Company lists · Data refreshed October 2026

Top 25 Commercial oil boiler manufacturers based in the United States

Name: Commercial oil boiler manufacturers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 10, 2026 323 companies tracked

RevenueBase identified 323 company matches for commercial oil boiler manufacturers associated with the United States as of October 2026 and tracks 6,945 professional contacts across them, including 2,728 with verified work emails. New York is the largest hub.

This list covers company matches for commercial oil boiler manufacturers 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 10, 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 Oct 10, 2026 How this list was built

323Companies

6,945Contacts tracked

2,728Verified emails

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The 25 largest commercial oil boiler manufacturers based in the United States

Ranked by team size

Top 25 of 323 company matches for commercial oil boiler manufacturers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 10, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Cleaver-Brooks	Exact match	Thomasville, GA, United StatesHQ recorded Oct 10, 2026	1,001-5,000	665 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 · Oct 10, 2026 · View company records in RevenueBase
2	Weil-Mclain	Exact match	Burr Ridge, IL, United StatesHQ recorded Oct 10, 2026	501-1,000	294 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 · Oct 10, 2026 · View company records in RevenueBase
3	Raypak	Exact match	Oxnard, United StatesHQ recorded Oct 10, 2026	501-1,000	245 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 · Oct 10, 2026 · View company records in RevenueBase
4	Cleaver-Brooks Sales And Service	Exact match	Dallas, TX, United StatesHQ recorded Oct 10, 2026	201-500	198 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 · Oct 10, 2026 · View company records in RevenueBase
5	R.F. Macdonald CO	Exact match	Hayward, CA, United StatesHQ recorded Oct 10, 2026	201-500	193 contacts →
	Exact match “R.F.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
6	Fulton	Exact match	Pulaski, NY, United StatesHQ recorded Oct 10, 2026	501-1,000	168 contacts →
	Exact match “Fulton specializes in custom engineered industrial and commercial heating systems featuring steam boilers, hot water and hydronic boilers, thermal fluid heaters, and a full range…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
7	Victory Energy Operations, LLC	Exact match	Collinsville, OK, United StatesHQ recorded Oct 10, 2026	201-500	167 contacts →
	Exact match “Victory Energy Operations, LLC is a leading, single-source (concept to completion) supplier of custom-engineered industrial boiler systems and advanced technologies worldwide…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
8	WARE	Exact match	Louisville, KY, United StatesHQ recorded Oct 10, 2026	51-200	149 contacts →
	Exact match “WARE is a commercial and industrial, boiler rental and service company.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
9	Laars Heating Systems	Exact match	Rochester, NH, United StatesHQ recorded Oct 10, 2026	201-500	132 contacts →
	Exact match “Founded in 1948, LAARS serves a diverse base of customers located in many countries across the globe.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
10	ECR International	Exact match	Utica, United StatesHQ recorded Oct 10, 2026	201-500	130 contacts →
	Exact match “ECR International, Inc.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
11	Tate Engineering Systems, INC	Exact match	Baltimore, MD, United StatesHQ recorded Oct 10, 2026	51-200	117 contacts →
	Exact match “For over 102 years, Tate Engineering has been a trusted provider of mechanical and industrial solutions across the Mid-Atlantic.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
12	Aerco International, INC	Exact match	Blauvelt, NY, United StatesHQ recorded Oct 10, 2026	51-200	115 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
13	Preferred Utilities Manufacturing Corporation	Exact match	Danbury, CT, United StatesHQ recorded Oct 10, 2026	51-200	104 contacts →
	Exact match “Preferred Utilities Manufacturing Corporation is an engineering-based manufacturer of products for commercial, institutional, industrial and nuclear power facilities.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
14	Helfrich Brothers Boiler Works	Exact match	Lawrence, MA, United StatesHQ recorded Oct 10, 2026	51-200	103 contacts →
	Exact match “Our innovative approach, highly-trained team, and square foot facility gives Helfrich Brothers the ability to offer custom turn-key services for our clients.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
15	California Boiler	Exact match	Santa Ana, CA, United StatesHQ recorded Oct 10, 2026	51-200	100 contacts →
	Exact match “California Boiler is a 100% employee-owned company specializing in complete boiler service, sales, parts and rentals.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
16	RMR Mechanical LLC And Bodman Services LLC	Exact match	Cumming, GA, United StatesHQ recorded Oct 10, 2026	201-500	96 contacts →
	Exact match “RMR Mechanical is an industrial boiler and mechanical contractor.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
17	C&c Boiler Sales & Service, INC	Exact match	Charlotte, NC, United StatesHQ recorded Oct 10, 2026	51-200	93 contacts →
	Exact match “Founded in 1977, C&C Boiler Sales & Service, Inc.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
18	Delval Equipment	Exact match	West Norriton, PA, United StatesHQ recorded Oct 10, 2026	51-200	92 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 · Oct 10, 2026 · View company records in RevenueBase
19	Superior Boiler	Exact match	Hutchinson, KS, United StatesHQ recorded Oct 10, 2026	51-200	86 contacts →
	Exact match “Superior Boiler provides engineered energy solutions and is a leader in clean air emissions technology.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
20	Sigma Thermal, INC	Exact match	Marietta, GA, United StatesHQ recorded Oct 10, 2026	51-200	76 contacts →
	Exact match “Sigma Thermal designs, engineers, supplies, and services process heating systems for industry.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
21	HTP Comfort Solutions	Exact match	New Bedford, MA, United StatesHQ recorded Oct 10, 2026	51-200	76 contacts →
	Exact match “Established in 1974, HTP Comfort Solutions LLC is a full-fledged manufacturer on the cutting edge of energy efficient space and water heating technology.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
22	Hurst Boiler & Welding Company, INC	Exact match	Coolidge, GA, United StatesHQ recorded Oct 10, 2026	201-500	71 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
23	Pbbs Equipment Corporation	Exact match	Menomonee Falls, WI, United StatesHQ recorded Oct 10, 2026	51-200	66 contacts →
	Exact match “PBBS has been providing customer-oriented service since 1955.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
24	Willbanks INC	Exact match	Missouri City, TX, United StatesHQ recorded Oct 10, 2026	51-200	65 contacts →
	Exact match “Since 1977, Willbanks has provided advanced solutions and support for thousands of commercial heating systems and equipment.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
25	Rentech Boiler Systems, INC	Exact match	Abilene, TX, United StatesHQ recorded Oct 10, 2026	201-500	64 contacts →
	Exact match “RENTECH was founded in 1996 to build boilers for people who know and care.” Recorded in the RevenueBase company graph · Oct 10, 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 “commercial oil boiler manufacturers”. 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 323 commercial oil boiler manufacturers based in the United States

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Commercial oil boiler manufacturers based in the United States at a glance

As of Oct 10, 2026

39.3%Verified-email coverage

21.5Average contacts per company

11-50Median size (employees)

1.9%Largest-city concentration · New York

Oct 10, 2026Page data refreshed

Companies by employee count

1-10

122

11-50

125

51-200

201-500

501-1,000

1,001-5,000

10001+

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 323 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 “commercial oil boiler manufacturers” 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 2,728 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 10, 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 “commercial oil boiler manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many commercial oil boiler manufacturers are there based in the United States?

RevenueBase identified 323 company matches for commercial oil boiler manufacturers 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?

Cleaver-Brooks tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most commercial oil boiler manufacturers?

New York leads with 6 company records, followed by Chicago (5) and Houston (5).

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 2,728 professional contacts with verified work emails tracked across these 323 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 10, 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.