Company lists · Data refreshed November 2026

Top 25 Hvac system qualification companies based in the United States

RevenueBase identified 5,041 company matches for hvac system qualification companies associated with the United States as of November 2026 and tracks 38,707 professional contacts across them, including 11,930 with verified work emails. Houston is the largest hub.

This list covers company matches for hvac system qualification 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 November 6, 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 Nov 6, 2026 How this list was built
5,041Companies
38,707Contacts tracked
11,930Verified emails
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The 25 largest hvac system qualification companies based in the United States

Ranked by team size
Top 25 of 5,041 company matches for hvac system qualification companies based in the United States, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchTulsa, TX, United StatesHQ recorded Nov 6, 20261,001-5,0001,350 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
2Exact matchIrving, TX, United StatesHQ recorded Nov 6, 2026201-500583 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
3Exact matchGreensboro, TN, United StatesHQ recorded Nov 6, 20261,001-5,000469 contacts →

Exact match

“Since 1947, Hoffman & Hoffman, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchGreensboro, NC, United StatesHQ recorded Nov 6, 2026501-1,000358 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
5Exact matchBrea, CA, United StatesHQ recorded Nov 6, 2026201-500252 contacts →

Exact match

“Service Champions is the premier plumbing, heating and air conditioning company in Southern California, serving residential homeowners in all of Orange County, and parts of LA…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchRockville, MD, United StatesHQ recorded Nov 6, 2026201-500251 contacts →

Exact match

“Shapiro and Duncan is a full service Plumbing and HVAC construction company based in Rockville, Maryland since 1976.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchColumbus, TX, United StatesHQ recorded Nov 6, 20261,001-5,000249 contacts →

Exact match

“Airtron has developed itself into one of the leading heating, ventilation, and air conditioning (HVAC) providers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchFort Lauderdale, FL, United StatesHQ recorded Nov 6, 202610001+240 contacts →

Exact match

“Lennox National Account Services (Lennox NAS) is the leading HVAC commercial service company with technicians located nationwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchOrlando, FL, United StatesHQ recorded Nov 6, 2026201-500223 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchNew York, NY, United StatesHQ recorded Nov 6, 20261,001-5,000210 contacts →

Exact match

“Ambient is a national collective of HVAC design and implementation firms, each entity esteemed in their respective regions with decades of experience.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchFlint, MI, United StatesHQ recorded Nov 6, 2026201-500195 contacts →

Exact match

“Founded in 1928, Goyette Mechanical is an industry leader in construction and design-build projects throughout the United States and one of the largest plumbing and HVAC…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchRochester, NY, United StatesHQ recorded Nov 6, 2026501-1,000193 contacts →

Exact match

“Isaac Heating and Air Conditioning has been family-owned and operated in Rochester since 1945.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchLaurel, CA, United StatesHQ recorded Nov 6, 2026501-1,000175 contacts →

Exact match

“AMS is one of the nation’s leading providers of commercial heating, ventilation, and air conditioning (HVAC) maintenance, repair, replacement, and new equipment installation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchLynnwood, WA, United StatesHQ recorded Nov 6, 2026n/a173 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchMyrtle Beach, SC, United StatesHQ recorded Nov 6, 202651-200166 contacts →

Exact match

“We believe in… excellence and heart.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchMount Prospect, United StatesHQ recorded Nov 6, 2026n/a155 contacts →

Exact match

“Welcome to ESCO, your gateway to the dynamic world of HVACR and building science, where innovation and knowledge shape the industry's future.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchAnaheim, CA, United StatesHQ recorded Nov 6, 2026201-500140 contacts →

Exact match

“Geary Pacific is a Customer Service Company that also happens to be in the HVAC Distribution business.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchFullerton, CA, United StatesHQ recorded Nov 6, 202651-200138 contacts →

Exact match

“WE'RE IN THE BUSINESS OF COOL A Dynamic History of Innovation and Collaboration Since its inception in 1977, C&L Refrigeration has been a family owned and operated company serving…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchRichardson, TX, United StatesHQ recorded Nov 6, 202651-200135 contacts →

Exact match

“Engineered Air Balance is the leading authority in total system balancing, building commissioning, and critical environment certifications at the forefront of industry standards…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchAkron, OH, United StatesHQ recorded Nov 6, 2026201-500126 contacts →

Exact match

“Since 1972, The K Company has been setting the standard in commercial, residential and industrial heating, air conditioning, ventilation and refrigeration systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchCincinnati, OH, United StatesHQ recorded Nov 6, 202651-200124 contacts →

Exact match

“National HVACR Solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchHouston, TX, United StatesHQ recorded Nov 6, 2026201-500121 contacts →

Exact match

“Custom Air Products & Services, Inc.(CAPS), an AirX Climate Solutions company, is a full-service HVAC company that specializes in the design, construction, installation…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchWhippany, NJ, United StatesHQ recorded Nov 6, 2026501-1,000118 contacts →

Exact match

“At Air Group, we are New Jersey’s premier full-service HVAC, plumbing, and electrical company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchMckinney, TX, United StatesHQ recorded Nov 6, 2026201-500115 contacts →

Exact match

“Air-Conditioning Innovative Solutions serves Dallas, Fort Worth, Houston and Austin with commercial HVAC services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchSurfside Beach, SC, United StatesHQ recorded Nov 6, 2026201-500114 contacts →

Exact match

“Carolina Cool offers the most comprehensive service and most highly trained technicians to make your life comfortable.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 5,041 hvac system qualification companies based in the United States

See the full list, filter by size, metro and specialty, and access 11,930 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Hvac system qualification companies based in the United States at a glance

As of Nov 6, 2026
30.8%Verified-email coverage
7.7Average contacts per company
1-10Median size (employees)
1.8%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
2,543
11-50
1,917
51-200
432
201-500
51
501-1,000
10
1,001-5,000
6
5,001-10,000
1
10001+
1

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 5,041 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 system qualification 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 11,930 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.

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 system qualification companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many hvac system qualification companies are there based in the United States?

RevenueBase identified 5,041 company matches for hvac system qualification companies associated with the United States 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?

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

Which city has the most hvac system qualification companies?

Houston leads with 89 company records, followed by New York (66) and San Antonio (38).

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 11,930 professional contacts with verified work emails tracked across these 5,041 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.