Company lists · Data refreshed September 2026

Top 25 Hvac engineering firms based in San Diego, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 72 companies tracked

RevenueBase identified 72 hvac engineering firms headquartered in San Diego, United States as of September 2026 and tracks 1,114 professional contacts across them, including 401 with verified work emails. Houston is the largest hub.

This list covers hvac engineering firms headquartered in San Diego, United States, 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 16, 2026.

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 16, 2026 86% judged on-target in blind review

72Companies

1,114Contacts tracked

401Verified emails

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The 25 largest hvac engineering firms based in San Diego, United States

Ranked by team size

Top 25 of 72 hvac engineering firms based in San Diego, United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to hvac engineering firms: 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	Alliance AIR Products	Partial evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	1,001-5,000	184 contacts →
	Partial evidence “Established in 2004, Alliance Air Products designs and manufactures custom HVAC solutions to meet any specification, including the most demanding commercial and industrial…” Source: RevenueBase Database · checked Sep 16, 2026
2	Heating And Cooling Supply	Partial evidence	San Diego, United StatesHQ checked Sep 16, 2026	51-200	140 contacts →
	Partial evidence “Since 1960, Heating and Cooling Supply has developed and flourished into the HVAC distribution powerhouse it is today.” Source: RevenueBase Database · checked Sep 16, 2026
3	MA Engineers, INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	51-200	94 contacts →
	Indirect evidence “MA Engineers delivers innovative, sustainable, energy-saving design solutions.” Source: RevenueBase Database · checked Sep 16, 2026
4	Jackson & Blanc	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	201-500	91 contacts →
	Indirect evidence “Jackson & Blanc is Southern California's pre-eminent mechanical systems specialist, serving the Commercial, Industrial and Institutional markets.” Source: RevenueBase Database · checked Sep 16, 2026
5	Mcparlane & Associates, INC	Partial evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	11-50	57 contacts →
	Partial evidence “McParlane & Associates, Inc.(MPA) is a full-service mechanical, electrical, and plumbing (MEP) engineering consulting firm who delivers an integrated approach in cost-effective…” Source: RevenueBase Database · checked Sep 16, 2026
6	Randall Lamb	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	51-200	50 contacts →
	Indirect evidence “Teamwork, communication, and experience form the foundation of all successful projects.” Source: RevenueBase Database · checked Sep 16, 2026
7	Pmpe Consultants INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	51-200	47 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
8	Elen Consulting, INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	11-50	39 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
9	SC Engineers	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	11-50	32 contacts →
	Indirect evidence “Founded in San Diego, California, in 2004, SC Engineers is an industry leader in mechanical, electrical, and plumbing (MEP) planning and design, energy efficiency, building…” Source: RevenueBase Database · checked Sep 16, 2026
10	Greater SAN Diego AIR Conditioning	Partial evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	51-200	29 contacts →
	Partial evidence “Greater San Diego Air Conditioning Company (GSDAC) has been providing high quality HVAC services since 1980.” Source: RevenueBase Database · checked Sep 16, 2026
11	BSE Engineering, INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	11-50	29 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
12	SAN Diego Mechanical Energy	Partial evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	11-50	10 contacts →
	Partial evidence “San Diego Mechanical Energy designs, installs, and services all types of HVAC equipment including chillers, boilers, air handlers, cooling towers, pumps, packaged units, variable…” Source: RevenueBase Database · checked Sep 16, 2026
13	Ivey Engineering, INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	11-50	10 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
14	Essential Heating And AIR Conditioning INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	11-50	10 contacts →
	Indirect evidence “The mission of Essential Heating and Air Conditioning is to provide superior customer service, provide a workplace where employees feel safe and are proud to be a part of the team…” Source: RevenueBase Database · checked Sep 16, 2026
15	Guthrie And Sons Heating And AIR Conditioning	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	11-50	10 contacts →
	Indirect evidence “Here at Guthrie and Sons sustainable heating and air conditioning we are passionate about providing San Diego with the best in heating and air conditioning repair service, sales…” Source: RevenueBase Database · checked Sep 16, 2026
16	Airmaxx Heating And AIR Conditioning, SAN Diego	Partial evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	11-50	10 contacts →
	Partial evidence “When you’re searching for the right HVAC company to help you with your heating and cooling needs, it’s always comforting to find specialists who are dedicated to your city.” Source: RevenueBase Database · checked Sep 16, 2026
17	Akela Engineering & Consulting	Partial evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	51-200	9 contacts →
	Partial evidence “Akela Engineering and Consulting is a full-service Mechanical, Electrical, and Plumbing firm providing engineering and consulting services to the construction industry in…” Source: RevenueBase Database · checked Sep 16, 2026
18	Jmc3 Consulting, INC	Strong evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	1-10	6 contacts →
	Strong evidence “JMc3 is a mechanical engineering firm dedicated to providing industry-leading HVAC, Plumbing, Medical Gas, and Energy designs for the life science, healthcare, and manufacturing…” Source: RevenueBase Database · checked Sep 16, 2026
19	FM & Hvac Recruitment INC	Partial evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	1-10	5 contacts →
	Partial evidence “FM & HVAC Recruitment Inc are specialist recruiters for the Facilities Management and HVAC sectors across the United States.” Source: RevenueBase Database · checked Sep 16, 2026
20	National Ventilating And Equipment Company	Partial evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	1-10	5 contacts →
	Partial evidence “National Ventilating and Equipment Co is a HVAC distribution company based out of San Diego, California.” Source: RevenueBase Database · checked Sep 16, 2026
21	AC Sure Plan INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	1-10	4 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
22	Bioair Mechanical	Partial evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	11-50	3 contacts →
	Partial evidence “We specialize in mechanical HVAC and plumbing systems for biotech facilities and environments, in order to support progressive and innovative solutions in the life science…” Source: RevenueBase Database · checked Sep 16, 2026
23	Misean INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	1-10	3 contacts →
	Indirect evidence “Misean, Inc.” Source: RevenueBase Database · checked Sep 16, 2026
24	HVAKR	Partial evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	1-10	3 contacts →
	Partial evidence “A cloud-based HVAC design platform, HVAKR radically reduces the cost and duration of developing mechanical designs by consolidating the process into one, user-friendly environment.” Source: RevenueBase Database · checked Sep 16, 2026
25	That Hvac GUY	Partial evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	11-50	3 contacts →
	Partial evidence “That HVAC Guy is a commercial Heating and Air Conditioning service, maintenance, and installation company servicing San Diego County since 1992.” Source: RevenueBase Database · checked Sep 16, 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: hvac engineering firms. 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 hvac engineering firms.
Partial evidence: Its own public description names part of hvac engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hvac engineering firms. 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 72 hvac engineering firms based in San Diego, United States

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

As of Sep 16, 2026

36.0%Verified-email coverage

15.5Average contacts per company

11-50Median size (employees)

281.9%Largest-city concentration · Houston

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for San Diego, so it is reported there. Company counts and contact totals on this page are exact for San Diego, over 72 companies.

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 hvac engineering firms, 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.
What qualifies: Companies headquartered in San Diego, United States whose own description of what they do matches “hvac engineering firms”. 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 hvac engineering firms), 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 hvac engineering firms, and records with no verified work email. Companies headquartered outside San Diego are excluded even when they keep an office there.
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, 401 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 16, 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.

Hvac engineering firms by metro in the United States

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 hvac engineering firms, 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 hvac engineering firms are there based in San Diego, United States?

RevenueBase identified 72 hvac engineering firms headquartered in San Diego, United States 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?

Alliance AIR Products, headquartered in San Diego, tops this list with the largest team on record.

Which city has the most hvac engineering firms?

Houston leads with 203 headquartered companies, followed by New York (199) and San Antonio (95).

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 401 verified decision-maker contacts tracked across these 72 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 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 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.