Company lists · Data refreshed October 2026

Top 25 Geothermal heating manufacturers worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Oct 13, 2026 5,642 companies tracked

RevenueBase identified 5,642 company matches for geothermal heating manufacturers worldwide as of October 2026 and tracks 87,519 professional contacts across them, including 19,595 with verified work emails. Germany is the largest market and London the largest hub.

This list covers company matches for geothermal heating manufacturers worldwide, 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 13, 2026. Country and city lists for geothermal heating manufacturers follow the table.

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 13, 2026 How this list was built

5,642Companies

87,519Contacts tracked

19,595Verified emails

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The 25 largest geothermal heating manufacturers worldwide

Ranked by team size

Top 25 of 5,642 company matches for geothermal heating manufacturers worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 13, 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	A. O. Smith Corporation	Exact match	Milwaukee, WI, United StatesHQ recorded Oct 13, 2026	10001+	15,417 contacts →
	Exact match “Celebrating its 150th year of business, A.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
2	Vaillant Group	Exact match	Remscheid, GermanyHQ recorded Oct 13, 2026	10001+	3,153 contacts →
	Exact match “Our corporate vision shapes everything we do and inspires our employees every day.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
3	Ormat Technologies, INC	Exact match	Reno, NV, United StatesHQ recorded Oct 13, 2026	1,001-5,000	1,298 contacts →
	Exact match “With over five decades of experience, Ormat Technologies, Inc.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
4	Danfoss Climate Solutions	Exact match	Nordborg, DenmarkHQ recorded Oct 13, 2026	10001+	1,227 contacts →
	Exact match “At Danfoss Climate Solutions, we engineer energy-efficient heating and cooling solutions to help the world get more out of less.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
5	Thermon	Exact match	Austin, TX, United StatesHQ recorded Oct 13, 2026	1,001-5,000	960 contacts →
	Exact match “Industrial Process Heating Solutions Through its global network, Thermon provides safe, reliable and innovative mission critical industrial process heating solutions.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
6	BAXI	Exact match	Warwick, United KingdomHQ recorded Oct 13, 2026	1,001-5,000	884 contacts →
	Exact match “We're leading the energy transition to zero carbon, by offering complete residential and commercial heating and hot water solutions.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
7	IMI Climate Control	Exact match	Eysins, SwitzerlandHQ recorded Oct 13, 2026	1,001-5,000	794 contacts →
	Exact match “At IMI, our Climate Control sector designs intelligent hydronic solutions that optimise comfort, energy use, and system reliability, helping create smarter, greener, more…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
8	Bradford White	Exact match	Ambler, PA, United StatesHQ recorded Oct 13, 2026	1,001-5,000	703 contacts →
	Exact match “Bradford White Corporation is an American-owned, full-line manufacturer of residential, commercial, and industrial products for water heating, space heating, combination heating…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
9	Aalberts Hydronic Flow Control	Exact match	Almere, NetherlandsHQ recorded Oct 13, 2026	1,001-5,000	658 contacts →
	Exact match “When it comes to comfortable climate in buildings, we set the ultimate standards.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
10	Chromalox	Exact match	Pittsburgh, PA, United StatesHQ recorded Oct 13, 2026	1,001-5,000	654 contacts →
	Exact match “When industrial operations depend on heat that simply cannot fail, Chromalox brings unmatched technical knowledge and high‑performance electric heating solutions that stand the…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
11	Stiebel Eltron Group	Exact match	Holzminden, GermanyHQ recorded Oct 13, 2026	5,001-10,000	496 contacts →
	Exact match “STIEBEL ELTRON bietet hocheffiziente Produkte und Dienstleistungen für die Heizung, Kühlung, Lüftung und Warmwasserbereitung von Gebäuden.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
12	Carrier India	Exact match	Gurgaon, IndiaHQ recorded Oct 13, 2026	501-1,000	479 contacts →
	Exact match “Founded by Dr.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
13	Baymak BDR Thermea Group	Exact match	İstanbul, TürkiyeHQ recorded Oct 13, 2026	501-1,000	472 contacts →
	Exact match “1969 yılında faaliyetlerine başlayan ve 2013 yılı itibarıyla iklimlendirme sektöründe Avrupa’nın ilk üç şirketi arasında yer alan BDR Thermea Group bünyesine katılan Baymak…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
14	Ferroli Group	Exact match	San Bonifacio, ItalyHQ recorded Oct 13, 2026	1,001-5,000	435 contacts →
	Exact match “Comfort, designed around you – Since 1955, Ferroli has been a trusted name in HVAC, delivering innovative solutions for heating, cooling and hot water that combine comfort, energy…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
15	Kanthal	Exact match	Hallstahammar, ItalyHQ recorded Oct 13, 2026	1,001-5,000	415 contacts →
	Exact match “Electrification of heating processes is a key enabler for a fossil-free industry.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
16	Remeha	Exact match	Apeldoorn, NetherlandsHQ recorded Oct 13, 2026	201-500	408 contacts →
	Exact match “Remeha, the comfort innovators Remeha ontwikkelt al sinds 1935 voortdurend innovatieve en energiezuinige producten voor warmte en warm water, zowel voor woningen als utiliteit.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
17	Immergas S.P.A	Exact match	Reggio Emilia, ItalyHQ recorded Oct 13, 2026	501-1,000	382 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
18	Rheem Australia	Exact match	Rydalmere, AustraliaHQ recorded Oct 13, 2026	1,001-5,000	353 contacts →
	Exact match “Rheem Australia is the market leader in the design and manufacture of a wide range of water heating products that utilise gas, electric, solar and refrigeration technologies.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
19	Lochinvar, LLC	Exact match	Lebanon, TN, IndiaHQ recorded Oct 13, 2026	201-500	346 contacts →
	Exact match “Lochinvar, LLC is a leading manufacturer of high-efficiency water heaters, boilers, pool heaters and custom pre-piped packaged systems.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
20	Purmo Group	Exact match	Helsinki, FinlandHQ recorded Oct 13, 2026	1,001-5,000	327 contacts →
	Exact match “We are Purmo Group, leader in sustainable indoor climate comfort solutions.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
21	Rinnai Australia	Exact match	Braeside, AustraliaHQ recorded Oct 13, 2026	201-500	317 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
22	Giacomini S.P.A	Exact match	San Maurizio D'opaglio, ItalyHQ recorded Oct 13, 2026	501-1,000	316 contacts →
	Exact match “True Made in Italy.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
23	Anvolia	Exact match	La Chapelle-sur-erdre, FranceHQ recorded Oct 13, 2026	501-1,000	306 contacts →
	Exact match “Créée en 1991, Anvolia, entreprise familiale indépendante de génie climatique, conçoit, installe et maintient des solutions de chauffage, climatisation, traitement de l'air et…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
24	Ideal Heating	Exact match	Hull, United KingdomHQ recorded Oct 13, 2026	501-1,000	302 contacts →
	Exact match “The UK’s leading heating manufacturer, providing reliable, sustainable warmth through boilers, heat pumps and controls Rated Excellent on Trustpilot Award-winning Keeping Homes…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
25	Daikin Airconditioning Germany Gmbh	Exact match	Unterhaching, GermanyHQ recorded Oct 13, 2026	501-1,000	263 contacts →
	Exact match “DAIKIN ist weltweit führender Hersteller von Wärmepumpen, Lüftungs- und Klimatisierungssystemen.” Recorded in the RevenueBase company graph · Oct 13, 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 “geothermal heating manufacturers”. 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 5,642 geothermal heating manufacturers worldwide

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Geothermal heating manufacturers worldwide at a glance

As of Oct 13, 2026

22.4%Verified-email coverage

15.5Average contacts per company

11-50Median size (employees)

0.5%Largest-city concentration · London

Oct 13, 2026Page data refreshed

Companies by employee count

1-10

2,592

11-50

1,869

51-200

726

201-500

177

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

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.
Coverage: Every country. Country and city lists for geothermal heating manufacturers are linked below.
What qualifies: Company records worldwide whose business descriptions match “geothermal heating manufacturers” 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. 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 19,595 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 13, 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.

Geothermal heating manufacturers by location

26 lists · largest first

Every Geothermal heating 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 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 “geothermal heating manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many geothermal heating manufacturers are there worldwide?

RevenueBase identified 5,642 company matches for geothermal heating manufacturers worldwide 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?

A. O. Smith Corporation tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most geothermal heating manufacturers?

Germany leads with 573 companies, followed by the United States (462) and France (424). Every geothermal heating manufacturers list by country and city is linked on this page.

Which city has the most geothermal heating manufacturers?

London leads with 31 company records, followed by Sao Paulo (23) and Bangalore (22).

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 19,595 professional contacts with verified work emails tracked across these 5,642 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 13, 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.