Company lists · Data refreshed September 2026

Top 21 Hvac engineering firms based in San Jose, United States

Name: Hvac engineering firms based in San Jose, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 41 companies tracked

RevenueBase identified 41 company matches for hvac engineering firms associated with San Jose, United States as of September 2026 and tracks 2,267 professional contacts across them, including 1,075 with verified work emails. Across the United States, Houston is the largest hub for this category (203 companies); San Jose has 41.

This list covers company matches for hvac engineering firms associated with San Jose, 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 September 16, 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 Sep 16, 2026 How this list was built

41Companies

2,267Contacts tracked

1,075Verified emails

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The 21 largest hvac engineering firms based in San Jose, United States

Ranked by team size

Top 21 of 41 company matches for hvac engineering firms based in San Jose, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 16, 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	Therma	Exact match	San Jose, CA, United StatesHQ recorded Sep 16, 2026	1,001-5,000	482 contacts →
	Exact match “Therma is part of Legence, a Blackstone portfolio company, specially created to be an Energy Transition Accelerator™.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
2	AIR Systems, INC	Exact match	San Jose, CA, United StatesHQ recorded Sep 16, 2026	201-500	348 contacts →
	Exact match “Whether building quality work environments, valuable relationships or community ties, Air Systems never cuts corners.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
3	United Mechanical	Exact match	San Jose, CA, United StatesHQ recorded Sep 16, 2026	201-500	346 contacts →
	Exact match “United Mechanical specializes in HVAC and Plumbing systems design, construction, retrofit, repair, and 24/7 emergency service for commercial and industrial properties throughout…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
4	SVM	Exact match	San Jose, CA, United StatesHQ recorded Sep 16, 2026	501-1,000	293 contacts →
	Exact match “SVM is a full service mechanical contractor, specializing in design-build commercial HVAC, plumbing, and service / maintenance, including 24-hour emergency services.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
5	Critchfield Mechanical, INC	Exact match	San Jose, CA, United StatesHQ recorded Sep 16, 2026	201-500	218 contacts →
	Exact match “Since 1977, Critchfield Mechanical, Inc.(CMI) has been one of the finest mechanical contractors in California, specializing in the design, fabrication and installation of heating…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
6	Legence	Exact match	San Jose, CA, United StatesHQ recorded Sep 16, 2026	10001+	133 contacts →
	Exact match “We are a leading provider of engineering, consulting, installation and maintenance services for mission-critical systems in buildings.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
7	Icom Mechanical INC	Exact match	San Jose, CA, United StatesHQ recorded Sep 16, 2026	51-200	70 contacts →
	Exact match “Founded in 1981 in San Jose, California, ICOM has provided The Silicon Valley and other important technology communities with the highest level of products and services for nearly…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
8	ALL Temperature Service AIR Conditioning, Inc. ATS	Exact match	San Jose, CA, United StatesHQ recorded Sep 16, 2026	51-200	66 contacts →
	Exact match “As a leading mechanical contracting company with over four decades of experience, All Temperature Service (ATS) Air Conditioning, Inc.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
9	Automated Solutions Group	Exact match	San Jose, CA, United StatesHQ recorded Sep 16, 2026	11-50	47 contacts →
	Exact match “ASG strives to be the trusted partner to our customers, to adopt proven technologies and to enhance the lives of our team members.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
10	J&j AIR Conditioning, INC	Exact match	San Jose, CA, United StatesHQ recorded Sep 16, 2026	51-200	32 contacts →
	Exact match “J&J Air Conditioning began in 1978 with only two service technicians offering basic HVAC maintenance and repair.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
11	Aquinas Hvac	Exact match	San Jose, CA, United StatesHQ recorded Sep 16, 2026	11-50	20 contacts →
	Exact match “About Aquinas HVAC is a family owned full-service Heating, Ventilation and Air Conditioning contractor.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
12	O.C. Mcdonald CO	Exact match	San Jose, CA, United StatesHQ recorded Sep 16, 2026	51-200	18 contacts →
	Exact match “Over A Century of Quality Service, Repair & Innovative Installation In 1906, Oren Charles McDonald founded O.C.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
13	A-1 Heating And Cooling, INC	Exact match	San Jose, CA, United StatesHQ recorded Sep 16, 2026	11-50	17 contacts →
	Exact match “Our Mission Provide clients with the highest quality service at fair and competitive prices.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
14	Comfort International INC	Exact match	San Jose, CA, United StatesHQ recorded Sep 16, 2026	11-50	15 contacts →
	Exact match “Comfort International “CI”, is exclusively focused on achieving peak efficiencies with existing commercial buildings.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
15	Irbis AIR Plumbing Electrical	Exact match	San Jose, CA, United StatesHQ recorded Sep 16, 2026	51-200	12 contacts →
	Exact match “About IRBIS HVAC: Redefining Comfort Through Innovation IRBIS HVAC goes beyond conventional HVAC services.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
16	AIR Sharks	Exact match	San Jose, CA, United StatesHQ recorded Sep 16, 2026	11-50	11 contacts →
	Exact match “Residential Heating, Ventilation & Air Conditioning” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
17	West Coast Mechanical	Exact match	San Jose, CA, United StatesHQ recorded Sep 16, 2026	1-10	10 contacts →
	Exact match “Full-Service Comercial HVAC Contractor” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
18	West BAY Mechanical INC	Exact match	San Jose, CA, United StatesHQ recorded Sep 16, 2026	11-50	9 contacts →
	Exact match “West Bay Mechanical provides heating, air conditioning and sheet metal.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
19	BAY Area Mechanical Service	Exact match	San Jose, CA, United StatesHQ recorded Sep 16, 2026	11-50	3 contacts →
	Exact match “Bay Area Mechanical provides commercial HVAC mechanical services specializing in systems, service, and maintenance for your Bay Area business.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
20	Martinico And Sons INC	Exact match	San Jose, CA, United StatesHQ recorded Sep 16, 2026	1-10	1 contacts →
	Exact match “Heating and Air Conditioning has been the foundation of our business for over 60 years.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
21	72 Degrees Cooper Brothers, INC	Exact match	San Jose, CA, United StatesHQ recorded Sep 16, 2026	1-10	1 contacts →
	Exact match “Bringing comfort to your home!” Recorded in the RevenueBase company graph · Sep 16, 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 engineering firms”. 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 21 of 41 hvac engineering firms based in San Jose, United States

See the full list, filter by size, metro and specialty, and access 1,075 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Hvac engineering firms based in San Jose, United States at a glance

As of Sep 16, 2026

47.4%Verified-email coverage

55.3Average contacts per company

11-50Median size (employees)

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole United States list rather than for San Jose, so it is reported there. Company counts and contact totals on this page are exact for San Jose, over 41 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 San Jose, United States whose business descriptions match “hvac engineering firms” 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 1,075 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 September 16, 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 engineering firms by metro in the United States

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 engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many hvac engineering firms are there based in San Jose, United States?

RevenueBase identified 41 company matches for hvac engineering firms associated with San Jose, United States as of September 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?

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

Which city in the United States has the most hvac engineering firms?

Houston leads the United States with 203 company records, followed by New York (199) and San Antonio (95). San Jose has 41.

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 1,075 professional contacts with verified work emails tracked across these 41 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 September 16, 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.