Company lists · Data refreshed November 2026

Top 18 Open loop geothermal system installers based in Finland

RevenueBase identified 28 company matches for open loop geothermal system installers associated with Finland as of November 2026 and tracks 247 professional contacts across them, including 139 with verified work emails. Vantaa is the largest hub.

This list covers company matches for open loop geothermal system installers associated with Finland, 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 November 6, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
28Companies
247Contacts tracked
139Verified emails
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The 18 largest open loop geothermal system installers based in Finland

Ranked by team size
Top 18 of 28 company matches for open loop geothermal system installers based in Finland, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchPirkkala, FinlandHQ recorded Nov 6, 202651-20072 contacts →

Exact match

“Rototec provides geoenergy based heating and cooling for large properties.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchEspoo, FinlandHQ recorded Nov 6, 202651-20040 contacts →

Exact match

“Tarjoamme maalämpöä palveluna yrityksille ja taloyhtiöille.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchVantaa, FinlandHQ recorded Nov 6, 202651-20028 contacts →

Exact match

“Tom Allen Senera Oy is one of the leading providers of heating and cooling solutions to residential and commercial buildings in Finland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchHelsinki, FinlandHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“Olemme suomalainen suurten kiinteistöjen lähienergian tuottaja.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchPargas, FinlandHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“Vesi ja lämpö omasta maasta!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchMynämäki, FinlandHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“MuoviTech-konserni on Euroopan johtava geoenergiatuotteiden valmistaja.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchHelsinki, FinlandHQ recorded Nov 6, 20261-1011 contacts →

Exact match

“QHeat develops and delivers patented coaxial deep geothermal technology for large-scale heating, cooling and seasonal heat storage.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchKello, FinlandHQ recorded Nov 6, 20261-107 contacts →

Exact match

“Our company specializes in geothermal drilling on large scale properties and private real estates.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchJakobstad, FinlandHQ recorded Nov 6, 202611-504 contacts →

Exact match

“Yrittäjäveljesten Dan ja Frank Snellmanin Pietarsaaressa vuonna 2008 perustama TECHEAT on keskittynyt vaativien maalämpöjärjestelmien toteuttamiseen liike- ja…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchEspoo, FinlandHQ recorded Nov 6, 20261-104 contacts →

Exact match

“Haluatko säästää euroja, nostaa kiinteistön arvoa ja pienentää hiilipäästöjä?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchPori, FinlandHQ recorded Nov 6, 20261-104 contacts →

Exact match

“Ilmalämpöpumput/ Vesi-ilmalämpöpumput/ Maalämpö/ Aurinkopaneelit/ Rakennustyöt”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchVantaa, FinlandHQ recorded Nov 6, 20261-103 contacts →

Exact match

“Pistoke Oy auttaa suomalaisia kiinteistönomistajia ja rakennuttajia pienentämään rakennusten hiilidioksidipäästöjä ja saavuttamaan korkean lämmityksen energiaomavaraisuuden.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchVantaa, FinlandHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Wahlres Oy was founded in 2016 and aims to reduce the reliance of Finnish buildings on non-renewable energy sources.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchTurku, FinlandHQ recorded Nov 6, 20261-102 contacts →

Exact match

“ILP Urakointi Oy on ilma- ja ilmavesilämpöpumppujen asennusyritys.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchRaasepori, FinlandHQ recorded Nov 6, 202611-501 contacts →

Exact match

“Kaikki kaivonporausalan palvelut yhdestä paikasta – myös saaristossa!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchKempele, FinlandHQ recorded Nov 6, 202611-501 contacts →

Exact match

“Geoenergy as a service”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchJyväskylä, FinlandHQ recorded Nov 6, 20261-101 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchVuokatti, FinlandHQ recorded Nov 6, 20261-101 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 18 of 28 open loop geothermal system installers based in Finland

See the full list, filter by size, metro and specialty, and access 139 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Open loop geothermal system installers based in Finland at a glance

As of Nov 6, 2026
56.3%Verified-email coverage
8.8Average contacts per company
1-10Median size (employees)
14.3%Largest-city concentration · Vantaa
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
17
11-50
7
51-200
3

Email recency for this list is measured worldwide rather than for Finland, so it is reported there. Company counts and contact totals on this page are exact for Finland, over 28 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 Finland whose business descriptions match “open loop geothermal system installers” 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 139 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 November 6, 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 “open loop geothermal system installers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many open loop geothermal system installers are there based in Finland?

RevenueBase identified 28 company matches for open loop geothermal system installers associated with Finland as of November 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?

Rototec tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most open loop geothermal system installers?

Vantaa leads with 4 company records, followed by Helsinki (3) and Pirkkala (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 139 professional contacts with verified work emails tracked across these 28 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 November 6, 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 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.