Company lists · Data refreshed September 2026

Top 25 Hvac design software companies based in the United States

Name: Hvac design software companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 865 companies tracked

RevenueBase identified 865 hvac design software companies headquartered in the United States as of September 2026 and tracks 16,264 professional contacts across them, including 6,621 with verified work emails. Houston is the largest hub.

This list covers hvac design software companies headquartered in the 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 28, 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 28, 2026 86% judged on-target in blind review

865Companies

16,264Contacts tracked

6,621Verified emails

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The 25 largest hvac design software companies based in the United States

Ranked by team size

Top 25 of 865 hvac design software companies based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to hvac design software companies: 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	Aaon, INC	Strong evidence	Tulsa, OK, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,208 contacts →
	Strong evidence “Driving the industry forward through the design, manufacturing, and rigorous testing of premium HVAC equipment.” Source: RevenueBase Database · checked Sep 28, 2026
2	Texas Airsystems	Partial evidence	Irving, TX, United StatesHQ checked Sep 28, 2026	201-500	523 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
3	Pe-Services	Indirect evidence	Lebanon, OH, United StatesHQ checked Sep 28, 2026	n/a	455 contacts →
	Indirect evidence “PE-Services provides engineering for your success.” Source: RevenueBase Database · checked Sep 28, 2026
4	United Mechanical	Strong evidence	San Jose, CA, United StatesHQ checked Sep 28, 2026	201-500	346 contacts →
	Strong evidence “United Mechanical specializes in HVAC and Plumbing systems design, construction, retrofit, repair, and 24/7 emergency service for commercial and industrial properties throughout…” Source: RevenueBase Database · checked Sep 28, 2026
5	Havtech	Partial evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	201-500	333 contacts →
	Partial evidence “Havtech delivers innovative commercial and industrial HVAC solutions across Maryland, Washington, D.C, Virginia, Pennsylvania, and West Virginia.” Source: RevenueBase Database · checked Sep 28, 2026
6	Boland	Partial evidence	Gaithersburg, MD, United StatesHQ checked Sep 28, 2026	201-500	323 contacts →
	Partial evidence “Boland is the leading commercial HVAC systems, services, and building energy solutions provider in the DC metro area.” Source: RevenueBase Database · checked Sep 28, 2026
7	Nailor Industries, INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	316 contacts →
	Indirect evidence “Nailor Industries, Inc, operating under Nailor International Group, is a privately held, family-owned company with headquarters located in Houston, TX.” Source: RevenueBase Database · checked Sep 28, 2026
8	Xnrgy Climate Systems	Indirect evidence	Mesa, AZ, United StatesHQ checked Sep 28, 2026	501-1,000	279 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 28, 2026
9	Energy Air, INC	Indirect evidence	Orlando, FL, United StatesHQ checked Sep 28, 2026	201-500	213 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
10	Alliance AIR Products	Strong evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	184 contacts →
	Strong 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 28, 2026
11	Micrometl Corporation	Partial evidence	Indianapolis, IN, United StatesHQ checked Sep 28, 2026	201-500	180 contacts →
	Partial evidence “MicroMetl is a leader in manufacturing commercial HVAC accessories with over a half century of information and expertise.” Source: RevenueBase Database · checked Sep 28, 2026
12	Trane AIR Conditioning	Indirect evidence	Us, United StatesHQ checked Sep 28, 2026	1,001-5,000	164 contacts →
	Indirect evidence “Trane, the world leader in creating and sustaining safe, comfortable and energy efficient environments - improves the performance of homes and buildings around the world.” Source: RevenueBase Database · checked Sep 28, 2026
13	RED DOT Corporation	Indirect evidence	Memphis, TN, United StatesHQ checked Sep 28, 2026	201-500	148 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
14	Varitec Solutions	Partial evidence	Phoenix, AZ, United StatesHQ checked Sep 28, 2026	201-500	146 contacts →
	Partial evidence “Varitec, a member of the DAIKIN group, is a leader in the engineering, developing, and installing of large-scale, energy-efficient HVAC systems for commercial buildings.” Source: RevenueBase Database · checked Sep 28, 2026
15	Motili	Partial evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	51-200	135 contacts →
	Partial evidence “Motili offers scalable turnkey HVAC technology, products, and solutions for residential and commercial properties large and small, across the United States.” Source: RevenueBase Database · checked Sep 28, 2026
16	Airreps	Strong evidence	Bellevue, WA, United StatesHQ checked Sep 28, 2026	51-200	134 contacts →
	Strong evidence “AirReps offers distinct advantages in solving challenging problems that often arise in HVAC design and installation projects.” Source: RevenueBase Database · checked Sep 28, 2026
17	CCI Mechanical, INC	Indirect evidence	Salt Lake City, UT, United StatesHQ checked Sep 28, 2026	201-500	133 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
18	Addison Hvac	Partial evidence	Orlando, FL, United StatesHQ checked Sep 28, 2026	201-500	127 contacts →
	Partial evidence “Addison is a leading supplier of HVAC cooling and dehumidification equipment for commercial and industrial applications with extensive experience in treating ventilation air.” Source: RevenueBase Database · checked Sep 28, 2026
19	Miller Industries, LLC	Indirect evidence	Fenton, MI, United StatesHQ checked Sep 28, 2026	201-500	121 contacts →
	Indirect evidence “Miller Industries, LLC is comprised of Flex Air, Miller Fabricated Systems, Mi Service Group, Miller Industries Representatives, and Fusion Cooling.” Source: RevenueBase Database · checked Sep 28, 2026
20	The K Company, INC	Indirect evidence	Akron, OH, United StatesHQ checked Sep 28, 2026	201-500	120 contacts →
	Indirect evidence “Since 1972, The K Company has been setting the standard in commercial, residential and industrial heating, air conditioning, ventilation and refrigeration systems.” Source: RevenueBase Database · checked Sep 28, 2026
21	AIR Control Systems	Partial evidence	Ontario, CA, United StatesHQ checked Sep 28, 2026	201-500	117 contacts →
	Partial evidence “Your Comfort Is Our Passion™ For decades, there has been one name in commercial HVAC synonymous with quality, expertise, and the highest levels of customer service: Air Control…” Source: RevenueBase Database · checked Sep 28, 2026
22	Custom AIR Products & Services, INC	Strong evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	201-500	114 contacts →
	Strong evidence “Custom Air Products & Services, Inc.(CAPS), an AirX Climate Solutions company, is a full-service HVAC company that specializes in the design, construction, installation…” Source: RevenueBase Database · checked Sep 28, 2026
23	Cambridge AIR Solutions	Indirect evidence	Chesterfield, MO, United StatesHQ checked Sep 28, 2026	51-200	112 contacts →
	Indirect evidence “We help manufacturing and warehousing leaders create healthy work environments for their hard-working people.” Source: RevenueBase Database · checked Sep 28, 2026
24	Lawyer Mechanical Services	Indirect evidence	Las Vegas, NV, United StatesHQ checked Sep 28, 2026	51-200	110 contacts →
	Indirect evidence “Lawyer Mechanical Services (LMS) creates and maintains comfort.” Source: RevenueBase Database · checked Sep 28, 2026
25	ACIS	Partial evidence	Mckinney, TX, United StatesHQ checked Sep 28, 2026	201-500	108 contacts →
	Partial evidence “Air-Conditioning Innovative Solutions serves Dallas, Fort Worth, Houston and Austin with commercial HVAC services.” Source: RevenueBase Database · checked Sep 28, 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 design software companies. 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 design software companies.
Partial evidence: Its own public description names part of hvac design software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hvac design software companies. 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 865 hvac design software companies based in the United States

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Hvac design software companies based in the United States at a glance

As of Sep 28, 2026

40.7%Verified-email coverage

18.8Average contacts per company

11-50Median size (employees)

2.2%Largest-city concentration · Houston

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

337

11-50

301

51-200

166

201-500

501-1,000

1,001-5,000

10001+

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 865 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 design software companies, 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 the United States whose own description of what they do matches “hvac design software companies”. 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 design software companies), 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 design software companies, and records with no verified work email. Companies headquartered outside United States 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, 6,621 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 28, 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.

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 design software companies, 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 design software companies are there based in the United States?

RevenueBase identified 865 hvac design software companies headquartered in the 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?

Aaon, INC, headquartered in Tulsa, tops this list with the largest team on record.

Which city has the most hvac design software companies?

Houston leads with 19 headquartered companies, followed by New York (17) and Charlotte (10).

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 6,621 verified decision-maker contacts tracked across these 865 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 28, 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.