Company lists · Data refreshed November 2026

Top 25 Geothermal hvac companies worldwide

RevenueBase identified 9,912 company matches for geothermal hvac companies worldwide as of November 2026 and tracks 72,905 professional contacts across them, including 18,842 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for geothermal hvac companies 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 November 6, 2026. Country and city lists for geothermal hvac companies 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 Nov 6, 2026 How this list was built
9,912Companies
72,905Contacts tracked
18,842Verified emails
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The 25 largest geothermal hvac companies worldwide

Ranked by team size
Top 25 of 9,912 company matches for geothermal hvac companies worldwide, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchToronto, ON, CanadaHQ recorded Nov 6, 20261,001-5,0001,656 contacts →

Exact match

“As a leader in home services and energy efficient solutions for over 60 years, Reliance Home Comfort® (Reliance) is committed to being the Destination of Choice by delivering…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchReno, NV, United StatesHQ recorded Nov 6, 20261,001-5,0001,328 contacts →

Exact match

“Clean, reliable energy solutions provided by geothermal power, recovered energy, and energy storage solutions are our expertise, commitment, and focus.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchWarwick, United KingdomHQ recorded Nov 6, 20261,001-5,000865 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 · Nov 6, 2026 · View company records in RevenueBase
4Exact matchEysins, SwitzerlandHQ recorded Nov 6, 20261,001-5,000823 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 · Nov 6, 2026 · View company records in RevenueBase
5Exact matchIrving, TX, United StatesHQ recorded Nov 6, 2026201-500583 contacts →

Exact match

“In business for over 45 years, Texas AirSystems has grown to be recognized as one of the premier partners for commercial HVAC solutions in Texas, boasting over 500 associates…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchHolzminden, GermanyHQ recorded Nov 6, 20265,001-10,000509 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 · Nov 6, 2026 · View company records in RevenueBase
7Exact matchİstanbul, TürkiyeHQ recorded Nov 6, 2026501-1,000484 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 · Nov 6, 2026 · View company records in RevenueBase
8Exact matchSan Bonifacio, ItalyHQ recorded Nov 6, 20261,001-5,000442 contacts →

Exact match

“Feel Well.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchMesa, AZ, United StatesHQ recorded Nov 6, 2026501-1,000397 contacts →

Exact match

“Shaping the Future of Sustainable Climate Control At XNRGY Climate Systems, we are on a mission to revolutionize climate control with a focus on sustainability and innovation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchİstanbul, TürkiyeHQ recorded Nov 6, 20261,001-5,000389 contacts →

Exact match

“Vaillant Group, ısıtma ve havalandırma teknolojisi alanlarında uluslararası pazarlarda lider bir kuruluştur.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchColumbia, VA, United StatesHQ recorded Nov 6, 2026201-500351 contacts →

Exact match

“Havtech delivers innovative commercial and industrial HVAC solutions across Maryland, Washington, D.C, Virginia, Pennsylvania, and West Virginia.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchGaithersburg, MD, United StatesHQ recorded Nov 6, 2026201-500333 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 · Nov 6, 2026 · View company records in RevenueBase
13Exact matchBraeside, AustraliaHQ recorded Nov 6, 2026201-500323 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 · Nov 6, 2026 · View company records in RevenueBase
14Exact matchCabo De Santo Agostinho, BrazilHQ recorded Nov 6, 2026201-500311 contacts →

Exact match

“A Arclima Engenharia é uma empresa brasileira especializada em Climatização, Refrigeração e Eficiência Energética (HVAC), com atuação em todo o território nacional.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchHouston, CA, United StatesHQ recorded Nov 6, 202651-200285 contacts →

Exact match

“Fervo Energy provides 24/7 carbon-free energy through the development of next-generation geothermal power.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchBrea, CA, United StatesHQ recorded Nov 6, 2026201-500252 contacts →

Exact match

“Service Champions is the premier plumbing, heating and air conditioning company in Southern California, serving residential homeowners in all of Orange County, and parts of LA…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchColumbus, TX, United StatesHQ recorded Nov 6, 20261,001-5,000249 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
18Exact matchDiepenbeek, BelgiumHQ recorded Nov 6, 2026501-1,000241 contacts →

Exact match

“The most economical radiators • Maximum heat for low water temperatures • Lower energy consumption • Fastest response time for maximum comfort For more than 50 years, Jaga has led…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchDenver, CO, United StatesHQ recorded Nov 6, 2026201-500232 contacts →

Exact match

“Tolin Mechanical is a Leading Energy & Commercial HVAC Services Company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchFort Wayne, IN, United StatesHQ recorded Nov 6, 2026201-500229 contacts →

Exact match

“WaterFurnace International, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchOrlando, FL, United StatesHQ recorded Nov 6, 2026201-500223 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBassano Del Grappa, ItalyHQ recorded Nov 6, 2026501-1,000205 contacts →

Exact match

“Nata negli anni 1925 come produttore di prodotti smaltati, dagli anni 70 Baxi è entrata nel settore HVAC con apparecchi domestici per il riscaldamento e la climatizzazione.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchSt. Catharines, ON, CanadaHQ recorded Nov 6, 20261,001-5,000199 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchOklahoma City, OK, United StatesHQ recorded Nov 6, 2026501-1,000195 contacts →

Exact match

“ClimateMaster’s role as a domestic energy and geothermal heating and cooling leader extends back to the late 1950s when the company was first founded in Florida.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchRochester, NY, United StatesHQ recorded Nov 6, 2026501-1,000193 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

Showing 25 of 9,912 geothermal hvac companies worldwide

See the full list, filter by size, metro and specialty, and access 18,842 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Geothermal hvac companies worldwide at a glance

As of Nov 6, 2026
25.8%Verified-email coverage
7.4Average contacts per company
1-10Median size (employees)
0.6%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
5,153
11-50
3,429
51-200
794
201-500
123
501-1,000
39
1,001-5,000
23
5,001-10,000
3
10001+
16

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 hvac companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “geothermal hvac companies” 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 18,842 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.

Geothermal hvac companies by location

28 lists · largest first

Every Geothermal hvac 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 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 hvac companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many geothermal hvac companies are there worldwide?

RevenueBase identified 9,912 company matches for geothermal hvac companies worldwide 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?

Reliance Home Comfort tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most geothermal hvac companies?

The United States leads with 4,276 companies, followed by France (684) and Canada (523). Every geothermal hvac companies list by country and city is linked on this page.

Which city has the most geothermal hvac companies?

Houston leads with 60 company records, followed by London (38) and New York (37).

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 18,842 professional contacts with verified work emails tracked across these 9,912 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.