Company lists · Data refreshed September 2026

Top 25 Commercial heating system installers based in the United States

Name: Commercial heating system 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 19, 2026 4,737 companies tracked

RevenueBase identified 4,737 company matches for commercial heating system installers associated with the United States as of September 2026 and tracks 32,806 professional contacts across them, including 9,164 with verified work emails. Houston is the largest hub.

This list covers company matches for commercial heating system installers 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 19, 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 19, 2026 How this list was built

4,737Companies

32,806Contacts tracked

9,164Verified emails

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The 25 largest commercial heating system installers based in the United States

Ranked by team size

Top 25 of 4,737 company matches for commercial heating system installers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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	United Mechanical	Exact match	San Jose, CA, United StatesHQ recorded Sep 19, 2026	201-500	346 contacts →
	Exact match “United Mechanical specializes in HVAC and Plumbing systems design, construction, retrofit, repair, and 24/7 emergency service for commercial and industrial properties throughout…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2	Weil-Mclain	Exact match	Burr Ridge, IL, United StatesHQ recorded Sep 19, 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 19, 2026 · View company records in RevenueBase
3	The Arcticom Group	Exact match	Walnut Creek, CA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	259 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4	Morris-Jenkins	Exact match	Charlotte, NC, United StatesHQ recorded Sep 19, 2026	501-1,000	225 contacts →
	Exact match “Morris-Jenkins is like family!” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5	Airtron Heating & AIR Conditioning	Exact match	Columbus, OH, United StatesHQ recorded Sep 19, 2026	1,001-5,000	214 contacts →
	Exact match “Airtron has developed itself into one of the leading heating, ventilation, and air conditioning (HVAC) providers.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6	Energy Air, INC	Exact match	Orlando, FL, United StatesHQ recorded Sep 19, 2026	201-500	213 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7	Gardiner	Exact match	Solon, OH, United StatesHQ recorded Sep 19, 2026	201-500	205 contacts →
	Exact match “At Gardiner, we've gotten used to clients being shocked by everything we can do to improve a building.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8	Haller Enterprises	Exact match	Lititz, PA, United StatesHQ recorded Sep 19, 2026	201-500	191 contacts →
	Exact match “Since 1981, Haller Enterprises has proudly served central and eastern Pennsylvania as a leader in heating, cooling, plumbing, and electrical services.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9	R.F. Macdonald CO	Exact match	Hayward, CA, United StatesHQ recorded Sep 19, 2026	201-500	190 contacts →
	Exact match “R.F.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	Maxair Mechanical	Exact match	Marietta, GA, United StatesHQ recorded Sep 19, 2026	201-500	183 contacts →
	Exact match “MAXAIR Mechanical, founded in 1988, is a people first company.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11	Emcor Services Aircond	Exact match	Smyrna, GA, United StatesHQ recorded Sep 19, 2026	201-500	178 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12	Fulton	Exact match	Pulaski, NY, United StatesHQ recorded Sep 19, 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 19, 2026 · View company records in RevenueBase
13	American Mechanical Services	Exact match	Laurel, MD, United StatesHQ recorded Sep 19, 2026	501-1,000	169 contacts →
	Exact match “AMS is one of the nation’s leading providers of commercial heating, ventilation, and air conditioning (HVAC) maintenance, repair, replacement, and new equipment installation.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	Marshalls INC	Exact match	Lynnwood, WA, United StatesHQ recorded Sep 19, 2026	n/a	168 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15	ONE Hour Heating & AIR Conditioning	Exact match	Myrtle Beach, SC, United StatesHQ recorded Sep 19, 2026	51-200	167 contacts →
	Exact match “We believe in… excellence and heart.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16	Newcomb And Company	Exact match	Raleigh, NC, United StatesHQ recorded Sep 19, 2026	201-500	159 contacts →
	Exact match “Founded in 1954, Newcomb and Company is a full-service mechanical contractor providing customers in the commercial, residential, and industrial sectors with innovative…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17	Hoffmann Brothers	Exact match	St. Louis, MO, United StatesHQ recorded Sep 19, 2026	501-1,000	153 contacts →
	Exact match “About Hoffmann Brothers We are on a mission to Improve Life in Every Home.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18	CCI Mechanical, INC	Exact match	Salt Lake City, UT, United StatesHQ recorded Sep 19, 2026	201-500	133 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19	WARE	Exact match	Louisville, KY, United StatesHQ recorded Sep 19, 2026	51-200	131 contacts →
	Exact match “WARE is a commercial and industrial, boiler rental and service company.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20	The K Company, INC	Exact match	Akron, OH, United StatesHQ recorded Sep 19, 2026	201-500	120 contacts →
	Exact match “Since 1972, The K Company has been setting the standard in commercial, residential and industrial heating, air conditioning, ventilation and refrigeration systems.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21	Custom AIR Products & Services, INC	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	201-500	114 contacts →
	Exact match “Custom Air Products & Services, Inc.(CAPS), an AirX Climate Solutions company, is a full-service HVAC company that specializes in the design, construction, installation…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22	Powers Building Hvac, Controls, And Service	Exact match	North Little Rock, AR, United StatesHQ recorded Sep 19, 2026	201-500	113 contacts →
	Exact match “Our goal at Powers is to make your buildings productive, comfortable, and efficient to operate.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23	Lawyer Mechanical Services	Exact match	Las Vegas, NV, United StatesHQ recorded Sep 19, 2026	51-200	110 contacts →
	Exact match “Lawyer Mechanical Services (LMS) creates and maintains comfort.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24	ACIS	Exact match	Mckinney, TX, United StatesHQ recorded Sep 19, 2026	201-500	108 contacts →
	Exact match “Air-Conditioning Innovative Solutions serves Dallas, Fort Worth, Houston and Austin with commercial HVAC services.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25	Alpha Energy Solutions	Exact match	Louisville, KY, United StatesHQ recorded Sep 19, 2026	201-500	104 contacts →
	Exact match “Alpha Energy Solutions is a commercial and industrial mechanical service provider specializing in HVAC, indoor energy solutions, building automation, chillers, boilers…” Recorded in the RevenueBase company graph · Sep 19, 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 heating system installers”. 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 4,737 commercial heating system installers based in the United States

See the full list, filter by size, metro and specialty, and access 9,164 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Commercial heating system installers based in the United States at a glance

As of Sep 19, 2026

27.9%Verified-email coverage

6.9Average contacts per company

11-50Median size (employees)

1.2%Largest-city concentration · Houston

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

2,307

11-50

1,838

51-200

450

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 4,737 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 heating system installers” 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 9,164 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 19, 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.

Commercial heating system installers by metro

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

How many commercial heating system installers are there based in the United States?

RevenueBase identified 4,737 company matches for commercial heating system installers 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?

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

Which city has the most commercial heating system installers?

Houston leads with 57 company records, followed by New York (55) and San Antonio (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 9,164 professional contacts with verified work emails tracked across these 4,737 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 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 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.