Company lists · Data refreshed November 2026

Top 25 Geothermal maintenance services worldwide

RevenueBase identified 6,741 company matches for geothermal maintenance services worldwide as of November 2026 and tracks 40,886 professional contacts across them, including 8,991 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for geothermal maintenance services 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 maintenance services 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
6,741Companies
40,886Contacts tracked
8,991Verified emails
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The 25 largest geothermal maintenance services worldwide

Ranked by team size
Top 25 of 6,741 company matches for geothermal maintenance services 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 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
2Exact 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
3Exact 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
4Exact matchOrem, UT, United StatesHQ recorded Nov 6, 2026201-500265 contacts →

Exact match

“Any Hour Services think there should be no place safer or more comfortable than your home.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact 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
6Exact 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
7Exact 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
8Exact matchAirdrie, CanadaHQ recorded Nov 6, 2026201-500236 contacts →

Exact match

“TransCanada Turbines (TCT) is the sole authorized overhaul, repair and maintenance service provider for Siemens and General Electric (GE) aeroderivative industrial gas turbines…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact 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
10Exact 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
11Exact matchGreenwood, IN, United StatesHQ recorded Nov 6, 2026501-1,000173 contacts →

Exact match

“Peterman Brothers is a family-owned residential heating, cooling, plumbing & electrical company with offices in Indiana, Ohio, and Kentucky.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact 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
13Exact 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
14Exact 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
15Exact matchChesapeake, VA, United StatesHQ recorded Nov 6, 2026201-500141 contacts →

Exact match

“Established in 1960, Electric Motor and Contracting remains one of the largest independently owned electric motor and pump repair shops in the U.S.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchIcelandHQ recorded Nov 6, 202651-200137 contacts →

Exact match

“ABOUT http://iceland-drilling.com/ Iceland Drilling Ltd is a leading high technical company in the field of high temperature geothermal drilling and has many decades of experience…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact 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
18Exact matchCape Town, South AfricaHQ recorded Nov 6, 202651-200129 contacts →

Exact match

“Established in 2004 as a provider of air-conditioning and related maintenance services for commercial buildings, SFI Group has grown its original Cape Town based business to a…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchVilleurbanne, FranceHQ recorded Nov 6, 2026201-500124 contacts →

Exact match

“E2S, prend en charge l'entretien, le dépannage, les travaux de rénovation et d'optimisation, pour vos équipements, notamment de chauffage collectif, de petites et moyennes…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchMount Kisco, NY, United StatesHQ recorded Nov 6, 202651-200124 contacts →

Exact match

“Dandelion Energy is the nation’s leading residential geothermal provider, on a mission to make the world’s most efficient heating and cooling technology accessible to everyone.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchLombard, IL, United StatesHQ recorded Nov 6, 202651-200115 contacts →

Exact match

“Chicago's Facilities Management Company Midwest Mechanical is a commercial HVAC services and facility management company focused on energy efficiency for building owners and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchNorth Little Rock, MS, United StatesHQ recorded Nov 6, 2026201-500114 contacts →

Exact match

“Our goal at Powers is to make your buildings productive, comfortable, and efficient to operate.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchArmonk, NY, United StatesHQ recorded Nov 6, 202651-200111 contacts →

Exact match

“Brightcore Energy is a leading renewable energy solutions provider serving commercial, institutional, and government clients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchLargo, FL, United StatesHQ recorded Nov 6, 2026201-500109 contacts →

Exact match

“ConServ Building Services, LLC provides HVAC repairs, preventative maintenance, and 24-hour emergency service for commercial businesses throughout the southeastern United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchMarietta, GA, United StatesHQ recorded Nov 6, 2026201-500100 contacts →

Exact match

“During the past 30 years, Casteel Heating, Cooling, Plumbing & Electrical has been one of the most respected names in metro Atlanta for heating and air conditioning.”

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

Showing 25 of 6,741 geothermal maintenance services worldwide

See the full list, filter by size, metro and specialty, and access 8,991 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Geothermal maintenance services worldwide at a glance

As of Nov 6, 2026
22.0%Verified-email coverage
6.1Average contacts per company
1-10Median size (employees)
0.4%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
3,586
11-50
2,351
51-200
474
201-500
53
501-1,000
16
1,001-5,000
8
5,001-10,000
1
10001+
1

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 maintenance services are linked below.
What qualifies
Company records worldwide whose business descriptions match “geothermal maintenance services” 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 8,991 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 maintenance services by location

14 lists · largest first

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

How many geothermal maintenance services are there worldwide?

RevenueBase identified 6,741 company matches for geothermal maintenance services 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?

Dalkia EN tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most geothermal maintenance services?

The United States leads with 3,383 companies, followed by France (561) and Canada (340). Every geothermal maintenance services list by country and city is linked on this page.

Which city has the most geothermal maintenance services?

Houston leads with 30 company records, followed by New York (28) and San Antonio (27).

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 8,991 professional contacts with verified work emails tracked across these 6,741 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.