| Ventilationsfirma IM AB CVR 5562981976 | BoardBoard of Directors | Since 2024 | — | Active |
| Projektuppdrag Syd AB CVR 5563675304 | BoardBoard of Directors | Since 2020 | — | Active |
| Imtech Ventilation Norr AB CVR 5563989176 | BoardBoard of Directors | Since 2019 | — | Dissolved |
| Luftkompaniet Sjöblom Aktiebolag CVR 5564106929 | BoardBoard of Directors | Since 2020 | — | Active |
| Örestadskyl Aktiebolag CVR 5565046603 | BoardBoard of Directors | Since 2020 | — | Active |
| Assemblin Ventilation Östergötland AB CVR 5565103933 | BoardBoard of Directors | Since 2019 | — | Dissolved |
| Ehlin & Larsson Aktiebolag CVR 5565200457 | BoardBoard of Directors | Since 2021 | — | Active |
| Imtech Ventilation Malmö AB CVR 5565781217 | BoardBoard of Directors | Since 2019 | — | Dissolved |
| Imtech Ventilation Helsingborg AB CVR 5566721311 | BoardBoard of Directors | Since 2019 | — | Dissolved |
| Imtech Ventilation Västerås AB CVR 5566807516 | BoardBoard of Directors | Since 2019 | — | Dissolved |
| GSJ VENTService AB CVR 5567203020 | BoardBoard of Directors | Since 2026 | — | Active |
| Imtech Ventilation Jönköping AB CVR 5567205637 | BoardBoard of Directors | Since 2019 | — | Dissolved |
| Assemblin Ventilation AB CVR 5567289177 | ManagementChief Executive Officer | Since 2020 | — | Active |
| Familjen Ekvall AB CVR 5567480933 | BoardBoard of Directors | Since 2022 | — | Active |
| Assemblin HVAC AB CVR 5567789010 | BoardBoard of Directors | Since 2021 | — | Active |
| Lindsells AB CVR 5568126006 | BoardBoard of Directors | Since 2022 | — | Active |
| Assemblin Installation Vent AB CVR 5590775747 | BoardBoard of Directors | Since 2021 | — | Active |
| Rosendahl Ögrens Kyl & Energi AB CVR 5590967054 | BoardBoard of Directors | Since 2026 | — | Active |
