Company lists · Data refreshed November 2026

Top 25 Geothermal system maintenance providers worldwide

RevenueBase identified 6,125 company matches for geothermal system maintenance providers worldwide as of November 2026 and tracks 42,207 professional contacts across them, including 10,151 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for geothermal system maintenance providers 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 system maintenance providers 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
6,125Companies
42,207Contacts tracked
10,151Verified emails
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The 25 largest geothermal system maintenance providers worldwide

Ranked by team size
Top 25 of 6,125 company matches for geothermal system maintenance providers 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 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
2Exact matchLevallois-perret, FranceHQ recorded Nov 6, 20261,001-5,0001,054 contacts →

Exact match

“A major player in the energy transition and leader in home services, PROXISERVE provides its customers with innovative solutions enabling them to reduce their energy consumption…”

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 matchLelystad, NetherlandsHQ recorded Nov 6, 20261,001-5,000813 contacts →

Exact match

“Sinds het ontstaan in 1947 is Feenstra marktleider in installatietechniek met een nationale dekking.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchCourbevoie, FranceHQ recorded Nov 6, 2026501-1,000544 contacts →

Exact match

“Sur les centrales nucléaires du groupe EDF, nous intervenons sur tous les types de bâtiments, à la fois de production et tertiaires.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchWilmington, MD, United StatesHQ recorded Nov 6, 2026501-1,000472 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
7Exact matchMadrid, SpainHQ recorded Nov 6, 2026501-1,000311 contacts →

Exact match

“Grupo Remica se crea en 1984 como empresa de instalación y mantenimiento de sistemas de calefacción, climatización y ACS.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchPasig, PhilippinesHQ recorded Nov 6, 2026501-1,000279 contacts →

Exact match

“Thermaprime Drilling Corporation Geothermal, Oil & Gas Drilling BASIC SERVICES Well Construction Management • Drilling of geothermal wells • Drilling of onshore oil and gas wells…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchCharlotte, NC, United StatesHQ recorded Nov 6, 2026501-1,000258 contacts →

Exact match

“Morris-Jenkins is like family!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact 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
11Exact matchKennesaw, GA, United StatesHQ recorded Nov 6, 2026201-500245 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
12Exact 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
13Exact 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
14Exact matchLititz, PA, United StatesHQ recorded Nov 6, 2026201-500204 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
15Exact matchZwanenburg, NetherlandsHQ recorded Nov 6, 2026201-500199 contacts →

Exact match

“Bonarius Bedrijven De naam Bonarius was lange tijd synoniem voor de aanleg en het onderhoud van cv-installaties.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact 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
17Exact matchDania Beach, FL, United StatesHQ recorded Nov 6, 2026201-500177 contacts →

Exact match

“Hill York is a full service contractor that offers a full array of energy efficient air-conditioning services from concept to completion, maintenance to repair and everything in…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchLynnwood, WA, United StatesHQ recorded Nov 6, 2026n/a173 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchGastonia, NC, United StatesHQ recorded Nov 6, 2026201-500169 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
20Exact matchMyrtle Beach, SC, United StatesHQ recorded Nov 6, 202651-200166 contacts →

Exact match

“We believe in… excellence and heart.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchKansas City, MO, United StatesHQ recorded Nov 6, 2026201-500144 contacts →

Exact match

“Since 1959, A.B.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchSpringdale, AR, United StatesHQ recorded Nov 6, 2026201-500142 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
23Exact matchMontpellier, FranceHQ recorded Nov 6, 2026201-500142 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchUnit 5-6 Boudicca Road, United KingdomHQ recorded Nov 6, 2026501-1,000136 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchRichmond, VA, United StatesHQ recorded Nov 6, 2026501-1,000131 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 6,125 geothermal system maintenance providers worldwide

See the full list, filter by size, metro and specialty, and access 10,151 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Geothermal system maintenance providers worldwide at a glance

As of Nov 6, 2026
24.1%Verified-email coverage
6.9Average contacts per company
1-10Median size (employees)
0.4%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
3,219
11-50
2,139
51-200
413
201-500
52
501-1,000
15
1,001-5,000
10
5,001-10,000
1
10001+
3

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 system maintenance providers are linked below.
What qualifies
Company records worldwide whose business descriptions match “geothermal system maintenance providers” 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 10,151 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 system maintenance providers by location

15 lists · largest first

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

How many geothermal system maintenance providers are there worldwide?

RevenueBase identified 6,125 company matches for geothermal system maintenance providers 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?

Ormat Technologies, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most geothermal system maintenance providers?

The United States leads with 2,165 companies, followed by France (684) and Italy (382). Every geothermal system maintenance providers list by country and city is linked on this page.

Which city has the most geothermal system maintenance providers?

Houston leads with 22 company records, followed by Madrid (20) and London (18).

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 10,151 professional contacts with verified work emails tracked across these 6,125 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.