Company lists · Data refreshed October 2026

Top 25 Commercial geothermal contractors based in the United States

Name: Commercial geothermal contractors based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 10, 2026 972 companies tracked

RevenueBase identified 972 company matches for commercial geothermal contractors associated with the United States as of October 2026 and tracks 9,945 professional contacts across them, including 3,573 with verified work emails. Houston is the largest hub.

This list covers company matches for commercial geothermal contractors associated with the United States, 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 10, 2026.

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 10, 2026 How this list was built

972Companies

9,945Contacts tracked

3,573Verified emails

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The 25 largest commercial geothermal contractors based in the United States

Ranked by team size

Top 25 of 972 company matches for commercial geothermal contractors based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 10, 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	Ormat Technologies, INC	Exact match	Reno, NV, United StatesHQ recorded Oct 10, 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 10, 2026 · View company records in RevenueBase
2	Boland	Exact match	Gaithersburg, MD, United StatesHQ recorded Oct 10, 2026	201-500	329 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 · Oct 10, 2026 · View company records in RevenueBase
3	Airtron Heating & AIR Conditioning	Exact match	Columbus, OH, United StatesHQ recorded Oct 10, 2026	1,001-5,000	238 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 · Oct 10, 2026 · View company records in RevenueBase
4	Tolin Mechanical Systems	Exact match	Denver, CO, United StatesHQ recorded Oct 10, 2026	201-500	228 contacts →
	Exact match “Tolin Mechanical is a Leading Energy & Commercial HVAC Services Company.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
5	Waterfurnace International	Exact match	Fort Wayne, IN, United StatesHQ recorded Oct 10, 2026	201-500	225 contacts →
	Exact match “WaterFurnace International, Inc.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
6	Haynes Mechanical Systems	Exact match	Greenwood Village, CO, United StatesHQ recorded Oct 10, 2026	201-500	203 contacts →
	Exact match “Haynes Mechanical Systems has been keeping commercial buildings running strong since 1968.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
7	Maxair Mechanical	Exact match	Marietta, GA, United StatesHQ recorded Oct 10, 2026	201-500	202 contacts →
	Exact match “MAXAIR Mechanical, founded in 1988, is a people first company.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
8	Emcor Services Aircond	Exact match	Smyrna, GA, United StatesHQ recorded Oct 10, 2026	201-500	184 contacts →
	Exact match “Backed by 80 years of experience, the more than 300 associates at EMCOR Services Aircond design and deliver comprehensive, timely, and cost effective HVAC and building system…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
9	Hill York	Exact match	Dania Beach, FL, United StatesHQ recorded Oct 10, 2026	201-500	168 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 · Oct 10, 2026 · View company records in RevenueBase
10	Dandelion Energy	Exact match	Mount Kisco, NY, United StatesHQ recorded Oct 10, 2026	51-200	130 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 · Oct 10, 2026 · View company records in RevenueBase
11	Powers Building Hvac, Controls, And Service	Exact match	North Little Rock, AR, United StatesHQ recorded Oct 10, 2026	201-500	115 contacts →
	Exact match “Our goal at Powers is to make your buildings productive, comfortable, and efficient to operate.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
12	Lawyer Mechanical Services	Exact match	Las Vegas, NV, United StatesHQ recorded Oct 10, 2026	51-200	107 contacts →
	Exact match “Lawyer Mechanical Services (LMS) creates and maintains comfort.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
13	Brightcore Energy	Exact match	Armonk, NY, United StatesHQ recorded Oct 10, 2026	51-200	103 contacts →
	Exact match “Brightcore Energy is a leading renewable energy solutions provider serving commercial, institutional, and government clients.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
14	Encon Heating & A C	Exact match	Stratford, CT, United StatesHQ recorded Oct 10, 2026	201-500	99 contacts →
	Exact match “ENCON Heating & A/C provides engineering, installation, and maintenance of HVAC systems for both commercial and custom residential applications.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
15	Casa Mechanical Services	Exact match	Round Rock, TX, United StatesHQ recorded Oct 10, 2026	51-200	89 contacts →
	Exact match “CASA Mechanical is owned and operated by the W.G.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
16	AIR Mechanical INC	Exact match	Ham Lake, MN, United StatesHQ recorded Oct 10, 2026	51-200	85 contacts →
	Exact match “Creating Custom Comfort since 1985!” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
17	Enertech Global, LLC	Exact match	Greenville, IL, United StatesHQ recorded Oct 10, 2026	51-200	76 contacts →
	Exact match “Enertech Global is a leading manufacturer and visionary in the geothermal heating and cooling industry.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
18	Energy 1	Exact match	Bozeman, MT, United StatesHQ recorded Oct 10, 2026	201-500	75 contacts →
	Exact match “Energy 1 designs and installs state-of-the-art Mechanical, Electrical, and Plumbing systems that utilize renewable technologies and deliver efficiency, elegance, and legacies our…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
19	Thermal Resource Solutions, A Coolsys Company	Exact match	Kernersville, NC, United StatesHQ recorded Oct 10, 2026	51-200	69 contacts →
	Exact match “Thermal Resource Solutions specializes in complex, custom, and energy-efficient mechanical and plumbing systems.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
20	Emcor Services MSI	Exact match	Orlando, FL, United StatesHQ recorded Oct 10, 2026	51-200	66 contacts →
	Exact match “EMCOR Services MSI is one of the region’s largest and most respected, award winning commercial HVAC service operations, a trusted member of our industry and community for over 46…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
21	ARC Mechanical	Exact match	Wilmington, MA, United StatesHQ recorded Oct 10, 2026	51-200	63 contacts →
	Exact match “Founded in 1996, ARC Mechanical offers a full range of commercial and industrial HVAC/R services, including 24/7 emergency response.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
22	Page Mechanical Group, LLC	Exact match	Fort Myers, FL, United StatesHQ recorded Oct 10, 2026	51-200	62 contacts →
	Exact match “ABOUT US Page Mechanical Group has been Serving the Construction Industry in Southwest Florida since 1985.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
23	Roscoe Brown, INC	Exact match	Murfreesboro, TN, United StatesHQ recorded Oct 10, 2026	51-200	61 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
24	Mechanical Systems Company, LLC	Exact match	Memphis, TN, United StatesHQ recorded Oct 10, 2026	51-200	59 contacts →
	Exact match “Mechanical Systems Company LLC is a fully licensed Mechanical and Plumbing contractor who focuses on working with our commercial and industrial customers on design-build…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
25	Maynard	Exact match	Nashville, TN, United StatesHQ recorded Oct 10, 2026	51-200	54 contacts →
	Exact match “Maynard is a company with one focus: to be the community leader in climate solutions for Middle Tennessee.” Recorded in the RevenueBase company graph · Oct 10, 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 “commercial geothermal contractors”. 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 972 commercial geothermal contractors based in the United States

See the full list, filter by size, metro and specialty, and access 3,573 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Commercial geothermal contractors based in the United States at a glance

As of Oct 10, 2026

35.9%Verified-email coverage

10.2Average contacts per company

11-50Median size (employees)

1.0%Largest-city concentration · Houston

Oct 10, 2026Page data refreshed

Companies by employee count

1-10

464

11-50

396

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 972 companies.

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.
What qualifies: Company records associated with the United States whose business descriptions match “commercial geothermal contractors” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 3,573 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 10, 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.

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 “commercial geothermal contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many commercial geothermal contractors are there based in the United States?

RevenueBase identified 972 company matches for commercial geothermal contractors associated with the United States 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?

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

Which city has the most commercial geothermal contractors?

Houston leads with 10 company records, followed by Tulsa (9) and New York (7).

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 3,573 professional contacts with verified work emails tracked across these 972 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 10, 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.