Company lists · Data refreshed September 2026

Top 8 Geothermal equipment suppliers based in Türkiye

RevenueBase identified 74 geothermal equipment suppliers headquartered in Türkiye as of September 2026 and tracks 1,267 professional contacts across them, including 366 with verified work emails. Istanbul is the largest hub.

This list covers geothermal equipment suppliers headquartered in Türkiye, 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 20, 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 20, 2026 86% judged on-target in blind review
74Companies
1,267Contacts tracked
366Verified emails
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The 8 largest geothermal equipment suppliers based in Türkiye

Ranked by team size
Top 8 of 74 geothermal equipment suppliers based in Türkiye, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to geothermal equipment suppliers: 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 evidenceİstanbul, TürkiyeHQ checked Sep 20, 2026501-1,000439 contacts →

Indirect evidence

“1969 yılında faaliyetlerine başlayan ve 2013 yılı itibarıyla iklimlendirme sektöründe Avrupa’nın ilk üç şirketi arasında yer alan BDR Thermea Group bünyesine katılan Baymak…”

Source: RevenueBase Database · checked Sep 20, 2026
2Indirect evidenceİstanbul, TürkiyeHQ checked Sep 20, 20261,001-5,000365 contacts →

Indirect evidence

“Vaillant Group, ısıtma ve havalandırma teknolojisi alanlarında uluslararası pazarlarda lider bir kuruluştur.”

Source: RevenueBase Database · checked Sep 20, 2026
3Indirect evidenceAnkara, TürkiyeHQ checked Sep 20, 20261,001-5,000124 contacts →

Indirect evidence

“Bilgi birikimini yatırıma ve tasarrufa dönüştürmek için çalışmalarını 1990 yılından bu yana sürdüren Doğan Jeotermal Group ülkemizin sahip olduğu jeotermal enerji kaynaklarını…”

Source: RevenueBase Database · checked Sep 20, 2026
4Indirect evidenceBayraklı, TürkiyeHQ checked Sep 20, 202611-5028 contacts →

Indirect evidence

“GMK Energy is a world leader consulting, engineering and project development company which gives engineering, project design, consultancy, owner's engineering and integrated…”

Source: RevenueBase Database · checked Sep 20, 2026
5Indirect evidenceAltunizade, TürkiyeHQ checked Sep 20, 202651-20011 contacts →

Indirect evidence

“Dansuk Engineering - a solution partner to global corporations like Koç Holding, Arçelik, Beko, LG and Arctic - has been providing innovative HVAC and energy solutions for…”

Source: RevenueBase Database · checked Sep 20, 2026
6Partial evidenceAnkara, TürkiyeHQ checked Sep 20, 202611-507 contacts →

Partial evidence

“ALTERNATİF POWER® has been established in 1994 and has been working on the fields of energy, petrol, and geothermal power.”

Source: RevenueBase Database · checked Sep 20, 2026
7Indirect evidenceAksu/antalya, TürkiyeHQ checked Sep 20, 20261-101 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 20, 2026
8Indirect evidenceYeniköy Sarıyer, TürkiyeHQ checked Sep 20, 20261-101 contacts →

Indirect evidence

“DANIŞMANLIK, MÜHENDİSLİK VE PROJE HİZMETLERİ Isıtma, Soğutma ve Havalandırma İhtiyaçlarının Verimli Sistem Çözümleri Enerji Verimliliğinin ve Yenilenebilir Enerjinin Ön Planda…”

Source: RevenueBase Database · checked Sep 20, 2026

Showing 8 of 74 geothermal equipment suppliers based in Türkiye

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Geothermal equipment suppliers based in Türkiye at a glance

As of Sep 20, 2026
28.9%Verified-email coverage
17.1Average contacts per company
1-10Median size (employees)
13.5%Largest-city concentration · Istanbul
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
41
11-50
23
51-200
5
501-1,000
1
1,001-5,000
3

Email recency for this list is measured worldwide rather than for Türkiye, so it is reported there. Company counts and contact totals on this page are exact for Türkiye, over 74 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 geothermal equipment suppliers, 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 Türkiye whose own description of what they do matches “geothermal equipment suppliers”. 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 geothermal equipment suppliers), 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 geothermal equipment suppliers, and records with no verified work email. Companies headquartered outside Türkiye 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, 366 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 20, 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 geothermal equipment suppliers, 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 geothermal equipment suppliers are there based in Türkiye?

RevenueBase identified 74 geothermal equipment suppliers headquartered in Türkiye 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?

Baymak BDR Thermea Group, headquartered in Istanbul, tops this list with the largest team on record.

Which city has the most geothermal equipment suppliers?

Istanbul leads with 10 headquartered companies, followed by Ankara (5) and Antalya (3).

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 366 verified decision-maker contacts tracked across these 74 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 20, 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.