Company lists · Data refreshed November 2026

Top 25 Thermal energy system integrators based in Finland

RevenueBase identified 38 company matches for thermal energy system integrators associated with Finland as of November 2026 and tracks 313 professional contacts across them, including 195 with verified work emails. Helsinki is the largest hub.

This list covers company matches for thermal energy system integrators 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
38Companies
313Contacts tracked
195Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest thermal energy system integrators based in Finland

Ranked by team size
Top 25 of 38 company matches for thermal energy system integrators 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 matchHelsinki, FinlandHQ recorded Nov 6, 2026501-1,00064 contacts →

Exact match

“Saipun toiminta kattaa kaiken talotekniikan – suunnittelun, projektoinnin ja ylläpidon sisältäen: lämmitys, ilmanvaihto- ja ilmastointijärjestelmät, käyttö- ja…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchVantaa, FinlandHQ recorded Nov 6, 202651-20044 contacts →

Exact match

“Äyräväinen Oy on LVIAE- ja sähkötekniikkaan erikoistunut insinööritoimisto, jonka palveluihin kuuluvat niin projektien suunnittelu, rakennuttaminen, kuin valvontakin.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchUusimaa, FinlandHQ recorded Nov 6, 202611-5027 contacts →

Exact match

“Höyrytys Oy on kokonaisvaltainen energiapalvelujen tuottaja, joka toteuttaa asiakkailleen joustavia energiaratkaisuja lämmön, höyryn ja sähkön tuotantoon.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLappeenranta, FinlandHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“With its power-to-heat thermal energy storage innovation - and as a one of the front runners in the world in this sector - Elstor Oy transforms steam and heat production to zero…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchHelsinki, FinlandHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“Autamme tekemään järkevimmät energiaremontit, niin että kiinteistön kustannukset pysyvät kurissa ja energialuokka saadaan vähintään vaadittuun D-luokkaan.”

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

Exact match

“Energytech on teollisuuden energiateknisten järjestelmien maahantuontiin, asennuksiin ja huoltoon erikoistunut yritys, joka toteuttaa asiakkailleen räätälöityjä energiaratkaisuja…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchFinlandHQ recorded Nov 6, 202651-20010 contacts →

Exact match

“Sähköneliö Oy provides comprehensive electrical and HVAC services, including installation and accessories, for new buildings and renovation projects alike.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchParkano, FinlandHQ recorded Nov 6, 202611-509 contacts →

Exact match

“Tekojaa provides solutions for industrial refrigeration, ventilation and heat pump systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchVantaa, FinlandHQ recorded Nov 6, 202611-509 contacts →

Exact match

“Innoair Oy myy, suunnittelee ja asentaa energiatehokkaat ilmastointi, ilmanvaihto- ja lämmitysratkaisut kuluttajille, teollisuuteen ja yrityksille.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchEspoo, FinlandHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Our mission in OptiWatti is to fight against climate change.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchEspoo, FinlandHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Tarjoamme LVIS-palvelut aina suunnittelusta asennukseen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchTurku, FinlandHQ recorded Nov 6, 202611-507 contacts →

Exact match

“Tipitek Oy on Turkulainen, lämmitys ja jäähdytysjärjestelmiin erikoistunut urakoitsija.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchTampere, FinlandHQ recorded Nov 6, 20261-106 contacts →

Exact match

“LVISIO on talotekniikkasuunnitteluun erikoistunut, ammattitaitoinen ja luotettava yritys.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchPyhtää, FinlandHQ recorded Nov 6, 20261-105 contacts →

Exact match

“Järkevän energiankäytön puolesta jo vuodesta 2006 Nanea Oy on energiatehokkuuden ja vastuullisten lämmitysratkaisujen edelläkävijä.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchRauma, FinlandHQ recorded Nov 6, 202611-504 contacts →

Exact match

“We are a finnish company and we provide our customers with comprehensive, tailor-made, energy-efficient solutions that usually relate to issues or needs arising from heat…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact 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
17Exact matchHelsinki, FinlandHQ recorded Nov 6, 20261-104 contacts →

Exact match

“Energiatehokkuuden parantaminen Useimmissa rakennuksissa voidaan energiatehokkuutta parantaa edullisilla teknisillä ratkaisuilla.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchHelsinki, FinlandHQ recorded Nov 6, 20261-104 contacts →

Exact match

“ASENSI supplies and designs HVAC and building services components and is the official importer of Valsir in Finland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchAkaa, FinlandHQ recorded Nov 6, 20261-103 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact 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
21Exact matchPorvoo, FinlandHQ recorded Nov 6, 20261-103 contacts →

Exact match

“RefCon Finland Oy is a HVAC company based out of Finland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchJyväskylä, FinlandHQ recorded Nov 6, 202611-503 contacts →

Exact match

“Karibu Oy on konsultoiva insinööritoimisto.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchTurku, FinlandHQ recorded Nov 6, 20261-103 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact 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
25Exact 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

Showing 25 of 38 thermal energy system integrators based in Finland

See the full list, filter by size, metro and specialty, and access 195 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Thermal energy system integrators based in Finland at a glance

As of Nov 6, 2026
62.3%Verified-email coverage
8.2Average contacts per company
1-10Median size (employees)
13.2%Largest-city concentration · Helsinki
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
19
11-50
16
51-200
2
501-1,000
1

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 38 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 “thermal energy system integrators” 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 195 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 “thermal energy system integrators”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many thermal energy system integrators are there based in Finland?

RevenueBase identified 38 company matches for thermal energy system integrators 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?

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

Which city has the most thermal energy system integrators?

Helsinki leads with 5 company records, followed by Turku (4) and Vantaa (4).

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 195 professional contacts with verified work emails tracked across these 38 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.

Ready to reach these companies? Verified emails and direct dials for all 38 thermal energy system integrators based in Finland. Start with a free account, no credit card.

Download this list →

Related lists

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.