Company lists · Data refreshed November 2026
Top 24 Electrical systems testing services based in the United States
RevenueBase identified 1,271 company matches for electrical systems testing services associated with the United States as of November 2026 and tracks 17,892 professional contacts across them, including 6,483 with verified work emails. Houston is the largest hub.
This list covers company matches for electrical systems testing services 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 November 6, 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 24 largest electrical systems testing services based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,324 contacts → | ||||
Exact match “Shermco Industries is a provider of safe, reliable testing, repair, professional training, electrical outage planning, maintenance and analysis of rotating apparatus and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 961 contacts → | ||||
Exact match “Applied Technical Services assists commercial and industrial clients by providing inspection, testing, consulting engineering, and calibration services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 678 contacts → | ||||
Exact match “Electric Power Systems is an independent electrical testing & engineering organization.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 662 contacts → | ||||
Exact match “Doble is the world’s most trusted brand in electrical diagnostics.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 498 contacts → | ||||
Exact match “Welcome to SOCOTEC in the US, Trusted Expertise, From the Ground Up.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 375 contacts → | ||||
Exact match “Life Cycle Testing, Inspection, Certification & Engineering Solutions for Mission Critical Facilities Worldwide Commitment to Diversity – FST is dedicated to non-discriminatory…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 290 contacts → | ||||
Exact match “Electrical and communication services including design, installation, testing, long-term service, and maintenance.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 270 contacts → | ||||
Exact match “In business since 1971, Electrical Reliability Services, Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 219 contacts → | ||||
Exact match “SDMyers is the industry leader in transformer and substation maintenance and electric power system reliability.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 203 contacts → | ||||
Exact match “Hilscher-Clarke Electric Company is a full service electrical contractor, with more than 100 years experience in the commercial, industrial, and residential markets.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 195 contacts → | ||||
Exact match “Eurofins Electrical & Electronics North America is a leading testing and certification laboratory, providing a unique array of testing services and accreditations for regulatory…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 194 contacts → | ||||
Exact match “Electrical; Fire Alarm; Kitchen equipment; low voltage network, voice and fiber optic cabling; AV; Sound and Security services for residential, commercial and industrial customers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 191 contacts → | ||||
Exact match “Twining has continued to expand and evolve since its inception more than a century ago.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 187 contacts → | ||||
Exact match “GMR has become known as the "Industry Best Practice" for helping facilities document existing conditions, prepare for improvements, and minimize risk.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 179 contacts → | ||||
Exact match “The TechCorr name is synonymous with safe, quality inspection services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 178 contacts → | ||||
Exact match “Certerra provides technology-enabled testing, inspection, and certification services for new product development, engineering solutions to manage assets, and quality assurance for…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 176 contacts → | ||||
Exact match “Rubicon Technical Services (RTS) offers innovative solutions for commissioning, testing, optimizing, operating, and maintaining critical facilities that depend on electrical…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 164 contacts → | ||||
Exact match “QualSpec is a leading industrial inspection firm headquartered in Houston, Texas.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 164 contacts → | ||||
Exact match “About Us Cutting-edge technologies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 156 contacts → | ||||
Exact match “Since 1986, Burgess Construction Consultants, Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 156 contacts → | ||||
Exact match “Trialon is now Element!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 150 contacts → | ||||
Exact match “Hood Patterson & Dewar (HP & D) is a customer-driven, employee-owned collaborative team of engineers, technicians, and service professionals, offering: • Electrical and mechanical…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 122 contacts → | ||||
Exact match “AEIS, LLC is a testing, inspection, and certification (TIC) agency that increases quality and safety outcomes for major infrastructure.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 108 contacts → | ||||
Exact match “DIT-MCO International's proven automated product testing solutions for wired assemblies provide reliable service to industrial, commercial, and military customers.” Recorded in the RevenueBase company graph · Nov 6, 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 “electrical systems testing services”. 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 24 of 1,271 electrical systems testing services based in the United States
See the full list, filter by size, metro and specialty, and access 6,483 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Electrical systems testing services based in the United States at a glance
As of Nov 6, 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 1,271 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 “electrical systems testing services” 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 6,483 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 November 6, 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.
Electrical systems testing services 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 “electrical systems testing services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many electrical systems testing services are there based in the United States?
RevenueBase identified 1,271 company matches for electrical systems testing services associated with the United States as of November 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?
Shermco Industries tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most electrical systems testing services?
Houston leads with 26 company records, followed by New York (18) and Los Angeles (13).
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 6,483 professional contacts with verified work emails tracked across these 1,271 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 November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 1,271 electrical systems testing services based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Electrical systems testing services by geography
- Electrical systems testing services based in Sao Paulo, Brazil
- Electrical systems testing services based in London, United Kingdom
- Electrical systems testing services based in Houston, United States
- Electrical systems testing services based in Australia
- Electrical systems testing services based in Belgium
- Electrical systems testing services based in Brazil
- Electrical systems testing services based in Canada
- Electrical systems testing services based in Chile
- Electrical systems testing services based in Colombia
- Electrical systems testing services based in France
- Electrical systems testing services based in Germany
- Electrical systems testing services based in 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
- Electrical systems testing services based in Sao Paulo, Brazil
- Electrical systems testing services based in London, United Kingdom
- Electrical systems testing services based in Houston, United States
- Electrical systems testing services based in Australia
- Electrical systems testing services based in Belgium
- Electrical systems testing services based in Brazil
Company intelligence · public preview
Top 24 electrical systems testing services 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 1,271 matching company records for electrical systems testing services based in the United States, with 17,892 tracked contacts and 6,483 verified work emails.
This public preview shows 24 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 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 24 electrical systems testing services 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 |  Shermco Industriesshermco.comHQ: Irving, OK, United StatesReported employees: 1,001-5,000 | Irving, OK, United States | 1,001-5,000 | Exact match | 1,324 contacts → |
“Shermco Industries is a provider of safe, reliable testing, repair, professional training, electrical outage planning, maintenance and analysis of rotating apparatus and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Applied Technical Services, LLCatslab.comHQ: Marietta, GA, United StatesReported employees: 1,001-5,000 | Marietta, GA, United States | 1,001-5,000 | Exact match | 961 contacts → |
“Applied Technical Services assists commercial and industrial clients by providing inspection, testing, consulting engineering, and calibration services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Electric Power Systemsvoltyx.comHQ: Maryland Heights, MI, United StatesReported employees: 501-1,000 | Maryland Heights, MI, United States | 501-1,000 | Exact match | 678 contacts → |
“Electric Power Systems is an independent electrical testing & engineering organization.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Doble Engineeringdoble.comHQ: Marlborough, MA, United StatesReported employees: 501-1,000 | Marlborough, MA, United States | 501-1,000 | Exact match | 662 contacts → |
“Doble is the world’s most trusted brand in electrical diagnostics.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Socotec USsocotec.usHQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 498 contacts → |
“Welcome to SOCOTEC in the US, Trusted Expertise, From the Ground Up.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  FST Technical Servicesfsttechnical.comHQ: Chandler, PA, United StatesReported employees: 201-500 | Chandler, PA, United States | 201-500 | Exact match | 375 contacts → |
“Life Cycle Testing, Inspection, Certification & Engineering Solutions for Mission Critical Facilities Worldwide Commitment to Diversity – FST is dedicated to non-discriminatory…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Titan Electrictitan-elec.comHQ: Itasca, IL, United StatesReported employees: 501-1,000 | Itasca, IL, United States | 501-1,000 | Exact match | 290 contacts → |
“Electrical and communication services including design, installation, testing, long-term service, and maintenance.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Electrical Reliability Services, INCers.vertiv.comHQ: Westerville, SC, United StatesReported employees: 201-500 | Westerville, SC, United States | 201-500 | Exact match | 270 contacts → |
“In business since 1971, Electrical Reliability Services, Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Sdmyerssdmyers.comHQ: Tallmadge, OH, United StatesReported employees: 201-500 | Tallmadge, OH, United States | 201-500 | Exact match | 219 contacts → |
“SDMyers is the industry leader in transformer and substation maintenance and electric power system reliability.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Hilscher-Clarke Electric Companyhilscher-clarke.comHQ: Canton, OH, United StatesReported employees: 201-500 | Canton, OH, United States | 201-500 | Exact match | 203 contacts → |
“Hilscher-Clarke Electric Company is a full service electrical contractor, with more than 100 years experience in the commercial, industrial, and residential markets.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | HQ: Baltimore, TX, United StatesReported employees: 201-500 | Baltimore, TX, United States | 201-500 | Exact match | 195 contacts → |
“Eurofins Electrical & Electronics North America is a leading testing and certification laboratory, providing a unique array of testing services and accreditations for regulatory…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  F.D. Hayes Electricfdhayes.comHQ: Lansing, United StatesReported employees: 51-200 | Lansing, United States | 51-200 | Exact match | 194 contacts → |
“Electrical; Fire Alarm; Kitchen equipment; low voltage network, voice and fiber optic cabling; AV; Sound and Security services for residential, commercial and industrial customers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Twining, INCtwininginc.comHQ: Long Beach, CA, United StatesReported employees: 201-500 | Long Beach, CA, United States | 201-500 | Exact match | 191 contacts → |
“Twining has continued to expand and evolve since its inception more than a century ago.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  GMRgmr1.comHQ: Heath, TX, United StatesReported employees: 51-200 | Heath, TX, United States | 51-200 | Exact match | 187 contacts → |
“GMR has become known as the "Industry Best Practice" for helping facilities document existing conditions, prepare for improvements, and minimize risk.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Techcorr Usa, LLCtechcorr.com HQ: Pasadena, TX, United StatesReported employees: 501-1,000 | Pasadena, TX, United States | 501-1,000 | Exact match | 179 contacts → |
“The TechCorr name is synonymous with safe, quality inspection services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Certerracerterra.comHQ: Las Vegas, NV, United StatesReported employees: 1,001-5,000 | Las Vegas, NV, United States | 1,001-5,000 | Exact match | 178 contacts → |
“Certerra provides technology-enabled testing, inspection, and certification services for new product development, engineering solutions to manage assets, and quality assurance for…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Rubicon Technical Services - RTSrubicontechservices.comHQ: Kennesaw, NJ, United StatesReported employees: 51-200 | Kennesaw, NJ, United States | 51-200 | Exact match | 176 contacts → |
“Rubicon Technical Services (RTS) offers innovative solutions for commissioning, testing, optimizing, operating, and maintaining critical facilities that depend on electrical…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Qualspecqualspecgroup.comHQ: Deer Park, TX, United StatesReported employees: 1,001-5,000 | Deer Park, TX, United States | 1,001-5,000 | Exact match | 164 contacts → |
“QualSpec is a leading industrial inspection firm headquartered in Houston, Texas.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Verispexverispex.comHQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 164 contacts → |
“About Us Cutting-edge technologies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Burgess Construction Consultants, INCburgess-inc.comHQ: Fairview, CO, United StatesReported employees: 201-500 | Fairview, CO, United States | 201-500 | Exact match | 156 contacts → |
“Since 1986, Burgess Construction Consultants, Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Trialon Corporationelement.comHQ: Burton, IN, United StatesReported employees: 501-1,000 | Burton, IN, United States | 501-1,000 | Exact match | 156 contacts → |
“Trialon is now Element!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Hood Patterson & Dewarhoodpd.comHQ: Norcross, GA, United StatesReported employees: 51-200 | Norcross, GA, United States | 51-200 | Exact match | 150 contacts → |
“Hood Patterson & Dewar (HP & D) is a customer-driven, employee-owned collaborative team of engineers, technicians, and service professionals, offering: • Electrical and mechanical…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Aeis LLCaeis.comHQ: South Plainfield, NJ, United StatesReported employees: 201-500 | South Plainfield, NJ, United States | 201-500 | Exact match | 122 contacts → |
“AEIS, LLC is a testing, inspection, and certification (TIC) agency that increases quality and safety outcomes for major infrastructure.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Dit-Mco Internationalditmco.comHQ: Kansas City, MO, United StatesReported employees: 51-200 | Kansas City, MO, United States | 51-200 | Exact match | 108 contacts → |
“DIT-MCO International's proven automated product testing solutions for wired assemblies provide reliable service to industrial, commercial, and military customers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 24 of 1,271 company matches
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Electrical systems testing services: dataset insights
November 6, 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
1,258 records in the displayed employee bands.
13 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 1,271 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: November 6, 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 ↗
Electrical systems testing services by metro
Questions about this company list
What does Exact match mean for electrical systems testing services?
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 electrical systems testing services did RevenueBase find based in the United States?
The saved snapshot records 1,271 matching company records, 17,892 tracked contacts and 6,483 verified emails. The public preview displays 24 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: November 6, 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
Electrical systems testing services by geography
- Electrical systems testing services based in Sao Paulo, Brazil
- Electrical systems testing services based in London, United Kingdom
- Electrical systems testing services based in Houston, United States
- Electrical systems testing services based in Australia
- Electrical systems testing services based in Belgium
- Electrical systems testing services based in Brazil
- Electrical systems testing services based in Canada
- Electrical systems testing services based in Chile
- Electrical systems testing services based in Colombia
- Electrical systems testing services based in France
- Electrical systems testing services based in Germany
- Electrical systems testing services based in India
Cite this list
RevenueBase Data Team. Top 24 electrical systems testing services based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/electrical-systems-testing-services/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
- Electrical systems testing services based in Sao Paulo, Brazil
- Electrical systems testing services based in London, United Kingdom
- Electrical systems testing services based in Houston, United States
- Electrical systems testing services based in Australia
- Electrical systems testing services based in Belgium
- Electrical systems testing services based in Brazil
Company intelligence · public preview
Top 24 electrical systems testing services based in the United States
RevenueBase records 1,271 matching company records for electrical systems testing services based in the United States, with 17,892 tracked contacts and 6,483 verified work emails.
This public preview shows 24 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 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 24 electrical systems testing services 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 | Shermco Industriesshermco.com HQ: Irving, OK, United StatesReported employees: 1,001-5,000 | Irving, OK, United States | 1,001-5,000 | Exact match | 1,324 contacts → |
“Shermco Industries is a provider of safe, reliable testing, repair, professional training, electrical outage planning, maintenance and analysis of rotating apparatus and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Applied Technical Services, LLCatslab.com HQ: Marietta, GA, United StatesReported employees: 1,001-5,000 | Marietta, GA, United States | 1,001-5,000 | Exact match | 961 contacts → |
“Applied Technical Services assists commercial and industrial clients by providing inspection, testing, consulting engineering, and calibration services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Electric Power Systemsvoltyx.com HQ: Maryland Heights, MI, United StatesReported employees: 501-1,000 | Maryland Heights, MI, United States | 501-1,000 | Exact match | 678 contacts → |
“Electric Power Systems is an independent electrical testing & engineering organization.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Doble Engineeringdoble.com HQ: Marlborough, MA, United StatesReported employees: 501-1,000 | Marlborough, MA, United States | 501-1,000 | Exact match | 662 contacts → |
“Doble is the world’s most trusted brand in electrical diagnostics.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Socotec USsocotec.us HQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 498 contacts → |
“Welcome to SOCOTEC in the US, Trusted Expertise, From the Ground Up.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | FST Technical Servicesfsttechnical.com HQ: Chandler, PA, United StatesReported employees: 201-500 | Chandler, PA, United States | 201-500 | Exact match | 375 contacts → |
“Life Cycle Testing, Inspection, Certification & Engineering Solutions for Mission Critical Facilities Worldwide Commitment to Diversity – FST is dedicated to non-discriminatory…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Titan Electrictitan-elec.com HQ: Itasca, IL, United StatesReported employees: 501-1,000 | Itasca, IL, United States | 501-1,000 | Exact match | 290 contacts → |
“Electrical and communication services including design, installation, testing, long-term service, and maintenance.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Electrical Reliability Services, INCers.vertiv.com HQ: Westerville, SC, United StatesReported employees: 201-500 | Westerville, SC, United States | 201-500 | Exact match | 270 contacts → |
“In business since 1971, Electrical Reliability Services, Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Sdmyerssdmyers.com HQ: Tallmadge, OH, United StatesReported employees: 201-500 | Tallmadge, OH, United States | 201-500 | Exact match | 219 contacts → |
“SDMyers is the industry leader in transformer and substation maintenance and electric power system reliability.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Hilscher-Clarke Electric Companyhilscher-clarke.com HQ: Canton, OH, United StatesReported employees: 201-500 | Canton, OH, United States | 201-500 | Exact match | 203 contacts → |
“Hilscher-Clarke Electric Company is a full service electrical contractor, with more than 100 years experience in the commercial, industrial, and residential markets.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | HQ: Baltimore, TX, United StatesReported employees: 201-500 | Baltimore, TX, United States | 201-500 | Exact match | 195 contacts → |
“Eurofins Electrical & Electronics North America is a leading testing and certification laboratory, providing a unique array of testing services and accreditations for regulatory…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | F.D. Hayes Electricfdhayes.com HQ: Lansing, United StatesReported employees: 51-200 | Lansing, United States | 51-200 | Exact match | 194 contacts → |
“Electrical; Fire Alarm; Kitchen equipment; low voltage network, voice and fiber optic cabling; AV; Sound and Security services for residential, commercial and industrial customers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Twining, INCtwininginc.com HQ: Long Beach, CA, United StatesReported employees: 201-500 | Long Beach, CA, United States | 201-500 | Exact match | 191 contacts → |
“Twining has continued to expand and evolve since its inception more than a century ago.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | GMRgmr1.com HQ: Heath, TX, United StatesReported employees: 51-200 | Heath, TX, United States | 51-200 | Exact match | 187 contacts → |
“GMR has become known as the "Industry Best Practice" for helping facilities document existing conditions, prepare for improvements, and minimize risk.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Techcorr Usa, LLCtechcorr.com HQ: Pasadena, TX, United StatesReported employees: 501-1,000 | Pasadena, TX, United States | 501-1,000 | Exact match | 179 contacts → |
“The TechCorr name is synonymous with safe, quality inspection services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Certerracerterra.com HQ: Las Vegas, NV, United StatesReported employees: 1,001-5,000 | Las Vegas, NV, United States | 1,001-5,000 | Exact match | 178 contacts → |
“Certerra provides technology-enabled testing, inspection, and certification services for new product development, engineering solutions to manage assets, and quality assurance for…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Rubicon Technical Services - RTSrubicontechservices.com HQ: Kennesaw, NJ, United StatesReported employees: 51-200 | Kennesaw, NJ, United States | 51-200 | Exact match | 176 contacts → |
“Rubicon Technical Services (RTS) offers innovative solutions for commissioning, testing, optimizing, operating, and maintaining critical facilities that depend on electrical…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Qualspecqualspecgroup.com HQ: Deer Park, TX, United StatesReported employees: 1,001-5,000 | Deer Park, TX, United States | 1,001-5,000 | Exact match | 164 contacts → |
“QualSpec is a leading industrial inspection firm headquartered in Houston, Texas.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Verispexverispex.com HQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 164 contacts → |
“About Us Cutting-edge technologies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Burgess Construction Consultants, INCburgess-inc.com HQ: Fairview, CO, United StatesReported employees: 201-500 | Fairview, CO, United States | 201-500 | Exact match | 156 contacts → |
“Since 1986, Burgess Construction Consultants, Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Trialon Corporationelement.com HQ: Burton, IN, United StatesReported employees: 501-1,000 | Burton, IN, United States | 501-1,000 | Exact match | 156 contacts → |
“Trialon is now Element!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Hood Patterson & Dewarhoodpd.com HQ: Norcross, GA, United StatesReported employees: 51-200 | Norcross, GA, United States | 51-200 | Exact match | 150 contacts → |
“Hood Patterson & Dewar (HP & D) is a customer-driven, employee-owned collaborative team of engineers, technicians, and service professionals, offering: • Electrical and mechanical…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Aeis LLCaeis.com HQ: South Plainfield, NJ, United StatesReported employees: 201-500 | South Plainfield, NJ, United States | 201-500 | Exact match | 122 contacts → |
“AEIS, LLC is a testing, inspection, and certification (TIC) agency that increases quality and safety outcomes for major infrastructure.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Dit-Mco Internationalditmco.com HQ: Kansas City, MO, United StatesReported employees: 51-200 | Kansas City, MO, United States | 51-200 | Exact match | 108 contacts → |
“DIT-MCO International's proven automated product testing solutions for wired assemblies provide reliable service to industrial, commercial, and military customers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 24 of 1,271 company matches
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Electrical systems testing services: dataset insights
November 6, 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
1,258 records in the displayed employee bands.
13 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 1,271 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: November 6, 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 ↗
Electrical systems testing services by metro
Questions about this company list
What does Exact match mean for electrical systems testing services?
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 electrical systems testing services did RevenueBase find based in the United States?
The saved snapshot records 1,271 matching company records, 17,892 tracked contacts and 6,483 verified emails. The public preview displays 24 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: November 6, 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
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Cite this list
RevenueBase Data Team. Top 24 electrical systems testing services based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/electrical-systems-testing-services/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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