Company lists · Data refreshed November 2026

Top 25 Hvac diagnostics companies worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 16,597 companies tracked

RevenueBase identified 16,597 company matches for hvac diagnostics companies worldwide as of November 2026 and tracks 124,071 professional contacts across them, including 31,781 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for hvac diagnostics 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 November 6, 2026. Country and city lists for hvac diagnostics 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 Nov 6, 2026 How this list was built

16,597Companies

124,071Contacts tracked

31,781Verified emails

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The 25 largest hvac diagnostics companies worldwide

Ranked by team size

Top 25 of 16,597 company matches for hvac diagnostics companies worldwide, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Bravida Danmark A S	Exact match	Brøndby, DenmarkHQ recorded Nov 6, 2026	1,001-5,000	1,385 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 · Nov 6, 2026 · View company records in RevenueBase
2	AAON	Exact match	Tulsa, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,350 contacts →
	Exact match “Driving the industry forward through the design, manufacturing, and rigorous testing of premium HVAC equipment.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Ventec S.A	Exact match	Casablanca, MoroccoHQ recorded Nov 6, 2026	1,001-5,000	1,010 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 · Nov 6, 2026 · View company records in RevenueBase
4	HTS Engineering	Exact match	Toronto, TX, CanadaHQ recorded Nov 6, 2026	1,001-5,000	748 contacts →
	Exact match “Your success is our success.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Texas Airsystems	Exact match	Irving, TX, United StatesHQ recorded Nov 6, 2026	201-500	583 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 · Nov 6, 2026 · View company records in RevenueBase
6	Climate Pros, LLC	Exact match	Glendale Heights, CA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	581 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 · Nov 6, 2026 · View company records in RevenueBase
7	ONE Hour Heating & AIR Conditioning	Exact match	Phoenix, AZ, United StatesHQ recorded Nov 6, 2026	1,001-5,000	573 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 · Nov 6, 2026 · View company records in RevenueBase
8	Heating Cooling	Exact match	Sao Paulo, BrazilHQ recorded Nov 6, 2026	501-1,000	504 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Horizon Services, LLC	Exact match	Wilmington, MD, United StatesHQ recorded Nov 6, 2026	501-1,000	472 contacts →
	Exact match “Horizon Services is the premier heating, air conditioning, plumbing, drain cleaning and sewer services company in Delaware (New Castle County & Kent County), Pennsylvania…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Hoffman & Hoffman, INC	Exact match	Greensboro, TN, United StatesHQ recorded Nov 6, 2026	1,001-5,000	469 contacts →
	Exact match “Since 1947, Hoffman & Hoffman, Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Ferroli Group	Exact match	San Bonifacio, ItalyHQ recorded Nov 6, 2026	1,001-5,000	442 contacts →
	Exact match “Feel Well.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	UAT	Exact match	United StatesHQ recorded Nov 6, 2026	201-500	436 contacts →
	Exact match “Founded in 1931, UAT is the largest Residential HVAC Corporation on the eastern seaboard.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Carmichael Engineering LTD	Exact match	Montreal, ON, CanadaHQ recorded Nov 6, 2026	501-1,000	430 contacts →
	Exact match “Dedicated to Excellence For over a century, Carmichael has been delivering expert solutions in HVAC, industrial refrigeration, automation, combustion, energy, and scientific…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Xnrgy Climate Systems	Exact match	Mesa, AZ, United StatesHQ recorded Nov 6, 2026	501-1,000	397 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 · Nov 6, 2026 · View company records in RevenueBase
15	Aire Serv Heating And AIR Conditioning	Exact match	Waco, TX, United StatesHQ recorded Nov 6, 2026	201-500	389 contacts →
	Exact match “For consumer services visit To discover more about franchise opportunities with Aire Serv® in your area visit Established in 1992, Aire Serv® is a global franchise organization…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Brady Services	Exact match	Greensboro, NC, United StatesHQ recorded Nov 6, 2026	501-1,000	358 contacts →
	Exact match “Since 1962, Brady has been committed to delivering innovative, sustainable building solutions that drive long-term success for our customers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Havtech	Exact match	Columbia, VA, United StatesHQ recorded Nov 6, 2026	201-500	351 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 · Nov 6, 2026 · View company records in RevenueBase
18	Boland	Exact match	Gaithersburg, MD, United StatesHQ recorded Nov 6, 2026	201-500	333 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 · Nov 6, 2026 · View company records in RevenueBase
19	Gustave A. Larson	Exact match	Pewaukee, MN, United StatesHQ recorded Nov 6, 2026	201-500	333 contacts →
	Exact match “Gustave A.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Goettl AIR Conditioning & Plumbing	Exact match	Las Vegas, NV, United StatesHQ recorded Nov 6, 2026	501-1,000	329 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 · Nov 6, 2026 · View company records in RevenueBase
21	Space Engineering Services LTD	Exact match	Bristol, United KingdomHQ recorded Nov 6, 2026	201-500	325 contacts →
	Exact match “Space Engineering Services is the UK’s leading provider of refrigeration, heating, ventilation and air conditioning services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Tech24	Exact match	Greenville, SC, United StatesHQ recorded Nov 6, 2026	501-1,000	302 contacts →
	Exact match “Tech 24 is the service industry leader, providing fast, complete, multi-regional repair and preventive plan solutions for commercial refrigeration, cooking, beverage and HVAC…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	VAE Group	Exact match	Darra, AustraliaHQ recorded Nov 6, 2026	201-500	291 contacts →
	Exact match “VAE engineers, constructs and manages Smarter HVAC Solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Daikin Dala	Exact match	Miami, United StatesHQ recorded Nov 6, 2026	10001+	273 contacts →
	Exact match “Daikin is a multinational and leading provider of HVAC (Heating, Ventilation, Air Conditioning and Refrigeration) solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Morris-Jenkins	Exact match	Charlotte, NC, United StatesHQ recorded Nov 6, 2026	501-1,000	258 contacts →
	Exact match “Morris-Jenkins is like family!” Recorded in the RevenueBase company graph · Nov 6, 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 diagnostics 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 16,597 hvac diagnostics companies worldwide

See the full list, filter by size, metro and specialty, and access 31,781 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Hvac diagnostics companies worldwide at a glance

As of Nov 6, 2026

25.6%Verified-email coverage

7.5Average contacts per company

1-10Median size (employees)

0.7%Largest-city concentration · Houston

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

8,226

11-50

6,210

51-200

1,403

201-500

259

501-1,000

1,001-5,000

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 diagnostics companies are linked below.
What qualifies: Company records worldwide whose business descriptions match “hvac diagnostics 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 31,781 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.

Hvac diagnostics companies by location

54 lists · largest first

Every Hvac diagnostics 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 diagnostics companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many hvac diagnostics companies are there worldwide?

RevenueBase identified 16,597 company matches for hvac diagnostics companies worldwide 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?

Bravida Danmark A S tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most hvac diagnostics companies?

The United States leads with 8,650 companies, followed by Canada (896) and France (693). Every hvac diagnostics companies list by country and city is linked on this page.

Which city has the most hvac diagnostics companies?

Houston leads with 121 company records, followed by Sao Paulo (108) and New York (88).

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 31,781 professional contacts with verified work emails tracked across these 16,597 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.

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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.