Familiar know-how in new strength. Grüner becomes pit.
In the last quarter of 2025, Ing. Günter Grüner GmbH will operate under the pit brand in Austria. For customers, only the brand identity will change - everything else will remain the same.
From Q4 2025, pit will also be active in Austria - standardized, clear, future-proof.
Since the successful merger in 2020, pit-cup GmbH and Ing. Günter Grüner GmbH have been working together under one roof and continuously developing software solutions for the construction and real estate industry. With the step towards the uniform umbrella brand pit from Q4 2025, we are creating even more clarity in the market and bundling our strengths for the future.
For our customers, this means continuity in cooperation, extended solutions from a single source and a strong partner for all topics relating to CAFM, CAD/BIM/TGA and energy management.
We will guide you through these changes and ensure that you benefit from the advantages right from the start. In this article you will find all the relevant information, background information and answers to your questions.
Why the rebrand?
Clarity
Future security
Combined strength
An expanded portfolio with more power for your projects.
What stays the same & what changes?
- Familiar contacts are retained.
- Proven solutions will continue to be further developed with the highest quality and innovative strength.
- Support and service will remain available as usual.
- The legal basis and existing contracts remain valid.
- Extended product range and uniform D-A-CH orientation offer more power for your projects.
Joint development
Since the merger in 2020, we have achieved a great deal as the pit Group: teams and processes have been more closely integrated, products have been further developed and joint events such as the user meeting at the Technik Museum Sinsheim have been successfully implemented. This positive development shows how strong we can be together as a unit.
Find out more about the pit group.
Our path to the pit umbrella brand
→ 1989 (Green)
Günter Grüner and his wife Anette start selling SOLAR-COMPUTER calculation programs for technical building equipment (TGA) in Telfs (Austria). First users: Ortner (Innsbruck), ATP, Allplan - loyal customers to this day.
→ 1991 (pit)
Foundation of pit-cup GmbH in Heidelberg by Kurt Weber. The release of pitCAD 1.0 marked the beginning of the success story of an innovative building technology software that quickly won over numerous planning offices and laid the foundation for further development.
→ 2010 (Green)
Günter Grüner founds Ing. Günter Grüner GmbH in 2010. Together with Managing Director Robert Umshaus, this paves the way for a successful future.
→ 2020 (pit)
Founder of pit-cup GmbH, Mr. Kurt Weber, retires. Ing. Günter Grüner GmbH takes over the majority of pit-cup GmbH.
→ 2022 (pit group)
Johannes Meßner-Haidenthaler and Robert Umshaus jointly manage Ing. Günter Grüner GmbH and pit-cup GmbH. Step by step, company processes are harmonized and standardized in order to make optimal use of synergies and increase efficiency.
→ 2025 (pit Group)
Ing. Günter Grüner GmbH operates under the umbrella brand pit for a uniform brand image, clarity and future security.
Stronger together
Future security
Consistent end-to-end processes from the digital twin in planning through to operation reduce media disruptions and ensure consistent, reliable data.
Combined strength
pit Group
The pit Group is one of the largest providers in the D-A-CH region when it comes to software solutions for the digital building twin. From planning, consulting, implementation and training to implementation and use. New, innovative technologies such as artificial intelligence, analytics and the cloud are just as much a part of our daily business as agile methods and reliability towards our customers.
With our smart solutions from the pitEcoSystem+, we provide our customers and partners with a secure data port in which all relevant building and property data is managed and processes relating to the property are supported consistently and efficiently. We are happy to support you in setting up your digital building twin. As part of the pit Group, we have over 120 digitalization and process experts in the D-A-CH region at your disposal.
Our view to the future
The joint brand identity is an important step towards positioning pit as a full-service provider for the planning, construction and operation of buildings in the long term. We are making targeted investments in innovation, digital solutions and the expansion of our market presence. Our website (pit.de) will also be given a fresh, modern design.
We would like to thank you for your trust and look forward to taking this next step together with you - under the strong brand of pit.
Frequently asked questions
What does the rebranding mean in concrete terms?
→ From the last quarter of 2025, Ing. Günter Grüner GmbH will operate under the umbrella brand pit in Austria. For our customers, this means a uniform brand identity, clear recognition and an expanded portfolio - CAFM, CAD/BIM/TGA and energy management from a single source.
Who runs the companies today?
→ Robert Umshaus and Johannes Meßner-Haidenthaler have been jointly managing the pit Group since January 2022.
What are the advantages of rebranding?
→ The combined strength creates end-to-end digital workflows along the entire building life cycle, a stronger market presence and more innovative power for new solutions.
What remains the same?
→ Nothing will change for our customers in their day-to-day business:
Proven software solutions remain unchanged.
Personal contacts are still available.
All existing contracts remain fully valid.
Our experts in facility management and energy controlling
Alexandra
Pride
Rüdiger Kauermann
Mario
Miller
Our experts in facility management and energy controlling
Axel
Lime
CAD/BIM support and training
Andreas
Strong
Mattheias
Pirchmoser
Stefan
Mayer
pitEcoSystem+
Our service portfolio for digital and sustainable real estate management.
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