Company lists · Data refreshed September 2026

Top 25 Environmental control unit manufacturers based in the United States

Name: Environmental control unit manufacturers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 1,218 companies tracked

RevenueBase identified 1,218 environmental control unit manufacturers headquartered in the United States as of September 2026 and tracks 35,450 professional contacts across them, including 12,349 with verified work emails. Houston is the largest hub.

This list covers environmental control unit manufacturers 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 30, 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 30, 2026 86% judged on-target in blind review

1,218Companies

35,450Contacts tracked

12,349Verified emails

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The 25 largest environmental control unit manufacturers based in the United States

Ranked by team size

Top 25 of 1,218 environmental control unit manufacturers based in the United States, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to environmental control unit manufacturers: 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	Daikin Applied Americas	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 30, 2026	10001+	4,204 contacts →
	Indirect evidence “Daikin Applied delivers superior air quality and energy efficiency to every solution with innovation in advanced technology, IoT, and next generation compressors.” Source: RevenueBase Database · checked Sep 30, 2026
2	Aaon, INC	Indirect evidence	Tulsa, OK, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,208 contacts →
	Indirect evidence “Driving the industry forward through the design, manufacturing, and rigorous testing of premium HVAC equipment.” Source: RevenueBase Database · checked Sep 30, 2026
3	Greenheck	Partial evidence	Schofield, WI, United StatesHQ checked Sep 30, 2026	1,001-5,000	975 contacts →
	Partial evidence “Greenheck is the global leader in engineering and manufacturing air movement, conditioning, and control equipment for nonresidential buildings.” Source: RevenueBase Database · checked Sep 30, 2026
4	Baltimore Aircoil Company	Indirect evidence	Jessup, MD, United StatesHQ checked Sep 30, 2026	1,001-5,000	906 contacts →
	Indirect evidence “At BAC, we don’t just build cooling systems, we shape the future of sustainable solutions.” Source: RevenueBase Database · checked Sep 30, 2026
5	Greenheck Group	Partial evidence	Schofield, WI, United StatesHQ checked Sep 30, 2026	5,001-10,000	783 contacts →
	Partial evidence “Greenheck Group is made up of team members who serve as leaders in air movement, control, and conditioning equipment, providing solutions across a range of applications and…” Source: RevenueBase Database · checked Sep 30, 2026
6	Aprilaire	Indirect evidence	Madison, WI, United StatesHQ checked Sep 30, 2026	501-1,000	474 contacts →
	Indirect evidence “Headquartered in Madison, Wisconsin with production facilities in both Madison and Poynette, AprilAire has been providing a variety of Indoor Air Quality solutions and technology…” Source: RevenueBase Database · checked Sep 30, 2026
7	Hoffman & Hoffman, INC	Indirect evidence	Greensboro, NC, United StatesHQ checked Sep 30, 2026	1,001-5,000	445 contacts →
	Indirect evidence “Since 1947, Hoffman & Hoffman, Inc.” Source: RevenueBase Database · checked Sep 30, 2026
8	Source Refrigeration & Hvac	Indirect evidence	Brea, CA, United StatesHQ checked Sep 30, 2026	1,001-5,000	420 contacts →
	Indirect evidence “For up-to-date information, please see the CoolSys profile page.” Source: RevenueBase Database · checked Sep 30, 2026
9	Havtech	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 30, 2026	201-500	333 contacts →
	Indirect evidence “Havtech delivers innovative commercial and industrial HVAC solutions across Maryland, Washington, D.C, Virginia, Pennsylvania, and West Virginia.” Source: RevenueBase Database · checked Sep 30, 2026
10	Boland	Indirect evidence	Gaithersburg, MD, United StatesHQ checked Sep 30, 2026	201-500	323 contacts →
	Indirect evidence “Boland is the leading commercial HVAC systems, services, and building energy solutions provider in the DC metro area.” Source: RevenueBase Database · checked Sep 30, 2026
11	Nailor Industries, INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 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 30, 2026
12	Xnrgy Climate Systems	Partial evidence	Mesa, AZ, United StatesHQ checked Sep 30, 2026	501-1,000	279 contacts →
	Partial 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 30, 2026
13	Hobbs & Associates, INC	Indirect evidence	Norfolk, VA, United StatesHQ checked Sep 30, 2026	201-500	260 contacts →
	Indirect evidence “Hobbs & Associates is a leading independent HVAC provider serving Virginia, Washington DC, Maryland, and Tennessee, with partners across the Southeast.” Source: RevenueBase Database · checked Sep 30, 2026
14	Stulz USA	Indirect evidence	Frederick, MD, United StatesHQ checked Sep 30, 2026	501-1,000	231 contacts →
	Indirect evidence “STULZ Air Technology Systems, Inc.(STULZ USA) is the technology leader, providing cooling solutions and services for mission critical applications through the design and…” Source: RevenueBase Database · checked Sep 30, 2026
15	Mobile AIR & Power Rentals	Indirect evidence	Tampa, FL, United StatesHQ checked Sep 30, 2026	201-500	223 contacts →
	Indirect evidence “Mobile Air & Power Rentals provides a range of temporary equipment such as air conditioners, chillers, heaters, dehumidifiers, and HEPA filtration equipment.” Source: RevenueBase Database · checked Sep 30, 2026
16	Tolin Mechanical Systems	Indirect evidence	Denver, CO, United StatesHQ checked Sep 30, 2026	201-500	220 contacts →
	Indirect evidence “Tolin Mechanical is a Leading Energy & Commercial HVAC Services Company.” Source: RevenueBase Database · checked Sep 30, 2026
17	Friedrich AIR Conditioning	Indirect evidence	San Antonio, TX, United StatesHQ checked Sep 30, 2026	201-500	216 contacts →
	Indirect evidence “In business since 1883, Friedrich is committed to helping customers find the right cooling solution for virtually any need.” Source: RevenueBase Database · checked Sep 30, 2026
18	Trane Midwest	Indirect evidence	Fenton, MO, United StatesHQ checked Sep 30, 2026	201-500	216 contacts →
	Indirect evidence “Trane® is a world leader in air conditioning systems, services and solutions.” Source: RevenueBase Database · checked Sep 30, 2026
19	Airtron Heating & AIR Conditioning	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 30, 2026	1,001-5,000	214 contacts →
	Indirect evidence “Airtron has developed itself into one of the leading heating, ventilation, and air conditioning (HVAC) providers.” Source: RevenueBase Database · checked Sep 30, 2026
20	Revcor	Partial evidence	Carpentersville, IL, United StatesHQ checked Sep 30, 2026	501-1,000	187 contacts →
	Partial evidence “Since 1946 Revcor has been a staple company in the design and manufacture of revolutionary airflow solutions that efficiently, quietly and reliably deliver the air that improves…” Source: RevenueBase Database · checked Sep 30, 2026
21	BASX	Indirect evidence	Redmond, OR, United StatesHQ checked Sep 30, 2026	501-1,000	187 contacts →
	Indirect evidence “BASX is an industry leader in the manufacturing of high efficiency data center cooling solutions, cleanroom systems, custom HVAC systems and modular solutions.” Source: RevenueBase Database · checked Sep 30, 2026
22	Total Mechanical	Partial evidence	Pewaukee, WI, United StatesHQ checked Sep 30, 2026	201-500	186 contacts →
	Partial evidence “TOTAL Mechanical is a single-source mechanical contractor, specializing in the design, engineering, manufacturing, installation, maintenance and repair of commercial, industrial…” Source: RevenueBase Database · checked Sep 30, 2026
23	Alliance AIR Products	Partial evidence	San Diego, CA, United StatesHQ checked Sep 30, 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 30, 2026
24	Maxair Mechanical	Indirect evidence	Marietta, GA, United StatesHQ checked Sep 30, 2026	201-500	183 contacts →
	Indirect evidence “MAXAIR Mechanical, founded in 1988, is a people first company.” Source: RevenueBase Database · checked Sep 30, 2026
25	Micrometl Corporation	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 30, 2026	201-500	180 contacts →
	Indirect evidence “MicroMetl is a leader in manufacturing commercial HVAC accessories with over a half century of information and expertise.” Source: RevenueBase Database · checked Sep 30, 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: environmental control unit manufacturers. 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 environmental control unit manufacturers.
Partial evidence: Its own public description names part of environmental control unit manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental control unit manufacturers. 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 1,218 environmental control unit manufacturers based in the United States

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Environmental control unit manufacturers based in the United States at a glance

As of Sep 30, 2026

34.8%Verified-email coverage

29.1Average contacts per company

11-50Median size (employees)

2.0%Largest-city concentration · Houston

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

446

11-50

446

51-200

225

201-500

501-1,000

1,001-5,000

5,001-10,000

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 1,218 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 environmental control unit manufacturers, 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 “environmental control unit manufacturers”. 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 environmental control unit manufacturers), 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 environmental control unit manufacturers, 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, 12,349 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 30, 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 environmental control unit manufacturers, 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 environmental control unit manufacturers are there based in the United States?

RevenueBase identified 1,218 environmental control unit manufacturers 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?

Daikin Applied Americas, headquartered in Minneapolis, tops this list with the largest team on record.

Which city has the most environmental control unit manufacturers?

Houston leads with 24 headquartered companies, followed by New York (18) and Indianapolis (12).

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 12,349 verified decision-maker contacts tracked across these 1,218 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 30, 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.