For over 40 years, our service company has stood for the professional installation of windows, doors and sun protection systems, as well as their maintenance, repair and servicing in the Dresden area. We are proud that our long-standing team of around 20 employees has successfully mastered the challenges of recent years, and we look confidently toward the tasks ahead.
Our history
- 1985 – Founded as Thermo-Glas-Service by Peter Huttelmaier
- after 1989 – Established close cooperation with the window manufacturing company Hilzinger in Strasbourg
- 1996 – Founded Thermo-Glas-Service Neumann GmbH by son-in-law Ralf Neumann
- Coordination of several thousand service operations through excellent planning, friendly communication and maximum flexibility
- since 2023 – Joint management together with daughter and granddaughter Luisa Kröhl
- Nearly 40 years of success in a highly competitive market



The company Thermo-Glas-Service Huttelmaier was founded on August 1, 1985, by Peter Huttelmaier at its long-established company location at Bodenbacher Straße 46, 01277 Dresden, which has proven its value to this day. He laid the foundations for today’s company and established important business relationships that remain highly significant.
In the early years of the business, there was, for example, a very close business relationship with Helmut Hilzinger, who took over his parents’ company in 1976. As a former major customer of hilzinger GmbH, we are very proud that, despite the changes over time, we can continue to rely on a strong and successful partnership.
In December 1996, Thermo-Glas-Service Neumann GmbH was founded by Ralf Neumann based on these roots. Since its establishment, the company has developed into a recognized installation and service provider specializing in the installation of windows and doors, special and façade glazing, and sun protection systems.
The family-owned craft business has now been in family ownership for more than 40 years. With the transfer of the company to the third generation, the business was given a renewed opportunity to build on existing strengths, expand them, and rethink internal processes and structures. Since 2019, granddaughter and daughter Luisa Kröhl has been working in the company and, together with the entire team, successfully meets the daily challenges of TGS operations.



Our core values: reliability, quality, and loyalty.
- We value and appreciate fair and reliable interactions with our customers and suppliers.
- An important selection criterion for our suppliers is regional presence and flexibility.
- Through the professional renovation of windows, doors, glazing, and seals, we make a sustainable contribution to the energy efficiency of your property while simultaneously reducing your energy costs.
- Our service is active daily to ensure satisfied customers and tenants.
- All of our work is carried out by qualified specialists from a variety of trades.
As a service provider in the Dresden area, we place great importance on sourcing our materials from regional suppliers. Rentsch Holzhandel GmbH, for example, is a very reliable partner in this regard. Our larger construction projects are located in and around Dresden. Short distances enable a good work–life balance for our employees and help reduce unnecessary emissions.
Knowledge – Skills – Quality
We work with a professionally qualified staff of currently about 20 people in the professional areas of carpenters, locksmiths, metal workers, glaziers and bricklayers. The extensive experience and skills of our skilled workers coupled with the use of modern technology and effective working technologies of our engineers enable us to solve even extensive and complex tasks quickly and with high quality.
Our employees are our most important asset. Some employees have acquired additional qualifications over the years. Among them are certified specialists for hold-open systems, fire doors and gates, fire and smoke protection closures, specified electrical engineering activities and fire protection technicians. Perhaps you too will find your new challenge with us. We offer you challenging and exciting tasks in our family-owned company.






