Plumbing, heat and air-conditioning installation
8,119 Belgian companies whose main activity falls under NACE code 4322 have filed annual accounts. Their median solvency is 50.8% for financial year 2024.
Sector medians
Computed by IdonisDistribution across the sector's companies for financial year 2024: a quarter of companies sit below the 1st quartile, half below the median, three quarters below the 3rd quartile.
| Indicator | 1st quartile | Median | 3rd quartile | Companies |
|---|---|---|---|---|
| Solvency | 28.5% | 50.8% | 71.9% | 7,309 |
| Current ratio | 1.19 | 1.94 | 3.52 | 7,241 |
| ROE | 2.6% | 14.6% | 34.7% | 6,838 |
| Equity | 33,919 € | 97,779 € | 258,509 € | 7,324 |
| Total assets | 91,916 € | 217,305 € | 534,682 € | 7,319 |
| Net result | 1,069 € | 14,555 € | 45,737 € | 7,321 |
| Headcount (avg FTE) | 1.0 | 2.1 | 5.6 | 2,727 |
Medians computed by Idonis from annual accounts filed with the National Bank, all sizes combined. The same panel is the sector benchmark on every company page. Method
Largest companies: Plumbing, heat and air-conditioning installation
Ranked by total assets in the latest filed accounts. This is a size criterion, not an assessment.
| # | Company | Total assets | Revenue | Equity | FTE | Year |
|---|---|---|---|---|---|---|
| 1 | Altebra 9500 Geraardsbergen | €165.2m | €60.6m | €34.2m | 101.3 | 2025 |
| 2 | Imtech Belgium OU EN Francais Imtech Belgique OU EN Neerlandais Imtech Belgie 1070 Anderlecht | €99.2m | €192.3m | €37.5m | 568.2 | 2025 |
| 3 | VMA SUD 6040 Charleroi | €54.9m | €90.3m | €11.1m | 330.4 | 2025 |
| 4 | Bumaco Koeltechniek 3110 Rotselaar | €31.8m | €95.4m | €18.5m | 269.3 | 2025 |
| 5 | SIX 8870 Izegem | €31.8m | €65.0m | €13.5m | 198.4 | 2025 |
| 6 | Boons Theo 2370 Arendonk | €26.5m | €54.9m | €8.06m | 92.6 | 2025 |
| 7 | Munters Belgium 2800 Mechelen | €25.9m | €37.2m | €6.76m | 45.9 | 2024 |
| 8 | Aquasecurity 9320 Aalst | €22.8m | €43.0m | €13.6m | 133.8 | 2025 |
| 9 | MR-Group 8550 Zwevegem | €21.1m | €42.2m | €8.39m | 40.8 | 2025 |
| 10 | Full House 8800 Roeselare | €19.1m | €8.57m | €1.06m | 108.6 | 2025 |
| 11 | DE Meyer 9150 Beveren-Kruibeke-Zwijndrecht | €17.6m | €12.6m | €17.2m | 12.8 | 2025 |
| 12 | Clima & Partners 2110 Wijnegem | €16.6m | €32.0m | €3.55m | 101.5 | 2025 |
| 13 | S.AIR 9308 Aalst | €16.0m | €20.3m | €4.15m | 46.0 | 2025 |
| 14 | Lambert, DRY Cleaning AND Laundry Equipment 8700 Tielt | €15.4m | €22.9m | €7.63m | 53.8 | 2025 |
| 15 | Jansen Cleanrooms & Labs 3670 Oudsbergen | €14.1m | €30.5m | €3.67m | 59.4 | 2024 |
| 16 | Delta Thermic 4040 Herstal | €13.4m | €23.8m | €2.88m | 94.7 | 2025 |
| 17 | Etablissements Collin - Lucy 5555 Bièvre | €13.3m | €16.4m | €8.50m | 16.2 | 2025 |
| 18 | Weishaupt 1070 Anderlecht | €13.3m | €22.3m | €7.63m | 76.0 | 2025 |
| 19 | ISB Building Technics 1210 Saint-Josse-ten-Noode | €13.2m | €25.3m | €2.73m | 87.8 | 2025 |
| 20 | Beltherm 8210 Zedelgem | €13.1m | €29.6m | €5.74m | 116.7 | 2025 |
Where are they based?
Municipalities with the most
- 1070 Anderlecht68
- 3600 Genk66
- 1000 Brussels51
- 1180 Uccle49
- 2960 Brecht (Sint-Job-In-'t-Goor, Sint-Lenaarts)44
- 3550 Heusden-Zolder (Heusden, Zolder)44
- 8800 Roeselare (Beveren, Oekene, Rumbeke)44
- 2100 Antwerp (Deurne)41
- 8400 Ostend (Stene, Zandvoorde)41
- 1600 Sint-Pieters-Leeuw (Oudenaken, Sint-Laureins-Berchem)40
- 1030 Schaerbeek39
- 9200 Dendermonde (Appels, Baasrode, Grembergen, …)39
Related sectors
← The whole Specialised construction activities sector (NACE 43)
- 4321 Electrical installation10,596
- 4332 Joinery installation8,235
- 4399 Other specialised construction activities n.e.c.5,404
- 4341 Roofing activities3,877
- 4312 Site preparation3,076
- 4334 Painting and glazing2,817
- 4333 Floor and wall covering2,432
- 4335 Other building completion and finishing2,039
- 4331 Plastering1,662
- 4324 Other construction installation1,374
- 4323 Installation of insulation1,222
- 4391 Masonry and bricklaying activities993
Frequently asked questions
How many Plumbing, heat and air-conditioning installation companies are there in Belgium?
8,119 Belgian companies whose main activity falls under NACE code 4322 (Plumbing, heat and air-conditioning installation) have filed annual accounts with the National Bank.
What is the median solvency in Plumbing, heat and air-conditioning installation?
For financial year 2024, median solvency (equity over total assets) is 50.8%. The middle half of companies lies between 28.5% and 71.9% (7,309 companies).
What is the largest company in Plumbing, heat and air-conditioning installation?
By total assets, it is Altebra (€165.2m, financial year 2025).
Where are Plumbing, heat and air-conditioning installation companies based?
The municipalities with the most: Anderlecht (68), Genk (66), Brussels (51).
Analyse companies in Plumbing, heat and air-conditioning installation
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Open the full file →Active companies (legal entities) that have filed at least one set of annual accounts, based on the Crossroads Bank for Enterprises and the National Bank of Belgium. The sector is the main activity in the register; the municipality is that of the registered office. Data updated on 10 Oct 2026.