Company lists · Data refreshed September 2026

Top 9 Commercial boiler manufacturers based in Poland

RevenueBase identified 50 commercial boiler manufacturers headquartered in Poland as of September 2026 and tracks 494 professional contacts across them, including 49 with verified work emails. Warszawa is the largest hub.

This list covers commercial boiler manufacturers headquartered in Poland, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review
50Companies
494Contacts tracked
49Verified emails
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The 9 largest commercial boiler manufacturers based in Poland

Ranked by team size
Top 9 of 50 commercial boiler manufacturers based in Poland, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to commercial boiler manufacturers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceSędziszów, PolandHQ checked Sep 16, 20261,001-5,000119 contacts →

Indirect evidence

“Fabryka Kotłów “SEFAKO” S.A.”

Source: RevenueBase Database · checked Sep 16, 2026
2Indirect evidenceWarszawa, PolandHQ checked Sep 16, 2026n/a61 contacts →

Indirect evidence

“Grupa Vaillant jest liderem na rynku międzynarodowym w dziedzinie techniki grzewczej i wentylacyjnej oraz klimatyzacji.”

Source: RevenueBase Database · checked Sep 16, 2026
3Strong evidenceŚwiebodzice, PolandHQ checked Sep 16, 2026201-50034 contacts →

Strong evidence

“TERMET S.A, as part of Ferro Group S.A, is a leading manufacturer of heating devices in Poland - gas boilers of various types, heat pumps, water heaters and solutions based on…”

Source: RevenueBase Database · checked Sep 16, 2026
4Indirect evidenceChorzów, PolandHQ checked Sep 16, 2026201-50026 contacts →

Indirect evidence

“INTROL-ENERGOMONTAŻ to firma działająca w sektorach przemysłu, ciepłownictwa i energetyki zawodowej.”

Source: RevenueBase Database · checked Sep 16, 2026
5Strong evidenceWarszawa, PolandHQ checked Sep 16, 202651-20026 contacts →

Strong evidence

“Water Heating & Cooling solutions, offering Storage Calorifiers, Boilers, Heat Exchangers, Heat Pumps and Solar Panels which are designed and manufactured in in accordance with…”

Source: RevenueBase Database · checked Sep 16, 2026
6Indirect evidenceKomorów, PolandHQ checked Sep 16, 202611-5016 contacts →

Indirect evidence

“WOLF GmbH to niemiecki producent profesjonalnych systemów grzewczych: pomp ciepła, kotłów gazowych i olejowych, systemów wentylacyjnych i klimatyzacyjnych opartych na…”

Source: RevenueBase Database · checked Sep 16, 2026
7Indirect evidenceStalowa Wola, PolandHQ checked Sep 16, 202651-2009 contacts →

Indirect evidence

“Rakoczy Solidne Ciepło - to jedna z najstarszych marek kotlarskich w Polsce.”

Source: RevenueBase Database · checked Sep 16, 2026
8Indirect evidenceŁaziska Górne, PolandHQ checked Sep 16, 202611-505 contacts →

Indirect evidence

“Grupa UNICAL jest liderem w produkcji kotłów oraz urządzeń grzewczych.”

Source: RevenueBase Database · checked Sep 16, 2026
9Indirect evidenceKraków, PolandHQ checked Sep 16, 20261-102 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026

Showing 9 of 50 commercial boiler manufacturers based in Poland

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Commercial boiler manufacturers based in Poland at a glance

As of Sep 16, 2026
9.9%Verified-email coverage
9.9Average contacts per company
11-50Median size (employees)
16.0%Largest-city concentration · Warszawa
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
13
11-50
18
51-200
14
201-500
2
501-1,000
1
1,001-5,000
1
10001+
1

Email recency for this list is measured worldwide rather than for Poland, so it is reported there. Company counts and contact totals on this page are exact for Poland, over 50 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among commercial boiler manufacturers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Poland whose own description of what they do matches “commercial boiler manufacturers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names commercial boiler manufacturers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among commercial boiler manufacturers, and records with no verified work email. Companies headquartered outside Poland are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 49 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 16, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names commercial boiler manufacturers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many commercial boiler manufacturers are there based in Poland?

RevenueBase identified 50 commercial boiler manufacturers headquartered in Poland as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Fabryka Kotłów Sefako S.A, headquartered in Sedziszow, tops this list with the largest team on record.

Which city has the most commercial boiler manufacturers?

Warszawa leads with 8 headquartered companies, followed by Sedziszow (3) and Elblag (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 49 verified decision-maker contacts tracked across these 50 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.