Company lists · Data refreshed September 2026

Top 25 Oil heating equipment manufacturers based in the United States

Name: Oil heating equipment manufacturers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 189 companies tracked

RevenueBase identified 189 company matches for oil heating equipment manufacturers associated with the United States as of September 2026 and tracks 5,595 professional contacts across them, including 2,161 with verified work emails. Lancaster is the largest hub.

This list covers company matches for oil heating equipment 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 September 30, 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 Sep 30, 2026 How this list was built

189Companies

5,595Contacts tracked

2,161Verified emails

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The 25 largest oil heating equipment manufacturers based in the United States

Ranked by team size

Top 25 of 189 company matches for oil heating equipment manufacturers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 30, 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	Bradford White	Exact match	Ambler, PA, United StatesHQ recorded Sep 30, 2026	1,001-5,000	689 contacts →
	Exact match “Bradford White Corporation is an American-owned, full-line manufacturer of residential, commercial, and industrial products for water heating, space heating, combination heating…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
2	Cleaver-Brooks	Exact match	Thomasville, GA, United StatesHQ recorded Sep 30, 2026	1,001-5,000	631 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 · Sep 30, 2026 · View company records in RevenueBase
3	Weil-Mclain	Exact match	Burr Ridge, IL, United StatesHQ recorded Sep 30, 2026	501-1,000	279 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 · Sep 30, 2026 · View company records in RevenueBase
4	Raypak	Exact match	Oxnard, United StatesHQ recorded Sep 30, 2026	501-1,000	242 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 · Sep 30, 2026 · View company records in RevenueBase
5	Fulton	Exact match	Pulaski, NY, United StatesHQ recorded Sep 30, 2026	501-1,000	171 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 · Sep 30, 2026 · View company records in RevenueBase
6	Laars Heating Systems	Exact match	Rochester, NH, United StatesHQ recorded Sep 30, 2026	201-500	126 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 · Sep 30, 2026 · View company records in RevenueBase
7	ECR International	Exact match	Utica, United StatesHQ recorded Sep 30, 2026	201-500	126 contacts →
	Exact match “ECR International, Inc.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
8	Preferred Utilities Manufacturing Corporation	Exact match	Danbury, CT, United StatesHQ recorded Sep 30, 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 · Sep 30, 2026 · View company records in RevenueBase
9	Aerco International, INC	Exact match	Blauvelt, NY, United StatesHQ recorded Sep 30, 2026	51-200	104 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
10	Superior Boiler	Exact match	Hutchinson, KS, United StatesHQ recorded Sep 30, 2026	51-200	81 contacts →
	Exact match “Superior Boiler provides engineered energy solutions and is a leader in clean air emissions technology.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
11	HTP Comfort Solutions	Exact match	New Bedford, MA, United StatesHQ recorded Sep 30, 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 · Sep 30, 2026 · View company records in RevenueBase
12	Sigma Thermal, INC	Exact match	Marietta, GA, United StatesHQ recorded Sep 30, 2026	51-200	75 contacts →
	Exact match “Sigma Thermal designs, engineers, supplies, and services process heating systems for industry.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
13	Hurst Boiler & Welding Company, INC	Exact match	Coolidge, GA, United StatesHQ recorded Sep 30, 2026	201-500	73 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
14	King Electrical Mfg. CO	Exact match	Seattle, WA, United StatesHQ recorded Sep 30, 2026	51-200	72 contacts →
	Exact match “Why King?” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
15	United States Stove Company	Exact match	South Pittsburg, TN, United StatesHQ recorded Sep 30, 2026	51-200	70 contacts →
	Exact match “Since the company began in 1869, U.S.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
16	Warmboard INC	Exact match	Scotts Valley, CA, United StatesHQ recorded Sep 30, 2026	51-200	63 contacts →
	Exact match “Warmboard, Inc.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
17	OGI Process Equipment	Exact match	Sand Springs, OK, United StatesHQ recorded Sep 30, 2026	51-200	56 contacts →
	Exact match “OGI (Oil, Gas, and Industrial) Process Equipment designs, manufactures, sells, and services TERI brand indirect fired water bath heaters and QuikWater® brand direct fired water…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
18	Zehnder Rittling	Exact match	Buffalo, NY, United StatesHQ recorded Sep 30, 2026	51-200	47 contacts →
	Exact match “Industry Innovation & Customer Satisfaction For decades, customers have looked to Rittling for the industry's most advanced, reliable and efficient heating designs.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
19	Triangle Tube	Exact match	West Deptford Township, NJ, United StatesHQ recorded Sep 30, 2026	11-50	47 contacts →
	Exact match “Triangle Tube heating and hot water products have created comfort to families for over 60 years.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
20	Rock Energy Systems LLC	Exact match	Janesville, WI, United StatesHQ recorded Sep 30, 2026	51-200	42 contacts →
	Exact match “Rock Energy Systems, LLC holds three leading brands of space heating products that include portable radiant heaters, waste oil furnaces, and boilers.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
21	BAY City Boiler	Exact match	Hayward, CA, United StatesHQ recorded Sep 30, 2026	11-50	41 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 · Sep 30, 2026 · View company records in RevenueBase
22	Industrial Combustion	Exact match	Monroe, WI, United StatesHQ recorded Sep 30, 2026	51-200	40 contacts →
	Exact match “Industrial Combustion is a leading manufacturer of burners designed for commercial, industrial, and institutional applications.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
23	Furnace Improvements Services	Exact match	Sugar Land, TX, United StatesHQ recorded Sep 30, 2026	11-50	37 contacts →
	Exact match “FURNACE IMPROVEMENTS SERVICES (FIS) has been actively providing value-added solutions for Fired Heaters, Boilers, and Waste Heat Recovery Units to end-users around the world for…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
24	Power Equipment Company Of Memphis	Exact match	Memphis, TN, United StatesHQ recorded Sep 30, 2026	11-50	32 contacts →
	Exact match “Power Equipment Company (Power Equipment of Memphis) specializes in energy systems and heat generating products, providing the knowledge, products, services and supplies necessary…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
25	Wayne Combustion Systems	Exact match	Fort Wayne, IN, United StatesHQ recorded Sep 30, 2026	51-200	30 contacts →
	Exact match “Wayne Combustion Systems is a manufacturer of power gas and oil fired burners for commercial and residential applications requiring high quality and reliable power burners.” Recorded in the RevenueBase company graph · Sep 30, 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 “oil heating equipment 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 189 oil heating equipment manufacturers based in the United States

See the full list, filter by size, metro and specialty, and access 2,161 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Oil heating equipment manufacturers based in the United States at a glance

As of Sep 30, 2026

38.6%Verified-email coverage

29.6Average contacts per company

11-50Median size (employees)

2.1%Largest-city concentration · Lancaster

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

11-50

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 189 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 “oil heating equipment 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 2,161 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 September 30, 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 “oil heating equipment manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many oil heating equipment manufacturers are there based in the United States?

RevenueBase identified 189 company matches for oil heating equipment manufacturers associated with the United States as of September 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?

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

Which city has the most oil heating equipment manufacturers?

Lancaster leads with 4 company records, followed by Janesville (3) and Tulsa (3).

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 2,161 professional contacts with verified work emails tracked across these 189 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 September 30, 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.