Company lists · Data refreshed September 2026

Top 25 Solar water heater installation companies based in Belgium

Name: Solar water heater installation companies based in Belgium
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 18, 2026 224 companies tracked

RevenueBase identified 224 company matches for solar water heater installation companies associated with Belgium as of September 2026 and tracks 1,297 professional contacts across them, including 487 with verified work emails. Antwerp is the largest hub.

This list covers company matches for solar water heater installation companies associated with Belgium, 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 September 18, 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 Sep 18, 2026 How this list was built

224Companies

1,297Contacts tracked

487Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest solar water heater installation companies based in Belgium

Ranked by team size

Top 25 of 224 company matches for solar water heater installation companies based in Belgium, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 18, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Opteco	Exact match	Zonhoven, BelgiumHQ recorded Sep 18, 2026	11-50	58 contacts →
	Exact match “Met een ervaring van meer dan installaties heeft het management van Opteco de nodige kennis in huis om uw project te realiseren.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
2	Energyking	Exact match	Herent, BelgiumHQ recorded Sep 18, 2026	51-200	53 contacts →
	Exact match “EnergyKing werd in 2013 opgericht door twee ingenieurs: Lucas & Wiet.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
3	MR Solar	Exact match	Zwevegem, BelgiumHQ recorded Sep 18, 2026	51-200	51 contacts →
	Exact match “Efficiency Thanks to our advice focused on a sustainable ecosystem, we offer our customers a tailor-made energy solution, resulting in optimal efficiency in both the near and…” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
4	Insaver	Exact match	Houthalen, BelgiumHQ recorded Sep 18, 2026	51-200	45 contacts →
	Exact match “At Insaver, we guide you every step of the way toward a low-carbon future.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
5	The Energy Circle	Exact match	Hasselt, BelgiumHQ recorded Sep 18, 2026	201-500	40 contacts →
	Exact match “Van onderhoud & monitoring, elektrische installaties & groene stroom, tot waterbeheer & HVAC-systemen: The Energy Circle heeft alle expertise in huis om grote gebouwen en…” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
6	Sanitechniek	Exact match	Sint-katelijne-waver, BelgiumHQ recorded Sep 18, 2026	11-50	37 contacts →
	Exact match “Sanitechniek is dé specialist in professionele HVAC-en sanitaire installaties.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
7	Enerdeal By EDP	Exact match	Zaventem, BelgiumHQ recorded Sep 18, 2026	11-50	33 contacts →
	Exact match “Enerdeal by EDP supports industrial and public players in their energy transition, turning solar energy into a strategic lever for performance, sustainability and independence.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
8	Goessens	Exact match	Hannut, BelgiumHQ recorded Sep 18, 2026	51-200	31 contacts →
	Exact match “Goessens est une société spécialisée dans l'installation de systèmes de chauffage, de ventilation et de climatisation.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
9	Futech Bvba	Exact match	Tessenderlo, BelgiumHQ recorded Sep 18, 2026	11-50	26 contacts →
	Exact match “Futech is een zonnepaneleninstallateur op de Belgische residentiële en industriële markt.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
10	ESE	Exact match	Veurne, BelgiumHQ recorded Sep 18, 2026	51-200	24 contacts →
	Exact match “Op maat van elke individuele klant werkt ESE de technisch optimale en meest economische oplossing uit voor hun specifieke energie problemen en dit steeds vanuit een ecologisch…” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
11	Group VHC	Exact match	Overijse, BelgiumHQ recorded Sep 18, 2026	51-200	24 contacts →
	Exact match “Group VHC zorgt al meer dan 25 jaar voor slimme oplossingen in verwarming, koeling, ventilatie en zonne energie.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
12	Ecopuur	Exact match	9850, BelgiumHQ recorded Sep 18, 2026	11-50	23 contacts →
	Exact match “Ecopuur bekijkt het verbruikspatroon van je huidige of nieuwe woning.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
13	ENSYS	Exact match	Kapellen, BelgiumHQ recorded Sep 18, 2026	11-50	22 contacts →
	Exact match “As specialists in the field of renewable energy and energy efficiency, we offer unique proposals to both individuals and businesses.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
14	Belivert	Exact match	Zedelgem, BelgiumHQ recorded Sep 18, 2026	51-200	21 contacts →
	Exact match “Vraag gratis je offerte aan, Bespaar dankzij de zonnepanelen van BeliVert heel wat energiekosten.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
15	Polarsun	Exact match	Barchon, BelgiumHQ recorded Sep 18, 2026	11-50	20 contacts →
	Exact match “Chez Polarsun, nous concevons, installons et assurons le suivi de solutions énergétiques durables pour les particuliers, les entreprises et les collectivités.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
16	EGS Group	Exact match	Maasmechelen, BelgiumHQ recorded Sep 18, 2026	11-50	20 contacts →
	Exact match “has been active in realizing sustainable projects in Belgium and our neighboring countries since 2012.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
17	Energieconcepten	Exact match	Arendonk, BelgiumHQ recorded Sep 18, 2026	11-50	19 contacts →
	Exact match “Energieconcepten biedt duurzame energieoplossingen voor het verwarmen, ventileren, verlichten, sturen… van gebouwen.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
18	Verisol	Exact match	Lummen, BelgiumHQ recorded Sep 18, 2026	11-50	19 contacts →
	Exact match “Verisol is an expert in the installation of cleantech products including photovoltaic solar installations, solar thermal systems, heat pumps, airconditioning systems, isolation en…” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
19	Alfasun	Exact match	Ninove, BelgiumHQ recorded Sep 18, 2026	11-50	17 contacts →
	Exact match “nergie zonder zorgen Ga je bouwen?” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
20	Green Energy 4 Seasons S.A	Exact match	Marche-en-famenne, BelgiumHQ recorded Sep 18, 2026	11-50	17 contacts →
	Exact match “Green Energy 4 Seasons created in 2008 is the Walloon leader in photovoltaics.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
21	IQ Solar BE	Exact match	Evergem, BelgiumHQ recorded Sep 18, 2026	11-50	16 contacts →
	Exact match “IQ Solar specialiseert zich in het kwaliteitsvol installeren van zonnepanelen.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
22	LA Temperature Ideale	Exact match	Charleroi, BelgiumHQ recorded Sep 18, 2026	11-50	14 contacts →
	Exact match “LA TEMPERATURE IDEALE Spécialiste de l'installation, de la rénovation et du dépannage de chauffages, nous sommes à même de vous conseiller avant tout travaux que vous désiriez…” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
23	Intellisol	Exact match	Maaseik, BelgiumHQ recorded Sep 18, 2026	11-50	12 contacts →
	Exact match “Intellisol is een multitechnisch installatie bedrijf met eigen studiebureau uit Maaseik dat gespecialiseerd is in het ontwerpen en plaatsen van energiezuinige installaties, zonder…” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
24	Mars Solar	Exact match	BelgiumHQ recorded Sep 18, 2026	51-200	12 contacts →
	Exact match “Het MARS SOLAR team heeft ruim 5 jaar ervaring op het gebied van advisering, leveren en monteren van hernieuwbare energie.” Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
25	H&s Powersolutions	Exact match	Hasselt, BelgiumHQ recorded Sep 18, 2026	11-50	12 contacts →
	Exact match “H&S Powersolutions is a company that specializes in renewable energy.” Recorded in the RevenueBase company graph · Sep 18, 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 “solar water heater installation companies”. 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 224 solar water heater installation companies based in Belgium

See the full list, filter by size, metro and specialty, and access 487 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Solar water heater installation companies based in Belgium at a glance

As of Sep 18, 2026

37.5%Verified-email coverage

5.8Average contacts per company

1-10Median size (employees)

1.8%Largest-city concentration · Antwerp

Sep 18, 2026Page data refreshed

Companies by employee count

1-10

133

11-50

51-200

201-500

Email recency for this list is measured worldwide rather than for Belgium, so it is reported there. Company counts and contact totals on this page are exact for Belgium, over 224 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 Belgium whose business descriptions match “solar water heater installation companies” 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 487 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 September 18, 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 “solar water heater installation companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many solar water heater installation companies are there based in Belgium?

RevenueBase identified 224 company matches for solar water heater installation companies associated with Belgium as of September 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?

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

Which city has the most solar water heater installation companies?

Antwerp leads with 4 company records, followed by Arendonk (4) and Maasmechelen (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 487 professional contacts with verified work emails tracked across these 224 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 September 18, 2026.

Ready to reach these companies? Verified emails and direct dials for all 224 solar water heater installation companies based in Belgium. Start with a free account, no credit card.

Download this list →

Related lists

Solar water heater installation companies by geography

Browse the directory

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.