Company lists · Data refreshed November 2026

Top 25 Boiler inspection services based in the United States

RevenueBase identified 279 company matches for boiler inspection services associated with the United States as of November 2026 and tracks 4,218 professional contacts across them, including 1,514 with verified work emails. Houston is the largest hub.

This list covers company matches for boiler inspection 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
279Companies
4,218Contacts tracked
1,514Verified emails
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The 25 largest boiler inspection services based in the United States

Ranked by team size
Top 25 of 279 company matches for boiler inspection services based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchHuntersville, GA, United StatesHQ recorded Nov 6, 2026201-500299 contacts →

Exact match

“Structural Integrity Associates is the most-trusted provider of proven engineering services for the energy and process industries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchLancaster, OH, United StatesHQ recorded Nov 6, 2026201-500216 contacts →

Exact match

“At Diamond Power, we partner with customers to tackle even the most complex boiler cleaning issues.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchDallas, TX, United StatesHQ recorded Nov 6, 2026201-500203 contacts →

Exact match

“Cleaver-Brooks Sales and Service, is one of the most innovative and fastest growing boiler services companies in the United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchPasadena, TX, United StatesHQ recorded Nov 6, 2026501-1,000179 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
5Exact matchDeer Park, TX, United StatesHQ recorded Nov 6, 20261,001-5,000164 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
6Exact matchHouston, TX, United StatesHQ recorded Nov 6, 2026201-500164 contacts →

Exact match

“About Us Cutting-edge technologies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchLouisville, TX, United StatesHQ recorded Nov 6, 202651-200161 contacts →

Exact match

“WARE is a commercial and industrial, boiler rental and service company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchBlairsville, IL, United StatesHQ recorded Nov 6, 2026201-50095 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchWest Norriton, PA, United StatesHQ recorded Nov 6, 202651-20095 contacts →

Exact match

“Delval has provided thousands of packaged boilers to our trusted clients, more than any other supplier in the region.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchColumbus, OH, United StatesHQ recorded Nov 6, 202651-20092 contacts →

Exact match

“NBBI is the worldwide leader in pressure equipment safety.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchCape Coral, FL, United StatesHQ recorded Nov 6, 202651-20084 contacts →

Exact match

“Turbine Generator Maintenance, Inc.(TGM) is the premier solution provider for steam and combustion turbine and generator inspection, testing, and repair.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchMidland, TX, United StatesHQ recorded Nov 6, 2026201-50080 contacts →

Exact match

“Contract Hitch Personnel Inspection and Testing: • Certified Welding Inspectors • API Inspectors (510,570,653) • QA/QC Inspectors • NACE Coating Inspectors (Levels • I&E…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchCoolidge, GA, United StatesHQ recorded Nov 6, 2026201-50077 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchNorfolk, VA, United StatesHQ recorded Nov 6, 202651-20073 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchAbilene, TX, United StatesHQ recorded Nov 6, 2026201-50070 contacts →

Exact match

“RENTECH was founded in 1996 to build boilers for people who know and care.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchBessemer, AL, United StatesHQ recorded Nov 6, 202651-20063 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchMountlake Terrace, OR, United StatesHQ recorded Nov 6, 202651-20061 contacts →

Exact match

“Since 1964, Cole Industrial has been the Northwest's leading provider of new, used and rental boiler equipment for the process and comfort heating needs of nearly every industry…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchFremont, CA, United StatesHQ recorded Nov 6, 202651-20057 contacts →

Exact match

“Since 1967 Nationwide Boiler has provided reliable rental boilers to process steam users across the globe.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchHayward, CA, United StatesHQ recorded Nov 6, 202611-5050 contacts →

Exact match

“Since being founded in 1976, Bay City Boiler has grown to become the largest provider of commercial and industrial boiler service and sales in Northern California.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchDelanco, NJ, United StatesHQ recorded Nov 6, 202651-20048 contacts →

Exact match

“Powerhouse is "The Ultimate Boiler Expert".”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchHouston, TX, United StatesHQ recorded Nov 6, 202651-20040 contacts →

Exact match

“GCB Industries | Trusted Experts in Fired-Equipment Solutions GCB Industries is a mechanical and fired-equipment services platform specializing in boiler plants, central utility…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchPasadena, LA, United StatesHQ recorded Nov 6, 202651-20039 contacts →

Exact match

“Boiler Problem?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchMarlborough, MA, United StatesHQ recorded Nov 6, 2026501-1,00036 contacts →

Exact match

“Keeping boilers running efficiently is critical.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchSan Diego, CA, United StatesHQ recorded Nov 6, 202651-20036 contacts →

Exact match

“Our mission is to provide the highest industry standards through quality inspection & testing.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchEnfield, CT, United StatesHQ recorded Nov 6, 202651-20034 contacts →

Exact match

“Integrated engineering services company providing visual inspections for boilers and pressure parts, non-destructive testing, software for operator training and operator…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 279 boiler inspection services based in the United States

See the full list, filter by size, metro and specialty, and access 1,514 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Boiler inspection services based in the United States at a glance

As of Nov 6, 2026
35.9%Verified-email coverage
15.1Average contacts per company
11-50Median size (employees)
5.7%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
102
11-50
118
51-200
41
201-500
12
501-1,000
2
1,001-5,000
1

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 279 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 “boiler inspection 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 1,514 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.

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 “boiler inspection services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many boiler inspection services are there based in the United States?

RevenueBase identified 279 company matches for boiler inspection 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?

Structural Integrity Associates tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most boiler inspection services?

Houston leads with 16 company records, followed by New York (7) and Bronx (4).

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 1,514 professional contacts with verified work emails tracked across these 279 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.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase 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.