Company lists · Data refreshed September 2026

Top 25 Air heater manufacturers based in the United States

Name: Air heater 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 363 companies tracked

RevenueBase identified 363 air heater manufacturers headquartered in the United States as of September 2026 and tracks 13,533 professional contacts across them, including 4,640 with verified work emails. Houston is the largest hub.

This list covers air heater 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

363Companies

13,533Contacts tracked

4,640Verified emails

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The 25 largest air heater manufacturers based in the United States

Ranked by team size

Top 25 of 363 air heater 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 air heater 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	Goodman AIR Conditioning & Heating	Indirect evidence	Waller, TX, United StatesHQ checked Sep 30, 2026	10001+	2,375 contacts →
	Indirect evidence “Since 1982, Goodman Manufacturing has had one goal: provide customers with reliable, high-quality, energy-efficient, and affordable indoor comfort products.” 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	Thermon	Partial evidence	Austin, TX, United StatesHQ checked Sep 30, 2026	1,001-5,000	901 contacts →
	Partial evidence “Industrial Process Heating Solutions Through its global network, Thermon provides safe, reliable and innovative mission critical industrial process heating solutions.” Source: RevenueBase Database · checked Sep 30, 2026
4	Mestek, INC	Strong evidence	Westfield, MA, United StatesHQ checked Sep 30, 2026	501-1,000	449 contacts →
	Strong evidence “Today, Mestek is a family of over 45 specialty manufacturers providing heating, ventilating, and air conditioning products, coil handling equipment, extruded aluminum products…” Source: RevenueBase Database · checked Sep 30, 2026
5	API Heat Transfer	Partial evidence	Buffalo, NY, United StatesHQ checked Sep 30, 2026	1,001-5,000	364 contacts →
	Partial evidence “API Heat Transfer is a leading global provider of heat transfer solutions, recognized for delivering innovative, energy-efficient equipment for more than 140 years.” Source: RevenueBase Database · checked Sep 30, 2026
6	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
7	Weil-Mclain	Strong evidence	Burr Ridge, IL, United StatesHQ checked Sep 30, 2026	501-1,000	279 contacts →
	Strong evidence “Weil-McLain® is a leading North American designer and manufacturer of hydronic comfort heating systems for residential, commercial and institutional buildings since 1881.” Source: RevenueBase Database · checked Sep 30, 2026
8	Raypak	Strong evidence	Oxnard, United StatesHQ checked Sep 30, 2026	501-1,000	242 contacts →
	Strong evidence “For over 70 years, Raypak has been the world's leading manufacturer of copper finned boilers and heaters.” Source: RevenueBase Database · checked Sep 30, 2026
9	Revcor	Strong evidence	Carpentersville, IL, United StatesHQ checked Sep 30, 2026	501-1,000	187 contacts →
	Strong 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
10	Alliance AIR Products	Strong evidence	San Diego, CA, United StatesHQ checked Sep 30, 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 30, 2026
11	Fulton	Partial evidence	Pulaski, NY, United StatesHQ checked Sep 30, 2026	501-1,000	171 contacts →
	Partial evidence “Fulton specializes in custom engineered industrial and commercial heating systems featuring steam boilers, hot water and hydronic boilers, thermal fluid heaters, and a full range…” Source: RevenueBase Database · checked Sep 30, 2026
12	Marley Engineered Products	Partial evidence	Bennettsville, SC, United StatesHQ checked Sep 30, 2026	201-500	167 contacts →
	Partial evidence “Marley Engineered Products® draws upon a long history of providing reliable comfort heating and ventilation solutions.” Source: RevenueBase Database · checked Sep 30, 2026
13	Bard Manufacturing Company, INC	Indirect evidence	Bryan, OH, United StatesHQ checked Sep 30, 2026	501-1,000	166 contacts →
	Indirect evidence “Bard Manufacturing is a fourth-generation family-owned business founded in 1914 in Bryan, Ohio.” Source: RevenueBase Database · checked Sep 30, 2026
14	Advanced Distributor Products	Indirect evidence	Stone Mountain, GA, United StatesHQ checked Sep 30, 2026	501-1,000	140 contacts →
	Indirect evidence “Advanced Distributor Products (ADP) started with a vision to produce the best evaporator coils in the country.” Source: RevenueBase Database · checked Sep 30, 2026
15	Petro-Chem Development Co., INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	501-1,000	127 contacts →
	Partial evidence “Petro-Chem Development Co, Inc (PCD) was founded in 1939 and has been recognized as a leader in the design and production of fired heaters and furnaces.” Source: RevenueBase Database · checked Sep 30, 2026
16	Empire Comfort Systems	Indirect evidence	Belleville, IL, United StatesHQ checked Sep 30, 2026	201-500	126 contacts →
	Indirect evidence “Empire Comfort Systems: A Company Perspective · Family Owned Since 1932 · A Full Line of Gas-Fired Products for the Independent Dealer · Made in the USA Empire – a Family-Owned…” Source: RevenueBase Database · checked Sep 30, 2026
17	Laars Heating Systems	Indirect evidence	Rochester, NH, United StatesHQ checked Sep 30, 2026	201-500	126 contacts →
	Indirect evidence “Founded in 1948, LAARS serves a diverse base of customers located in many countries across the globe.” Source: RevenueBase Database · checked Sep 30, 2026
18	ECR International	Indirect evidence	Utica, United StatesHQ checked Sep 30, 2026	201-500	126 contacts →
	Indirect evidence “ECR International, Inc.” Source: RevenueBase Database · checked Sep 30, 2026
19	TPI Corporation	Strong evidence	Johnson City, TN, United StatesHQ checked Sep 30, 2026	501-1,000	121 contacts →
	Strong evidence “TPI Corporation is an OEM manufacturer of electric heat equipment, process heat ovens, ventilation products & fans, lighting equipment, and custom thermostatic controls for…” Source: RevenueBase Database · checked Sep 30, 2026
20	TUTCO	Partial evidence	Cookeville, TN, United StatesHQ checked Sep 30, 2026	1,001-5,000	119 contacts →
	Partial evidence “Founded in 1938, Tutco has quickly grown into a global leader in the heating component industry.” Source: RevenueBase Database · checked Sep 30, 2026
21	Lawyer Mechanical Services	Indirect evidence	Las Vegas, NV, United StatesHQ checked Sep 30, 2026	51-200	110 contacts →
	Indirect evidence “Lawyer Mechanical Services (LMS) creates and maintains comfort.” Source: RevenueBase Database · checked Sep 30, 2026
22	Thermal Care, INC	Partial evidence	Niles, IL, United StatesHQ checked Sep 30, 2026	51-200	79 contacts →
	Partial evidence “We are the industry expert and value leader in process heating and cooling solutions.” Source: RevenueBase Database · checked Sep 30, 2026
23	HTP Comfort Solutions	Strong evidence	New Bedford, MA, United StatesHQ checked Sep 30, 2026	51-200	76 contacts →
	Strong evidence “Established in 1974, HTP Comfort Solutions LLC is a full-fledged manufacturer on the cutting edge of energy efficient space and water heating technology.” Source: RevenueBase Database · checked Sep 30, 2026
24	Sigma Thermal, INC	Partial evidence	Marietta, GA, United StatesHQ checked Sep 30, 2026	51-200	75 contacts →
	Partial evidence “Sigma Thermal designs, engineers, supplies, and services process heating systems for industry.” Source: RevenueBase Database · checked Sep 30, 2026
25	King Electrical Mfg. CO	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	51-200	72 contacts →
	Indirect evidence “Why King?” 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: air heater 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 air heater manufacturers.
Partial evidence: Its own public description names part of air heater manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name air heater 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 363 air heater manufacturers based in the United States

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Air heater manufacturers based in the United States at a glance

As of Sep 30, 2026

34.3%Verified-email coverage

37.3Average contacts per company

11-50Median size (employees)

2.2%Largest-city concentration · Houston

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

116

11-50

129

51-200

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 363 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 air heater 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 “air heater 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 air heater 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 air heater 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, 4,640 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 air heater 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 air heater manufacturers are there based in the United States?

RevenueBase identified 363 air heater 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?

Goodman AIR Conditioning & Heating, headquartered in Waller, tops this list with the largest team on record.

Which city has the most air heater manufacturers?

Houston leads with 8 headquartered companies, followed by Tulsa (7) and Buffalo (5).

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 4,640 verified decision-maker contacts tracked across these 363 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.