Company lists · Data refreshed November 2026

Top 25 Geothermal system design engineers based in the United States

RevenueBase identified 533 company matches for geothermal system design engineers associated with the United States as of November 2026 and tracks 5,866 professional contacts across them, including 2,255 with verified work emails. Houston is the largest hub.

This list covers company matches for geothermal system design engineers 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
533Companies
5,866Contacts tracked
2,255Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest geothermal system design engineers based in the United States

Ranked by team size
Top 25 of 533 company matches for geothermal system design engineers 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchPortland, NV, United StatesHQ recorded Nov 6, 2026201-500843 contacts →

Exact match

“PAE provides mechanical and electrical engineering design, technology system design, energy modeling and analysis, and more.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchLakewood, CO, United StatesHQ recorded Nov 6, 2026201-500370 contacts →

Exact match

“NEI provides professional expertise and design engineering services for all aspects of power systems engineering.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact 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
4Exact 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
5Exact 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
6Exact matchStratford, CT, United StatesHQ recorded Nov 6, 2026201-50093 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
7Exact matchBozeman, WY, United StatesHQ recorded Nov 6, 2026201-50076 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 · Nov 6, 2026 · View company records in RevenueBase
8Exact matchGreenville, IL, United StatesHQ recorded Nov 6, 202651-20076 contacts →

Exact match

“Enertech Global is a leading manufacturer and visionary in the geothermal heating and cooling industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchMurfreesboro, TN, United StatesHQ recorded Nov 6, 202651-20063 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchLexington, KY, United StatesHQ recorded Nov 6, 202651-20061 contacts →

Exact match

“We are people-first engineers providing mechanical, electrical, plumbing, & fire suppression design since 1981.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchCatonsville, VA, United StatesHQ recorded Nov 6, 202651-20061 contacts →

Exact match

“MEC², a CoolSys Company, is an established and well-respected engineering and construction firm serving the Baltimore-Washington area.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchNew Brighton, MN, United StatesHQ recorded Nov 6, 202611-5055 contacts →

Exact match

“Darcy Solutions is on a mission to put Geothermal Everywhere.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchLaurel, PA, United StatesHQ recorded Nov 6, 202651-20055 contacts →

Exact match

“We at Allied Well Drilling are a full service commercial and residential gethermal heating/cooling system installer, specializing in vertically drilled closed loop systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchNashville, TN, United StatesHQ recorded Nov 6, 202651-20054 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 · Nov 6, 2026 · View company records in RevenueBase
15Exact matchWheat Ridge, CO, United StatesHQ recorded Nov 6, 202611-5052 contacts →

Exact match

“As Denver HVAC specialists and geothermal system experts, we believe in doing things right!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchWillow Street, PA, United StatesHQ recorded Nov 6, 202651-20051 contacts →

Exact match

“JK Mechanical provides Smart Energy Solutions including Geothermal, Heating, Solar, Electrical, & More in Central Pennsylvania and Maryland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchNorthwood, OH, United StatesHQ recorded Nov 6, 202651-20050 contacts →

Exact match

“We are a full service HVAC contractor employing a highly skilled team of professionals trained in all aspects from proactive preventive maintenance through design/build and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchGardena, CA, United StatesHQ recorded Nov 6, 202651-20050 contacts →

Exact match

“Xcel Mechanical Systems is an award-winning engineering and construction firm specializing in commercial and industrial HVAC, plumbing, and process piping systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchMaryland Heights, MO, United StatesHQ recorded Nov 6, 202651-20049 contacts →

Exact match

“At NDBS, we are not only focused on the needs of our clients but also the needs of our clients’ customers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchAndover, MA, United StatesHQ recorded Nov 6, 202611-5048 contacts →

Exact match

“B2Q Associates is an independent consulting engineering firm specializing in engineering, design, and implementation of facility energy efficiency, commissioning, and CH & P…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchManassas Park, VA, United StatesHQ recorded Nov 6, 202611-5046 contacts →

Exact match

“Heating, Ventilating, & Air Conditioning for Multi-Family and Commercial projects.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchJenks, United StatesHQ recorded Nov 6, 202611-5044 contacts →

Exact match

“Air Comfort, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchNewton, MA, United StatesHQ recorded Nov 6, 202651-20039 contacts →

Exact match

“Forge makes home comfort simple and sustainable with energy-efficient heat pump installations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchAuburn, ME, United StatesHQ recorded Nov 6, 202651-20039 contacts →

Exact match

“Since 1981, Thayer, LLC has been providing HVAC services and energy solutions to commercial, industrial, and institutional buildings throughout Maine and southern New Hampshire.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchTraverse City, MI, United StatesHQ recorded Nov 6, 202651-20036 contacts →

Exact match

“Team Bob’s Heating Cooling Plumbing has been a commercial and residential HVAC and plumbing service and installation company serving Northern Michigan for nearly 40 years.”

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

Showing 25 of 533 geothermal system design engineers based in the United States

See the full list, filter by size, metro and specialty, and access 2,255 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Geothermal system design engineers based in the United States at a glance

As of Nov 6, 2026
38.4%Verified-email coverage
11.0Average contacts per company
11-50Median size (employees)
1.3%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
264
11-50
212
51-200
47
201-500
9
501-1,000
1

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 533 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 design engineers” 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 2,255 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.

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

How many geothermal system design engineers are there based in the United States?

RevenueBase identified 533 company matches for geothermal system design engineers 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?

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

Which city has the most geothermal system design engineers?

Houston leads with 7 company records, followed by Denver (6) and Oklahoma City (6).

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 2,255 professional contacts with verified work emails tracked across these 533 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.

Ready to reach these companies? Verified emails and direct dials for all 533 geothermal system design engineers based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

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.