Company lists · Data refreshed September 2026

Top 25 Furnace installation companies worldwide

Name: Furnace installation companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 9,855 companies tracked

RevenueBase identified 9,855 furnace installation companies worldwide as of September 2026 and tracks 52,512 professional contacts across them, including 10,990 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers furnace installation companies worldwide, 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 20, 2026. Country and city lists for furnace installation companies follow the table.

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 20, 2026 86% judged on-target in blind review

9,855Companies

52,512Contacts tracked

10,990Verified emails

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The 25 largest furnace installation companies worldwide

Ranked by team size

Top 25 of 9,855 furnace installation companies worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to furnace 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	Horizon Services, LLC	Indirect evidence	Wilmington, DE, United StatesHQ checked Sep 20, 2026	501-1,000	448 contacts →
	Indirect 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 20, 2026
2	Aire Serv Heating And AIR Conditioning	Indirect evidence	Waco, TX, United StatesHQ checked Sep 20, 2026	201-500	369 contacts →
	Indirect evidence “For consumer services visit To discover more about franchise opportunities with Aire Serv® in your area visit Established in 1992, Aire Serv® is a global franchise organization…” Source: RevenueBase Database · checked Sep 20, 2026
3	Reliable Heating & AIR	Indirect evidence	Kennesaw, GA, United StatesHQ checked Sep 20, 2026	201-500	231 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
4	Morris-Jenkins	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 20, 2026	501-1,000	225 contacts →
	Indirect evidence “Morris-Jenkins is like family!” Source: RevenueBase Database · checked Sep 20, 2026
5	Airtron Heating & AIR Conditioning	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 20, 2026	1,001-5,000	214 contacts →
	Indirect evidence “Airtron has developed itself into one of the leading heating, ventilation, and air conditioning (HVAC) providers.” Source: RevenueBase Database · checked Sep 20, 2026
6	Energy Air, INC	Indirect evidence	Orlando, FL, United StatesHQ checked Sep 20, 2026	201-500	213 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
7	Isaac Heating And AIR Conditioning	Indirect evidence	Rochester, NY, United StatesHQ checked Sep 20, 2026	501-1,000	196 contacts →
	Indirect evidence “Isaac Heating and Air Conditioning has been family-owned and operated in Rochester since 1945.” Source: RevenueBase Database · checked Sep 20, 2026
8	Right Time Group Of Companies	Indirect evidence	St. Catharines, ON, CanadaHQ checked Sep 20, 2026	1,001-5,000	193 contacts →
	Indirect evidence “The Right Time Group of Companies has been proudly providing a full range of home HVAC solutions to customers across Ontario, Manitoba, Saskatchewan, Alberta and British Columbia…” Source: RevenueBase Database · checked Sep 20, 2026
9	Haller Enterprises	Indirect evidence	Lititz, PA, United StatesHQ checked Sep 20, 2026	201-500	191 contacts →
	Indirect 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 20, 2026
10	Peterman Brothers Heating, Cooling & Plumbing	Indirect evidence	Greenwood, IN, United StatesHQ checked Sep 20, 2026	501-1,000	188 contacts →
	Indirect evidence “Peterman Brothers is a family-owned residential heating, cooling, plumbing & electrical company with offices in Indiana, Ohio, and Kentucky.” Source: RevenueBase Database · checked Sep 20, 2026
11	LEN The Plumber Heating & AIR	Indirect evidence	Baltimore, MD, United StatesHQ checked Sep 20, 2026	201-500	175 contacts →
	Indirect 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 20, 2026
12	American Mechanical Services	Partial evidence	Laurel, MD, United StatesHQ checked Sep 20, 2026	501-1,000	169 contacts →
	Partial 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 20, 2026
13	Marshalls INC	Indirect evidence	Lynnwood, WA, United StatesHQ checked Sep 20, 2026	n/a	168 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
14	ONE Hour Heating & AIR Conditioning	Indirect evidence	Myrtle Beach, SC, United StatesHQ checked Sep 20, 2026	51-200	167 contacts →
	Indirect evidence “We believe in… excellence and heart.” Source: RevenueBase Database · checked Sep 20, 2026
15	GSM Services	Indirect evidence	Gastonia, NC, United StatesHQ checked Sep 20, 2026	201-500	159 contacts →
	Indirect evidence “For nearly a century, GSM Services has built its reputation on reliability, honesty, expert service, and high-quality workmanship.” Source: RevenueBase Database · checked Sep 20, 2026
16	Hoffmann Brothers	Indirect evidence	St Louis, MO, United StatesHQ checked Sep 20, 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 20, 2026
17	A.B. MAY Heating, A C, Plumbing & Electrical	Indirect evidence	Kansas City, MO, United StatesHQ checked Sep 20, 2026	201-500	144 contacts →
	Indirect evidence “Since 1959, A.B.” Source: RevenueBase Database · checked Sep 20, 2026
18	Swale Heating Part Of Sureserve	Indirect evidence	Sittingbourne, United KingdomHQ checked Sep 20, 2026	201-500	136 contacts →
	Indirect evidence “As an established heating company based in Kent, Swale Heating are proud to offer expert guidance in choosing the best heating and boiler systems & products available today.” Source: RevenueBase Database · checked Sep 20, 2026
19	Woodfin	Indirect evidence	Richmond, VA, United StatesHQ checked Sep 20, 2026	501-1,000	130 contacts →
	Indirect evidence “Whether it's heating and cooling, plumbing, electrical, generators, indoor air quality, propane and heating oil, Woodfin is the #1 home comfort provider for everything your home…” Source: RevenueBase Database · checked Sep 20, 2026
20	Paschal Air, Plumbing & Electric	Indirect evidence	Springdale, AR, United StatesHQ checked Sep 20, 2026	201-500	128 contacts →
	Indirect 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 20, 2026
21	Sureserve Compliance Central	Indirect evidence	Unit 5-6 Boudicca Road, United KingdomHQ checked Sep 20, 2026	501-1,000	127 contacts →
	Indirect evidence “With over 40 years of successful delivery experience in the domestic and commercial markets you can trust Sureserve Compliance Central with all your heating needs.” Source: RevenueBase Database · checked Sep 20, 2026
22	Southern Home Services	Indirect evidence	Maitland, FL, United StatesHQ checked Sep 20, 2026	1,001-5,000	119 contacts →
	Indirect 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 20, 2026
23	Powers Building Hvac, Controls, And Service	Indirect evidence	North Little Rock, AR, United StatesHQ checked Sep 20, 2026	201-500	113 contacts →
	Indirect evidence “Our goal at Powers is to make your buildings productive, comfortable, and efficient to operate.” Source: RevenueBase Database · checked Sep 20, 2026
24	Lawyer Mechanical Services	Indirect evidence	Las Vegas, NV, United StatesHQ checked Sep 20, 2026	51-200	110 contacts →
	Indirect evidence “Lawyer Mechanical Services (LMS) creates and maintains comfort.” Source: RevenueBase Database · checked Sep 20, 2026
25	ACIS	Indirect evidence	Mckinney, TX, United StatesHQ checked Sep 20, 2026	201-500	108 contacts →
	Indirect evidence “Air-Conditioning Innovative Solutions serves Dallas, Fort Worth, Houston and Austin with commercial HVAC services.” Source: RevenueBase Database · checked Sep 20, 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: furnace 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 furnace installation companies.
Partial evidence: Its own public description names part of furnace installation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name furnace 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 9,855 furnace installation companies worldwide

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Furnace installation companies worldwide at a glance

As of Sep 20, 2026

20.9%Verified-email coverage

5.3Average contacts per company

1-10Median size (employees)

0.7%Largest-city concentration · Houston

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

5,249

11-50

3,624

51-200

666

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 furnace 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.
Coverage: Every country. Country and city lists for furnace installation companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “furnace 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 furnace 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 furnace installation companies, and records with no verified work email.
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, 10,990 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 20, 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.

Furnace installation companies by location

26 lists · largest first

Every Furnace installation companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 furnace 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 furnace installation companies are there worldwide?

RevenueBase identified 9,855 furnace installation companies worldwide 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?

Horizon Services, LLC, headquartered in Wilmington, tops this list with the largest team on record.

Which country has the most furnace installation companies?

The United States leads with 6,582 companies, followed by Canada (740) and France (387). Every furnace installation companies list by country and city is linked on this page.

Which city has the most furnace installation companies?

Houston leads with 65 headquartered companies, followed by San Antonio (51) and Calgary (50).

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 10,990 verified decision-maker contacts tracked across these 9,855 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 20, 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.