Siempelkamp Industrial Fans GmbH (formerly VENTAPP GmbH) is a 100% subsidiary of Siempelkamp Maschinen- und Anlagenbau GmbH and has been active in fan and apparatus manufacturing for over 40 years. The product range is focused on heavy industrial fans and industrial dampers; apparatus manufacturing was organized as contract manufacturing and will be discontinued in its previous scope as of 31.12.2024. The service division primarily covers spare parts such as replacement impellers and couplings as well as services from maintenance and rebalancing to overhaul or conversion on site. In 2024, 39.2% of business related to intercompany orders and 60.8% to third-party customers; the company joined the Siempelkamp group's cash pooling in 2024.
Die Herstellung und der Vertrieb von Industrie-Ventilatoren und Apparaturen.
Converted using the official Destatis and Eurostat correspondence tables; ISIC Rev. 4 is the United Nations' international industry classification.
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Source: German Commercial Register (Handelsregister) Krefeld Local Court, HRB 14006 (as of 31 October 2026)
| Name | Type | City |
|---|---|---|
| Youssef Moutamassik | Geschäftsführer(in) | Pulheim |
Source: German Commercial Register (Handelsregister) Krefeld Local Court, HRB 14006 (as of 31 October 2026)
| Date | Event Type | Event |
|---|---|---|
| 07.05.2025 | Company Name Change | Siempelkamp Industrial Fans GmbH |
| 07.05.2025 | Gesellschaftsvertrag amended | Gesellschaftsvertrag |
| 10.04.2024 | Gesellschaftsvertrag amended | Gesellschaftsvertrag |
| Date | Type | Change | Total Capital |
|---|---|---|---|
| 13.08.2012 | Share Capital Set | — | 725.000 € |
Source: German Commercial Register (Handelsregister) Krefeld Local Court, HRB 14006 (as of 31 October 2026)
| Year | Revenue | Profit | Balance | Employees |
|---|---|---|---|---|
| 2024 | €17,357,084 | -€13,239 | €6,256,570 | — |
| 2023 | €21,443,971 | €1,324,163 | €7,005,472 | — |
| 2022 | €20,934,804 | €242,250 | €8,059,655 | — |
| 2021 | €18,435,570 | -€36,672 | €6,492,965 | — |
| 2020 | €19,563,830 | -€148,900 | €6,776,871 | — |
| 2019 | €21,577,230 | €22,724 | €6,404,610 | — |
| 2018 | €23,295,111 | €570,220 | €9,063,677 | — |
| 2017 | €18,250,220 | €386,226 | €7,727,281 | — |
| 2016 | €12,529,013 | €96,745 | €5,634,357 | — |
| 2015 | €14,274,780 | -€21,127 | €5,996,670 | — |
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Source: German Commercial Register (Handelsregister) Krefeld Local Court, HRB 14006 (as of 31 October 2026)
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| Cost type | Amount | Share |
|---|---|---|
| Personnel Costs | €6,509,562 | 43.9% |
| Material Costs | €8,092,200 | 54.6% |
| Depreciation | €212,040 | 1.4% |
| Interest & Similar | €16,188 | 0.1% |
