Company lists · Data refreshed November 2026

Top 25 Geothermal system maintenance services based in the United States

Name: Geothermal system maintenance services based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 3,198 companies tracked

RevenueBase identified 3,198 company matches for geothermal system maintenance services associated with the United States as of November 2026 and tracks 23,905 professional contacts across them, including 6,090 with verified work emails. Houston is the largest hub.

This list covers company matches for geothermal system maintenance services 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 November 6, 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 Nov 6, 2026 How this list was built

3,198Companies

23,905Contacts tracked

6,090Verified emails

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The 25 largest geothermal system maintenance services based in the United States

Ranked by team size

Top 25 of 3,198 company matches for geothermal system maintenance services based in the United States, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Horizon Services, LLC	Exact match	Wilmington, MD, United StatesHQ recorded Nov 6, 2026	501-1,000	472 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
2	ANY Hour Services	Exact match	Orem, UT, United StatesHQ recorded Nov 6, 2026	201-500	265 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
3	Morris-Jenkins	Exact match	Charlotte, NC, United StatesHQ recorded Nov 6, 2026	501-1,000	258 contacts →
	Exact match “Morris-Jenkins is like family!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Airtron Heating & AIR Conditioning	Exact match	Columbus, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	249 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
5	Reliable Heating & AIR	Exact match	Kennesaw, GA, United StatesHQ recorded Nov 6, 2026	201-500	245 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
6	Haller Enterprises	Exact match	Lititz, PA, United StatesHQ recorded Nov 6, 2026	201-500	204 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
7	Peterman Brothers Heating, Cooling & Plumbing	Exact match	Greenwood, IN, United StatesHQ recorded Nov 6, 2026	501-1,000	173 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
8	ONE Hour Heating & AIR Conditioning	Exact match	Myrtle Beach, SC, United StatesHQ recorded Nov 6, 2026	51-200	166 contacts →
	Exact match “We believe in… excellence and heart.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Hoffmann Brothers	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	501-1,000	161 contacts →
	Exact match “About Hoffmann Brothers We are on a mission to Improve Life in Every Home.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	A.B. MAY Heating, A C, Plumbing & Electrical	Exact match	Kansas City, MO, United StatesHQ recorded Nov 6, 2026	201-500	144 contacts →
	Exact match “Since 1959, A.B.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Paschal Air, Plumbing & Electric	Exact match	Springdale, AR, United StatesHQ recorded Nov 6, 2026	201-500	142 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
12	Woodfin	Exact match	Richmond, VA, United StatesHQ recorded Nov 6, 2026	501-1,000	131 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
13	Dandelion Energy	Exact match	Mount Kisco, NY, United StatesHQ recorded Nov 6, 2026	51-200	124 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
14	Midwest Mechanical Commercial, Industrial Hvac Mechanical Services	Exact match	Lombard, IL, United StatesHQ recorded Nov 6, 2026	51-200	115 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
15	Powers Building Hvac, Controls, And Service	Exact match	North Little Rock, MS, United StatesHQ recorded Nov 6, 2026	201-500	114 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
16	Conserv Building Services, LLC	Exact match	Largo, FL, United StatesHQ recorded Nov 6, 2026	201-500	109 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
17	IT Landes	Exact match	Harleysville, PA, United StatesHQ recorded Nov 6, 2026	51-200	101 contacts →
	Exact match “IT Landes offers a wide range of commercial and industrial mechanical services, including maintenance, on-demand service, and equipment repair and replacement.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Casteel Heating, Cooling, Plumbing & Electrical	Exact match	Marietta, GA, United StatesHQ recorded Nov 6, 2026	201-500	100 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
19	Encon Heating & A C	Exact match	Stratford, CT, United StatesHQ recorded Nov 6, 2026	201-500	93 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 · Nov 6, 2026 · View company records in RevenueBase
20	ONE Stop Cooling And Heating	Exact match	Winter Park, FL, United StatesHQ recorded Nov 6, 2026	501-1,000	93 contacts →
	Exact match “One Stop Cooling & Heating has been providing exceptional installations and service for 26 years.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	James River AIR Conditioning Company	Exact match	Richmond, VA, United StatesHQ recorded Nov 6, 2026	51-200	92 contacts →
	Exact match “James River Air Conditioning, Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Casa Mechanical Services	Exact match	Round Rock, TX, United StatesHQ recorded Nov 6, 2026	51-200	92 contacts →
	Exact match “CASA Mechanical is owned and operated by the W.G.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Genz-Ryan	Exact match	Burnsville, MN, United StatesHQ recorded Nov 6, 2026	51-200	90 contacts →
	Exact match “About Genz‑Ryan For over 75 years, Genz‑Ryan has been the Twin Cities’ premier full‑service home comfort provider-specializing in heating, cooling, plumbing, indoor air quality…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	HALCO	Exact match	Phelps, NY, United StatesHQ recorded Nov 6, 2026	51-200	89 contacts →
	Exact match “Halco is a highly accredited, national award-winning contractor that has been providing high-quality solutions to residential and commercial clients since 1984.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Lee's Air, Plumbing, Heating, & Roofing	Exact match	Fresno, CA, United StatesHQ recorded Nov 6, 2026	51-200	88 contacts →
	Exact match “Serving Fresno, CA Since 1981.” Recorded in the RevenueBase company graph · Nov 6, 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 system maintenance services”. 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 3,198 geothermal system maintenance services based in the United States

See the full list, filter by size, metro and specialty, and access 6,090 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Geothermal system maintenance services based in the United States at a glance

As of Nov 6, 2026

25.5%Verified-email coverage

7.5Average contacts per company

11-50Median size (employees)

0.8%Largest-city concentration · Houston

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

1,568

11-50

1,198

51-200

322

201-500

501-1,000

1,001-5,000

5,001-10,000

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 3,198 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 “geothermal system 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. 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 6,090 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 services by metro

Geothermal system maintenance services in San Antonio25

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

How many geothermal system maintenance services are there based in the United States?

RevenueBase identified 3,198 company matches for geothermal system maintenance services associated with the United States 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?

Horizon Services, LLC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most geothermal system maintenance services?

Houston leads with 27 company records, followed by New York (26) and San Antonio (25).

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 6,090 professional contacts with verified work emails tracked across these 3,198 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.