Company lists · Data refreshed October 2026
Top 25 District heating equipment manufacturers based in the United States
RevenueBase identified 250 company matches for district heating equipment manufacturers associated with the United States as of October 2026 and tracks 6,947 professional contacts across them, including 2,627 with verified work emails. Tulsa is the largest hub.
This list covers company matches for district heating equipment 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 October 11, 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 district heating equipment manufacturers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 654 contacts → | ||||
Exact match “When industrial operations depend on heat that simply cannot fail, Chromalox brings unmatched technical knowledge and high‑performance electric heating solutions that stand the…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 2 | 379 contacts → | ||||
Exact match “API Heat Transfer is a leading global provider of heat transfer solutions, recognized for delivering innovative, energy-efficient equipment for more than 140 years.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 3 | 294 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 · Oct 11, 2026 · View company records in RevenueBase | |||||
| 4 | 289 contacts → | ||||
Exact match “Vicinity Energy is a leading district energy company that owns and operates the largest portfolio of district energy systems nationwide, providing steam, hot water, and chilled…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 5 | 245 contacts → | ||||
Exact match “For over 70 years, Raypak has been the world's leading manufacturer of copper finned boilers and heaters.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 6 | 233 contacts → | ||||
Exact match “At TEi, we help the power and process industries operate safely, sustainably, and without costly downtime.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 7 | 225 contacts → | ||||
Exact match “WaterFurnace International, Inc.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 8 | 189 contacts → | ||||
Exact match “LJUNGSTRÖM is a global leader in heat transfer, energy technology, and advanced manufacturing, delivering engineered solutions that improve performance, reliability, and…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 9 | 186 contacts → | ||||
Exact match “ClimateMaster’s role as a domestic energy and geothermal heating and cooling leader extends back to the late 1950s when the company was first founded in Florida.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 10 | 168 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 · Oct 11, 2026 · View company records in RevenueBase | |||||
| 11 | 168 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 · Oct 11, 2026 · View company records in RevenueBase | |||||
| 12 | 132 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 · Oct 11, 2026 · View company records in RevenueBase | |||||
| 13 | 130 contacts → | ||||
Exact match “ECR International, Inc.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 14 | 115 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 15 | 104 contacts → | ||||
Exact match “Preferred Utilities Manufacturing Corporation is an engineering-based manufacturer of products for commercial, institutional, industrial and nuclear power facilities.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 16 | 80 contacts → | ||||
Exact match “Why King?” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 17 | 76 contacts → | ||||
Exact match “Sigma Thermal designs, engineers, supplies, and services process heating systems for industry.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 18 | 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 · Oct 11, 2026 · View company records in RevenueBase | |||||
| 19 | 67 contacts → | ||||
Exact match “Tecogen is a leading manufacturer of Combined Heat and Power products including natural gas engine-driven cogeneration, air conditioning systems and high efficiency water heaters…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 20 | 66 contacts → | ||||
Exact match “Gaumer Process is a leading designer and manufacturer of electric heaters, controls and engineered systems for the power generation and oil & gas industries.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 21 | 64 contacts → | ||||
Exact match “Warmboard, Inc.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 22 | 64 contacts → | ||||
Exact match “Envirosep Company Overview: Envirosep designs and manufactures integrated solutions for fluid handling, heat transfer and energy recovery.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 23 | 56 contacts → | ||||
Exact match “L.B.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 24 | 55 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 · Oct 11, 2026 · View company records in RevenueBase | |||||
| 25 | 51 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 · Oct 11, 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 “district heating equipment 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 250 district heating equipment manufacturers based in the United States
See the full list, filter by size, metro and specialty, and access 2,627 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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District heating equipment manufacturers based in the United States at a glance
As of Oct 11, 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 250 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 “district heating equipment 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 2,627 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 11, 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 “district heating equipment manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many district heating equipment manufacturers are there based in the United States?
RevenueBase identified 250 company matches for district heating equipment manufacturers associated with the United States 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?
Chromalox tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most district heating equipment manufacturers?
Tulsa leads with 5 company records, followed by Buffalo (3) and New York (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 2,627 professional contacts with verified work emails tracked across these 250 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 11, 2026.
Ready to reach these companies? Verified emails and direct dials for all 250 district heating equipment manufacturers based in the United States. Start with a free account, no credit card.
Download this list →Related lists
District heating equipment manufacturers by geography
- District heating equipment manufacturers based in Australia
- District heating equipment manufacturers based in Austria
- District heating equipment manufacturers based in Belgium
- District heating equipment manufacturers based in Brazil
- District heating equipment manufacturers based in Canada
- District heating equipment manufacturers based in Czechia
- District heating equipment manufacturers based in Denmark
- District heating equipment manufacturers based in Finland
- District heating equipment manufacturers based in France
- District heating equipment manufacturers based in Germany
- District heating equipment manufacturers based in Hungary
- District heating equipment manufacturers based in India
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
- District heating equipment manufacturers based in Australia
- District heating equipment manufacturers based in Austria
- District heating equipment manufacturers based in Belgium
- District heating equipment manufacturers based in Brazil
- District heating equipment manufacturers based in Canada
- District heating equipment manufacturers based in Czechia
Company intelligence · public preview
Top 25 district heating equipment 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 250 matching company records for district heating equipment manufacturers based in the United States, with 6,947 tracked contacts and 2,627 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 11, 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 district heating equipment 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 | Chromaloxchromalox.com HQ: Pittsburgh, PA, United StatesReported employees: 1,001-5,000 | Pittsburgh, PA, United States | 1,001-5,000 | Exact match | 654 contacts → |
“When industrial operations depend on heat that simply cannot fail, Chromalox brings unmatched technical knowledge and high‑performance electric heating solutions that stand the…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  API Heat Transferapiheattransfer.comHQ: Buffalo, NY, United StatesReported employees: 1,001-5,000 | Buffalo, NY, United States | 1,001-5,000 | Exact match | 379 contacts → |
“API Heat Transfer is a leading global provider of heat transfer solutions, recognized for delivering innovative, energy-efficient equipment for more than 140 years.” Recorded description excerpt · October 11, 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 | 294 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 · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Vicinity Energyvicinityenergy.us HQ: Boston, MA, United StatesReported employees: 501-1,000 | Boston, MA, United States | 501-1,000 | Exact match | 289 contacts → |
“Vicinity Energy is a leading district energy company that owns and operates the largest portfolio of district energy systems nationwide, providing steam, hot water, and chilled…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Raypakraypak.com HQ: Oxnard, United StatesReported employees: 501-1,000 | Oxnard, United States | 501-1,000 | Exact match | 245 contacts → |
“For over 70 years, Raypak has been the world's leading manufacturer of copper finned boilers and heaters.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Thermal Engineering International USA INCbabcockpower.comHQ: La Palma, CA, United StatesReported employees: 201-500 | La Palma, CA, United States | 201-500 | Exact match | 233 contacts → |
“At TEi, we help the power and process industries operate safely, sustainably, and without costly downtime.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Waterfurnace Internationalwaterfurnace.com HQ: Fort Wayne, IN, United StatesReported employees: 201-500 | Fort Wayne, IN, United States | 201-500 | Exact match | 225 contacts → |
“WaterFurnace International, Inc.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Ljungströmljungstrom.com HQ: Wellsville, NY, United StatesReported employees: 1,001-5,000 | Wellsville, NY, United States | 1,001-5,000 | Exact match | 189 contacts → |
“LJUNGSTRÖM is a global leader in heat transfer, energy technology, and advanced manufacturing, delivering engineered solutions that improve performance, reliability, and…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Climatemaster, INCclimatemaster.comHQ: Oklahoma City, OK, United StatesReported employees: 501-1,000 | Oklahoma City, OK, United States | 501-1,000 | Exact match | 186 contacts → |
“ClimateMaster’s role as a domestic energy and geothermal heating and cooling leader extends back to the late 1950s when the company was first founded in Florida.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Fultonfulton.com HQ: Pulaski, NY, United StatesReported employees: 501-1,000 | Pulaski, NY, United States | 501-1,000 | Exact match | 168 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 · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Marley Engineered Productsmarleymep.com HQ: Bennettsville, SC, United StatesReported employees: 201-500 | Bennettsville, SC, United States | 201-500 | Exact match | 168 contacts → |
“Marley Engineered Products® draws upon a long history of providing reliable comfort heating and ventilation solutions.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Laars Heating Systemslaars.com HQ: Rochester, NH, United StatesReported employees: 201-500 | Rochester, NH, United States | 201-500 | Exact match | 132 contacts → |
“Founded in 1948, LAARS serves a diverse base of customers located in many countries across the globe.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | ECR Internationalecrinternational.com HQ: Utica, United StatesReported employees: 201-500 | Utica, United States | 201-500 | Exact match | 130 contacts → |
“ECR International, Inc.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Aerco International, INCaerco.comHQ: Blauvelt, NY, United StatesReported employees: 51-200 | Blauvelt, NY, United States | 51-200 | Exact match | 115 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 15 | Preferred Utilities Manufacturing Corporationpreferred-mfg.com HQ: Danbury, CT, United StatesReported employees: 51-200 | Danbury, CT, United States | 51-200 | Exact match | 104 contacts → |
“Preferred Utilities Manufacturing Corporation is an engineering-based manufacturer of products for commercial, institutional, industrial and nuclear power facilities.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | King Electrical Mfg. COking-electric.com HQ: Seattle, WA, United StatesReported employees: 51-200 | Seattle, WA, United States | 51-200 | Exact match | 80 contacts → |
“Why King?” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | 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 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | 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 · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Tecogen INCtecogen.com HQ: North Billerica, MA, United StatesReported employees: 51-200 | North Billerica, MA, United States | 51-200 | Exact match | 67 contacts → |
“Tecogen is a leading manufacturer of Combined Heat and Power products including natural gas engine-driven cogeneration, air conditioning systems and high efficiency water heaters…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Gaumer Processgaumer.com HQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 66 contacts → |
“Gaumer Process is a leading designer and manufacturer of electric heaters, controls and engineered systems for the power generation and oil & gas industries.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Warmboard INCwarmboard.com HQ: Scotts Valley, CA, United StatesReported employees: 51-200 | Scotts Valley, CA, United States | 51-200 | Exact match | 64 contacts → |
“Warmboard, Inc.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Envirosepenvirosep.com HQ: Georgetown, SC, United StatesReported employees: 51-200 | Georgetown, SC, United States | 51-200 | Exact match | 64 contacts → |
“Envirosep Company Overview: Envirosep designs and manufactures integrated solutions for fluid handling, heat transfer and energy recovery.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | LB White Companylbwhite.com HQ: Onalaska, WI, United StatesReported employees: 51-200 | Onalaska, WI, United States | 51-200 | Exact match | 56 contacts → |
“L.B.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | OGI Process Equipmentogipe.com HQ: Sand Springs, OK, United StatesReported employees: 51-200 | Sand Springs, OK, United States | 51-200 | Exact match | 55 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 · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Zehnder Rittlingzehnder-rittling.comHQ: Buffalo, NY, United StatesReported employees: 51-200 | Buffalo, NY, United States | 51-200 | Exact match | 51 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 · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 250 company matches
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District heating equipment manufacturers: dataset insights
October 11, 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
250 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 250 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 11, 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 district heating equipment 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 district heating equipment manufacturers did RevenueBase find based in the United States?
The saved snapshot records 250 matching company records, 6,947 tracked contacts and 2,627 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 11, 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
District heating equipment manufacturers by geography
- District heating equipment manufacturers based in Australia
- District heating equipment manufacturers based in Austria
- District heating equipment manufacturers based in Belgium
- District heating equipment manufacturers based in Brazil
- District heating equipment manufacturers based in Canada
- District heating equipment manufacturers based in Czechia
- District heating equipment manufacturers based in Denmark
- District heating equipment manufacturers based in Finland
- District heating equipment manufacturers based in France
- District heating equipment manufacturers based in Germany
- District heating equipment manufacturers based in Hungary
- District heating equipment manufacturers based in India
Cite this list
RevenueBase Data Team. Top 25 district heating equipment manufacturers based in the United States. Snapshot: October 11, 2026. https://revenuebase.ai/companies/district-heating-equipment-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
- District heating equipment manufacturers based in Australia
- District heating equipment manufacturers based in Austria
- District heating equipment manufacturers based in Belgium
- District heating equipment manufacturers based in Brazil
- District heating equipment manufacturers based in Canada
- District heating equipment manufacturers based in Czechia
Company intelligence · public preview
Top 25 district heating equipment manufacturers based in the United States
RevenueBase records 250 matching company records for district heating equipment manufacturers based in the United States, with 6,947 tracked contacts and 2,627 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 11, 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 district heating equipment 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 | Chromaloxchromalox.com HQ: Pittsburgh, PA, United StatesReported employees: 1,001-5,000 | Pittsburgh, PA, United States | 1,001-5,000 | Exact match | 654 contacts → |
“When industrial operations depend on heat that simply cannot fail, Chromalox brings unmatched technical knowledge and high‑performance electric heating solutions that stand the…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | API Heat Transferapiheattransfer.com HQ: Buffalo, NY, United StatesReported employees: 1,001-5,000 | Buffalo, NY, United States | 1,001-5,000 | Exact match | 379 contacts → |
“API Heat Transfer is a leading global provider of heat transfer solutions, recognized for delivering innovative, energy-efficient equipment for more than 140 years.” Recorded description excerpt · October 11, 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 | 294 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 · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Vicinity Energyvicinityenergy.us HQ: Boston, MA, United StatesReported employees: 501-1,000 | Boston, MA, United States | 501-1,000 | Exact match | 289 contacts → |
“Vicinity Energy is a leading district energy company that owns and operates the largest portfolio of district energy systems nationwide, providing steam, hot water, and chilled…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Raypakraypak.com HQ: Oxnard, United StatesReported employees: 501-1,000 | Oxnard, United States | 501-1,000 | Exact match | 245 contacts → |
“For over 70 years, Raypak has been the world's leading manufacturer of copper finned boilers and heaters.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Thermal Engineering International USA INCbabcockpower.com HQ: La Palma, CA, United StatesReported employees: 201-500 | La Palma, CA, United States | 201-500 | Exact match | 233 contacts → |
“At TEi, we help the power and process industries operate safely, sustainably, and without costly downtime.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Waterfurnace Internationalwaterfurnace.com HQ: Fort Wayne, IN, United StatesReported employees: 201-500 | Fort Wayne, IN, United States | 201-500 | Exact match | 225 contacts → |
“WaterFurnace International, Inc.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Ljungströmljungstrom.com HQ: Wellsville, NY, United StatesReported employees: 1,001-5,000 | Wellsville, NY, United States | 1,001-5,000 | Exact match | 189 contacts → |
“LJUNGSTRÖM is a global leader in heat transfer, energy technology, and advanced manufacturing, delivering engineered solutions that improve performance, reliability, and…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Climatemaster, INCclimatemaster.com HQ: Oklahoma City, OK, United StatesReported employees: 501-1,000 | Oklahoma City, OK, United States | 501-1,000 | Exact match | 186 contacts → |
“ClimateMaster’s role as a domestic energy and geothermal heating and cooling leader extends back to the late 1950s when the company was first founded in Florida.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Fultonfulton.com HQ: Pulaski, NY, United StatesReported employees: 501-1,000 | Pulaski, NY, United States | 501-1,000 | Exact match | 168 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 · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Marley Engineered Productsmarleymep.com HQ: Bennettsville, SC, United StatesReported employees: 201-500 | Bennettsville, SC, United States | 201-500 | Exact match | 168 contacts → |
“Marley Engineered Products® draws upon a long history of providing reliable comfort heating and ventilation solutions.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Laars Heating Systemslaars.com HQ: Rochester, NH, United StatesReported employees: 201-500 | Rochester, NH, United States | 201-500 | Exact match | 132 contacts → |
“Founded in 1948, LAARS serves a diverse base of customers located in many countries across the globe.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | ECR Internationalecrinternational.com HQ: Utica, United StatesReported employees: 201-500 | Utica, United States | 201-500 | Exact match | 130 contacts → |
“ECR International, Inc.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Aerco International, INCaerco.com HQ: Blauvelt, NY, United StatesReported employees: 51-200 | Blauvelt, NY, United States | 51-200 | Exact match | 115 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 15 | Preferred Utilities Manufacturing Corporationpreferred-mfg.com HQ: Danbury, CT, United StatesReported employees: 51-200 | Danbury, CT, United States | 51-200 | Exact match | 104 contacts → |
“Preferred Utilities Manufacturing Corporation is an engineering-based manufacturer of products for commercial, institutional, industrial and nuclear power facilities.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | King Electrical Mfg. COking-electric.com HQ: Seattle, WA, United StatesReported employees: 51-200 | Seattle, WA, United States | 51-200 | Exact match | 80 contacts → |
“Why King?” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | 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 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | 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 · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Tecogen INCtecogen.com HQ: North Billerica, MA, United StatesReported employees: 51-200 | North Billerica, MA, United States | 51-200 | Exact match | 67 contacts → |
“Tecogen is a leading manufacturer of Combined Heat and Power products including natural gas engine-driven cogeneration, air conditioning systems and high efficiency water heaters…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Gaumer Processgaumer.com HQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 66 contacts → |
“Gaumer Process is a leading designer and manufacturer of electric heaters, controls and engineered systems for the power generation and oil & gas industries.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Warmboard INCwarmboard.com HQ: Scotts Valley, CA, United StatesReported employees: 51-200 | Scotts Valley, CA, United States | 51-200 | Exact match | 64 contacts → |
“Warmboard, Inc.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Envirosepenvirosep.com HQ: Georgetown, SC, United StatesReported employees: 51-200 | Georgetown, SC, United States | 51-200 | Exact match | 64 contacts → |
“Envirosep Company Overview: Envirosep designs and manufactures integrated solutions for fluid handling, heat transfer and energy recovery.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | LB White Companylbwhite.com HQ: Onalaska, WI, United StatesReported employees: 51-200 | Onalaska, WI, United States | 51-200 | Exact match | 56 contacts → |
“L.B.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | OGI Process Equipmentogipe.com HQ: Sand Springs, OK, United StatesReported employees: 51-200 | Sand Springs, OK, United States | 51-200 | Exact match | 55 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 · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Zehnder Rittlingzehnder-rittling.com HQ: Buffalo, NY, United StatesReported employees: 51-200 | Buffalo, NY, United States | 51-200 | Exact match | 51 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 · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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District heating equipment manufacturers: dataset insights
October 11, 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
250 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 250 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 11, 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 district heating equipment 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 district heating equipment manufacturers did RevenueBase find based in the United States?
The saved snapshot records 250 matching company records, 6,947 tracked contacts and 2,627 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 11, 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
District heating equipment manufacturers by geography
- District heating equipment manufacturers based in Australia
- District heating equipment manufacturers based in Austria
- District heating equipment manufacturers based in Belgium
- District heating equipment manufacturers based in Brazil
- District heating equipment manufacturers based in Canada
- District heating equipment manufacturers based in Czechia
- District heating equipment manufacturers based in Denmark
- District heating equipment manufacturers based in Finland
- District heating equipment manufacturers based in France
- District heating equipment manufacturers based in Germany
- District heating equipment manufacturers based in Hungary
- District heating equipment manufacturers based in India
Cite this list
RevenueBase Data Team. Top 25 district heating equipment manufacturers based in the United States. Snapshot: October 11, 2026. https://revenuebase.ai/companies/district-heating-equipment-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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