| Samsons rör Aktiebolag CVR 5560909854 | BoardBoard of Directors | Since 2024 | — | Active |
| Bankeryds Rör Aktiebolag CVR 5562765270 | BoardBoard of Directors | Since 2024 | — | Active |
| JOLAB Aktiebolaget VVS-Installatör CVR 5562813302 | BoardBoard of Directors | Since 2023 | — | Dissolved |
| ROSLAGENS VÄRMEMONTAGE AKTIEBOLAG CVR 5563287753 | BoardBoard of Directors | Since 2024 | — | Active |
| Botkyrka VVS & Fastighetsservice AB CVR 5564005808 | BoardBoard of Directors | Since 2024 | — | Dissolved |
| Johansson o. Gunverth VVS- och El Aktiebolag CVR 5564017894 | BoardBoard of Directors | Since 2024 | — | Active |
| Essen Rör Aktiebolag CVR 5564593431 | BoardBoard of Directors | Since 2024 | — | Dissolved |
| Eskilstuna Kommunföretag Aktiebolag CVR 5565317293 | BoardBoard of Directors | Since 2020 | — | Active |
| J. Wretvall Rörservice AB CVR 5565480299 | BoardBoard of Directors | Since 2024 | — | Active |
| Industri och Värmemontage Werme AB CVR 5565486411 | BoardBoard of Directors | Since 2024 | — | Active |
| P L Energi & Bygg i Åmmeberg AB CVR 5565928875 | BoardBoard of Directors | Since 2024 | — | Active |
| Vantec System AB CVR 5566050224 | BoardBoard of Directors | Since 2024 | — | Active |
| Kalmar VVS- & El-Montage AB CVR 5566149166 | BoardBoard of Directors | Since 2024 | — | Active |
| Premea AB CVR 5567936041 | BoardBoard of Directors | Since 2025 | — | Active |
| Grillby & F100 Rör AB CVR 5568223027 | BoardBoard of Directors | Since 2024 | — | Active |
| ENEXERGI AB CVR 5568731979 | BoardBoard of Directors | Since 2024 | — | Active |
| El & Installationsteknik i Stockholm AB CVR 5569278061 | BoardBoard of Directors | Since 2024 | — | Dissolved |
| SDC Stockholm Design & Construction AB CVR 5569806960 | BoardBoard of Directors | Since 2024 | — | Dissolved |
| Eskilstuna Logistik och Etablering Aktiebolag CVR 5590486188 | BoardBoard of Directors | Since 2021 | — | Active |
| Assemblin VS Energioptimering AB CVR 5591377600 | BoardBoard of Directors | Since 2024 | — | Active |
