Company lists · Data refreshed September 2026

Top 25 Furnace manufacturers worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 4,426 companies tracked

RevenueBase identified 4,426 furnace manufacturers worldwide as of September 2026 and tracks 57,358 professional contacts across them, including 13,367 with verified work emails. The United States is the largest market and Ahmedabad the largest hub.

This list covers furnace manufacturers 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 30, 2026. Country and city lists for furnace manufacturers 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 30, 2026 86% judged on-target in blind review

4,426Companies

57,358Contacts tracked

13,367Verified emails

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The 25 largest furnace manufacturers worldwide

Ranked by team size

Top 25 of 4,426 furnace manufacturers worldwide, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to furnace manufacturers: 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	Goodman AIR Conditioning & Heating	Indirect evidence	Waller, TX, United StatesHQ checked Sep 30, 2026	10001+	2,375 contacts →
	Indirect evidence “Since 1982, Goodman Manufacturing has had one goal: provide customers with reliable, high-quality, energy-efficient, and affordable indoor comfort products.” Source: RevenueBase Database · checked Sep 30, 2026
2	Electrotherm India Limited	Indirect evidence	Ahmedabad, IndiaHQ checked Sep 30, 2026	1,001-5,000	1,833 contacts →
	Indirect evidence “The journey of Electrotherm began in 1983 and was based on openness for ideas, eagerness to innovate, supplemented by in-house research & development and focus on customer-centric…” Source: RevenueBase Database · checked Sep 30, 2026
3	Aaon, INC	Indirect evidence	Tulsa, OK, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,208 contacts →
	Indirect evidence “Driving the industry forward through the design, manufacturing, and rigorous testing of premium HVAC equipment.” Source: RevenueBase Database · checked Sep 30, 2026
4	Hearth & Home Technologies	Partial evidence	Lakeville, MN, United StatesHQ checked Sep 30, 2026	1,001-5,000	774 contacts →
	Partial evidence “Hearth & Home Technologies (HHT), headquartered in Lakeville, Minnesota, is the nation’s leading manufacturer and supplier of hearth products, offering a diverse range of…” Source: RevenueBase Database · checked Sep 30, 2026
5	Riello	Indirect evidence	Legnago, ItalyHQ checked Sep 30, 2026	1,001-5,000	690 contacts →
	Indirect evidence “For over 100 years, Riello’s Energy For Life has been at the core of its industrial policy, guiding the company in the development of solutions designed to provide comfort and…” Source: RevenueBase Database · checked Sep 30, 2026
6	Bradford White	Partial evidence	Ambler, PA, United StatesHQ checked Sep 30, 2026	1,001-5,000	689 contacts →
	Partial 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 30, 2026
7	Concepcion-Carrier AIR Conditioning Company Ccac	Indirect evidence	Alabang, PhilippinesHQ checked Sep 30, 2026	501-1,000	670 contacts →
	Indirect evidence “Formed in January 1998, Concepcion-Carrier Air Conditioning Company (CCAC) brings together two leaders in the air conditioning industry: Carrier Corporation of the United States…” Source: RevenueBase Database · checked Sep 30, 2026
8	Cleaver-Brooks	Partial evidence	Thomasville, GA, United StatesHQ checked Sep 30, 2026	1,001-5,000	631 contacts →
	Partial evidence “Cleaver-Brooks, Inc, a manufacturer of boiler room products for over 90 years, is the only single source manufacturer and supplier of boiler room products including boilers…” Source: RevenueBase Database · checked Sep 30, 2026
9	Napoleon	Indirect evidence	Barrie, ON, CanadaHQ checked Sep 30, 2026	1,001-5,000	620 contacts →
	Indirect evidence “Year after year, Napoleon remains the trailblazer in pioneering patented advancements.” Source: RevenueBase Database · checked Sep 30, 2026
10	Baymak BDR Thermea Group	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 30, 2026	501-1,000	439 contacts →
	Indirect evidence “1969 yılında faaliyetlerine başlayan ve 2013 yılı itibarıyla iklimlendirme sektöründe Avrupa’nın ilk üç şirketi arasında yer alan BDR Thermea Group bünyesine katılan Baymak…” Source: RevenueBase Database · checked Sep 30, 2026
11	Immergas S.P.A	Indirect evidence	Reggio Emilia, ItalyHQ checked Sep 30, 2026	501-1,000	374 contacts →
	Indirect evidence “Produciamo oltre 300 mila caldaie l’anno e commercializziamo apparecchi per riscaldamento e raffrescamento domestico in 50 paesi di tutto il Mondo, con dodici filiali commerciali…” Source: RevenueBase Database · checked Sep 30, 2026
12	Lochinvar, LLC	Partial evidence	Lebanon, TN, IndiaHQ checked Sep 30, 2026	201-500	340 contacts →
	Partial evidence “Lochinvar, LLC is a leading manufacturer of high-efficiency water heaters, boilers, pool heaters and custom pre-piped packaged systems.” Source: RevenueBase Database · checked Sep 30, 2026
13	Nailor Industries, INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	1,001-5,000	316 contacts →
	Indirect evidence “Nailor Industries, Inc, operating under Nailor International Group, is a privately held, family-owned company with headquarters located in Houston, TX.” Source: RevenueBase Database · checked Sep 30, 2026
14	Cheminées Poujoulat	Indirect evidence	Saint-symphorien, FranceHQ checked Sep 30, 2026	1,001-5,000	311 contacts →
	Indirect evidence “Cheminées Poujoulat, a Poujoulat Group’s brand (1 700 employees, with bases in 30 countries through 22 companies), is the european leader in metal chimney systems (stacks and…” Source: RevenueBase Database · checked Sep 30, 2026
15	FIVES	Partial evidence	Paris, FranceHQ checked Sep 30, 2026	201-500	296 contacts →
	Partial evidence “Fives’ subsidiaries in the Energy \| Combustion business line design and manufacture burners, controls and customized combustion systems for a wide range of industry applications…” Source: RevenueBase Database · checked Sep 30, 2026
16	Rinnai Australia	Indirect evidence	Braeside, AustraliaHQ checked Sep 30, 2026	201-500	294 contacts →
	Indirect evidence “Following Rinnai's international origins dating back more than 100 years, Rinnai Australia was established 50 years ago and since then has been providing Australians with the best…” Source: RevenueBase Database · checked Sep 30, 2026
17	Ideal Heating	Partial evidence	Hull, United KingdomHQ checked Sep 30, 2026	501-1,000	286 contacts →
	Partial evidence “The UK’s leading heating manufacturer, providing reliable, sustainable warmth through boilers, heat pumps and controls Rated Excellent on Trustpilot Award-winning Keeping Homes…” Source: RevenueBase Database · checked Sep 30, 2026
18	Heurtey Petrochem Solutions	Partial evidence	Rueil-malmaison, FranceHQ checked Sep 30, 2026	1,001-5,000	277 contacts →
	Partial evidence “Heurtey Petrochem Solutions is a world leader in process furnaces for refining, petrochemicals, syngas and hydrogen markets.” Source: RevenueBase Database · checked Sep 30, 2026
19	Aäsgard	Indirect evidence	Rennes, FranceHQ checked Sep 30, 2026	501-1,000	269 contacts →
	Indirect evidence “Aäsgard est une enseigne de distribution, d’installation et d'entretien de poêles à bois et à granulés haut de gamme, au design contemporain, d’origine essentiellement scandinave…” Source: RevenueBase Database · checked Sep 30, 2026
20	Sermeta	Partial evidence	Morlaix, FranceHQ checked Sep 30, 2026	501-1,000	256 contacts →
	Partial evidence “Sermeta is the world leading manufacturer of stainless steel heat exchanger for gas condensing boilers.” Source: RevenueBase Database · checked Sep 30, 2026
21	Escorial	Indirect evidence	General San Martín, ArgentinaHQ checked Sep 30, 2026	201-500	252 contacts →
	Indirect evidence “Somos una empresa familiar con más de 50 años de permanencia en el mercado de electrodomésticos.” Source: RevenueBase Database · checked Sep 30, 2026
22	Raypak	Partial evidence	Oxnard, United StatesHQ checked Sep 30, 2026	501-1,000	242 contacts →
	Partial evidence “For over 70 years, Raypak has been the world's leading manufacturer of copper finned boilers and heaters.” Source: RevenueBase Database · checked Sep 30, 2026
23	Airtron Heating & AIR Conditioning	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 30, 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 30, 2026
24	Dimplex UK	Indirect evidence	Southampton, United KingdomHQ checked Sep 30, 2026	501-1,000	201 contacts →
	Indirect evidence “For over 75 years, Dimplex has been the trusted name for electric heating.” Source: RevenueBase Database · checked Sep 30, 2026
25	Intergas Verwarming B.V	Indirect evidence	Coevorden, NetherlandsHQ checked Sep 30, 2026	201-500	199 contacts →
	Indirect evidence “Intergas: an introduction.” Source: RevenueBase Database · checked Sep 30, 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 manufacturers. 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 manufacturers.
Partial evidence: Its own public description names part of furnace manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name furnace manufacturers. 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 4,426 furnace manufacturers worldwide

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Furnace manufacturers worldwide at a glance

As of Sep 30, 2026

23.3%Verified-email coverage

13.0Average contacts per company

11-50Median size (employees)

1.1%Largest-city concentration · Ahmedabad

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

1,718

11-50

1,527

51-200

756

201-500

192

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 manufacturers, 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 manufacturers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “furnace manufacturers”. 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 manufacturers), 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 manufacturers, 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, 13,367 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 30, 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 manufacturers by location

15 lists · largest first

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

Countries

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 manufacturers, 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 manufacturers are there worldwide?

RevenueBase identified 4,426 furnace manufacturers 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?

Goodman AIR Conditioning & Heating, headquartered in Waller, tops this list with the largest team on record.

Which country has the most furnace manufacturers?

The United States leads with 1,169 companies, followed by India (459) and Canada (305). Every furnace manufacturers list by country and city is linked on this page.

Which city has the most furnace manufacturers?

Ahmedabad leads with 50 headquartered companies, followed by Istanbul (34) and Pune (34).

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 13,367 verified decision-maker contacts tracked across these 4,426 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 30, 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.