Company lists · Data refreshed November 2026

Top 25 Heating system installers based in the United States

Name: 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 Nov 6, 2026 8,441 companies tracked

RevenueBase identified 8,441 company matches for heating system installers associated with the United States as of November 2026 and tracks 57,156 professional contacts across them, including 14,385 with verified work emails. Houston is the largest hub.

This list covers company matches for 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 November 6, 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 Nov 6, 2026 How this list was built

8,441Companies

57,156Contacts tracked

14,385Verified emails

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The 25 largest heating system installers based in the United States

Ranked by team size

Top 25 of 8,441 company matches for heating system installers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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	Horizon Services, LLC	Exact match	Wilmington, MD, United StatesHQ recorded Nov 6, 2026	501-1,000	472 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 · Nov 6, 2026 · View company records in RevenueBase
2	United Mechanical	Exact match	San Jose, CA, United StatesHQ recorded Nov 6, 2026	201-500	350 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 · Nov 6, 2026 · View company records in RevenueBase
3	Goettl AIR Conditioning & Plumbing	Exact match	Las Vegas, NV, United StatesHQ recorded Nov 6, 2026	501-1,000	329 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 · Nov 6, 2026 · View company records in RevenueBase
4	Weil-Mclain	Exact match	Burr Ridge, NC, United StatesHQ recorded Nov 6, 2026	501-1,000	299 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 · Nov 6, 2026 · View company records in RevenueBase
5	Morris-Jenkins	Exact match	Charlotte, NC, United StatesHQ recorded Nov 6, 2026	501-1,000	258 contacts →
	Exact match “Morris-Jenkins is like family!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Airtron Heating & AIR Conditioning	Exact match	Columbus, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	249 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 · Nov 6, 2026 · View company records in RevenueBase
7	Reliable Heating & AIR	Exact match	Kennesaw, GA, United StatesHQ recorded Nov 6, 2026	201-500	245 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 · Nov 6, 2026 · View company records in RevenueBase
8	Energy Air, INC	Exact match	Orlando, FL, United StatesHQ recorded Nov 6, 2026	201-500	223 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Maxair Mechanical	Exact match	Marietta, GA, United StatesHQ recorded Nov 6, 2026	201-500	211 contacts →
	Exact match “MAXAIR Mechanical, founded in 1988, is a people first company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Haller Enterprises	Exact match	Lititz, PA, United StatesHQ recorded Nov 6, 2026	201-500	204 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 · Nov 6, 2026 · View company records in RevenueBase
11	Isaac Heating And AIR Conditioning	Exact match	Rochester, NY, United StatesHQ recorded Nov 6, 2026	501-1,000	193 contacts →
	Exact match “Isaac Heating and Air Conditioning has been family-owned and operated in Rochester since 1945.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Emcor Services Aircond	Exact match	Smyrna, SC, United StatesHQ recorded Nov 6, 2026	201-500	191 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 · Nov 6, 2026 · View company records in RevenueBase
13	Coolray Heating, Cooling, Plumbing, Electrical	Exact match	Marietta, GA, United StatesHQ recorded Nov 6, 2026	501-1,000	189 contacts →
	Exact match “At Coolray, we base our business principles on people helping people with honest, dependable service you can count on.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Rooter Hero Plumbing & AIR	Exact match	Los Angeles, CA, United StatesHQ recorded Nov 6, 2026	201-500	185 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	LEN The Plumber Heating & AIR	Exact match	Baltimore, MD, United StatesHQ recorded Nov 6, 2026	201-500	183 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	American Mechanical Services	Exact match	Laurel, CA, United StatesHQ recorded Nov 6, 2026	501-1,000	175 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 · Nov 6, 2026 · View company records in RevenueBase
17	Newcomb And Company	Exact match	Raleigh, NC, United StatesHQ recorded Nov 6, 2026	201-500	174 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 · Nov 6, 2026 · View company records in RevenueBase
18	Peterman Brothers Heating, Cooling & Plumbing	Exact match	Greenwood, IN, United StatesHQ recorded Nov 6, 2026	501-1,000	173 contacts →
	Exact match “Peterman Brothers is a family-owned residential heating, cooling, plumbing & electrical company with offices in Indiana, Ohio, and Kentucky.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Marshalls INC	Exact match	Lynnwood, WA, United StatesHQ recorded Nov 6, 2026	n/a	173 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	GSM Services	Exact match	Gastonia, NC, United StatesHQ recorded Nov 6, 2026	201-500	169 contacts →
	Exact match “For nearly a century, GSM Services has built its reputation on reliability, honesty, expert service, and high-quality workmanship.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	ONE Hour Heating & AIR Conditioning	Exact match	Myrtle Beach, SC, United StatesHQ recorded Nov 6, 2026	51-200	166 contacts →
	Exact match “We believe in… excellence and heart.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Hoffmann Brothers	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	501-1,000	161 contacts →
	Exact match “About Hoffmann Brothers We are on a mission to Improve Life in Every Home.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	HB Mcclure Company	Exact match	Harrisburg, PA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	145 contacts →
	Exact match “Since 1914, HB McClure has served homes and businesses in Central Pennsylvania by providing premier residential, commercial, and design/build mechanical services, including…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	A.B. MAY Heating, A C, Plumbing & Electrical	Exact match	Kansas City, MO, United StatesHQ recorded Nov 6, 2026	201-500	144 contacts →
	Exact match “Since 1959, A.B.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Paschal Air, Plumbing & Electric	Exact match	Springdale, AR, United StatesHQ recorded Nov 6, 2026	201-500	142 contacts →
	Exact match “For more than 50 years, Paschal has provided professional Heating & Air, Plumbing & Electrical services to homeowners & businesses in Arkansas, Texas, Oklahoma, Kansas & Missouri.” Recorded in the RevenueBase company graph · Nov 6, 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 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 8,441 heating system installers based in the United States

See the full list, filter by size, metro and specialty, and access 14,385 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Heating system installers based in the United States at a glance

As of Nov 6, 2026

25.2%Verified-email coverage

6.8Average contacts per company

11-50Median size (employees)

1.1%Largest-city concentration · Houston

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

4,134

11-50

3,370

51-200

688

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 8,441 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 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 14,385 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 November 6, 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 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 “heating system installers”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 8,441 company matches for heating system installers associated with the United States as of November 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?

Horizon Services, LLC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most heating system installers?

Houston leads with 90 company records, followed by New York (79) and San Antonio (62).

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 14,385 professional contacts with verified work emails tracked across these 8,441 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 November 6, 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.