Company lists · Data refreshed October 2026
Top 25 Direct-fired heaters suppliers worldwide
RevenueBase identified 79 company matches for direct-fired heaters suppliers worldwide as of October 2026 and tracks 753 professional contacts across them, including 249 with verified work emails. Tulsa is the largest hub.
This list covers company matches for direct-fired heaters suppliers worldwide, 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 October 24, 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 direct-fired heaters suppliers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 133 contacts → | ||||
Exact match “Esteem supplies Fired Heaters (Heaters, Cracking Furnaces, Reformers, Waste Heat recovery Units, Process Furnaces) and related equipment to Oil & Gas, Petrochemical, Refining…” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 2 | 83 contacts → | ||||
Exact match “Boustead International Heaters is a leading global specialist in designing, engineering and supplying direct-fired process heater systems, waste heat recovery units and once…” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 3 | 76 contacts → | ||||
Exact match “Sigma Thermal designs, engineers, supplies, and services process heating systems for industry.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 4 | 37 contacts → | ||||
Exact match “FURNACE IMPROVEMENTS SERVICES (FIS) has been actively providing value-added solutions for Fired Heaters, Boilers, and Waste Heat Recovery Units to end-users around the world for…” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 5 | 31 contacts → | ||||
Exact match “At VEAB Heat Tech in Hässleholm, we are experts in creating energy-efficient and sustainable heating solutions for both commercial and industrial needs.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 6 | 27 contacts → | ||||
Exact match “OnQuest provides global fired heater engineering, API 530 and API 560 heater design, syngas reformers, waste heat recovery units, SCR systems, and heater revamp solutions for the…” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 7 | 26 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 · Oct 24, 2026 · View company records in RevenueBase | |||||
| 8 | 25 contacts → | ||||
Exact match “Industry leading manufacturer of electric, diesel and propane/natural gas fueled, direct and indirect fired construction heaters.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 9 | 23 contacts → | ||||
Exact match “With over 3 decades of experience in this field, Heat Applications India Pvt.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 10 | 16 contacts → | ||||
Exact match “Exotherm Corporation is a leader in the design and manufacturing of custom engineered process heaters for direct and indirect heating applications.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 11 | 13 contacts → | ||||
Exact match “BORN INC is WORLDWIDE supplier of DIRECT FIRED HEATERS based out of TULSA, Oklahoma, United States.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 12 | 9 contacts → | ||||
Exact match “Winterwarm Polska specjalizuje się w produkcji wysokiej klasy nadmuchowego ogrzewania przemysłowego, opartego o bardzo nowoczesne i zaawansowane technologicznie nagrzewnice gazowe.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 13 | 9 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 14 | 9 contacts → | ||||
Exact match “Built in Canada.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 15 | 8 contacts → | ||||
Exact match “Great Southern Technologies (GST) delivers innovative, custom-engineered direct-fired heater and combustion solutions-from design through fabrication to installation-to optimize…” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 16 | 7 contacts → | ||||
Exact match “Established as a family business, OutTrade has developed to being a global importer and wholesale supplier of high quality electric and gas-fired patio heaters, outdoor fireplaces…” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 17 | 6 contacts → | ||||
Exact match “Tioga Air Heaters manufactures and sells direct fired, indirect fired, hot water, steam, and electric heaters, HEPA filters, fans, and other climate control products and…” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 18 | 6 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 19 | 5 contacts → | ||||
Exact match “The UK's leading patio heater company.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 20 | 4 contacts → | ||||
Exact match “We carry out designs, engineering, fabrication, installation and start-up of fired heaters for a wide range of applications in refinery and petrochemical industries.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 21 | 4 contacts → | ||||
Exact match “Infraglo supplies highly efficient, infrared radiant gas burners and electric heaters, radiant and warm air equipment for all industries and applications from our purpose-built…” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 22 | 4 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 23 | 2 contacts → | ||||
Exact match “SunFire is the #1 leader in commercial grade radiant space heaters.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 24 | 2 contacts → | ||||
Exact match “IR Energy is the sister company of Superior Radiant Products Ltd, an industry leader in the design and manufacturing of energy efficient infrared heating solutions.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 25 | 2 contacts → | ||||
Exact match “DKSI is the only North American-owned and operated supplier of on & off highway fuel fired air heaters, engine heaters, and service parts.” Recorded in the RevenueBase company graph · Oct 24, 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 “direct-fired heaters suppliers”. 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 79 direct-fired heaters suppliers worldwide
See the full list, filter by size, metro and specialty, and access 249 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Direct-fired heaters suppliers worldwide at a glance
As of Oct 24, 2026Companies by employee count
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 79 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 worldwide whose business descriptions match “direct-fired 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. 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 249 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 October 24, 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 “direct-fired heaters suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many direct-fired heaters suppliers are there worldwide?
RevenueBase identified 79 company matches for direct-fired heaters suppliers worldwide as of October 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?
Esteem Projects tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most direct-fired heaters suppliers?
Tulsa leads with 4 company records, followed by Ahmedabad (3) and Thane (3).
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 249 professional contacts with verified work emails tracked across these 79 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 October 24, 2026.
Ready to reach these companies? Verified emails and direct dials for all 79 direct-fired heaters suppliers worldwide. Start with a free account, no credit card.
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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.
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Company intelligence · public preview
Top 25 direct-fired heaters suppliers worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 79 matching company records for direct-fired heaters suppliers worldwide, with 753 tracked contacts and 249 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: October 24, 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 direct-fired heaters suppliers worldwide
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 | Esteem Projectsesteemprojects.com HQ: Delhi, IndiaReported employees: 51-200 | Delhi, India | 51-200 | Exact match | 133 contacts → |
“Esteem supplies Fired Heaters (Heaters, Cracking Furnaces, Reformers, Waste Heat recovery Units, Process Furnaces) and related equipment to Oil & Gas, Petrochemical, Refining…” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Boustead International Heatersbihl.com HQ: Burgess Hill, United KingdomReported employees: 51-200 | Burgess Hill, United Kingdom | 51-200 | Exact match | 83 contacts → |
“Boustead International Heaters is a leading global specialist in designing, engineering and supplying direct-fired process heater systems, waste heat recovery units and once…” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Sigma Thermal, INCsigmathermal.com HQ: Marietta, GA, United StatesReported employees: 51-200 | Marietta, GA, United States | 51-200 | Exact match | 76 contacts → |
“Sigma Thermal designs, engineers, supplies, and services process heating systems for industry.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Furnace Improvements Servicesheatflux.com HQ: Sugar Land, TX, United StatesReported employees: 11-50 | Sugar Land, TX, United States | 11-50 | Exact match | 37 contacts → |
“FURNACE IMPROVEMENTS SERVICES (FIS) has been actively providing value-added solutions for Fired Heaters, Boilers, and Waste Heat Recovery Units to end-users around the world for…” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Veab Heat Tech ABveab.com HQ: Hässleholm, SwedenReported employees: 51-200 | Hässleholm, Sweden | 51-200 | Exact match | 31 contacts → |
“At VEAB Heat Tech in Hässleholm, we are experts in creating energy-efficient and sustainable heating solutions for both commercial and industrial needs.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Onquestonquest.comHQ: Tulsa, OK, United StatesReported employees: 11-50 | Tulsa, OK, United States | 11-50 | Exact match | 27 contacts → |
“OnQuest provides global fired heater engineering, API 530 and API 560 heater design, syngas reformers, waste heat recovery units, SCR systems, and heater revamp solutions for the…” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Tulsa Heaters Midstreamtulsaheatersmidstream.com HQ: Tulsa, OK, United StatesReported employees: 11-50 | Tulsa, OK, United States | 11-50 | Exact match | 26 contacts → |
“Tulsa Heaters Midstream is a reliable, flexible heater and combustion company that specializes in the midstream Gas Processing industry.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Campo Equipmentcampoequipment.com HQ: Etobicoke, ON, CanadaReported employees: 51-200 | Etobicoke, ON, Canada | 51-200 | Exact match | 25 contacts → |
“Industry leading manufacturer of electric, diesel and propane/natural gas fueled, direct and indirect fired construction heaters.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Heat Applications Indiaheatapplicationsindia.com HQ: United StatesReported employees: 51-200 | United States | 51-200 | Exact match | 23 contacts → |
“With over 3 decades of experience in this field, Heat Applications India Pvt.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Exotherm Corporationexotherm.com HQ: Magnolia, TX, United StatesReported employees: 11-50 | Magnolia, TX, United States | 11-50 | Exact match | 16 contacts → |
“Exotherm Corporation is a leader in the design and manufacturing of custom engineered process heaters for direct and indirect heating applications.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Born INCborninc.com HQ: Tulsa, OK, United StatesReported employees: 51-200 | Tulsa, OK, United States | 51-200 | Exact match | 13 contacts → |
“BORN INC is WORLDWIDE supplier of DIRECT FIRED HEATERS based out of TULSA, Oklahoma, United States.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Winterwarm Polskawinterwarm.pl HQ: Jasin, PolandReported employees: 11-50 | Jasin, Poland | 11-50 | Exact match | 9 contacts → |
“Winterwarm Polska specjalizuje się w produkcji wysokiej klasy nadmuchowego ogrzewania przemysłowego, opartego o bardzo nowoczesne i zaawansowane technologicznie nagrzewnice gazowe.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Exheat Industrial Limitedexheat-industrial.com HQ: Norwich, United KingdomReported employees: 1-10 | Norwich, United Kingdom | 1-10 | Exact match | 9 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 14 | Aerotech Herman Nelson Intl. INChermannelson.com HQ: Winnipeg, MB, CanadaReported employees: 1-10 | Winnipeg, MB, Canada | 1-10 | Exact match | 9 contacts → |
“Built in Canada.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Great Southern Technologiesgreatsoutherngroup.com HQ: Broken Arrow, OK, United StatesReported employees: 11-50 | Broken Arrow, OK, United States | 11-50 | Exact match | 8 contacts → |
“Great Southern Technologies (GST) delivers innovative, custom-engineered direct-fired heater and combustion solutions-from design through fabrication to installation-to optimize…” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Outtrade BVouttrade.eu HQ: Nieuwleusen, NetherlandsReported employees: 11-50 | Nieuwleusen, Netherlands | 11-50 | Exact match | 7 contacts → |
“Established as a family business, OutTrade has developed to being a global importer and wholesale supplier of high quality electric and gas-fired patio heaters, outdoor fireplaces…” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Tioga AIR Heaterstiogaairheaters.com HQ: Brooklyn Center, MN, United StatesReported employees: 11-50 | Brooklyn Center, MN, United States | 11-50 | Exact match | 6 contacts → |
“Tioga Air Heaters manufactures and sells direct fired, indirect fired, hot water, steam, and electric heaters, HEPA filters, fans, and other climate control products and…” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Excel Heaters - Indiaexcelheaters.com HQ: Mumbai, IndiaReported employees: 11-50 | Mumbai, India | 11-50 | Exact match | 6 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 19 | Heat Outdoors LTDheat-outdoors.co.uk HQ: Bishop's Stortford, United KingdomReported employees: 1-10 | Bishop's Stortford, United Kingdom | 1-10 | Exact match | 5 contacts → |
“The UK's leading patio heater company.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Chempex-Hte, A.Schempex.cz HQ: Žabovřesky, Czech RepublicReported employees: 11-50 | Žabovřesky, Czech Republic | 11-50 | Exact match | 4 contacts → |
“We carry out designs, engineering, fabrication, installation and start-up of fired heaters for a wide range of applications in refinery and petrochemical industries.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Infraglo Sheffield LTDinfraglo.com HQ: Sheffield, United KingdomReported employees: 11-50 | Sheffield, United Kingdom | 11-50 | Exact match | 4 contacts → |
“Infraglo supplies highly efficient, infrared radiant gas burners and electric heaters, radiant and warm air equipment for all industries and applications from our purpose-built…” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Solarflo Corporationsolarflo.com HQ: Bedford, OH, United StatesReported employees: 1-10 | Bedford, OH, United States | 1-10 | Exact match | 4 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 23 | Sunfire Heaterssunfireheaters.com HQ: Janesville, WI, United StatesReported employees: 51-200 | Janesville, WI, United States | 51-200 | Exact match | 2 contacts → |
“SunFire is the #1 leader in commercial grade radiant space heaters.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | IR Energy Luxury Patio Heatingirenergy.ca HQ: Stoney Creek, ON, CanadaReported employees: 51-200 | Stoney Creek, ON, Canada | 51-200 | Exact match | 2 contacts → |
“IR Energy is the sister company of Superior Radiant Products Ltd, an industry leader in the design and manufacturing of energy efficient infrared heating solutions.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | DKSIdksi.com HQ: Port Moody, BC, CanadaReported employees: 1-10 | Port Moody, BC, Canada | 1-10 | Exact match | 2 contacts → |
“DKSI is the only North American-owned and operated supplier of on & off highway fuel fired air heaters, engine heaters, and service parts.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 79 company matches
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Direct-fired heaters suppliers: dataset insights
October 24, 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
78 records in the displayed employee bands.
1 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 across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 79 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: October 24, 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 direct-fired heaters suppliers?
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 direct-fired heaters suppliers did RevenueBase find worldwide?
The saved snapshot records 79 matching company records, 753 tracked contacts and 249 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: October 24, 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
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 direct-fired heaters suppliers worldwide. Snapshot: October 24, 2026. https://revenuebase.ai/companies/browse/direct-fired-heaters-suppliers.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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Company intelligence · public preview
Top 25 direct-fired heaters suppliers worldwide
RevenueBase records 79 matching company records for direct-fired heaters suppliers worldwide, with 753 tracked contacts and 249 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: October 24, 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 direct-fired heaters suppliers worldwide
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 | Esteem Projectsesteemprojects.com HQ: Delhi, IndiaReported employees: 51-200 | Delhi, India | 51-200 | Exact match | 133 contacts → |
“Esteem supplies Fired Heaters (Heaters, Cracking Furnaces, Reformers, Waste Heat recovery Units, Process Furnaces) and related equipment to Oil & Gas, Petrochemical, Refining…” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Boustead International Heatersbihl.com HQ: Burgess Hill, United KingdomReported employees: 51-200 | Burgess Hill, United Kingdom | 51-200 | Exact match | 83 contacts → |
“Boustead International Heaters is a leading global specialist in designing, engineering and supplying direct-fired process heater systems, waste heat recovery units and once…” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Sigma Thermal, INCsigmathermal.com HQ: Marietta, GA, United StatesReported employees: 51-200 | Marietta, GA, United States | 51-200 | Exact match | 76 contacts → |
“Sigma Thermal designs, engineers, supplies, and services process heating systems for industry.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Furnace Improvements Servicesheatflux.com HQ: Sugar Land, TX, United StatesReported employees: 11-50 | Sugar Land, TX, United States | 11-50 | Exact match | 37 contacts → |
“FURNACE IMPROVEMENTS SERVICES (FIS) has been actively providing value-added solutions for Fired Heaters, Boilers, and Waste Heat Recovery Units to end-users around the world for…” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Veab Heat Tech ABveab.com HQ: Hässleholm, SwedenReported employees: 51-200 | Hässleholm, Sweden | 51-200 | Exact match | 31 contacts → |
“At VEAB Heat Tech in Hässleholm, we are experts in creating energy-efficient and sustainable heating solutions for both commercial and industrial needs.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Onquestonquest.com HQ: Tulsa, OK, United StatesReported employees: 11-50 | Tulsa, OK, United States | 11-50 | Exact match | 27 contacts → |
“OnQuest provides global fired heater engineering, API 530 and API 560 heater design, syngas reformers, waste heat recovery units, SCR systems, and heater revamp solutions for the…” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Tulsa Heaters Midstreamtulsaheatersmidstream.com HQ: Tulsa, OK, United StatesReported employees: 11-50 | Tulsa, OK, United States | 11-50 | Exact match | 26 contacts → |
“Tulsa Heaters Midstream is a reliable, flexible heater and combustion company that specializes in the midstream Gas Processing industry.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Campo Equipmentcampoequipment.com HQ: Etobicoke, ON, CanadaReported employees: 51-200 | Etobicoke, ON, Canada | 51-200 | Exact match | 25 contacts → |
“Industry leading manufacturer of electric, diesel and propane/natural gas fueled, direct and indirect fired construction heaters.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Heat Applications Indiaheatapplicationsindia.com HQ: United StatesReported employees: 51-200 | United States | 51-200 | Exact match | 23 contacts → |
“With over 3 decades of experience in this field, Heat Applications India Pvt.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Exotherm Corporationexotherm.com HQ: Magnolia, TX, United StatesReported employees: 11-50 | Magnolia, TX, United States | 11-50 | Exact match | 16 contacts → |
“Exotherm Corporation is a leader in the design and manufacturing of custom engineered process heaters for direct and indirect heating applications.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Born INCborninc.com HQ: Tulsa, OK, United StatesReported employees: 51-200 | Tulsa, OK, United States | 51-200 | Exact match | 13 contacts → |
“BORN INC is WORLDWIDE supplier of DIRECT FIRED HEATERS based out of TULSA, Oklahoma, United States.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Winterwarm Polskawinterwarm.pl HQ: Jasin, PolandReported employees: 11-50 | Jasin, Poland | 11-50 | Exact match | 9 contacts → |
“Winterwarm Polska specjalizuje się w produkcji wysokiej klasy nadmuchowego ogrzewania przemysłowego, opartego o bardzo nowoczesne i zaawansowane technologicznie nagrzewnice gazowe.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Exheat Industrial Limitedexheat-industrial.com HQ: Norwich, United KingdomReported employees: 1-10 | Norwich, United Kingdom | 1-10 | Exact match | 9 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 14 | Aerotech Herman Nelson Intl. INChermannelson.com HQ: Winnipeg, MB, CanadaReported employees: 1-10 | Winnipeg, MB, Canada | 1-10 | Exact match | 9 contacts → |
“Built in Canada.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Great Southern Technologiesgreatsoutherngroup.com HQ: Broken Arrow, OK, United StatesReported employees: 11-50 | Broken Arrow, OK, United States | 11-50 | Exact match | 8 contacts → |
“Great Southern Technologies (GST) delivers innovative, custom-engineered direct-fired heater and combustion solutions-from design through fabrication to installation-to optimize…” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Outtrade BVouttrade.eu HQ: Nieuwleusen, NetherlandsReported employees: 11-50 | Nieuwleusen, Netherlands | 11-50 | Exact match | 7 contacts → |
“Established as a family business, OutTrade has developed to being a global importer and wholesale supplier of high quality electric and gas-fired patio heaters, outdoor fireplaces…” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Tioga AIR Heaterstiogaairheaters.com HQ: Brooklyn Center, MN, United StatesReported employees: 11-50 | Brooklyn Center, MN, United States | 11-50 | Exact match | 6 contacts → |
“Tioga Air Heaters manufactures and sells direct fired, indirect fired, hot water, steam, and electric heaters, HEPA filters, fans, and other climate control products and…” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Excel Heaters - Indiaexcelheaters.com HQ: Mumbai, IndiaReported employees: 11-50 | Mumbai, India | 11-50 | Exact match | 6 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 19 | Heat Outdoors LTDheat-outdoors.co.uk HQ: Bishop's Stortford, United KingdomReported employees: 1-10 | Bishop's Stortford, United Kingdom | 1-10 | Exact match | 5 contacts → |
“The UK's leading patio heater company.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Chempex-Hte, A.Schempex.cz HQ: Žabovřesky, Czech RepublicReported employees: 11-50 | Žabovřesky, Czech Republic | 11-50 | Exact match | 4 contacts → |
“We carry out designs, engineering, fabrication, installation and start-up of fired heaters for a wide range of applications in refinery and petrochemical industries.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Infraglo Sheffield LTDinfraglo.com HQ: Sheffield, United KingdomReported employees: 11-50 | Sheffield, United Kingdom | 11-50 | Exact match | 4 contacts → |
“Infraglo supplies highly efficient, infrared radiant gas burners and electric heaters, radiant and warm air equipment for all industries and applications from our purpose-built…” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Solarflo Corporationsolarflo.com HQ: Bedford, OH, United StatesReported employees: 1-10 | Bedford, OH, United States | 1-10 | Exact match | 4 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 23 | Sunfire Heaterssunfireheaters.com HQ: Janesville, WI, United StatesReported employees: 51-200 | Janesville, WI, United States | 51-200 | Exact match | 2 contacts → |
“SunFire is the #1 leader in commercial grade radiant space heaters.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | IR Energy Luxury Patio Heatingirenergy.ca HQ: Stoney Creek, ON, CanadaReported employees: 51-200 | Stoney Creek, ON, Canada | 51-200 | Exact match | 2 contacts → |
“IR Energy is the sister company of Superior Radiant Products Ltd, an industry leader in the design and manufacturing of energy efficient infrared heating solutions.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | DKSIdksi.com HQ: Port Moody, BC, CanadaReported employees: 1-10 | Port Moody, BC, Canada | 1-10 | Exact match | 2 contacts → |
“DKSI is the only North American-owned and operated supplier of on & off highway fuel fired air heaters, engine heaters, and service parts.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 79 company matches
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Direct-fired heaters suppliers: dataset insights
October 24, 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
78 records in the displayed employee bands.
1 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 across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 79 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: October 24, 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 direct-fired heaters suppliers?
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 direct-fired heaters suppliers did RevenueBase find worldwide?
The saved snapshot records 79 matching company records, 753 tracked contacts and 249 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: October 24, 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
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Cite this list
RevenueBase Data Team. Top 25 direct-fired heaters suppliers worldwide. Snapshot: October 24, 2026. https://revenuebase.ai/companies/browse/direct-fired-heaters-suppliers.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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