Technische Gebaeudeausruestung TGA GmbH, based in Georgenthal OT Leina, was founded in November 2001 and supplies and installs building services systems (e.g. heating, sanitary, ventilation, climate/chilling technology, GA-MSR, 50 Hz, insulation, fire alarm systems, SAA) including planning services. Approximately 30% of services are provided with in-house staff, the remainder via subcontractors, temporary workers and leasing firms, and the main client is Deutsche Bahn AG for which the company works nationwide. For fiscal year 2023 the company reported total output (Gesamtleistung) of 24,191 T€ and a net profit of 2,336 T€; the reported equity ratio is 72% and cash balances amount to 3,759 T€.
Lieferung und Montage von Heizungs-, Sanitär-, Elektro- und Lüftungsanlagen, Fertigung von Baugruppen für Anlagen, Projektsteuerung, Bauüberwachung, Service und Handel.
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) Jena Local Court, HRB 112053 (as of 5 November 2026)
| Name | Type | City |
|---|---|---|
| Maik Werner | Geschäftsführer(in) | Georgenthal OT Leina |
Source: German Commercial Register (Handelsregister) Jena Local Court, HRB 112053 (as of 5 November 2026)
| Date | Event Type | Event |
|---|---|---|
| 20.04.2020 | Business Address Change | Lange Seite 45c, 99887 Georgenthal OT Leina |
| 27.02.2020 | Registered Seat Change | In Ausführung der Gebietsreform geändert, |
| 26.04.2019 | Company Name Change | Technische Gebäudeausrüstung TGA GmbH |
| Date | Type | Change | Total Capital |
|---|---|---|---|
| 29.06.2006 | Share Capital Set | — | 25.000 € |
| Date | Contract | Value |
|---|---|---|
| 2.11.2026 | Supplier · DB Netz AG (Bukr 16) | — |
| 23.9.2026 | Supplier · DB InfraGO AG – Geschäftsbereich Personenbahnhöfe (Bukr 11) | — |
| 25.8.2026 | S-Bahn München-MPAL_Neubau Werkstatt- und Betriebsgebäude_VE 3.5.2 TGA (HKLS, Druckluft, Medienver) Supplier · DB Regio AG (Bukr 12) | 20.464.601 € |
Source: German Commercial Register (Handelsregister) Jena Local Court, HRB 112053 (as of 5 November 2026)
| Year | Revenue | Profit | Balance | Employees |
|---|---|---|---|---|
| 2024 | Rohergebnis€10.3M2 | €3,550,614 | €9,820,824 | — |
| 2023 | Rohergebnis€9.3M2 | €2,344,517 | €7,249,794 | — |
| 2022 | Rohergebnis€13.2M2 | €3,243,253 | €8,082,593 | — |
| 2021 | ≤ €12M1 | — | €7,005,076 | — |
| 2020 | ≤ €12M1 | — | €7,162,704 | — |
| 2019 | small company1 | — | €4,740,548 | — |
| 2018 | ≤ €12M1 | — | €10,995,788 | — |
| 2017 | ≤ €12M1 | — | €11,020,331 | — |
| 2016 | ≤ €12M1 | — | €11,647,244 | — |
| 2015 | ≤ €12M1 | — | €11,399,307 | — |
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) Jena Local Court, HRB 112053 (as of 5 November 2026)
Ortner Reinraumtechnik GmbH Zweigniederlassung Deutschland
Wiesbaden · Gas-, Wasser-, Heizungs- sowie Lüftungs- und Klimainstallation
Gottfried Braun GmbH
Baiersbronn · Gas-, Wasser-, Heizungs- sowie Lüftungs- und Klimainstallation
Dörr GmbH
Saalfeld · Gas-, Wasser-, Heizungs- sowie Lüftungs- und Klimainstallation
| Cost type | Amount | Share |
|---|---|---|
| Personnel Costs | €3,860,476 | 92.6% |
| Depreciation | €308,753 | 7.4% |
| Interest & Similar | €329 | 0.0% |
