Company lists · Data refreshed November 2026

Top 25 Hvac training schools based in the United States

RevenueBase identified 614 company matches for hvac training schools associated with the United States as of November 2026 and tracks 6,518 professional contacts across them, including 1,385 with verified work emails. Phoenix is the largest hub.

This list covers company matches for hvac training schools 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
614Companies
6,518Contacts tracked
1,385Verified emails
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The 25 largest hvac training schools based in the United States

Ranked by team size
Top 25 of 614 company matches for hvac training schools 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 matchPhoenix, AZ, United StatesHQ recorded Nov 6, 20261,001-5,000573 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
2Exact 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
3Exact matchAlexandria, VA, United StatesHQ recorded Nov 6, 2026n/a205 contacts →

Exact match

“The Air Conditioning Contractors of America (ACCA) is the national association of heating, ventilation, air conditioning, and refrigeration contractors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchWichita, KS, United StatesHQ recorded Nov 6, 202651-200159 contacts →

Exact match

“Vocational Technical Education”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact 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
6Exact matchBaton Rouge, LA, United StatesHQ recorded Nov 6, 2026201-500142 contacts →

Exact match

“BCC was founded in 1987 with the goal of becoming one of the most respected and innovative Massage Therapy training centers in the nation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchPhoenix, AZ, United StatesHQ recorded Nov 6, 2026501-1,000139 contacts →

Exact match

“Founded in 2007, StrataTech Education Group is a national leader in specialized career education, dedicated to preparing students for high-demand skilled trade careers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchTulsa, OK, United StatesHQ recorded Nov 6, 2026201-500106 contacts →

Exact match

“Founded in 1949 by two welders who recognized the strong demand for skilled tradesmen in their industry, TWS is an educational institution that prepares students for welding…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchSchenectady, NY, United StatesHQ recorded Nov 6, 202651-200102 contacts →

Exact match

“Appolo Heating is a recognized leader in HVAC installation, service and sales.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchLorton, GA, United StatesHQ recorded Nov 6, 2026201-50098 contacts →

Exact match

“For over 90 years, United Air Temp has been leading the Heating, Air Conditioning, Plumbing and Electrical Industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchPoway, CA, United StatesHQ recorded Nov 6, 2026201-50090 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchNashville, TN, United StatesHQ recorded Nov 6, 202651-20079 contacts →

Exact match

“Team of HVAC Professionals: Leading & Serving the Industrial & Commercial HVAC Industry Our mission is to be the LEADER in each aspect of our business.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchAlpharetta, GA, United StatesHQ recorded Nov 6, 202651-20075 contacts →

Exact match

“Insight Partners: Revolutionizing the HVAC Industry with World-Class Solutions At Insight Partners, we are innovators, pioneers, and problem-solvers in the commercial HVAC…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchHenderson, AZ, United StatesHQ recorded Nov 6, 202611-5060 contacts →

Exact match

“At National Training Institute we offer career-focused training.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchWoodbury, NY, United StatesHQ recorded Nov 6, 202611-5059 contacts →

Exact match

“Air Stream is a leading commercial HVAC corporation, specializing in the perfection of human environments in organizations of all sizes through expert design, installation, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchFair Lawn, NJ, United StatesHQ recorded Nov 6, 202651-20056 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchCharleston, WV, United StatesHQ recorded Nov 6, 202651-20053 contacts →

Exact match

“Since 1965, Casto Technical Services, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchBroomfield, CO, United StatesHQ recorded Nov 6, 20261,001-5,00053 contacts →

Exact match

“Redstone College was founded in 1965 to offer Airframe and Powerplant training and in 1989 it expanded its curriculum to include Avionics training.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchLa Vista, NE, United StatesHQ recorded Nov 6, 202651-20050 contacts →

Exact match

“Reliable HVAC Professionals Whether you need a maintenance check or an emergency repair, we are available to handle all of your heating, cooling, and ventilation needs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchSanford, NC, United StatesHQ recorded Nov 6, 202611-5048 contacts →

Exact match

“72 Degrees Heating & Air Conditioning (officially known as TLP H&A) has been in business since 1998 and has a combined experience of 75 years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchLas Vegas, NV, United StatesHQ recorded Nov 6, 202651-20047 contacts →

Exact match

“Empowering Careers Through Hands-On Training Our institution is dedicated to equipping students with the skills needed for in-demand careers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchHercules, CA, United StatesHQ recorded Nov 6, 202651-20045 contacts →

Exact match

“City Mechanical is the brainstorm of Russell L.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchGlendale, AZ, United StatesHQ recorded Nov 6, 202651-20040 contacts →

Exact match

“Arizona Automotive Institute (AAI), located in Glendale, AZ, offers training programs in Automotive Service Technician, CDL Training: Class A Tractor Trailer, Combination Welding…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchSchaumburg, IL, United StatesHQ recorded Nov 6, 202611-5040 contacts →

Exact match

“Since 1933, Refrigeration Service Engineers Society (RSES) has been a leader in training and education for professional HVACR technicians and contractors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchPhoenix, AZ, United StatesHQ recorded Nov 6, 202611-5038 contacts →

Exact match

“The Refrigeration School, Inc.(RSI) has trained individuals to become professional, entry-level Heating, Ventilation, Air Conditioning and Refrigeration (HVAC/R) technicians since…”

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

Showing 25 of 614 hvac training schools based in the United States

See the full list, filter by size, metro and specialty, and access 1,385 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Hvac training schools based in the United States at a glance

As of Nov 6, 2026
21.2%Verified-email coverage
10.6Average contacts per company
11-50Median size (employees)
2.0%Largest-city concentration · Phoenix
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
293
11-50
234
51-200
59
201-500
11
501-1,000
5
1,001-5,000
4

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 614 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 training schools” 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 1,385 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 training schools”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many hvac training schools are there based in the United States?

RevenueBase identified 614 company matches for hvac training schools 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?

ONE Hour Heating & AIR Conditioning tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most hvac training schools?

Phoenix leads with 12 company records, followed by Houston (11) and Virginia Beach (8).

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 1,385 professional contacts with verified work emails tracked across these 614 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.