Company lists · Data refreshed October 2026

Top 25 Heating system installation contractors based in the United States

Name: Heating system installation contractors based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 14, 2026 8,177 companies tracked

RevenueBase identified 8,177 company matches for heating system installation contractors associated with the United States as of October 2026 and tracks 65,805 professional contacts across them, including 19,452 with verified work emails. Houston is the largest hub.

This list covers company matches for heating system installation contractors 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 14, 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 14, 2026 How this list was built

8,177Companies

65,805Contacts tracked

19,452Verified emails

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The 25 largest heating system installation contractors based in the United States

Ranked by team size

Top 25 of 8,177 company matches for heating system installation contractors based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 14, 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	Mckenney's, INC	Exact match	Atlanta, GA, United StatesHQ recorded Oct 14, 2026	1,001-5,000	1,088 contacts →
	Exact match “McKenney’s is the Southeast’s most trusted name in facility construction, operation and maintenance.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
2	Cmta, INC	Exact match	Louisville, KY, United StatesHQ recorded Oct 14, 2026	501-1,000	1,016 contacts →
	Exact match “CMTA is part of Legence, a Nasdaq Listed company.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
3	ONE Hour Heating & AIR Conditioning	Exact match	Phoenix, AZ, United StatesHQ recorded Oct 14, 2026	1,001-5,000	556 contacts →
	Exact match “When homeowners want a reliable heater or air conditioning system that they don’t have to think about, they call One Hour Heating & Air Conditioning.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
4	Hoffman & Hoffman, INC	Exact match	Greensboro, NC, United StatesHQ recorded Oct 14, 2026	1,001-5,000	458 contacts →
	Exact match “Since 1947, Hoffman & Hoffman, Inc.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
5	Horizon Services, LLC	Exact match	Wilmington, DE, United StatesHQ recorded Oct 14, 2026	501-1,000	458 contacts →
	Exact match “Horizon Services is the premier heating, air conditioning, plumbing, drain cleaning and sewer services company in Delaware (New Castle County & Kent County), Pennsylvania…” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
6	John W. Danforth Company	Exact match	Tonawanda, NY, United StatesHQ recorded Oct 14, 2026	501-1,000	410 contacts →
	Exact match “We are powered by the best people in the industry.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
7	AIR Systems, INC	Exact match	San Jose, CA, United StatesHQ recorded Oct 14, 2026	201-500	359 contacts →
	Exact match “Whether building quality work environments, valuable relationships or community ties, Air Systems never cuts corners.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
8	Brady Services	Exact match	Greensboro, NC, United StatesHQ recorded Oct 14, 2026	501-1,000	355 contacts →
	Exact match “Since 1962, Brady has been committed to delivering innovative, sustainable building solutions that drive long-term success for our customers.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
9	United Mechanical	Exact match	San Jose, CA, United StatesHQ recorded Oct 14, 2026	201-500	349 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 · Oct 14, 2026 · View company records in RevenueBase
10	Boland	Exact match	Gaithersburg, MD, United StatesHQ recorded Oct 14, 2026	201-500	329 contacts →
	Exact match “Boland is the leading commercial HVAC systems, services, and building energy solutions provider in the DC metro area.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
11	Goettl AIR Conditioning & Plumbing	Exact match	Las Vegas, NV, United StatesHQ recorded Oct 14, 2026	501-1,000	324 contacts →
	Exact match “At Goettl, our mission is to "Goettlize the Nation" by setting the industry standard in HVAC and plumbing services.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
12	Weil-Mclain	Exact match	Burr Ridge, IL, United StatesHQ recorded Oct 14, 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 14, 2026 · View company records in RevenueBase
13	GEM Incorporated	Exact match	Walbridge, OH, United StatesHQ recorded Oct 14, 2026	1,001-5,000	277 contacts →
	Exact match “Contractor for Life At GEM Inc, we’re experienced problem solvers with the insight, integrity and resources to see you through your toughest challenges.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
14	Morris-Jenkins	Exact match	Charlotte, NC, United StatesHQ recorded Oct 14, 2026	501-1,000	248 contacts →
	Exact match “Morris-Jenkins is like family!” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
15	Airtron Heating & AIR Conditioning	Exact match	Columbus, OH, United StatesHQ recorded Oct 14, 2026	1,001-5,000	238 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 · Oct 14, 2026 · View company records in RevenueBase
16	Reliable Heating & AIR	Exact match	Kennesaw, GA, United StatesHQ recorded Oct 14, 2026	201-500	236 contacts →
	Exact match “Since 1978, Reliable Heating & Air has been serving all of Metro Atlanta's communities offering heating, cooling, plumbing and electrical services, indoor air quality, duct…” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
17	Trane Midwest	Exact match	Fenton, MO, United StatesHQ recorded Oct 14, 2026	201-500	226 contacts →
	Exact match “Trane® is a world leader in air conditioning systems, services and solutions.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
18	Energy Air, INC	Exact match	Orlando, FL, United StatesHQ recorded Oct 14, 2026	201-500	219 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
19	Gardiner	Exact match	Solon, OH, United StatesHQ recorded Oct 14, 2026	201-500	214 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 · Oct 14, 2026 · View company records in RevenueBase
20	Tweet Garot Mechanical, INC	Exact match	De Pere, WI, United StatesHQ recorded Oct 14, 2026	501-1,000	211 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
21	Pueblo Mechanical & Controls	Exact match	Phoenix, AZ, United StatesHQ recorded Oct 14, 2026	501-1,000	210 contacts →
	Exact match “Pueblo was founded in Arizona to achieve sustained and profitable growth by providing services that consistently satisfy the needs and expectations of its customers.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
22	Star Service INC	Exact match	Baton Rouge, LA, United StatesHQ recorded Oct 14, 2026	201-500	206 contacts →
	Exact match “Our commitment to the commercial HVAC industry has remained unchanged since we began in 1952.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
23	Haynes Mechanical Systems	Exact match	Greenwood Village, CO, United StatesHQ recorded Oct 14, 2026	201-500	203 contacts →
	Exact match “Haynes Mechanical Systems has been keeping commercial buildings running strong since 1968.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
24	MLN Company	Exact match	Stafford, TX, United StatesHQ recorded Oct 14, 2026	501-1,000	203 contacts →
	Exact match “MLN has provided the best systems and services in mechanical contracting for nearly three decades.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
25	Hobbs & Associates, INC	Exact match	Norfolk, VA, United StatesHQ recorded Oct 14, 2026	201-500	202 contacts →
	Exact match “Hobbs & Associates is a leading independent HVAC provider serving Virginia, Washington DC, Maryland, and Tennessee, with partners across the Southeast.” Recorded in the RevenueBase company graph · Oct 14, 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 “heating system installation contractors”. 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 8,177 heating system installation contractors based in the United States

See the full list, filter by size, metro and specialty, and access 19,452 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Heating system installation contractors based in the United States at a glance

As of Oct 14, 2026

29.6%Verified-email coverage

8.0Average contacts per company

11-50Median size (employees)

1.2%Largest-city concentration · Houston

Oct 14, 2026Page data refreshed

Companies by employee count

1-10

3,904

11-50

3,243

51-200

779

201-500

107

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 8,177 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 “heating system installation contractors” 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 19,452 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 14, 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.

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

How many heating system installation contractors are there based in the United States?

RevenueBase identified 8,177 company matches for heating system installation contractors 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?

Mckenney's, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most heating system installation contractors?

Houston leads with 95 company records, followed by New York (85) and San Antonio (56).

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 19,452 professional contacts with verified work emails tracked across these 8,177 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 14, 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.