Company lists · Data refreshed September 2026

Top 25 Ventilation system contractors based in Belgium

Name: Ventilation system contractors based in Belgium
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 212 companies tracked

RevenueBase identified 212 ventilation system contractors headquartered in Belgium as of September 2026 and tracks 1,400 professional contacts across them, including 661 with verified work emails. Genk is the largest hub.

This list covers ventilation system contractors headquartered in Belgium, 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 19, 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 19, 2026 86% judged on-target in blind review

212Companies

1,400Contacts tracked

661Verified emails

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The 25 largest ventilation system contractors based in Belgium

Ranked by team size

Top 25 of 212 ventilation system contractors based in Belgium, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to ventilation system contractors: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Duco Ventilation & SUN Control	Strong evidence	Veurne, BelgiumHQ checked Sep 19, 2026	201-500	153 contacts →
	Strong evidence “DUCO Ventilation & Sun Control is dedicated to promoting health through its advancements in ventilation and solar shading systems, always prioritising optimal occupant comfort and…” Source: RevenueBase Database · checked Sep 19, 2026
2	Cairox Belgium	Partial evidence	Zaventem, BelgiumHQ checked Sep 19, 2026	51-200	129 contacts →
	Partial evidence “CAIROX BELGIUM is a leading supplier of Heating, Ventilation and Air Conditioning products (HVAC).” Source: RevenueBase Database · checked Sep 19, 2026
3	Climagroup	Partial evidence	Alken, BelgiumHQ checked Sep 19, 2026	201-500	66 contacts →
	Partial evidence “Professionele HVAC-expert, gericht op jouw sector Climagroup is dé referentiepartner voor klimatisatie en ventilatie.” Source: RevenueBase Database · checked Sep 19, 2026
4	JUVAH	Partial evidence	Sint-lenaarts, BelgiumHQ checked Sep 19, 2026	51-200	49 contacts →
	Partial evidence “Efficiënte ventilatie, daar tekenen wij voor!” Source: RevenueBase Database · checked Sep 19, 2026
5	Sanitechniek	Indirect evidence	Sint-katelijne-waver, BelgiumHQ checked Sep 19, 2026	11-50	37 contacts →
	Indirect evidence “Sanitechniek is dé specialist in professionele HVAC-en sanitaire installaties.” Source: RevenueBase Database · checked Sep 19, 2026
6	Goessens	Strong evidence	Hannut, BelgiumHQ checked Sep 19, 2026	51-200	31 contacts →
	Strong evidence “Goessens est une société spécialisée dans l'installation de systèmes de chauffage, de ventilation et de climatisation.” Source: RevenueBase Database · checked Sep 19, 2026
7	Hamster Cleaning	Indirect evidence	Genk, BelgiumHQ checked Sep 19, 2026	51-200	30 contacts →
	Indirect evidence “Hamster Cleaning provides professional cleaning and inspection services of air ducts.” Source: RevenueBase Database · checked Sep 19, 2026
8	GEZEL	Partial evidence	Buggenhout, BelgiumHQ checked Sep 19, 2026	51-200	29 contacts →
	Partial evidence “Grote of kleine vragen naar verwarming, ventilatie, koeling of sanitair?” Source: RevenueBase Database · checked Sep 19, 2026
9	Ventilair Group Belgium	Partial evidence	Kuurne, BelgiumHQ checked Sep 19, 2026	11-50	26 contacts →
	Partial evidence “Since 2005, we have been pursuing the (further) development of innovative systems that contribute to the comfort of your living environment, more specifically a healthy indoor…” Source: RevenueBase Database · checked Sep 19, 2026
10	Quartier NV	Partial evidence	Kuurne, BelgiumHQ checked Sep 19, 2026	51-200	24 contacts →
	Partial evidence “Quartier is een installatiebedrijf uit Zuid West-Vlaanderen actief in centrale verwarming, sanitair, ventilatie en koeling.” Source: RevenueBase Database · checked Sep 19, 2026
11	CTSM	Indirect evidence	Mont-saint-guibert, BelgiumHQ checked Sep 19, 2026	11-50	21 contacts →
	Indirect evidence “CTSM is a construction company based in 45/34 Rue des Sablières, 1435 Mont-Saint-Guibert, Belgium.” Source: RevenueBase Database · checked Sep 19, 2026
12	Beltherm	Indirect evidence	Zedelgem, BelgiumHQ checked Sep 19, 2026	51-200	20 contacts →
	Indirect evidence “Beltherm is gespecialiseerd in het leveren en plaatsen van luchtbehandelingsinstallaties en het produceren en plaatsen metalen luchtkanalen, roosters, schouwen en alle toebehoren…” Source: RevenueBase Database · checked Sep 19, 2026
13	Hooyberghs Hvac	Indirect evidence	Turnhout, BelgiumHQ checked Sep 19, 2026	11-50	20 contacts →
	Indirect evidence “Hooyberghs HVAC, een merk van VINCI Energies, ontwerpt en bouwt technische installaties op maat, volgens de wensen van de klant.” Source: RevenueBase Database · checked Sep 19, 2026
14	Isolution	Partial evidence	Namur, BelgiumHQ checked Sep 19, 2026	11-50	17 contacts →
	Partial evidence “ISOLUTION est une société spécialisée dans l'isolation et la ventilation de bâtiment pour particuliers et professionnels, et ce depuis plus de 12 ans Aujourd'hui, Isolution compte…” Source: RevenueBase Database · checked Sep 19, 2026
15	DE Kobra	Strong evidence	Opwijk, BelgiumHQ checked Sep 19, 2026	51-200	17 contacts →
	Strong evidence “De Kobra is uw one-stop shopping adres voor systemen en service op het gebied van ventilatie voor keukens en verbruikszalen.” Source: RevenueBase Database · checked Sep 19, 2026
16	Pure AIR	Partial evidence	Winterslag, BelgiumHQ checked Sep 19, 2026	11-50	17 contacts →
	Partial evidence “Pure Air is een jonge en dynamische firma gespecialiseerd in het plaatsen, reinigen en onderhouden van ventilatiesystemen.” Source: RevenueBase Database · checked Sep 19, 2026
17	Climawest NV	Indirect evidence	Zwevegem, BelgiumHQ checked Sep 19, 2026	11-50	16 contacts →
	Indirect evidence “Climawest NV is an installation company specialized in HVAC applications for businesses, offices, industry, retail, and private construction.” Source: RevenueBase Database · checked Sep 19, 2026
18	Bondec BV	Indirect evidence	Wommelgem, BelgiumHQ checked Sep 19, 2026	11-50	16 contacts →
	Indirect evidence “Bondec bvba is een gerenommeerd installatiebedrijf sinds 1969.” Source: RevenueBase Database · checked Sep 19, 2026
19	Stokjes NV	Partial evidence	Tessenderlo, BelgiumHQ checked Sep 19, 2026	51-200	16 contacts →
	Partial evidence “Stokjes nv is al jaren gespecialiseerd in het ontwerpen en uitvoeren van ventilatiesystemen voor onder andere- Woningen - Winkels - Kantoren - Fabrieken - Andere…” Source: RevenueBase Database · checked Sep 19, 2026
20	Airquality Belgium	Partial evidence	Duffel, BelgiumHQ checked Sep 19, 2026	11-50	14 contacts →
	Partial evidence “Airquality is reeds jaren een gevestigde waarde in de wereld van airconditioning, verwarming en ventilatie.” Source: RevenueBase Database · checked Sep 19, 2026
21	Technical Maintenance Service NV	Indirect evidence	Ternat, BelgiumHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “TMS – Technical Maintenance Service, opgericht in 1995, is een ervaren partner in HVAC, koel- en sanitaire installaties voor professionele en industriële omgevingen.” Source: RevenueBase Database · checked Sep 19, 2026
22	Delbrassine SA	Indirect evidence	Petit-rechain, BelgiumHQ checked Sep 19, 2026	51-200	14 contacts →
	Indirect evidence “Qui sommes-nous?” Source: RevenueBase Database · checked Sep 19, 2026
23	TM Technics	Partial evidence	Genk, BelgiumHQ checked Sep 19, 2026	11-50	13 contacts →
	Partial evidence “Industriële ventilatie?” Source: RevenueBase Database · checked Sep 19, 2026
24	Comfort Home Ventilatiesystemen	Partial evidence	Tielt, BelgiumHQ checked Sep 19, 2026	11-50	13 contacts →
	Partial evidence “Comfort Home is gespecialiseerd in het plaatsen van ventilatie in woningen, appartementen en kantoren.” Source: RevenueBase Database · checked Sep 19, 2026
25	Naessens Hvac	Partial evidence	Deerlijk, BelgiumHQ checked Sep 19, 2026	11-50	13 contacts →
	Partial evidence “Naessens HVAC is installateur van totale HVAC-S projecten, met specialisatie in installatie van warmtepompen en ventilatie.” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: ventilation system contractors. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names ventilation system contractors.
Partial evidence: Its own public description names part of ventilation system contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name ventilation system contractors. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 212 ventilation system contractors based in Belgium

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Ventilation system contractors based in Belgium at a glance

As of Sep 19, 2026

47.2%Verified-email coverage

6.6Average contacts per company

1-10Median size (employees)

3.8%Largest-city concentration · Genk

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

113

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 212 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 ventilation system contractors, 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 Belgium whose own description of what they do matches “ventilation system contractors”. 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 ventilation system contractors), 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 ventilation system contractors, and records with no verified work email. Companies headquartered outside Belgium 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, 661 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 19, 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 ventilation system contractors, 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 ventilation system contractors are there based in Belgium?

RevenueBase identified 212 ventilation system contractors headquartered in Belgium 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?

Duco Ventilation & SUN Control, headquartered in Veurne, tops this list with the largest team on record.

Which city has the most ventilation system contractors?

Genk leads with 8 headquartered companies, followed by Bruxelles (4) and Wommelgem (4).

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 661 verified decision-maker contacts tracked across these 212 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 19, 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.