Company lists · Data refreshed November 2026

Top 25 Boiler companies worldwide

RevenueBase identified 5,262 company matches for boiler companies worldwide as of November 2026 and tracks 58,729 professional contacts across them, including 11,233 with verified work emails. The United Kingdom is the largest market and London the largest hub.

This list covers company matches for boiler companies worldwide, 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. Country and city lists for boiler companies follow the table.

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
5,262Companies
58,729Contacts tracked
11,233Verified emails
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The 25 largest boiler companies worldwide

Ranked by team size
Top 25 of 5,262 company matches for boiler companies worldwide, 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 matchCheltenham, United KingdomHQ recorded Nov 6, 20265,001-10,0001,847 contacts →

Exact match

“Expertise | Solutions | Sustainability A FTSE-100 company, Spirax Sarco is the world's leading provider of steam system solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchPune, IndiaHQ recorded Nov 6, 20261,001-5,000920 contacts →

Exact match

“Thermax Babcock & Wilcox Energy Solutions (TBWES), a wholly-owned subsidiary of Thermax Limited, provides equipment and complete solutions for generating steam for process and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchThomasville, WI, United StatesHQ recorded Nov 6, 20261,001-5,000695 contacts →

Exact match

“Cleaver-Brooks, Inc, a manufacturer of boiler room products for over 90 years, is the only single source manufacturer and supplier of boiler room products including boilers…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchCape Town, South AfricaHQ recorded Nov 6, 20261,001-5,000679 contacts →

Exact match

“John Thompson is a leader in energy and environmental solutions through value engineering and innovation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchPedro Leopoldo, BrazilHQ recorded Nov 6, 2026501-1,000604 contacts →

Exact match

“A MECBRUN INDUSTRIAL é uma empresa situada no Município de Pedro Leopoldo (10 km do Aeroporto Internacional Tancredo Neves – Confins) – Minas Gerais.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchGebze, TürkiyeHQ recorded Nov 6, 2026501-1,000491 contacts →

Exact match

“Since its establishment in 1954 Alarko Sanayi ve Ticaret A.Ş.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchİstanbul, TürkiyeHQ recorded Nov 6, 2026501-1,000484 contacts →

Exact match

“1969 yılında faaliyetlerine başlayan ve 2013 yılı itibarıyla iklimlendirme sektöründe Avrupa’nın ilk üç şirketi arasında yer alan BDR Thermea Group bünyesine katılan Baymak…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchReggio Emilia, ItalyHQ recorded Nov 6, 2026501-1,000424 contacts →

Exact match

“Produciamo oltre 300 mila caldaie l’anno e commercializziamo apparecchi per riscaldamento e raffrescamento domestico in 50 paesi di tutto il Mondo, con dodici filiali commerciali…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchApeldoorn, NetherlandsHQ recorded Nov 6, 2026201-500410 contacts →

Exact match

“Remeha, the comfort innovators Remeha ontwikkelt al sinds 1935 voortdurend innovatieve en energiezuinige producten voor warmte en warm water, zowel voor woningen als utiliteit.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchNerac, FranceHQ recorded Nov 6, 2026501-1,000405 contacts →

Exact match

“BABCOCK WANSON offers a complete range of products and services for industrial boiler house.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchSertãozinho, BrazilHQ recorded Nov 6, 2026501-1,000356 contacts →

Exact match

“Empresa fabricante de caldeiras de alta pressão destinadas ao fornecimento de vapor para processo e geração em termoelétricas para os mercados de açúcar e álcool e alimentos.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchSan Nicolás De Los Garza, MexicoHQ recorded Nov 6, 2026501-1,000330 contacts →

Exact match

“CERREY, a leading Mexican company, is one of the main manufacturers of steam generators in the Americas.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchHull, United KingdomHQ recorded Nov 6, 2026501-1,000310 contacts →

Exact match

“The UK’s leading heating manufacturer, providing reliable, sustainable warmth through boilers, heat pumps and controls Rated Excellent on Trustpilot Award-winning Keeping Homes…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchBurr Ridge, NC, United StatesHQ recorded Nov 6, 2026501-1,000299 contacts →

Exact match

“Weil-McLain® is a leading North American designer and manufacturer of hydronic comfort heating systems for residential, commercial and institutional buildings since 1881.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchBremen, GermanyHQ recorded Nov 6, 20261,001-5,000292 contacts →

Exact match

“For 90 years, SAACKE has been the driving force for the progress within combustion technology.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchMorlaix, FranceHQ recorded Nov 6, 2026501-1,000282 contacts →

Exact match

“Sermeta is the world leading manufacturer of stainless steel heat exchanger for gas condensing boilers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchWalbridge, OH, United StatesHQ recorded Nov 6, 20261,001-5,000279 contacts →

Exact match

“Contractor for Life At GEM Inc, we’re experienced problem solvers with the insight, integrity and resources to see you through your toughest challenges.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchUnited StatesHQ recorded Nov 6, 202651-200269 contacts →

Exact match

“National is a full-service industrial contractor with 35+ years of experience delivering precision-driven boiler, mechanical, construction, and specialty services to industrial…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchOxnard, United StatesHQ recorded Nov 6, 2026501-1,000252 contacts →

Exact match

“For over 70 years, Raypak has been the world's leading manufacturer of copper finned boilers and heaters.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchMalatya, TürkiyeHQ recorded Nov 6, 2026501-1,000242 contacts →

Exact match

“Mimsan Grup; Yakma ve Enerji Sistemleri Üreten 41 Yıllık Bir Deneyime Sahip Endüstri Firmasıdır.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact 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
22Exact matchAtlanta, United StatesHQ recorded Nov 6, 2026201-500215 contacts →

Exact match

“Clyde Industries, a subsidiary of Kadant Inc, headquartered in Atlanta, Georgia, is a leading provider of boiler efficiency solutions for the most demanding applications in the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchHayward, CA, United StatesHQ recorded Nov 6, 2026201-500211 contacts →

Exact match

“R.F.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchCoevorden, NetherlandsHQ recorded Nov 6, 2026201-500210 contacts →

Exact match

“Intergas: an introduction.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchBassano Del Grappa, ItalyHQ recorded Nov 6, 2026501-1,000205 contacts →

Exact match

“Nata negli anni 1925 come produttore di prodotti smaltati, dagli anni 70 Baxi è entrata nel settore HVAC con apparecchi domestici per il riscaldamento e la climatizzazione.”

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

Showing 25 of 5,262 boiler companies worldwide

See the full list, filter by size, metro and specialty, and access 11,233 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Boiler companies worldwide at a glance

As of Nov 6, 2026
19.1%Verified-email coverage
11.2Average contacts per company
11-50Median size (employees)
1.3%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
2,318
11-50
1,639
51-200
719
201-500
170
501-1,000
88
1,001-5,000
45
5,001-10,000
12
10001+
7

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for boiler companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “boiler companies” 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. 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 11,233 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.

Boiler companies by location

21 lists · largest first

Every Boiler companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many boiler companies are there worldwide?

RevenueBase identified 5,262 company matches for boiler companies worldwide 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?

Spirax Sarco tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most boiler companies?

The United Kingdom leads with 1,133 companies, followed by the United States (573) and India (400). Every boiler companies list by country and city is linked on this page.

Which city has the most boiler companies?

London leads with 66 company records, followed by Pune (51) and Ahmedabad (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 11,233 professional contacts with verified work emails tracked across these 5,262 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.