Company lists · Data refreshed October 2026

Top 25 Hvac and energy efficiency companies worldwide

Name: Hvac and energy efficiency companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 14, 2026 41,188 companies tracked

RevenueBase identified 41,188 company matches for hvac and energy efficiency companies worldwide as of October 2026 and tracks 501,487 professional contacts across them, including 136,277 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for hvac and energy efficiency companies 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 October 14, 2026. Country and city lists for hvac and energy efficiency companies 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 Oct 14, 2026 How this list was built

41,188Companies

501,487Contacts tracked

136,277Verified emails

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The 25 largest hvac and energy efficiency companies worldwide

Ranked by team size

Top 25 of 41,188 company matches for hvac and energy efficiency companies worldwide, 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	Johnson Controls	Exact match	Cork, IrelandHQ recorded Oct 14, 2026	10001+	54,046 contacts →
	Exact match “Johnson Controls is a global leader in thermal management, mission-critical building systems, energy efficiency and decarbonization.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
2	Equans Belux	Exact match	Brussels, BelgiumHQ recorded Oct 14, 2026	5,001-10,000	5,347 contacts →
	Exact match “What if you could use your talent to contribute to the great challenges of tomorrow?” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
3	Caverion	Exact match	Vantaa, FinlandHQ recorded Oct 14, 2026	10001+	4,548 contacts →
	Exact match “About Caverion Caverion is an expert for smart and sustainable built environments, enabling performance and people’s well-being.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
4	Daikin Applied Americas	Exact match	Minneapolis, MN, United StatesHQ recorded Oct 14, 2026	10001+	4,352 contacts →
	Exact match “Daikin Applied delivers superior air quality and energy efficiency to every solution with innovation in advanced technology, IoT, and next generation compressors.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
5	Enova By Veolia	Exact match	Dubai, United Arab EmiratesHQ recorded Oct 14, 2026	5,001-10,000	4,030 contacts →
	Exact match “Enova is the regional leader in integrated energy and multi-technical services, delivering comprehensive services to its clients.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
6	Southland Industries	Exact match	Garden Grove, CA, United StatesHQ recorded Oct 14, 2026	10001+	3,010 contacts →
	Exact match “As one of the nation's largest building systems experts, Southland Industries provides innovative, practical results for your engineering, construction, service, and energy needs.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
7	Johnstone Supply	Exact match	Portland, OR, United StatesHQ recorded Oct 14, 2026	1,001-5,000	2,721 contacts →
	Exact match “Making it easier for HVACR contractors to do business.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
8	Acco Engineered Systems	Exact match	Pasadena, CA, United StatesHQ recorded Oct 14, 2026	5,001-10,000	2,573 contacts →
	Exact match “Since 1934, owners and builders have selected ACCO Engineered Systems to design, install, and maintain more than mechanical projects.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
9	Goodman AIR Conditioning & Heating	Exact match	Waller, TX, United StatesHQ recorded Oct 14, 2026	10001+	2,429 contacts →
	Exact match “Since 1982, Goodman Manufacturing has had one goal: provide customers with reliable, high-quality, energy-efficient, and affordable indoor comfort products.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
10	Viessmann Climate Solutions	Exact match	Allendorf, GermanyHQ recorded Oct 14, 2026	10001+	2,235 contacts →
	Exact match “Founded in 1917 as a heating technology manufacturer, today Viessmann Climate Solutions is a leading global provider of sustainable climate (heating, cooling, water and air…” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
11	Clearesult	Exact match	Austin, TX, United StatesHQ recorded Oct 14, 2026	1,001-5,000	2,206 contacts →
	Exact match “CLEAResult is the largest provider of energy efficiency, energy transition and energy sustainability services in North America.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
12	Reliance Home Comfort	Exact match	Toronto, ON, CanadaHQ recorded Oct 14, 2026	1,001-5,000	1,602 contacts →
	Exact match “As a leader in home services and energy efficient solutions for over 60 years, Reliance Home Comfort® (Reliance) is committed to being the Destination of Choice by delivering…” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
13	Modern Niagara	Exact match	Kanata, ON, CanadaHQ recorded Oct 14, 2026	1,001-5,000	1,585 contacts →
	Exact match “We build for life.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
14	Emcor Group, INC	Exact match	Norwalk, CT, United StatesHQ recorded Oct 14, 2026	10001+	1,443 contacts →
	Exact match “A Fortune 500® company and a member of the S&P 500, EMCOR Group, Inc.(NYSE: EME) is a leader in mechanical and electrical construction, industrial and energy infrastructure, and…” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
15	Ainsworth INC	Exact match	Toronto, ON, CanadaHQ recorded Oct 14, 2026	1,001-5,000	1,390 contacts →
	Exact match “Our customers depend on their buildings, industrial assets, processes, and energy management, to help them meet competitive challenges.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
16	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
17	Bravida Danmark A S	Exact match	Brøndby, DenmarkHQ recorded Oct 14, 2026	1,001-5,000	1,342 contacts →
	Exact match “Bravida Danmark er blandt landets største tekniske installations- og servicevirksomheder med over medarbejdere i byer landet over, og vi er en arbejdsplads, der har plads til alle.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
18	Aaon, INC	Exact match	Tulsa, OK, United StatesHQ recorded Oct 14, 2026	1,001-5,000	1,315 contacts →
	Exact match “Driving the industry forward through the design, manufacturing, and rigorous testing of premium HVAC equipment.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
19	Danfoss Climate Solutions	Exact match	Nordborg, DenmarkHQ recorded Oct 14, 2026	10001+	1,227 contacts →
	Exact match “At Danfoss Climate Solutions, we engineer energy-efficient heating and cooling solutions to help the world get more out of less.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
20	GK	Exact match	Oslo, NorwayHQ recorded Oct 14, 2026	1,001-5,000	1,134 contacts →
	Exact match “GK er en ledende teknisk entreprenør og servicepartner.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
21	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
22	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
23	Proxiserve	Exact match	Levallois-perret, FranceHQ recorded Oct 14, 2026	1,001-5,000	984 contacts →
	Exact match “A major player in the energy transition and leader in home services, PROXISERVE provides its customers with innovative solutions enabling them to reduce their energy consumption…” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
24	Ventec S.A	Exact match	Casablanca, MoroccoHQ recorded Oct 14, 2026	1,001-5,000	971 contacts →
	Exact match “La Société Ventec a été créée au Maroc en 1949 par Monsieur Albert MARQUET Président Directeur Général de Ventec en France.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
25	MCI SAS	Exact match	Carquefou, FranceHQ recorded Oct 14, 2026	1,001-5,000	968 contacts →
	Exact match “Spécialiste du froid et la climatisation depuis 60 ans, MCI s'engage à vous offrir un grand choix de solutions et de services parfaitement adaptés à vos exigences.” 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 and 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 41,188 hvac and energy efficiency companies worldwide

See the full list, filter by size, metro and specialty, and access 136,277 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Hvac and energy efficiency companies worldwide at a glance

As of Oct 14, 2026

27.2%Verified-email coverage

12.2Average contacts per company

11-50Median size (employees)

0.8%Largest-city concentration · Sao Paulo

Oct 14, 2026Page data refreshed

Companies by employee count

1-10

19,059

11-50

15,553

51-200

4,571

201-500

936

501-1,000

261

1,001-5,000

192

5,001-10,000

10001+

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 hvac and energy efficiency companies are linked below.
What qualifies: Company records worldwide whose business descriptions match “hvac and 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. 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 136,277 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 and energy efficiency companies by location

168 lists · largest first

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

How many hvac and energy efficiency companies are there worldwide?

RevenueBase identified 41,188 company matches for hvac and energy efficiency companies worldwide 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?

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

Which country has the most hvac and energy efficiency companies?

The United States leads with 13,016 companies, followed by France (2,576) and the United Kingdom (2,018). Every hvac and energy efficiency companies list by country and city is linked on this page.

Which city has the most hvac and energy efficiency companies?

Sao Paulo leads with 321 company records, followed by London (191) and Houston (188).

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 136,277 professional contacts with verified work emails tracked across these 41,188 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.