Company lists · Data refreshed November 2026

Top 25 Self-regulating heaters suppliers based in the United States

RevenueBase identified 243 company matches for self-regulating heaters suppliers associated with the United States as of November 2026 and tracks 6,921 professional contacts across them, including 2,549 with verified work emails. Chicago is the largest hub.

This list covers company matches for self-regulating heaters suppliers associated with the 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 November 1, 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 Nov 1, 2026 How this list was built
243Companies
6,921Contacts tracked
2,549Verified emails
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The 25 largest self-regulating heaters suppliers based in the United States

Ranked by team size
Top 25 of 243 company matches for self-regulating heaters suppliers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 1, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSt. Louis, NY, United StatesHQ recorded Nov 1, 20261,001-5,0002,039 contacts →

Exact match

“Watlow is a global industrial technology company that uses its world-class engineering expertise, advanced thermal systems and manufacturing excellence to provide a wide array of…”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
2Exact matchAustin, TX, United StatesHQ recorded Nov 1, 20261,001-5,000960 contacts →

Exact match

“Industrial Process Heating Solutions Through its global network, Thermon provides safe, reliable and innovative mission critical industrial process heating solutions.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
3Exact matchPittsburgh, PA, United StatesHQ recorded Nov 1, 20261,001-5,000654 contacts →

Exact match

“When industrial operations depend on heat that simply cannot fail, Chromalox brings unmatched technical knowledge and high‑performance electric heating solutions that stand the…”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
4Exact matchCary, IL, United StatesHQ recorded Nov 1, 2026201-500273 contacts →

Exact match

“Durex Industries has over 40 years of excellence in designing and manufacturing custom thermal solutions.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
5Exact matchHayward, CA, United StatesHQ recorded Nov 1, 2026201-500193 contacts →

Exact match

“R.F.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
6Exact matchBennettsville, SC, United StatesHQ recorded Nov 1, 2026201-500168 contacts →

Exact match

“Marley Engineered Products® draws upon a long history of providing reliable comfort heating and ventilation solutions.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
7Exact matchCookeville, TN, United StatesHQ recorded Nov 1, 20261,001-5,000123 contacts →

Exact match

“Founded in 1938, Tutco has quickly grown into a global leader in the heating component industry.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
8Exact matchWood Dale, IL, United StatesHQ recorded Nov 1, 2026201-50081 contacts →

Exact match

“Founded in 1972, Tempco is a trusted manufacturer and designer specializing in high-quality electric heating elements, temperature sensors, and power control products for…”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
9Exact matchSeattle, WA, United StatesHQ recorded Nov 1, 202651-20080 contacts →

Exact match

“Why King?”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
10Exact matchMarietta, GA, United StatesHQ recorded Nov 1, 202651-20076 contacts →

Exact match

“Sigma Thermal designs, engineers, supplies, and services process heating systems for industry.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
11Exact matchNew Bedford, MA, United StatesHQ recorded Nov 1, 202651-20076 contacts →

Exact match

“Established in 1974, HTP Comfort Solutions LLC is a full-fledged manufacturer on the cutting edge of energy efficient space and water heating technology.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
12Exact matchChattanooga, TN, United StatesHQ recorded Nov 1, 2026201-50075 contacts →

Exact match

“Manufacturer of heaters, tanks and related products for a wide variety of industries.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
13Exact matchHouston, TX, United StatesHQ recorded Nov 1, 202651-20066 contacts →

Exact match

“Gaumer Process is a leading designer and manufacturer of electric heaters, controls and engineered systems for the power generation and oil & gas industries.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
14Exact matchMissouri City, TX, United StatesHQ recorded Nov 1, 202651-20065 contacts →

Exact match

“Since 1977, Willbanks has provided advanced solutions and support for thousands of commercial heating systems and equipment.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
15Exact matchScotts Valley, CA, United StatesHQ recorded Nov 1, 202651-20064 contacts →

Exact match

“Warmboard, Inc.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
16Exact matchBattle Creek, MI, United StatesHQ recorded Nov 1, 202651-20064 contacts →

Exact match

“Nexthermal is a collaborative electric heater manufacturing company that focuses its passion and energy toward custom designing electric heaters, systems and assemblies.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
17Exact matchOnalaska, WI, United StatesHQ recorded Nov 1, 202651-20056 contacts →

Exact match

“L.B.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
18Exact matchChicago, IL, United StatesHQ recorded Nov 1, 202611-5050 contacts →

Exact match

“Headquartered in Chicago with 11 locations, South Side Control Supply Co.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
19Exact matchBloomfield, NJ, United StatesHQ recorded Nov 1, 202611-5050 contacts →

Exact match

“D&B Building Solutions provides world class heating, ventilating, air conditioning and power generation equipment from leading vendors, including Daikin, Alliance Air Products…”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
20Exact matchOklahoma City, OK, United StatesHQ recorded Nov 1, 202651-20035 contacts →

Exact match

“Since 1918 Federal has been a leading thermal solutions provider in the Midwest.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
21Exact matchHouston, TX, United StatesHQ recorded Nov 1, 202611-5034 contacts →

Exact match

“Founded in 1963, Roessler Equipment Company is the leading supplier of commercial HVAC products in the Houston, Texas region.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
22Exact matchBristol, CT, United StatesHQ recorded Nov 1, 202611-5030 contacts →

Exact match

“ETTER Engineering has historically served the Northeast providing gas equipment and systems to countless markets and applications since 1940.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
23Exact matchChula Vista, CA, United StatesHQ recorded Nov 1, 20261,001-5,00030 contacts →

Exact match

“SJH Inc is one of the world's largest producers of electric heating elements.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
24Exact matchSeattle, WA, United StatesHQ recorded Nov 1, 202611-5029 contacts →

Exact match

“Incorporated in 1971, Mechanical Sales, Inc.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase
25Exact matchTulsa, OK, United StatesHQ recorded Nov 1, 202611-5026 contacts →

Exact match

“Tulsa Heaters Midstream is a reliable, flexible heater and combustion company that specializes in the midstream Gas Processing industry.”

Recorded in the RevenueBase company graph · Nov 1, 2026 · View company records in RevenueBase

Showing 25 of 243 self-regulating heaters suppliers based in the United States

See the full list, filter by size, metro and specialty, and access 2,549 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Self-regulating heaters suppliers based in the United States at a glance

As of Nov 1, 2026
36.8%Verified-email coverage
28.5Average contacts per company
11-50Median size (employees)
1.6%Largest-city concentration · Chicago
Nov 1, 2026Page data refreshed

Companies by employee count

1-10
108
11-50
85
51-200
36
201-500
6
501-1,000
2
1,001-5,000
6

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 243 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 the United States whose business descriptions match “self-regulating heaters suppliers” 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 2,549 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 November 1, 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.

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 “self-regulating heaters suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many self-regulating heaters suppliers are there based in the United States?

RevenueBase identified 243 company matches for self-regulating heaters suppliers associated with the United States as of November 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?

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

Which city has the most self-regulating heaters suppliers?

Chicago leads with 4 company records, followed by Houston (4) and Tulsa (4).

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 2,549 professional contacts with verified work emails tracked across these 243 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 November 1, 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.