Company lists · Data refreshed September 2026

Top 25 Emergency hvac service companies worldwide

Name: Emergency hvac service companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 29,920 companies tracked

RevenueBase identified 29,920 emergency hvac service companies worldwide as of September 2026 and tracks 231,182 professional contacts across them, including 57,783 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers emergency hvac service companies worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026. Country and city lists for emergency hvac service companies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

29,920Companies

231,182Contacts tracked

57,783Verified emails

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The 25 largest emergency hvac service companies worldwide

Ranked by team size

Top 25 of 29,920 emergency hvac service companies worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to emergency hvac service companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Blue Star Limited	Indirect evidence	Mumbai, IndiaHQ checked Sep 19, 2026	1,001-5,000	6,621 contacts →
	Indirect evidence “Blue Star Limited is India’s leading air conditioning and commercial refrigeration company with over eight decades of experience in providing expert cooling solutions.” Source: RevenueBase Database · checked Sep 19, 2026
2	American Residential Services	Indirect evidence	Memphis, TN, United StatesHQ checked Sep 19, 2026	5,001-10,000	1,882 contacts →
	Indirect evidence “American Residential Services (ARS®/Rescue Rooter®) is one of the nation’s largest providers of heating, air conditioning, indoor air quality, plumbing, drain cleaning…” Source: RevenueBase Database · checked Sep 19, 2026
3	Service Experts	Partial evidence	Richardson, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,502 contacts →
	Partial evidence “Service Experts is North America's leading HVAC, Plumbing & Electrical company with 75+ locations nationwide.” Source: RevenueBase Database · checked Sep 19, 2026
4	Comfort Systems USA	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	10001+	1,330 contacts →
	Indirect evidence “Comfort Systems USA \| Quality People.” Source: RevenueBase Database · checked Sep 19, 2026
5	Bravida Danmark A S	Indirect evidence	Brøndby, DenmarkHQ checked Sep 19, 2026	1,001-5,000	1,298 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 19, 2026
6	LEE Company	Indirect evidence	Franklin, TN, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,019 contacts →
	Indirect evidence “Since 1944, we’ve been family-owned and family-focused, built on values that last and a mission that matters.” Source: RevenueBase Database · checked Sep 19, 2026
7	Ventec S.A	Indirect evidence	Casablanca, MoroccoHQ checked Sep 19, 2026	1,001-5,000	959 contacts →
	Indirect evidence “La Société Ventec a été créée au Maroc en 1949 par Monsieur Albert MARQUET Président Directeur Général de Ventec en France.” Source: RevenueBase Database · checked Sep 19, 2026
8	MCI SAS	Indirect evidence	Carquefou, FranceHQ checked Sep 19, 2026	1,001-5,000	943 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 19, 2026
9	Coolsys	Indirect evidence	Brea, CA, United StatesHQ checked Sep 19, 2026	1,001-5,000	750 contacts →
	Indirect evidence “CoolSys solves the most complex challenges in refrigeration, air conditioning, heating, engineering, and energy management.” Source: RevenueBase Database · checked Sep 19, 2026
10	HTS Engineering	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	1,001-5,000	714 contacts →
	Indirect evidence “Your success is our success.” Source: RevenueBase Database · checked Sep 19, 2026
11	Concepcion-Carrier AIR Conditioning Company Ccac	Indirect evidence	Alabang, PhilippinesHQ checked Sep 19, 2026	501-1,000	670 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
12	Climate Pros, LLC	Partial evidence	Glendale Heights, IL, United StatesHQ checked Sep 19, 2026	1,001-5,000	554 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
13	Deem, LLC	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 19, 2026	1,001-5,000	539 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 19, 2026
14	ONE Hour Heating & AIR Conditioning	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 19, 2026	1,001-5,000	526 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 19, 2026
15	Texas Airsystems	Partial evidence	Irving, TX, United StatesHQ checked Sep 19, 2026	201-500	523 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
16	Carrier India	Indirect evidence	Gurgaon, IndiaHQ checked Sep 19, 2026	501-1,000	471 contacts →
	Indirect evidence “Founded by Dr.” Source: RevenueBase Database · checked Sep 19, 2026
17	Horizon Services, LLC	Indirect evidence	Wilmington, DE, United StatesHQ checked Sep 19, 2026	501-1,000	448 contacts →
	Indirect evidence “Horizon Services is the premier heating, air conditioning, plumbing, drain cleaning and sewer services company in Delaware (New Castle County & Kent County), Pennsylvania…” Source: RevenueBase Database · checked Sep 19, 2026
18	Hoffman & Hoffman, INC	Indirect evidence	Greensboro, NC, United StatesHQ checked Sep 19, 2026	1,001-5,000	445 contacts →
	Indirect evidence “Since 1947, Hoffman & Hoffman, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
19	Heating Cooling	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 19, 2026	501-1,000	436 contacts →
	Indirect evidence “Desde 1974, a Heating & Cooling atua no segmento de engenharia de instalação de Sistemas de Ar-Condicionado, Ventilação e Exaustão Mecânica, com mais de 2.500 projetos executados.” Source: RevenueBase Database · checked Sep 19, 2026
20	Heinen & Hopman	Indirect evidence	Bunschoten-spakenburg, United StatesHQ checked Sep 19, 2026	1,001-5,000	429 contacts →
	Indirect evidence “Heinen & Hopman Engineering was founded in 1965 as a family business in the heart of Holland, Spakenburg.” Source: RevenueBase Database · checked Sep 19, 2026
21	Source Refrigeration & Hvac	Indirect evidence	Brea, CA, United StatesHQ checked Sep 19, 2026	1,001-5,000	420 contacts →
	Indirect evidence “For up-to-date information, please see the CoolSys profile page.” Source: RevenueBase Database · checked Sep 19, 2026
22	John W. Danforth Company	Indirect evidence	Tonawanda, NY, United StatesHQ checked Sep 19, 2026	501-1,000	415 contacts →
	Indirect evidence “We are powered by the best people in the industry.” Source: RevenueBase Database · checked Sep 19, 2026
23	Carmichael Engineering LTD	Partial evidence	Montreal, QC, CanadaHQ checked Sep 19, 2026	501-1,000	400 contacts →
	Partial evidence “Dedicated to Excellence For over a century, Carmichael has been delivering expert solutions in HVAC, industrial refrigeration, automation, combustion, energy, and scientific…” Source: RevenueBase Database · checked Sep 19, 2026
24	Strada Services	Indirect evidence	Sanford, FL, United StatesHQ checked Sep 19, 2026	1,001-5,000	391 contacts →
	Indirect evidence “Strada Services is a full service electrical, security, and air conditioning contracting company servicing residential, commercial, and industrial customers in Florida and in the…” Source: RevenueBase Database · checked Sep 19, 2026
25	TWC Services, INC	Indirect evidence	Des Moines, IA, United StatesHQ checked Sep 19, 2026	501-1,000	371 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: emergency hvac service companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names emergency hvac service companies.
Partial evidence: Its own public description names part of emergency hvac service companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name emergency hvac service companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 29,920 emergency hvac service companies worldwide

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Emergency hvac service companies worldwide at a glance

As of Sep 19, 2026

25.0%Verified-email coverage

7.7Average contacts per company

11-50Median size (employees)

0.8%Largest-city concentration · Sao Paulo

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

14,234

11-50

11,406

51-200

3,056

201-500

527

501-1,000

120

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among emergency hvac service companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for emergency hvac service companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “emergency hvac service companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names emergency hvac service companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among emergency hvac service companies, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 57,783 across the full list. 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 September 19, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Emergency hvac service companies by location

101 lists · largest first

Every Emergency hvac service 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 Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names emergency hvac service companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many emergency hvac service companies are there worldwide?

RevenueBase identified 29,920 emergency hvac service companies worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Blue Star Limited, headquartered in Mumbai, tops this list with the largest team on record.

Which country has the most emergency hvac service companies?

The United States leads with 13,217 companies, followed by France (1,592) and the United Kingdom (1,476). Every emergency hvac service companies list by country and city is linked on this page.

Which city has the most emergency hvac service companies?

Sao Paulo leads with 248 headquartered companies, followed by Houston (179) and London (154).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 57,783 verified decision-maker contacts tracked across these 29,920 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 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 Smart Search, 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.