At your service for over 30 years!

2022
Group-wide work for industrial companies

The development of special energy solutions and implementations for industry is increasing the international demand for our services. The Group-wide work for industrial companies has thus set another milestone.

2021
Headquarters converted into an energy-efficient office building

Due to the growth in our workforce, we have expanded and converted our headquarters in Weimar into a modern, energy-efficient office building.

2018
Expansion Consulting & Promotion

The demand for the reduction of fossil fuels and a sustainable CO2-free energy supply in industry is increasing considerably, which is why we have deliberately expanded our consulting and promotion activities.

2015
Restructuring of IPH

With the departure of partner Ulf Klawonn, the company is renamed IPH Selzer Ingenieure GmbH. 
Dipl.-Ing. (FH) Torsten Mohring is appointed Managing Director.

2011
Opening of the Frankfurt am Main branch

Opening of the branch office in Frankfurt a. Main due to the nationwide order situation.
Transformation of the GbR into Klawonn.Selzer GmbH.

2010
The dawn of a new era

The energy transition has increased the demand for energy-efficient solutions in the industrial sector. IPH provides engineering support for large industrial networks and the collaboration continues to this day. Climate protection and energy concepts for municipalities, administrative communities, districts and cities are developed and implemented nationwide.

1994
Foundation of Ingenieur Planung Haustechnik

by the 3 partners Dipl.-Ing. (FH) Kathrin Selzer, Dipl.-Ing. (FH) Wolfgang Frank and Dipl.-Ing. (FH) Ulf Klawonn