI, United States | 1,001-5,000 | Exact match | 666 contacts → |
“M.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Electric Power Systemsvoltyx.comHQ: Maryland Heights, MO, United StatesReported employees: 501-1,000 | Maryland Heights, MO, United States | 501-1,000 | Exact match | 666 contacts → |
“Electric Power Systems is an independent electrical testing & engineering organization.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Wunderlich-Malec Engineering, INCwmeng.comHQ: Eden Prairie, MN, United StatesReported employees: 501-1,000 | Eden Prairie, MN, United States | 501-1,000 | Exact match | 664 contacts → |
“Wunderlich-Malec Engineering is a nationally recognized, 100% employee-owned leader in advanced engineering and control system solutions.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Cache Valley Electriccve.com HQ: Logan, UT, United StatesReported employees: 1,001-5,000 | Logan, UT, United States | 1,001-5,000 | Exact match | 662 contacts → |
“As one of the nation’s premier electrical contractors, we don’t just provide high-quality services.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Dwyeromegadwyeromega.com HQ: Michigan City, IN, United StatesReported employees: 1,001-5,000 | Michigan City, IN, United States | 1,001-5,000 | Exact match | 655 contacts → |
“DwyerOmega is a trusted global leader in sensing, instrumentation, and process control solutions, supporting HVAC, industrial, manufacturing, and research applications where…” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Alterman, INCgoalterman.comHQ: Live Oak, TX, United StatesReported employees: 501-1,000 | Live Oak, TX, United States | 501-1,000 | Exact match | 615 contacts → |
“Since 1923, Alterman has provided electrical construction on many of San Antonio and Austin's most impressive landmarks and contemporary structures.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  F.E. Moran Group Of Companiesfemoran.comHQ: Northbrook, IL, United StatesReported employees: 1,001-5,000 | Northbrook, IL, United States | 1,001-5,000 | Exact match | 592 contacts → |
“At F.E.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 4,552 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Instrumentation contractors: dataset insights
October 27, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
4,542 records in the displayed employee bands.
10 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 4,552 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 27, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Instrumentation contractors by metro
Questions about this company list
What does Exact match mean for instrumentation contractors?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many instrumentation contractors did RevenueBase find based in the United States?
The saved snapshot records 4,552 matching company records, 128,781 tracked contacts and 47,771 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 27, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Instrumentation contractors by geography
- Instrumentation contractors based in Perth, Australia
- Instrumentation contractors based in Belo Horizonte, Brazil
- Instrumentation contractors based in Curitiba, Brazil
- Instrumentation contractors based in Rio De Janeiro, Brazil
- Instrumentation contractors based in Sao Paulo, Brazil
- Instrumentation contractors based in Calgary, Canada
- Instrumentation contractors based in Edmonton, Canada
- Instrumentation contractors based in Mississauga, Canada
- Instrumentation contractors based in Ahmedabad, India
- Instrumentation contractors based in Bangalore, India
- Instrumentation contractors based in Chennai, India
- Instrumentation contractors based in Delhi, India
Cite this list
RevenueBase Data Team. Top 25 instrumentation contractors based in the United States. Snapshot: October 27, 2026. https://revenuebase.ai/companies/instrumentation-contractors/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Instrumentation contractors based in Perth, Australia
- Instrumentation contractors based in Belo Horizonte, Brazil
- Instrumentation contractors based in Curitiba, Brazil
- Instrumentation contractors based in Rio De Janeiro, Brazil
- Instrumentation contractors based in Sao Paulo, Brazil
- Instrumentation contractors based in Calgary, Canada
Company intelligence · public preview
Top 25 instrumentation contractors based in the United States
RevenueBase records 4,552 matching company records for instrumentation contractors based in the United States, with 128,781 tracked contacts and 47,771 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 27, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 instrumentation contractors based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | MMR Groupmmrgrp.com HQ: Baton Rouge, LA, United StatesReported employees: 5,001-10,000 | Baton Rouge, LA, United States | 5,001-10,000 | Exact match | 3,379 contacts → |
“At MMR we believe that no matter how much you achieve, you should never forget where you came from.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Entrust Solutions Groupentrustsol.com HQ: Lisle, IL, United StatesReported employees: 1,001-5,000 | Lisle, IL, United States | 1,001-5,000 | Exact match | 3,020 contacts → |
“ENTRUST Solutions Group, an ENR Top 100 company, provides comprehensive and dependable engineering, consulting, and automation services to pipeline companies, gas and electric…” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Acco Engineered Systemsaccoes.com HQ: Pasadena, CA, United StatesReported employees: 5,001-10,000 | Pasadena, CA, United States | 5,001-10,000 | Exact match | 2,573 contacts → |
“Since 1934, owners and builders have selected ACCO Engineered Systems to design, install, and maintain more than mechanical projects.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Yates Constructionwgyates.com HQ: Philadelphia, MS, United StatesReported employees: 5,001-10,000 | Philadelphia, MS, United States | 5,001-10,000 | Exact match | 1,831 contacts → |
“Yates Construction is part of The Yates Companies, Inc.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | ISC Constructors, L.L.Ciscgrp.com HQ: Baton Rouge, LA, United StatesReported employees: 1,001-5,000 | Baton Rouge, LA, United States | 1,001-5,000 | Exact match | 1,435 contacts → |
“ISC is an industrial engineering and construction company specializing in comprehensive electrical, instrumentation, and controls solutions.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | CCC Group, INCcccgroupinc.com HQ: San Antonio, TX, United StatesReported employees: 1,001-5,000 | San Antonio, TX, United States | 1,001-5,000 | Exact match | 1,403 contacts → |
“Group, Inc.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Comfort Systems USAcomfortsystemsusa.com HQ: Houston, TX, United StatesReported employees: 10001+ | Houston, TX, United States | 10001+ | Exact match | 1,354 contacts → |
“Comfort Systems USA | Quality People.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Saulsburysaulsbury.com HQ: Odessa, TX, United StatesReported employees: 1,001-5,000 | Odessa, TX, United States | 1,001-5,000 | Exact match | 1,227 contacts → |
“Saulsbury Industries is a full-service Engineering Procurement and Construction (EPC) contractor that provides engineering, general construction, electrical & instrumentation…” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Englobalenglobal.com HQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 1,203 contacts → |
“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…” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Mckenney's, INCmckenneys.com HQ: Atlanta, GA, United StatesReported employees: 1,001-5,000 | Atlanta, GA, United States | 1,001-5,000 | Exact match | 1,088 contacts → |
“McKenney’s is the Southeast’s most trusted name in facility construction, operation and maintenance.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Harrisharriscompany.com HQ: St. Paul, MN, United StatesReported employees: 1,001-5,000 | St. Paul, MN, United States | 1,001-5,000 | Exact match | 1,025 contacts → |
“Harris is a leading national mechanical contractor specializing in design and engineering, construction, controls, service, manufacturing, conveyors and end-to-end building…” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Prime Controlsprime-controls.com HQ: Lewisville, TX, United StatesReported employees: 1,001-5,000 | Lewisville, TX, United States | 1,001-5,000 | Exact match | 930 contacts → |
“Prime Controls was established as a Main Automation Contractor to provide customers a sole source solution for Industrial Automation services and products.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Elec-Tech Electrical Contractorselectechca.com HQ: Long Beach, CA, United StatesReported employees: Not recorded | Long Beach, CA, United States | Not recorded | Exact match | 778 contacts → |
“WELCOME TO OUR WEBSITE!” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Loenbroloenbro.com HQ: Westminster, CO, United StatesReported employees: 1,001-5,000 | Westminster, CO, United States | 1,001-5,000 | Exact match | 730 contacts → |
“Loenbro is a trusted, long-term construction lifecycle partner to thousands of customers across the U.S.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Apollo Mechanical Contractorsapollomech.com HQ: Kennewick, WA, United StatesReported employees: 1,001-5,000 | Kennewick, WA, United States | 1,001-5,000 | Exact match | 718 contacts → |
“Apollo is based in Kennewick, Washington, performing Full Mechanical projects across the United States and around the world.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Prism Electricprismelectric.com HQ: Garland, TX, United StatesReported employees: 1,001-5,000 | Garland, TX, United States | 1,001-5,000 | Exact match | 717 contacts → |
“Our story began in 1994 with a simple vision: Build a company that does things right.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Baker Groupthebakergroup.com HQ: Ankeny, IA, United StatesReported employees: 1,001-5,000 | Ankeny, IA, United States | 1,001-5,000 | Exact match | 710 contacts → |
“Established in 1963, Baker Group is Iowa’s premier full-service specialty contractor-serving commercial, industrial, institutional, and mission-critical markets across the country.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | The Newtron Groupthenewtrongroup.com HQ: Baton Rouge, LA, United StatesReported employees: 1,001-5,000 | Baton Rouge, LA, United States | 1,001-5,000 | Exact match | 669 contacts → |
“The Newtron Group is one of the largest privately owned Specialty Industrial Construction companies in the United States and is among the nation's leading Industrial Electrical…” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | M. J. Electric, LLCmjelectric.com HQ: Iron Mountain, MI, United StatesReported employees: 1,001-5,000 | Iron Mountain, MI, United States | 1,001-5,000 | Exact match | 666 contacts → |
“M.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Electric Power Systemsvoltyx.com HQ: Maryland Heights, MO, United StatesReported employees: 501-1,000 | Maryland Heights, MO, United States | 501-1,000 | Exact match | 666 contacts → |
“Electric Power Systems is an independent electrical testing & engineering organization.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Wunderlich-Malec Engineering, INCwmeng.com HQ: Eden Prairie, MN, United StatesReported employees: 501-1,000 | Eden Prairie, MN, United States | 501-1,000 | Exact match | 664 contacts → |
“Wunderlich-Malec Engineering is a nationally recognized, 100% employee-owned leader in advanced engineering and control system solutions.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Cache Valley Electriccve.com HQ: Logan, UT, United StatesReported employees: 1,001-5,000 | Logan, UT, United States | 1,001-5,000 | Exact match | 662 contacts → |
“As one of the nation’s premier electrical contractors, we don’t just provide high-quality services.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Dwyeromegadwyeromega.com HQ: Michigan City, IN, United StatesReported employees: 1,001-5,000 | Michigan City, IN, United States | 1,001-5,000 | Exact match | 655 contacts → |
“DwyerOmega is a trusted global leader in sensing, instrumentation, and process control solutions, supporting HVAC, industrial, manufacturing, and research applications where…” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Alterman, INCgoalterman.com HQ: Live Oak, TX, United StatesReported employees: 501-1,000 | Live Oak, TX, United States | 501-1,000 | Exact match | 615 contacts → |
“Since 1923, Alterman has provided electrical construction on many of San Antonio and Austin's most impressive landmarks and contemporary structures.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | F.E. Moran Group Of Companiesfemoran.com HQ: Northbrook, IL, United StatesReported employees: 1,001-5,000 | Northbrook, IL, United States | 1,001-5,000 | Exact match | 592 contacts → |
“At F.E.” Recorded description excerpt · October 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 4,552 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Instrumentation contractors: dataset insights
October 27, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
4,542 records in the displayed employee bands.
10 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 4,552 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 27, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Instrumentation contractors by metro
Questions about this company list
What does Exact match mean for instrumentation contractors?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many instrumentation contractors did RevenueBase find based in the United States?
The saved snapshot records 4,552 matching company records, 128,781 tracked contacts and 47,771 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 27, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Instrumentation contractors by geography
- Instrumentation contractors based in Perth, Australia
- Instrumentation contractors based in Belo Horizonte, Brazil
- Instrumentation contractors based in Curitiba, Brazil
- Instrumentation contractors based in Rio De Janeiro, Brazil
- Instrumentation contractors based in Sao Paulo, Brazil
- Instrumentation contractors based in Calgary, Canada
- Instrumentation contractors based in Edmonton, Canada
- Instrumentation contractors based in Mississauga, Canada
- Instrumentation contractors based in Ahmedabad, India
- Instrumentation contractors based in Bangalore, India
- Instrumentation contractors based in Chennai, India
- Instrumentation contractors based in Delhi, India
Cite this list
RevenueBase Data Team. Top 25 instrumentation contractors based in the United States. Snapshot: October 27, 2026. https://revenuebase.ai/companies/instrumentation-contractors/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Instrumentation contractors based in Perth, Australia
- Instrumentation contractors based in Belo Horizonte, Brazil
- Instrumentation contractors based in Curitiba, Brazil
- Instrumentation contractors based in Rio De Janeiro, Brazil
- Instrumentation contractors based in Sao Paulo, Brazil
- Instrumentation contractors based in Calgary, Canada