Company lists · Data refreshed September 2026
Top 25 Unit heater manufacturers based in the United States
RevenueBase identified 166 company matches for unit heater manufacturers associated with the United States as of September 2026 and tracks 8,215 professional contacts across them, including 2,753 with verified work emails. Tulsa is the largest hub.
This list covers company matches for unit heater manufacturers 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 September 30, 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.
The 25 largest unit heater manufacturers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,375 contacts → | ||||
Exact match “Since 1982, Goodman Manufacturing has had one goal: provide customers with reliable, high-quality, energy-efficient, and affordable indoor comfort products.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 2 | 1,208 contacts → | ||||
Exact match “Driving the industry forward through the design, manufacturing, and rigorous testing of premium HVAC equipment.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 3 | 279 contacts → | ||||
Exact match “Weil-McLain® is a leading North American designer and manufacturer of hydronic comfort heating systems for residential, commercial and institutional buildings since 1881.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 4 | 190 contacts → | ||||
Exact match “R.F.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 5 | 171 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 6 | 167 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 · Sep 30, 2026 · View company records in RevenueBase | |||||
| 7 | 166 contacts → | ||||
Exact match “Bard Manufacturing is a fourth-generation family-owned business founded in 1914 in Bryan, Ohio.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 8 | 140 contacts → | ||||
Exact match “Advanced Distributor Products (ADP) started with a vision to produce the best evaporator coils in the country.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 9 | 126 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 10 | 126 contacts → | ||||
Exact match “Founded in 1948, LAARS serves a diverse base of customers located in many countries across the globe.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 11 | 126 contacts → | ||||
Exact match “ECR International, Inc.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 12 | 76 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 · Sep 30, 2026 · View company records in RevenueBase | |||||
| 13 | 75 contacts → | ||||
Exact match “Sigma Thermal designs, engineers, supplies, and services process heating systems for industry.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 14 | 72 contacts → | ||||
Exact match “Why King?” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 15 | 71 contacts → | ||||
Exact match “Manufacturer of heaters, tanks and related products for a wide variety of industries.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 16 | 63 contacts → | ||||
Exact match “Warmboard, Inc.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 17 | 58 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 · Sep 30, 2026 · View company records in RevenueBase | |||||
| 18 | 56 contacts → | ||||
Exact match “OGI (Oil, Gas, and Industrial) Process Equipment designs, manufactures, sells, and services TERI brand indirect fired water bath heaters and QuikWater® brand direct fired water…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 19 | 54 contacts → | ||||
Exact match “L.B.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 20 | 50 contacts → | ||||
Exact match “Williams Comfort Products designs and manufactures high-performance HVAC solutions, specializing in furnaces, fan coil units, air handlers, and hydronic heating and cooling…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 21 | 50 contacts → | ||||
Exact match “WarmlyYours is a fast-growing firm in Chicago providing radiant heating solutions.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 22 | 47 contacts → | ||||
Exact match “Industry Innovation & Customer Satisfaction For decades, customers have looked to Rittling for the industry's most advanced, reliable and efficient heating designs.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 23 | 45 contacts → | ||||
Exact match “Magic Aire is an independent Manufacturer of Heating, Ventilation and Air Conditioning (HVAC) components, fan coils, air handlers and unit ventilators.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 24 | 42 contacts → | ||||
Exact match “Rock Energy Systems, LLC holds three leading brands of space heating products that include portable radiant heaters, waste oil furnaces, and boilers.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 25 | 35 contacts → | ||||
Exact match “Bromic Heating is the only company to design, engineer, and manufacture gas, electric and portable outdoor heating products.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “unit heater manufacturers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 166 unit heater manufacturers based in the United States
See the full list, filter by size, metro and specialty, and access 2,753 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Unit heater manufacturers based in the United States at a glance
As of Sep 30, 2026Companies by employee count
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 166 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 “unit heater manufacturers” 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 2,753 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 September 30, 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 “unit heater manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many unit heater manufacturers are there based in the United States?
RevenueBase identified 166 company matches for unit heater manufacturers associated with the United States as of September 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?
Goodman AIR Conditioning & Heating tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most unit heater manufacturers?
Tulsa leads with 4 company records, followed by Pittsburgh (3) and Atlanta (2).
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 2,753 professional contacts with verified work emails tracked across these 166 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 September 30, 2026.
Ready to reach these companies? Verified emails and direct dials for all 166 unit heater manufacturers based in the United States. Start with a free account, no credit card.
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Unit heater manufacturers by geography
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Unit heater manufacturers based in Canada
- Unit heater manufacturers based in Germany
- Unit heater manufacturers based in India
- Unit heater manufacturers based in Italy
- Unit heater manufacturers based in the United Kingdom
- AI companies based in the United States
Company intelligence · public preview
Top 25 unit heater manufacturers based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 166 matching company records for unit heater manufacturers based in the United States, with 8,215 tracked contacts and 2,753 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 30, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 unit heater manufacturers based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Goodman AIR Conditioning & Heatinggoodmanmfg.comHQ: Waller, TX, United StatesReported employees: 10001+ | Waller, TX, United States | 10001+ | Exact match | 2,375 contacts → |
“Since 1982, Goodman Manufacturing has had one goal: provide customers with reliable, high-quality, energy-efficient, and affordable indoor comfort products.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Aaon, INCaaon.comHQ: Tulsa, OK, United StatesReported employees: 1,001-5,000 | Tulsa, OK, United States | 1,001-5,000 | Exact match | 1,208 contacts → |
“Driving the industry forward through the design, manufacturing, and rigorous testing of premium HVAC equipment.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Weil-Mclainweil-mclain.com HQ: Burr Ridge, IL, United StatesReported employees: 501-1,000 | Burr Ridge, IL, United States | 501-1,000 | Exact match | 279 contacts → |
“Weil-McLain® is a leading North American designer and manufacturer of hydronic comfort heating systems for residential, commercial and institutional buildings since 1881.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | R.F. Macdonald COrfmacdonald.com HQ: Hayward, CA, United StatesReported employees: 201-500 | Hayward, CA, United States | 201-500 | Exact match | 190 contacts → |
“R.F.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Fultonfulton.com HQ: Pulaski, NY, United StatesReported employees: 501-1,000 | Pulaski, NY, United States | 501-1,000 | Exact match | 171 contacts → |
“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…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Marley Engineered Productsmarleymep.com HQ: Bennettsville, SC, United StatesReported employees: 201-500 | Bennettsville, SC, United States | 201-500 | Exact match | 167 contacts → |
“Marley Engineered Products® draws upon a long history of providing reliable comfort heating and ventilation solutions.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Bard Manufacturing Company, INCbardhvac.com HQ: Bryan, OH, United StatesReported employees: 501-1,000 | Bryan, OH, United States | 501-1,000 | Exact match | 166 contacts → |
“Bard Manufacturing is a fourth-generation family-owned business founded in 1914 in Bryan, Ohio.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Advanced Distributor Productsadpnow.comHQ: Stone Mountain, GA, United StatesReported employees: 501-1,000 | Stone Mountain, GA, United States | 501-1,000 | Exact match | 140 contacts → |
“Advanced Distributor Products (ADP) started with a vision to produce the best evaporator coils in the country.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Empire Comfort Systemsempirecomfort.com HQ: Belleville, IL, United StatesReported employees: 201-500 | Belleville, IL, United States | 201-500 | Exact match | 126 contacts → |
“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…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Laars Heating Systemslaars.com HQ: Rochester, NH, United StatesReported employees: 201-500 | Rochester, NH, United States | 201-500 | Exact match | 126 contacts → |
“Founded in 1948, LAARS serves a diverse base of customers located in many countries across the globe.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | ECR Internationalecrinternational.com HQ: Utica, United StatesReported employees: 201-500 | Utica, United States | 201-500 | Exact match | 126 contacts → |
“ECR International, Inc.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | HTP Comfort Solutionshtproducts.com HQ: New Bedford, MA, United StatesReported employees: 51-200 | New Bedford, MA, United States | 51-200 | Exact match | 76 contacts → |
“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 description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Sigma Thermal, INCsigmathermal.com HQ: Marietta, GA, United StatesReported employees: 51-200 | Marietta, GA, United States | 51-200 | Exact match | 75 contacts → |
“Sigma Thermal designs, engineers, supplies, and services process heating systems for industry.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | King Electrical Mfg. COking-electric.com HQ: Seattle, WA, United StatesReported employees: 51-200 | Seattle, WA, United States | 51-200 | Exact match | 72 contacts → |
“Why King?” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Heatec, An Astec Brandastecindustries.comHQ: Chattanooga, TN, United StatesReported employees: 201-500 | Chattanooga, TN, United States | 201-500 | Exact match | 71 contacts → |
“Manufacturer of heaters, tanks and related products for a wide variety of industries.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Warmboard INCwarmboard.com HQ: Scotts Valley, CA, United StatesReported employees: 51-200 | Scotts Valley, CA, United States | 51-200 | Exact match | 63 contacts → |
“Warmboard, Inc.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Nexthermalnexthermal.com HQ: Battle Creek, MI, United StatesReported employees: 51-200 | Battle Creek, MI, United States | 51-200 | Exact match | 58 contacts → |
“Nexthermal is a collaborative electric heater manufacturing company that focuses its passion and energy toward custom designing electric heaters, systems and assemblies.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | OGI Process Equipmentogipe.com HQ: Sand Springs, OK, United StatesReported employees: 51-200 | Sand Springs, OK, United States | 51-200 | Exact match | 56 contacts → |
“OGI (Oil, Gas, and Industrial) Process Equipment designs, manufactures, sells, and services TERI brand indirect fired water bath heaters and QuikWater® brand direct fired water…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | LB White Companylbwhite.com HQ: Onalaska, WI, United StatesReported employees: 51-200 | Onalaska, WI, United States | 51-200 | Exact match | 54 contacts → |
“L.B.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Williams Comfort Productswilliamscomfort.com HQ: Colton, CA, United StatesReported employees: 201-500 | Colton, CA, United States | 201-500 | Exact match | 50 contacts → |
“Williams Comfort Products designs and manufactures high-performance HVAC solutions, specializing in furnaces, fan coil units, air handlers, and hydronic heating and cooling…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Warmlyyourswarmlyyours.com HQ: Lake Zurich, IL, United StatesReported employees: 11-50 | Lake Zurich, IL, United States | 11-50 | Exact match | 50 contacts → |
“WarmlyYours is a fast-growing firm in Chicago providing radiant heating solutions.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Zehnder Rittlingzehnder-rittling.comHQ: Buffalo, NY, United StatesReported employees: 51-200 | Buffalo, NY, United States | 51-200 | Exact match | 47 contacts → |
“Industry Innovation & Customer Satisfaction For decades, customers have looked to Rittling for the industry's most advanced, reliable and efficient heating designs.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | United Electric Company - Magic Airemagicaire.com HQ: Wichita Falls, TX, United StatesReported employees: 51-200 | Wichita Falls, TX, United States | 51-200 | Exact match | 45 contacts → |
“Magic Aire is an independent Manufacturer of Heating, Ventilation and Air Conditioning (HVAC) components, fan coils, air handlers and unit ventilators.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Rock Energy Systems LLCrockenergysystems.com HQ: Janesville, WI, United StatesReported employees: 51-200 | Janesville, WI, United States | 51-200 | Exact match | 42 contacts → |
“Rock Energy Systems, LLC holds three leading brands of space heating products that include portable radiant heaters, waste oil furnaces, and boilers.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Bromic Heatingbromic.com HQ: Irvine, CA, United StatesReported employees: 51-200 | Irvine, CA, United States | 51-200 | Exact match | 35 contacts → |
“Bromic Heating is the only company to design, engineer, and manufacture gas, electric and portable outdoor heating products.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 166 company matches
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Unit heater manufacturers: dataset insights
September 30, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
166 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 166 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 30, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for unit heater manufacturers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many unit heater manufacturers did RevenueBase find based in the United States?
The saved snapshot records 166 matching company records, 8,215 tracked contacts and 2,753 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 30, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Unit heater manufacturers by geography
Cite this list
RevenueBase Data Team. Top 25 unit heater manufacturers based in the United States. Snapshot: September 30, 2026. https://revenuebase.ai/companies/unit-heater-manufacturers/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Unit heater manufacturers based in Canada
- Unit heater manufacturers based in Germany
- Unit heater manufacturers based in India
- Unit heater manufacturers based in Italy
- Unit heater manufacturers based in the United Kingdom
- AI companies based in the United States
Company intelligence · public preview
Top 25 unit heater manufacturers based in the United States
RevenueBase records 166 matching company records for unit heater manufacturers based in the United States, with 8,215 tracked contacts and 2,753 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 30, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 unit heater manufacturers based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Goodman AIR Conditioning & Heatinggoodmanmfg.com HQ: Waller, TX, United StatesReported employees: 10001+ | Waller, TX, United States | 10001+ | Exact match | 2,375 contacts → |
“Since 1982, Goodman Manufacturing has had one goal: provide customers with reliable, high-quality, energy-efficient, and affordable indoor comfort products.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Aaon, INCaaon.com HQ: Tulsa, OK, United StatesReported employees: 1,001-5,000 | Tulsa, OK, United States | 1,001-5,000 | Exact match | 1,208 contacts → |
“Driving the industry forward through the design, manufacturing, and rigorous testing of premium HVAC equipment.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Weil-Mclainweil-mclain.com HQ: Burr Ridge, IL, United StatesReported employees: 501-1,000 | Burr Ridge, IL, United States | 501-1,000 | Exact match | 279 contacts → |
“Weil-McLain® is a leading North American designer and manufacturer of hydronic comfort heating systems for residential, commercial and institutional buildings since 1881.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | R.F. Macdonald COrfmacdonald.com HQ: Hayward, CA, United StatesReported employees: 201-500 | Hayward, CA, United States | 201-500 | Exact match | 190 contacts → |
“R.F.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Fultonfulton.com HQ: Pulaski, NY, United StatesReported employees: 501-1,000 | Pulaski, NY, United States | 501-1,000 | Exact match | 171 contacts → |
“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…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Marley Engineered Productsmarleymep.com HQ: Bennettsville, SC, United StatesReported employees: 201-500 | Bennettsville, SC, United States | 201-500 | Exact match | 167 contacts → |
“Marley Engineered Products® draws upon a long history of providing reliable comfort heating and ventilation solutions.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Bard Manufacturing Company, INCbardhvac.com HQ: Bryan, OH, United StatesReported employees: 501-1,000 | Bryan, OH, United States | 501-1,000 | Exact match | 166 contacts → |
“Bard Manufacturing is a fourth-generation family-owned business founded in 1914 in Bryan, Ohio.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Advanced Distributor Productsadpnow.com HQ: Stone Mountain, GA, United StatesReported employees: 501-1,000 | Stone Mountain, GA, United States | 501-1,000 | Exact match | 140 contacts → |
“Advanced Distributor Products (ADP) started with a vision to produce the best evaporator coils in the country.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Empire Comfort Systemsempirecomfort.com HQ: Belleville, IL, United StatesReported employees: 201-500 | Belleville, IL, United States | 201-500 | Exact match | 126 contacts → |
“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…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Laars Heating Systemslaars.com HQ: Rochester, NH, United StatesReported employees: 201-500 | Rochester, NH, United States | 201-500 | Exact match | 126 contacts → |
“Founded in 1948, LAARS serves a diverse base of customers located in many countries across the globe.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | ECR Internationalecrinternational.com HQ: Utica, United StatesReported employees: 201-500 | Utica, United States | 201-500 | Exact match | 126 contacts → |
“ECR International, Inc.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | HTP Comfort Solutionshtproducts.com HQ: New Bedford, MA, United StatesReported employees: 51-200 | New Bedford, MA, United States | 51-200 | Exact match | 76 contacts → |
“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 description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Sigma Thermal, INCsigmathermal.com HQ: Marietta, GA, United StatesReported employees: 51-200 | Marietta, GA, United States | 51-200 | Exact match | 75 contacts → |
“Sigma Thermal designs, engineers, supplies, and services process heating systems for industry.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | King Electrical Mfg. COking-electric.com HQ: Seattle, WA, United StatesReported employees: 51-200 | Seattle, WA, United States | 51-200 | Exact match | 72 contacts → |
“Why King?” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Heatec, An Astec Brandastecindustries.com HQ: Chattanooga, TN, United StatesReported employees: 201-500 | Chattanooga, TN, United States | 201-500 | Exact match | 71 contacts → |
“Manufacturer of heaters, tanks and related products for a wide variety of industries.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Warmboard INCwarmboard.com HQ: Scotts Valley, CA, United StatesReported employees: 51-200 | Scotts Valley, CA, United States | 51-200 | Exact match | 63 contacts → |
“Warmboard, Inc.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Nexthermalnexthermal.com HQ: Battle Creek, MI, United StatesReported employees: 51-200 | Battle Creek, MI, United States | 51-200 | Exact match | 58 contacts → |
“Nexthermal is a collaborative electric heater manufacturing company that focuses its passion and energy toward custom designing electric heaters, systems and assemblies.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | OGI Process Equipmentogipe.com HQ: Sand Springs, OK, United StatesReported employees: 51-200 | Sand Springs, OK, United States | 51-200 | Exact match | 56 contacts → |
“OGI (Oil, Gas, and Industrial) Process Equipment designs, manufactures, sells, and services TERI brand indirect fired water bath heaters and QuikWater® brand direct fired water…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | LB White Companylbwhite.com HQ: Onalaska, WI, United StatesReported employees: 51-200 | Onalaska, WI, United States | 51-200 | Exact match | 54 contacts → |
“L.B.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Williams Comfort Productswilliamscomfort.com HQ: Colton, CA, United StatesReported employees: 201-500 | Colton, CA, United States | 201-500 | Exact match | 50 contacts → |
“Williams Comfort Products designs and manufactures high-performance HVAC solutions, specializing in furnaces, fan coil units, air handlers, and hydronic heating and cooling…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Warmlyyourswarmlyyours.com HQ: Lake Zurich, IL, United StatesReported employees: 11-50 | Lake Zurich, IL, United States | 11-50 | Exact match | 50 contacts → |
“WarmlyYours is a fast-growing firm in Chicago providing radiant heating solutions.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Zehnder Rittlingzehnder-rittling.com HQ: Buffalo, NY, United StatesReported employees: 51-200 | Buffalo, NY, United States | 51-200 | Exact match | 47 contacts → |
“Industry Innovation & Customer Satisfaction For decades, customers have looked to Rittling for the industry's most advanced, reliable and efficient heating designs.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | United Electric Company - Magic Airemagicaire.com HQ: Wichita Falls, TX, United StatesReported employees: 51-200 | Wichita Falls, TX, United States | 51-200 | Exact match | 45 contacts → |
“Magic Aire is an independent Manufacturer of Heating, Ventilation and Air Conditioning (HVAC) components, fan coils, air handlers and unit ventilators.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Rock Energy Systems LLCrockenergysystems.com HQ: Janesville, WI, United StatesReported employees: 51-200 | Janesville, WI, United States | 51-200 | Exact match | 42 contacts → |
“Rock Energy Systems, LLC holds three leading brands of space heating products that include portable radiant heaters, waste oil furnaces, and boilers.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Bromic Heatingbromic.com HQ: Irvine, CA, United StatesReported employees: 51-200 | Irvine, CA, United States | 51-200 | Exact match | 35 contacts → |
“Bromic Heating is the only company to design, engineer, and manufacture gas, electric and portable outdoor heating products.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 166 company matches
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Unit heater manufacturers: dataset insights
September 30, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
166 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 166 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 30, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for unit heater manufacturers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many unit heater manufacturers did RevenueBase find based in the United States?
The saved snapshot records 166 matching company records, 8,215 tracked contacts and 2,753 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 30, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Unit heater manufacturers by geography
Cite this list
RevenueBase Data Team. Top 25 unit heater manufacturers based in the United States. Snapshot: September 30, 2026. https://revenuebase.ai/companies/unit-heater-manufacturers/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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