GS Gebaeudesystemtechnik GmbH operates wholesale and retail businesses as well as a skilled trades business for heating and sanitary systems. The company assembles installation-friendly heating kits from existing market products that enable homeowners to self-install, and it provides support ranging from detailed installation manuals to site supervision and commissioning. In addition, the company runs an installation division for conventional heating and sanitary installations in the Buerstadt area and a division for large and special construction sites that, together with subcontractors, covers multi-storey residential construction. A prefab-house division delivers and installs complete HLS systems in southern Germany as a subcontractor, and sister companies (GS Bauelemente, GS Waermesysteme) complement a nationwide sales and service network. GS Gebäudesystemtechnik GmbH is a family business.
Das Betreiben eines Groß- und Einzelhandels sowie Handwerksbetriebes für Heizung und Sanitär.
Converted using the official Destatis and Eurostat correspondence tables; ISIC Rev. 4 is the United Nations' international industry classification.
This summary was generated with the help of AI. See our Data Quality Notice. Report error?
Source: German Commercial Register (Handelsregister) Darmstadt Local Court, HRB 61743 (as of 30 October 2026)
| Name | Type | City |
|---|---|---|
| Thomas Nußbaum | Geschäftsführer(in) | Frettenheim |
| Harald Ofenloch | Geschäftsführer(in) | Bürstadt |
| Timo Ofenloch | Geschäftsführer(in) | Bürstadt |
Source: German Commercial Register (Handelsregister) Darmstadt Local Court, HRB 61743 (as of 30 October 2026)
| Year | Revenue | Profit | Balance | Employees |
|---|---|---|---|---|
| 2024 | Rohergebnis€12.5M2 | €539,670 | €8,376,291 | — |
| 2023 | Rohergebnis€13.8M2 | €772,992 | €9,207,545 | — |
| 2022 | Rohergebnis€11.8M2 | €376,130 | €7,300,045 | — |
| 2021 | Rohergebnis€10.3M2 | €38,809 | €6,736,991 | — |
| 2020 | Rohergebnis€10.2M2 | €918,951 | €6,804,628 | — |
| 2019 | Rohergebnis€8.6M2 | €526,633 | €6,718,164 | — |
| 2018 | Rohergebnis€10.5M2 | €2,176,134 | €7,484,987 | — |
| 2017 | Rohergebnis€8.4M2 | €110,765 | €5,097,539 | — |
| 2016 | Rohergebnis€7.2M2 | -€520,199 | €4,539,069 | — |
| 2015 | Rohergebnis€8.7M2 | €1,224,236 | €4,938,051 | — |
1 Small companies are not required to publish a profit-and-loss statement (§ 326 (1) HGB). The figure shown is the statutory ceiling under § 267 HGB where the balance-sheet total makes it binding — a company may exceed at most one of the three size criteria.
2 Rohergebnis nach § 276 HGB: Umsatzerlöse abzüglich Materialaufwand bzw. Herstellungskosten. Kleine und mittelgroße Kapitalgesellschaften dürfen diese Posten zusammenfassen; die Umsatzerlöse selbst sind dann nicht veröffentlicht und liegen über dem Rohergebnis.
Sign in to download data
Source: German Commercial Register (Handelsregister) Darmstadt Local Court, HRB 61743 (as of 30 October 2026)
Klum GmbH
Bad Camberg · Tätigkeiten der Großhandelsvermittlung von Installationsbedarf für Gas, Wasser, Heizung und Klimatechnik
Koberger Haustechnik GmbH
Cham · Gas-, Wasser-, Heizungs- sowie Lüftungs- und Klimainstallation
Gruber Innenausbau-Holzbau GmbH
Rötz · Tätigkeiten der Großhandelsvermittlung von Baustoffen und Anstrichmitteln
| Cost type | Amount | Share |
|---|---|---|
| Personnel Costs | €7,174,193 | 94.2% |
| Depreciation | €439,592 | 5.8% |
