Company lists · Data refreshed September 2026

Top 25 Industrial water heater installers based in the United States

Name: Industrial water heater installers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 2,748 companies tracked

RevenueBase identified 2,748 industrial water heater installers headquartered in the United States as of September 2026 and tracks 36,470 professional contacts across them, including 13,446 with verified work emails. New York is the largest hub.

This list covers industrial water heater installers headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

2,748Companies

36,470Contacts tracked

13,446Verified emails

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The 25 largest industrial water heater installers based in the United States

Ranked by team size

Top 25 of 2,748 industrial water heater installers based in the United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to industrial water heater installers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Acco Engineered Systems	Indirect evidence	Pasadena, CA, United StatesHQ checked Sep 17, 2026	5,001-10,000	2,415 contacts →
	Indirect evidence “Since 1934, owners and builders have selected ACCO Engineered Systems to design, install, and maintain more than mechanical projects.” Source: RevenueBase Database · checked Sep 17, 2026
2	Mckenney's, INC	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,077 contacts →
	Indirect evidence “McKenney’s is the Southeast’s most trusted name in facility construction, operation and maintenance.” Source: RevenueBase Database · checked Sep 17, 2026
3	Thermon	Strong evidence	Austin, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	901 contacts →
	Strong evidence “Industrial Process Heating Solutions Through its global network, Thermon provides safe, reliable and innovative mission critical industrial process heating solutions.” Source: RevenueBase Database · checked Sep 17, 2026
4	Bradford White	Strong evidence	Ambler, PA, United StatesHQ checked Sep 17, 2026	1,001-5,000	689 contacts →
	Strong evidence “Bradford White Corporation is an American-owned, full-line manufacturer of residential, commercial, and industrial products for water heating, space heating, combination heating…” Source: RevenueBase Database · checked Sep 17, 2026
5	Horizon Services, LLC	Partial evidence	Wilmington, DE, United StatesHQ checked Sep 17, 2026	501-1,000	448 contacts →
	Partial evidence “Horizon Services is the premier heating, air conditioning, plumbing, drain cleaning and sewer services company in Delaware (New Castle County & Kent County), Pennsylvania…” Source: RevenueBase Database · checked Sep 17, 2026
6	John W. Danforth Company	Indirect evidence	Tonawanda, NY, United StatesHQ checked Sep 17, 2026	501-1,000	415 contacts →
	Indirect evidence “We are powered by the best people in the industry.” Source: RevenueBase Database · checked Sep 17, 2026
7	United Mechanical	Partial evidence	San Jose, CA, United StatesHQ checked Sep 17, 2026	201-500	346 contacts →
	Partial evidence “United Mechanical specializes in HVAC and Plumbing systems design, construction, retrofit, repair, and 24/7 emergency service for commercial and industrial properties throughout…” Source: RevenueBase Database · checked Sep 17, 2026
8	Bassett Mechanical	Partial evidence	Kaukauna, WI, United StatesHQ checked Sep 17, 2026	201-500	298 contacts →
	Partial evidence “Bassett Mechanical provides complete design, engineering, fabrication, installation, and preventative maintenance service solutions for all our customer’s industrial…” Source: RevenueBase Database · checked Sep 17, 2026
9	Weil-Mclain	Partial evidence	Burr Ridge, IL, United StatesHQ checked Sep 17, 2026	501-1,000	279 contacts →
	Partial evidence “Weil-McLain® is a leading North American designer and manufacturer of hydronic comfort heating systems for residential, commercial and institutional buildings since 1881.” Source: RevenueBase Database · checked Sep 17, 2026
10	GEM Incorporated	Indirect evidence	Walbridge, OH, United StatesHQ checked Sep 17, 2026	1,001-5,000	270 contacts →
	Indirect evidence “Contractor for Life At GEM Inc, we’re experienced problem solvers with the insight, integrity and resources to see you through your toughest challenges.” Source: RevenueBase Database · checked Sep 17, 2026
11	The Arcticom Group	Partial evidence	Walnut Creek, CA, United StatesHQ checked Sep 17, 2026	1,001-5,000	259 contacts →
	Partial evidence “At The Arcticom Group (TAG), our family of best-in-market operating companies delivers the highest-quality service and customer experience in commercial and industrial HVACR.” Source: RevenueBase Database · checked Sep 17, 2026
12	Morris-Jenkins	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 17, 2026	501-1,000	225 contacts →
	Indirect evidence “Morris-Jenkins is like family!” Source: RevenueBase Database · checked Sep 17, 2026
13	Pueblo Mechanical & Controls	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 17, 2026	501-1,000	214 contacts →
	Indirect evidence “Pueblo was founded in Arizona to achieve sustained and profitable growth by providing services that consistently satisfy the needs and expectations of its customers.” Source: RevenueBase Database · checked Sep 17, 2026
14	Tweet Garot Mechanical, INC	Indirect evidence	De Pere, WI, United StatesHQ checked Sep 17, 2026	501-1,000	207 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
15	Cleaver-Brooks Sales And Service	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 17, 2026	201-500	193 contacts →
	Indirect evidence “Cleaver-Brooks Sales and Service, is one of the most innovative and fastest growing boiler services companies in the United States.” Source: RevenueBase Database · checked Sep 17, 2026
16	Haller Enterprises	Partial evidence	Lititz, PA, United StatesHQ checked Sep 17, 2026	201-500	191 contacts →
	Partial evidence “Since 1981, Haller Enterprises has proudly served central and eastern Pennsylvania as a leader in heating, cooling, plumbing, and electrical services.” Source: RevenueBase Database · checked Sep 17, 2026
17	R.F. Macdonald CO	Indirect evidence	Hayward, CA, United StatesHQ checked Sep 17, 2026	201-500	190 contacts →
	Indirect evidence “R.F.” Source: RevenueBase Database · checked Sep 17, 2026
18	Sack Company	Partial evidence	Statesboro, GA, United StatesHQ checked Sep 17, 2026	501-1,000	184 contacts →
	Partial evidence “With offices in Statesboro, GA, Savannah, GA, Atlanta, GA, Charlotte, NC, and Lexington, SC, The Sack Company is one of the largest industrial mechanical, electrical, plumbing…” Source: RevenueBase Database · checked Sep 17, 2026
19	Maxair Mechanical	Indirect evidence	Marietta, GA, United StatesHQ checked Sep 17, 2026	201-500	183 contacts →
	Indirect evidence “MAXAIR Mechanical, founded in 1988, is a people first company.” Source: RevenueBase Database · checked Sep 17, 2026
20	Rooter Hero Plumbing & AIR	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 17, 2026	201-500	179 contacts →
	Indirect evidence “https://linktr.ee/Rooter.Hero At Rooter Hero Plumbing, we pride ourselves on providing Competitive Pricing, Quality Work and Professional Service on every plumbing appointment.” Source: RevenueBase Database · checked Sep 17, 2026
21	Emcor Services Aircond	Indirect evidence	Smyrna, GA, United StatesHQ checked Sep 17, 2026	201-500	178 contacts →
	Indirect evidence “Backed by 80 years of experience, the more than 300 associates at EMCOR Services Aircond design and deliver comprehensive, timely, and cost effective HVAC and building system…” Source: RevenueBase Database · checked Sep 17, 2026
22	Fulton	Strong evidence	Pulaski, NY, United StatesHQ checked Sep 17, 2026	501-1,000	171 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
23	Marshalls INC	Indirect evidence	Lynnwood, WA, United StatesHQ checked Sep 17, 2026	n/a	168 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
24	AC Corporation	Partial evidence	Greensboro, NC, United StatesHQ checked Sep 17, 2026	201-500	167 contacts →
	Partial evidence “Since 1935, AC Corporation has provided quality systems for the industrial and commercial markets.” Source: RevenueBase Database · checked Sep 17, 2026
25	Victory Energy Operations, LLC	Partial evidence	Collinsville, OK, United StatesHQ checked Sep 17, 2026	201-500	162 contacts →
	Partial evidence “Victory Energy Operations, LLC is a leading, single-source (concept to completion) supplier of custom-engineered industrial boiler systems and advanced technologies worldwide…” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: industrial water heater installers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names industrial water heater installers.
Partial evidence: Its own public description names part of industrial water heater installers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial water heater installers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 2,748 industrial water heater installers based in the United States

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Industrial water heater installers based in the United States at a glance

As of Sep 17, 2026

36.9%Verified-email coverage

13.3Average contacts per company

11-50Median size (employees)

1.2%Largest-city concentration · New York

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

1,186

11-50

1,040

51-200

398

201-500

501-1,000

1,001-5,000

5,001-10,000

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 2,748 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among industrial water heater installers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “industrial water heater installers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names industrial water heater installers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among industrial water heater installers, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 13,446 across the full list. 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 17, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Industrial water heater installers by metro

Industrial water heater installers in New York32
Industrial water heater installers in Houston29

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names industrial water heater installers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many industrial water heater installers are there based in the United States?

RevenueBase identified 2,748 industrial water heater installers headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Acco Engineered Systems, headquartered in Pasadena, tops this list with the largest team on record.

Which city has the most industrial water heater installers?

New York leads with 32 headquartered companies, followed by Houston (29) and San Antonio (19).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 13,446 verified decision-maker contacts tracked across these 2,748 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 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 Smart Search, 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.