Company lists · Data refreshed October 2026

Top 25 Hvac energy efficiency companies based in the United States

Name: Hvac energy efficiency companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 14, 2026 8,255 companies tracked

RevenueBase identified 8,255 company matches for hvac energy efficiency companies associated with the United States as of October 2026 and tracks 93,863 professional contacts across them, including 33,215 with verified work emails. Houston is the largest hub.

This list covers company matches for hvac energy efficiency companies 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 14, 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 14, 2026 How this list was built

8,255Companies

93,863Contacts tracked

33,215Verified emails

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The 25 largest hvac energy efficiency companies based in the United States

Ranked by team size

Top 25 of 8,255 company matches for hvac energy efficiency companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 14, 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	Comfort Systems USA	Exact match	Houston, TX, United StatesHQ recorded Oct 14, 2026	10001+	1,354 contacts →
	Exact match “Comfort Systems USA \| Quality People.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
2	Mckenney's, INC	Exact match	Atlanta, GA, United StatesHQ recorded Oct 14, 2026	1,001-5,000	1,088 contacts →
	Exact match “McKenney’s is the Southeast’s most trusted name in facility construction, operation and maintenance.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
3	Cmta, INC	Exact match	Louisville, KY, United StatesHQ recorded Oct 14, 2026	501-1,000	1,016 contacts →
	Exact match “CMTA is part of Legence, a Nasdaq Listed company.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
4	PAE	Exact match	Portland, OR, United StatesHQ recorded Oct 14, 2026	201-500	835 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 · Oct 14, 2026 · View company records in RevenueBase
5	Coolsys	Exact match	Brea, CA, United StatesHQ recorded Oct 14, 2026	1,001-5,000	711 contacts →
	Exact match “CoolSys solves the most complex challenges in refrigeration, air conditioning, heating, engineering, and energy management.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
6	Albireo Energy	Exact match	Edison, NJ, United StatesHQ recorded Oct 14, 2026	1,001-5,000	658 contacts →
	Exact match “Albireo Energy is a leading independent building controls and energy services provider recognized by customers for creating intelligent, high-performance buildings.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
7	F.E. Moran Group Of Companies	Exact match	Northbrook, IL, United StatesHQ recorded Oct 14, 2026	1,001-5,000	592 contacts →
	Exact match “At F.E.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
8	Texas Airsystems	Exact match	Irving, TX, United StatesHQ recorded Oct 14, 2026	201-500	580 contacts →
	Exact match “In business for over 45 years, Texas AirSystems has grown to be recognized as one of the premier partners for commercial HVAC solutions in Texas, boasting over 500 associates…” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
9	Climate Pros, LLC	Exact match	Glendale Heights, IL, United StatesHQ recorded Oct 14, 2026	1,001-5,000	562 contacts →
	Exact match “At Climate Pros, LLC, we are a leading commercial refrigeration and HVAC company specializing in the design, construction, and servicing of refrigeration systems across thousands…” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
10	ONE Hour Heating & AIR Conditioning	Exact match	Phoenix, AZ, United StatesHQ recorded Oct 14, 2026	1,001-5,000	556 contacts →
	Exact match “When homeowners want a reliable heater or air conditioning system that they don’t have to think about, they call One Hour Heating & Air Conditioning.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
11	Deem, LLC	Exact match	Indianapolis, IN, United StatesHQ recorded Oct 14, 2026	1,001-5,000	537 contacts →
	Exact match “DEEM, LLC is a mechanical and electrical company centrally located in Fishers, Indiana with satellite offices throughout the Midwest down to the southeastern United States.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
12	Therma	Exact match	San Jose, CA, United StatesHQ recorded Oct 14, 2026	1,001-5,000	507 contacts →
	Exact match “Therma is part of Legence, a Blackstone portfolio company, specially created to be an Energy Transition Accelerator™.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
13	MSS Solutions, LLC	Exact match	Charlotte, NC, United StatesHQ recorded Oct 14, 2026	501-1,000	489 contacts →
	Exact match “Since 1996, MSS has made thousands of facilities more efficient, comfortable, secure and reliable for owners, operators and occupiers across the Carolinas and throughout North…” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
14	Pe-Services	Exact match	Lebanon, OH, United StatesHQ recorded Oct 14, 2026	n/a	459 contacts →
	Exact match “PE-Services provides engineering for your success.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
15	Hoffman & Hoffman, INC	Exact match	Greensboro, NC, United StatesHQ recorded Oct 14, 2026	1,001-5,000	458 contacts →
	Exact match “Since 1947, Hoffman & Hoffman, Inc.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
16	Source Refrigeration & Hvac	Exact match	Brea, CA, United StatesHQ recorded Oct 14, 2026	1,001-5,000	421 contacts →
	Exact match “For up-to-date information, please see the CoolSys profile page.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
17	John W. Danforth Company	Exact match	Tonawanda, NY, United StatesHQ recorded Oct 14, 2026	501-1,000	410 contacts →
	Exact match “We are powered by the best people in the industry.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
18	Xnrgy Climate Systems	Exact match	Mesa, AZ, United StatesHQ recorded Oct 14, 2026	501-1,000	370 contacts →
	Exact match “Shaping the Future of Sustainable Climate Control At XNRGY Climate Systems, we are on a mission to revolutionize climate control with a focus on sustainability and innovation.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
19	Homeworks Energy, INC	Exact match	Medford, MA, United StatesHQ recorded Oct 14, 2026	201-500	369 contacts →
	Exact match “At HomeWorks Energy, our mission is simple, literally: Energy Efficiency, Simplified.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
20	AIR Systems, INC	Exact match	San Jose, CA, United StatesHQ recorded Oct 14, 2026	201-500	359 contacts →
	Exact match “Whether building quality work environments, valuable relationships or community ties, Air Systems never cuts corners.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
21	United Mechanical	Exact match	San Jose, CA, United StatesHQ recorded Oct 14, 2026	201-500	349 contacts →
	Exact match “United Mechanical specializes in HVAC and Plumbing systems design, construction, retrofit, repair, and 24/7 emergency service for commercial and industrial properties throughout…” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
22	Havtech	Exact match	Columbia, MD, United StatesHQ recorded Oct 14, 2026	201-500	342 contacts →
	Exact match “Havtech delivers innovative commercial and industrial HVAC solutions across Maryland, Washington, D.C, Virginia, Pennsylvania, and West Virginia.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
23	Mtech Mechanical	Exact match	Westminster, CO, United StatesHQ recorded Oct 14, 2026	501-1,000	338 contacts →
	Exact match “Looking for a new opportunity with a growing organization that shares your values?” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
24	Boland	Exact match	Gaithersburg, MD, United StatesHQ recorded Oct 14, 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 14, 2026 · View company records in RevenueBase
25	Goettl AIR Conditioning & Plumbing	Exact match	Las Vegas, NV, United StatesHQ recorded Oct 14, 2026	501-1,000	324 contacts →
	Exact match “At Goettl, our mission is to "Goettlize the Nation" by setting the industry standard in HVAC and plumbing services.” Recorded in the RevenueBase company graph · Oct 14, 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 “hvac energy efficiency companies”. 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 8,255 hvac energy efficiency companies based in the United States

See the full list, filter by size, metro and specialty, and access 33,215 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Hvac energy efficiency companies based in the United States at a glance

As of Oct 14, 2026

35.4%Verified-email coverage

11.4Average contacts per company

11-50Median size (employees)

1.5%Largest-city concentration · Houston

Oct 14, 2026Page data refreshed

Companies by employee count

1-10

3,738

11-50

3,261

51-200

944

201-500

165

501-1,000

1,001-5,000

5,001-10,000

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 8,255 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 “hvac energy efficiency companies” 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 33,215 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 14, 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.

Hvac energy efficiency companies by metro

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 “hvac energy efficiency companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many hvac energy efficiency companies are there based in the United States?

RevenueBase identified 8,255 company matches for hvac energy efficiency companies 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?

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

Which city has the most hvac energy efficiency companies?

Houston leads with 124 company records, followed by New York (117) and Phoenix (61).

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 33,215 professional contacts with verified work emails tracked across these 8,255 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 14, 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.