Company lists · Data refreshed October 2026

Top 25 Hvac and water treatment contractors worldwide

Name: Hvac and water treatment contractors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 14, 2026 36,456 companies tracked

RevenueBase identified 36,456 company matches for hvac and water treatment contractors worldwide as of October 2026 and tracks 339,534 professional contacts across them, including 91,115 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 water treatment contractors 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 water treatment contractors 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

36,456Companies

339,534Contacts tracked

91,115Verified emails

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The 25 largest hvac and water treatment contractors worldwide

Ranked by team size

Top 25 of 36,456 company matches for hvac and water treatment contractors 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	Blue Star Limited	Exact match	Mumbai, IndiaHQ recorded Oct 14, 2026	1,001-5,000	6,654 contacts →
	Exact match “Blue Star Limited is India’s leading air conditioning and commercial refrigeration company with over eight decades of experience in providing expert cooling solutions.” 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	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
4	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
5	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
6	American Residential Services	Exact match	Memphis, TN, United StatesHQ recorded Oct 14, 2026	5,001-10,000	1,948 contacts →
	Exact match “American Residential Services (ARS®/Rescue Rooter®) is one of the nation’s largest providers of heating, air conditioning, indoor air quality, plumbing, drain cleaning…” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
7	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
8	Service Experts	Exact match	Richardson, TX, United StatesHQ recorded Oct 14, 2026	1,001-5,000	1,509 contacts →
	Exact match “Service Experts is North America's leading HVAC, Plumbing & Electrical company with 75+ locations nationwide.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
9	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
10	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
11	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
12	Fawaz Group	Exact match	KuwaitHQ recorded Oct 14, 2026	1,001-5,000	1,107 contacts →
	Exact match “Welcome to FAWAZ Group official account!” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
13	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
14	LEE Company	Exact match	Franklin, TN, United StatesHQ recorded Oct 14, 2026	1,001-5,000	1,049 contacts →
	Exact match “Since 1944, we’ve been family-owned and family-focused, built on values that last and a mission that matters.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
15	Enercare INC	Exact match	Markham, ON, CanadaHQ recorded Oct 14, 2026	1,001-5,000	1,035 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
16	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
17	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
18	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
19	Bravida Norge AS	Exact match	Oslo, NorwayHQ recorded Oct 14, 2026	1,001-5,000	898 contacts →
	Exact match “Bravida gir bygninger liv.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
20	AHERN	Exact match	Fond Du Lac, WI, United StatesHQ recorded Oct 14, 2026	1,001-5,000	884 contacts →
	Exact match “Ahern is a mechanical and fire protection contractor specializing in HVAC, Plumbing, Building Controls, Sprinkler, Extinguisher & Alarm and Fabrication for construction and…” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
21	Feenstra	Exact match	Lelystad, NetherlandsHQ recorded Oct 14, 2026	1,001-5,000	789 contacts →
	Exact match “Sinds het ontstaan in 1947 is Feenstra marktleider in installatietechniek met een nationale dekking.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
22	Linc Facility Services	Exact match	United StatesHQ recorded Oct 14, 2026	1,001-5,000	740 contacts →
	Exact match “The Linc Group is an award-winning provider of integrated facilities management, HVAC and building systems services, lighting and electrical solutions, and other support services…” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
23	HTS Engineering	Exact match	Toronto, ON, CanadaHQ recorded Oct 14, 2026	1,001-5,000	733 contacts →
	Exact match “Your success is our success.” Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
24	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
25	Concepcion-Carrier AIR Conditioning Company Ccac	Exact match	Alabang, PhilippinesHQ recorded Oct 14, 2026	501-1,000	709 contacts →
	Exact match “Formed in January 1998, Concepcion-Carrier Air Conditioning Company (CCAC) brings together two leaders in the air conditioning industry: Carrier Corporation of the United States…” 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 water treatment 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 36,456 hvac and water treatment contractors worldwide

See the full list, filter by size, metro and specialty, and access 91,115 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Hvac and water treatment contractors worldwide at a glance

As of Oct 14, 2026

26.8%Verified-email coverage

9.3Average 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

16,822

11-50

13,927

51-200

3,995

201-500

756

501-1,000

196

1,001-5,000

120

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 water treatment contractors are linked below.
What qualifies: Company records worldwide whose business descriptions match “hvac and water treatment 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. 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 91,115 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 water treatment contractors by location

132 lists · largest first

Every Hvac and water treatment contractors 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 water treatment contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many hvac and water treatment contractors are there worldwide?

RevenueBase identified 36,456 company matches for hvac and water treatment contractors 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?

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

Which country has the most hvac and water treatment contractors?

The United States leads with 13,611 companies, followed by France (2,170) and the United Kingdom (1,797). Every hvac and water treatment contractors list by country and city is linked on this page.

Which city has the most hvac and water treatment contractors?

Sao Paulo leads with 303 company records, followed by Dubai (204) and Houston (178).

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 91,115 professional contacts with verified work emails tracked across these 36,456 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.