Company lists · Data refreshed September 2026

Top 25 Commercial water heater installation companies based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 3,209 companies tracked

RevenueBase identified 3,209 commercial water heater installation companies headquartered in the United States as of September 2026 and tracks 25,211 professional contacts across them, including 6,934 with verified work emails. New York is the largest hub.

This list covers commercial water heater installation companies 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 19, 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 19, 2026 86% judged on-target in blind review

3,209Companies

25,211Contacts tracked

6,934Verified emails

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The 25 largest commercial water heater installation companies based in the United States

Ranked by team size

Top 25 of 3,209 commercial water heater installation companies based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to commercial water heater installation companies: 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	Bradford White	Strong evidence	Ambler, PA, United StatesHQ checked Sep 19, 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 19, 2026
2	Horizon Services, LLC	Partial evidence	Wilmington, DE, United StatesHQ checked Sep 19, 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 19, 2026
3	United Mechanical	Partial evidence	San Jose, CA, United StatesHQ checked Sep 19, 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 19, 2026
4	Morris-Jenkins	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 19, 2026	501-1,000	225 contacts →
	Indirect evidence “Morris-Jenkins is like family!” Source: RevenueBase Database · checked Sep 19, 2026
5	Airtron Heating & AIR Conditioning	Partial evidence	Columbus, OH, United StatesHQ checked Sep 19, 2026	1,001-5,000	214 contacts →
	Partial evidence “Airtron has developed itself into one of the leading heating, ventilation, and air conditioning (HVAC) providers.” Source: RevenueBase Database · checked Sep 19, 2026
6	Cleaver-Brooks Sales And Service	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 19, 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 19, 2026
7	Haller Enterprises	Partial evidence	Lititz, PA, United StatesHQ checked Sep 19, 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 19, 2026
8	R.F. Macdonald CO	Indirect evidence	Hayward, CA, United StatesHQ checked Sep 19, 2026	201-500	190 contacts →
	Indirect evidence “R.F.” Source: RevenueBase Database · checked Sep 19, 2026
9	Maxair Mechanical	Indirect evidence	Marietta, GA, United StatesHQ checked Sep 19, 2026	201-500	183 contacts →
	Indirect evidence “MAXAIR Mechanical, founded in 1988, is a people first company.” Source: RevenueBase Database · checked Sep 19, 2026
10	Rooter Hero Plumbing & AIR	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 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 19, 2026
11	LEN The Plumber Heating & AIR	Partial evidence	Baltimore, MD, United StatesHQ checked Sep 19, 2026	201-500	175 contacts →
	Partial evidence “Len The Plumber Heating & Air is a leading home services provider delivering trusted plumbing, heating, cooling, and air quality solutions across the Mid-Atlantic region.” Source: RevenueBase Database · checked Sep 19, 2026
12	American Mechanical Services	Strong evidence	Laurel, MD, United StatesHQ checked Sep 19, 2026	501-1,000	169 contacts →
	Strong evidence “AMS is one of the nation’s leading providers of commercial heating, ventilation, and air conditioning (HVAC) maintenance, repair, replacement, and new equipment installation.” Source: RevenueBase Database · checked Sep 19, 2026
13	Marshalls INC	Indirect evidence	Lynnwood, WA, United StatesHQ checked Sep 19, 2026	n/a	168 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
14	Hoffmann Brothers	Indirect evidence	St Louis, MO, United StatesHQ checked Sep 19, 2026	501-1,000	153 contacts →
	Indirect evidence “About Hoffmann Brothers We are on a mission to Improve Life in Every Home.” Source: RevenueBase Database · checked Sep 19, 2026
15	WARE	Partial evidence	Louisville, KY, United StatesHQ checked Sep 19, 2026	51-200	131 contacts →
	Partial evidence “WARE is a commercial and industrial, boiler rental and service company.” Source: RevenueBase Database · checked Sep 19, 2026
16	Paschal Air, Plumbing & Electric	Partial evidence	Springdale, AR, United StatesHQ checked Sep 19, 2026	201-500	128 contacts →
	Partial evidence “For more than 50 years, Paschal has provided professional Heating & Air, Plumbing & Electrical services to homeowners & businesses in Arkansas, Texas, Oklahoma, Kansas & Missouri.” Source: RevenueBase Database · checked Sep 19, 2026
17	Southern Home Services	Partial evidence	Maitland, FL, United StatesHQ checked Sep 19, 2026	1,001-5,000	119 contacts →
	Partial evidence “Southern Home Services provides Air Conditioning, Heating, Electrical, and Plumbing repair and maintenance services throughout Florida, Georgia, South Carolina, North Carolina…” Source: RevenueBase Database · checked Sep 19, 2026
18	AIR Control Systems	Partial evidence	Ontario, CA, United StatesHQ checked Sep 19, 2026	201-500	117 contacts →
	Partial evidence “Your Comfort Is Our Passion™ For decades, there has been one name in commercial HVAC synonymous with quality, expertise, and the highest levels of customer service: Air Control…” Source: RevenueBase Database · checked Sep 19, 2026
19	Lawyer Mechanical Services	Indirect evidence	Las Vegas, NV, United StatesHQ checked Sep 19, 2026	51-200	110 contacts →
	Indirect evidence “Lawyer Mechanical Services (LMS) creates and maintains comfort.” Source: RevenueBase Database · checked Sep 19, 2026
20	DRF Water Heating Solutions	Strong evidence	Plainfield, IL, United StatesHQ checked Sep 19, 2026	51-200	109 contacts →
	Strong evidence “DRF Water Heating Solutions mission is to help as many people as we can.” Source: RevenueBase Database · checked Sep 19, 2026
21	ACIS	Partial evidence	Mckinney, TX, United StatesHQ checked Sep 19, 2026	201-500	108 contacts →
	Partial evidence “Air-Conditioning Innovative Solutions serves Dallas, Fort Worth, Houston and Austin with commercial HVAC services.” Source: RevenueBase Database · checked Sep 19, 2026
22	Advanced Home Services	Partial evidence	Rigby, ID, United StatesHQ checked Sep 19, 2026	11-50	95 contacts →
	Partial evidence “At Advanced Home Services our goal is to provide you with Advanced plumbing and heating services that will make your life simple, convenient and comfortable.” Source: RevenueBase Database · checked Sep 19, 2026
23	Interstate AC	Partial evidence	Nashville, TN, United StatesHQ checked Sep 19, 2026	201-500	92 contacts →
	Partial evidence “Interstate AC is a trusted partner for commercial and industrial HVAC and plumbing services across Middle Tennessee.” Source: RevenueBase Database · checked Sep 19, 2026
24	IT Landes	Partial evidence	Harleysville, PA, United StatesHQ checked Sep 19, 2026	51-200	92 contacts →
	Partial evidence “IT Landes offers a wide range of commercial and industrial mechanical services, including maintenance, on-demand service, and equipment repair and replacement.” Source: RevenueBase Database · checked Sep 19, 2026
25	James River AIR Conditioning Company	Indirect evidence	Richmond, VA, United StatesHQ checked Sep 19, 2026	51-200	91 contacts →
	Indirect evidence “James River Air Conditioning, Inc.” Source: RevenueBase Database · checked Sep 19, 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: commercial water heater installation companies. 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 commercial water heater installation companies.
Partial evidence: Its own public description names part of commercial water heater installation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name commercial water heater installation companies. 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 3,209 commercial water heater installation companies based in the United States

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Commercial water heater installation companies based in the United States at a glance

As of Sep 19, 2026

27.5%Verified-email coverage

7.9Average contacts per company

11-50Median size (employees)

1.3%Largest-city concentration · New York

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

1,557

11-50

1,179

51-200

355

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 3,209 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 commercial water heater installation companies, 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 “commercial water heater installation companies”. 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 commercial water heater installation companies), 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 commercial water heater installation companies, 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, 6,934 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 19, 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.

Commercial water heater installation companies by metro

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 commercial water heater installation companies, 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 commercial water heater installation companies are there based in the United States?

RevenueBase identified 3,209 commercial water heater installation companies 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?

Bradford White, headquartered in Ambler, tops this list with the largest team on record.

Which city has the most commercial water heater installation companies?

New York leads with 41 headquartered companies, followed by Houston (28) and San Antonio (28).

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 6,934 verified decision-maker contacts tracked across these 3,209 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 19, 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.