List of HVAC Companies in Belgium

Last updated 5 November 2026

There are 18,799 HVAC companies in Belgium, one in every 127 Belgian companies. Most of them are small: nearly all have one to four people, and only 46 firms employ 50 people or more. One in thirteen HVAC firms is based in Antwerpen, Gent, Charleroi, Bruxelles and Anderlecht. Below you find the largest HVAC firms in Belgium, the cities where they cluster, how many started this year and which are the oldest. The full list with addresses, phone numbers and email is in our Belgian company database or through the KBO API.

18,799 companies indexed · Data counted on 5 November 2026

Companies18,7991 in127 Belgian companiesCities605Largest cityAntwerpen 550Sole traders34%Employees1-4 (95%)Revenue< $100K (55%)Email39%Phone51%Website38%

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A live view of all 18,799 HVAC firms, sorted by revenue. Narrow it by region, city, employee size, revenue, legal form or founding year, or search a firm by name.

Imtech Belgium Ou En Francais Imtech Belgique Ou En Neerlandais Imtech BelgieImtech Belgium Ou En Francais Imtech Belgique Ou En Neerlandais Imtech Belgie

	Company Name	Country	City	Address 1	State/Province	Postal Code	Website	Founding Year	Yearly Revenue in U.S. Dollars	Employees Total	Business Legal Type - Description	Number of Companies in Group	Company Registration Number
1	Imtech Belgium Ou En Francais Imtech Belgique Ou En Neerlandais Imtech Belgie	Belgium	Anderlecht	Boulevard Industriel 28	Bruxelles Capitale	1070	*****.be	1997	$222,885,234	552	Corporation	10	BE0402969474
2	Vma Sud	Belgium	Charleroi	Rue D'Edimbourg 19	Hainaut	6040	*****.be	2011	$104,660,397	327	Corporation	348	BE0427983202
3	Collignon Eng	Belgium	Erezée	Briscol 4	Luxembourg	6997	*****.net	1979	$101,900,863	361	Corporation	2349	BE0420578340
4	Callens Willy	Belgium	Paardenstad	Industrielaan 21	West Vlaanderen	8790	*****.eu	2020	$82,083,508	213	Corporation	12	BE0419765520
5	Six	Belgium	Izegem	Schardouwstraat 31	West Vlaanderen	8870	*****.be	2013	$75,368,711	198	Corporation	9	BE0418068020
6	Altebra	Belgium	Geraardsbergen	Hasseltkouter 53	Oost Vlaanderen	9500	*****.be	2020	$70,203,073	500	Corporation	22	BE0440797494
7	Boons Theo	Belgium	Arendonk	Hoge Mauw 1400	Antwerpen	2370	*****.be	2002	$63,599,739	110	Corporation	2	BE0478731721
8	Vergokan	Belgium	Oudenaarde	Meersbloem-melden 16	Oost Vlaanderen	9700	*****.com	2007	$61,054,265	107	Corporation	136	BE0422878131
9	Aquasecurity	Belgium	Aalst	Industrielaan 20	Oost Vlaanderen	9320	*****.be	1999	$49,815,016	129	Corporation	8	BE0426116842
10	Mr-Group	Belgium	Zwevegem	Pluim 7	West Vlaanderen	8550	*****.be	2011	$49,161,861	47	Corporation	5	BE0842496864
11	Thersa	Belgium	Mouscron	Drève Gustave Fache 5	Hainaut	7700	*****.be	2024	$46,375,973	142	Corporation	4	BE0479604226
12	Munters Belgium	Belgium	Mechelen	Oude Baan 3	Antwerpen	2800	*****.com	1952	$39,299,470	47	Corporation	135	BE0405845822
13	Clima & Partners	Belgium	Wijnegem	Blikstraat 4	Antwerpen	2110	*****.be	2023	$37,055,989	104	Corporation	22	BE0893272802
14	Quartier	Belgium	Kuurne	Pieter Verhaeghestraat 26	West Vlaanderen	8520	*****.be	2022	$34,556,147	73	Corporation	8	BE0405361416
15	Beltherm	Belgium	Zedelgem	De Arend 18	West Vlaanderen	8210	*****.be	2015	$34,306,474	113	Corporation	21	BE0450375255
16	Trox Belgium	Belgium	Anderlecht	Boulevard Paepsem 18g	Bruxelles Capitale	1070	*****.be	1967	$32,224,159	47	Corporation	N/A	BE0402981946
17	Koning	Belgium	Herent	Mechelsesteenweg 676	Vlaams Brabant	3020	*****.be	2008	$31,228,907	34	Corporation	18	BE0806516101
18	Isb Building Technics	Belgium	Saint-josse-ten-noode	Boulevard Du Roi Albert Ii 19	Bruxelles Capitale	1210	*****.be	1950	$29,288,846	85	Corporation	3	BE0402940869
19	Technigroup	Belgium	Herentals	Diamantstraat 3	Antwerpen	2200	*****.be	1978	$28,492,102	106	Corporation	4	BE0418095932
20	Gezel	Belgium	Buggenhout	Beukenstraat 160	Oost Vlaanderen	9255	*****.be	1979	$27,674,004	77	Corporation	36005	BE0419931014
21	Delta Thermic	Belgium	Herstal	Rue D'Abhooz 23	Liège	4040	*****.be	2019	$27,572,152	93	Corporation	17	BE0718718629
22	Stûv	Belgium	Profondeville	Rue Jules Borbouse 4	Namur	5170	*****.com	2017	$27,571,327	100	Corporation	7	BE0423958294
23	Contronect	Belgium	Merelbeke	Karel de Roosestraat 15	Oost Vlaanderen	9820	N/A	2023	$27,412,565	42	Corporation	36005	BE0803985092
24	Ets Jordan	Belgium	Farciennes	Rue de Fontenelle 33	Hainaut	6240	*****.be	1968	$25,180,879	104	Corporation	5	BE0401672248
25	Sanitechniek	Belgium	Sint-katelijne-waver	Drevendaal 30	Antwerpen	2861	*****.be	1984	$24,759,471	56	Corporation	65	BE0426444365

Showing 25 of 18,799 companies

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Where in Belgium?

Antwerpen has the most HVAC companies in Belgium (550), ahead of Gent (274), Charleroi (240), Bruxelles (209) and Anderlecht (181). Together the five hold one in thirteen of them. Relative to their size, Sint-Pieters-Leeuw, Genk and Zaventem have the most: 1.4 to 2.0 times the national share.

Cities by number of firms

605 Belgian cities have at least one HVAC firm; 475 have ten or more; 14 have exactly one. Click a city to set the lens.

Only here

Where they cluster

HVAC firms per 100 companies, in cities with at least 100 of them. The national share is 0.79. Sint-Pieters-Leeuw has 2.0 times the national share.

2.0×
1.4×
1.4×
1.1×
1.1×
1.1×
1.0×
1.0×
0.8×
0.6×
0.6×
0.6×
0.6×
0.6×

Dashed line: the national share. A filled dot is twice the national share or more.

By province 19 provinces

Province	Firms	%
Antwerpen	2,850	15%
Oost Vlaanderen	2,493	13%
West Vlaanderen	2,275	12%
Vlaams Brabant	2,192	12%
Hainaut	1,633	9%
Liège	1,573	8%
Limburg	1,518	8%
Bruxelles Capitale	1,241	7%
Namur	823	4%
Brabant Wallon	788	4%

Show all 19

Largest HVAC firms in Belgium

The biggest firms by staff and by revenue, the largest in Antwerpen, the biggest newcomers of 2026 and the oldest firms. Click a name for the record.

Imtech Belgium Ou En Francais Imtech Belgique Ou En Neerlandais Imtech Belgie is the largest HVAC firm in Belgium by headcount. 46 firms employ 50 people or more; 18 employ 100 or more.

1Anderlecht552 staff
2Geraardsbergen500 staff
3Erezée361 staff
4Kruibeke331 staff
5Charleroi327 staff
6Paardenstad213 staff
7Roeselare200 staff
8Izegem198 staff
9Braine-l'Alleud133 staff
10Aalst129 staff

By employee size · 17,640 firms with a known headcount

Employees	Firms	%
1-4	16,677	95%
5-9	511	3%
10-19	277	2%
20-49	129	0.7%
50-99	28	0.2%
100-199	12	<0.1%
200-499	5	<0.1%
500-999	1	<0.1%
1,000+	0	0%

95% have 1 to 4 people; 129 have 20 to 49; 46 have 50 or more.

By yearly revenue (USD)

Revenue	Firms	%
< $100K	8,912	55%
$100K-$500K	4,280	26%
$500K-$1M	2,751	17%
$1M-$5M	225	1%
$5M-$10M	11	<0.1%
$10M-$50M	55	0.3%
$50M-$100M	5	<0.1%
$100M-$500M	3	<0.1%

55% under $100,000; 225 between $1M and $5M; 74 above $5M.

Firm sizes in Belgium

Of the 17,640 Belgian HVAC firms with a known headcount, 16,677 (95%) have one to four people, 511 have five to nine, 406 have ten to 49 and 46 have 50 or more. Most firms turn over under $100,000 a year (8,912, 55%).

EU size bands · the grey line shows all Belgian companies

Micro under 1017,188 97%
Small 10 to 49406 2%
Medium 50 to 24945 0.3%
Large 250+1 <0.1%

Grey line: the share among all Belgian companies (98% have under ten staff).

firms turn over more than $5 million a year; 63 more than $10 million.

884

firms were entered in 2026.

How many HVAC companies are there in Belgium?

HVAC companies and HVAC firms in Belgium

18,799

5 November 2026

There are 18,799 HVAC companies and HVAC firms in Belgium in our data (5 November 2026). That is one in every 127 Belgian companies. About 4 new firms are entered in the register every working day this year (884 so far in 2026).

Structure

Single-site firms: 13,155 70%
Head offices: 3,102
Branch offices: 2,542

Classification

NACE-BEL 2008 code 4322, identical to NACE Rev. 2 4322. Our platform filter is NACE-BEL 2008 4322.

8,699 of the 18,799 are BV/SRL and NV/SA (46%); 6,452 are sole traders. They come from Kruispuntbank van Ondernemingen (KBO/BCE) and our Belgian register data, through the KBO API.

HVAC firms in Antwerpen

Antwerpen has 550 HVAC companies and HVAC firms, 0.5% of all 108,393 Antwerpen companies and 36% below the national share. Nearly all Antwerpen firms have fewer than five people; 1 has 50 or more. 44 new firms were entered in 2026, 33 date from before 1990.

Size

1-4 staff: 498 · 97%
5-9: 9 · 2%
10-19: 4 · 0.8%
20-49: 2 · 0.4%
50+: 1 · 0.2%

Legal form

Sole traders: 218 · 40%
Partnerships: 27 · 5%
BV/SRL and NV/SA: 233 · 42%
Other or none: 72 · 13%

Of the Belgian total: 2.9%
Of all Antwerpen companies: 0.5%
Against the national share: 0.6×

New

Entered 2026 so far: 44
Entered 2025: 64
Of Belgium's 2026 entries: 5.0%

Old

Before 1990: 33 · 6%
1990 or later: 517 · 94%
Of Belgium's pre-1990 firms: 2.8%

Reachable

Email: 165 · 30%
Phone: 204 · 37%
Website: 174 · 32%

Revenue (USD)

Under $100K: 280 · 58%
$100K-$500K: 126 · 26%
$500K-$1M: 66 · 14%
$1M and more: 7 · 1%

Largest

How many are on your street?

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The oldest firms in Belgium

Our data holds 0 Belgian HVAC firms from before 1900, 15 from before 1950 and 1,165 from before 1990.

1901
1. Liège
1911
1. Dilbeek
1918
1. Huy
1929
1. Charleroi
1936
1. Nazareth
1938
1. Charleroi

Older than you

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Move the slider to a year. Two live counts, scoped to this industry.

1990

1,165

Belgian HVAC firms date from before 1990

124

were entered in 1990

How reachable are they?

HVAC firms are easier to reach than the average Belgian company: 51% list a phone number and 38% a website.

Email7,307 39%
Phone9,507 51%
Website7,174 38%

Grey line: all Belgian companies (email 23%, phone 43%, website 27%).

The full list with these fields is in our Belgian company database.

Newcomers in Belgium in 2026

884 HVAC firms were entered in the Belgian register so far in 2026, about 4 a working day, after 1,424 in 2025. Belgium as a whole saw 108,068 new companies in 2026, so this industry takes 0.8% of the inflow.

1,1492022
1,2342023
1,2932024
1,4242025
8842026 so far

299 of this year's 884 are BV/SRL and NV/SA.

The biggest newcomers of 2026

The year is the register entry; an established firm that changes legal form appears as new.

1Ixelles6 staff
2Deinze5 staff
3Antwerpen5 staff
4Lebbeke5 staff
5Frameries2 staff

Sole traders or BV/SRL: how they are organised

One in three Belgian HVAC firms work as sole traders, against 32% of all Belgian companies. Half are BV/SRL and NV/SA.

Sole traders (eenmanszaak / entreprise individuelle)6,45234%
Partnerships (VOF/SNC and CommV/SComm)7134%
BV/SRL and NV/SA8,69946%
No form on record or other2,93516%

Single-site: 70%
Head offices: 3,102
Branches: 2,542

All Belgian companies: 32% sole traders, 9% partnerships, 28% BV/SRL and NV/SA.

How they compare

Next to related industries

There are 5 HVAC firms for every one of the plumbers in Belgium.

Industry	Firms	Website	1-4 staff
Landscapers	22,100	25%	96%
HVAC Companies	18,799	38%	89%
Masons	15,765	24%	92%
Roofers	9,992	35%	88%
Plasterers	4,458	28%	93%
Plumbers	3,559	41%	93%

In other countries

Belgium has more HVAC firms than Sweden or Ireland, and more per company than either.

Country	Firms	Per 1,000 cos.
Italy	57,331	8.2
The Czech Republic	28,995	8.2
Belgium	18,799	7.9
Sweden	9,937	5.4
Ireland	2,584	6.4

More countries →

Free sample: HVAC firms in Europe

Frequently asked questions

How many HVAC companies are there in Belgium?

There are 18,799 HVAC companies and HVAC firms in Belgium in our data, counted on 5 November 2026. That is one in every 127 Belgian companies.

Which is the largest HVAC firm in Belgium?

Imtech Belgium Ou En Francais Imtech Belgique Ou En Neerlandais Imtech Belgie in Anderlecht, with 552 staff.

Which Belgian city has the most HVAC companies?

Antwerpen, with 550, ahead of Gent (274), Charleroi (240), Bruxelles (209) and Anderlecht (181). Relative to its size, Sint-Pieters-Leeuw has the most: 2.0 times the national share.

How many HVAC firms are there in Antwerpen?

550, which is 0.5% of all 108,393 Antwerpen companies and 36% below the national share.

How big is a typical HVAC firm?

Small. 95% of the 17,640 firms with a known headcount have one to four people; 46 have 50 or more. Most turn over under $100,000 a year.

Are Belgian HVAC companies sole traders or companies?

One in three (6,452) are sole traders, 4% are partnerships and 46% (8,699) are BV/SRL and NV/SA.

How many HVAC firms started in 2026?

884 were entered in the Belgian register so far in 2026, after 1,424 in 2025. 299 of them are BV/SRL and NV/SA.

What is the oldest HVAC firm in Belgium?

Techn-O-Therm in Liège, 1901, followed by ZF CV Distribution Belgium in Dilbeek (1911) and Union Cooperative in Huy (1918). 0 firms date from before 1900.

Which industry code covers HVAC companies?

Belgian HVAC companies are classified under NACE-BEL 2008 code 4322, identical to NACE Rev. 2 code 4322. Our platform filters them on NACE-BEL 2008 4322.

Can I download the full list?

Yes. All 18,799 firms with address, phone, email, legal form, employees, revenue and founding year, as Excel, CSV or through the API.

Discover more: related industries, in other countries

The lists closest to this one. Every industry and city in Belgium is on the Belgium page.

Construction

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