CO2-free factory Sustainability that pays off

CO2-free cities and municipalities We are working on the future

Your consulting engineers Over 30 years of experience

Design and planning Progress through innovation

Technical equipment For your demanding construction projects

IPH Selzer Ingenieure GmbH Experience know-how and passion

IPH Selzer is an internationally operating company, independent of the market, which offers individual, innovative, technical solutions in the field of resource and energy efficiency and sustainability, combined with the goal of maximum energy and CO2 savings.

Due to our orientation as an engineering office for technical building equipment, solutions developed by us can be accompanied, planned and implemented from the very beginning, which makes us a leading provider in the field of energy optimization and strategy development in the industry.  
Our strengths lie in the planning of CO2-free factories and CO2-free cities.

Achieving energy with high (cost-) efficiency, comfort and quality at the same time requires new complex thinking, new ways of working and new fields of activity. We are equipped for this.  
Let us convince you of our range of services! 

CO2-free factory

We analyze (Scope 1,2,3), reduce, avoid, recover your energy and show you the way to a crisis-proof CO2-neutral energy supply.

BSE

Our engineers implement the potential from the overall energy optimization for you. 
We plan, tender and monitor your construction projects.

Strategy development

We leverage energy potential that can make a city, a factory, a clinic or an entire company climate-neutral.

Industrial process technology

We analyze your processes from an overall energy perspective and plan individual, sustainable solutions tailored to your production.

CO2-free cities, neighborhoods & municipalities

Which interplay of regenerative technologies enables CO2-free cities and districts? Heat planning and transformation planning. You've come to the right place!

Subsidies

to achieve your goals and for the good of society for sustainable climate protection.

Latest projects

Trade/industry

Modernization of the Heating System at the Hannover Airport Control Tower Building Services Engineering (BSE) Design and Energy Consulting with a Feasibility Analysis in accordance with VDI 2067

Planning/Construction Period08/2024-12/2025
ClientDeutsche…
Grant-funded project

New Construction to meet demand at the Edith Stein School in Erfurt Pilot Project: Wood Construction with Green Facades

Planning/Construction Period2022-2027
ClientBistum Erfurt –…
Neighborhood concepts

Neighborhood development and planning Kirschberg neighborhood Weimar Errichtung von 288 Mietwohnungen und 115 Eigentumswohnungen mit Tiefgarage und Heizzentrale

Planning/ execution period 12/2018 – 02/2022
ClientBPD…

Trade fairs & events Meet us here

bis 21.05.2026 Weimarhalle (Weimar)

8th IPH Selzer Ingenieure Energy Conference – Large-Scale Heat Pumps and Storage Technologies

We cordially invite you to our 8th Energy Conference, on Thursday, May 21, 2026, from 8:30 a.m. to…
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News IPH News

4th Meeting of the 1st Network for Municipal Heat Planning & Heating Technologies

On June 24, the 4th network meeting of the 1st Thuringia Network for Municipal Heat Planning & Heating Technologies was once again successfully held…

8th IPH Energy Conference - Large-Scale Heat Pumps and Storage Technologies

On May 21, 2026, our 8th Energy Conference took place at the Weimarhalle. This year’s event focused on the topic of “Large-scale heat pumps and…

1. The Thuringia Network for Municipal Heat Planning and Heating Technologies Receives an Award from AGEEN

The “1st Thuringia Network for Municipal Heat Planning & Heat Technologies,” founded in August 2025 by IPH Selzer Ingenieure, was awarded the seal of…
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