Plant engineering

The plant engineering describes a technical discipline. Subject of this discipline is the construction of technical systems. In this area, the Niersberger Group mainly focuses on the process plant engineering and facilities which are based on regenerative energy technology processes and  the environmental technology. A fundamental principle is essential for the renewable energy technology and environmental engineering from Niersberger: The recovery of resources through a process. This process has a two-dimensional organization. For this, the plants need a non-fossil fuel to produce energy (1. dimension). At the end of this process, these plants will also be able to produce a resource for which there is a market (2. dimension).

Project development

Project development describes a process that is usually sparked by an idea. At Niersberger, project development is practiced both for housing and plant engineering projects.  In principle, the individual steps of the project development within these two business segments are identical. Project development includes the main steps
Idea >> analysis / feasibility >> planning >> implementation >> commissioning.

Real estate

At Niersberger, the real estate is summarized the area of housing construction. Although Niersberger primarily operates the housing business for municipal and public contracting entities, the real estate expertise of the companies belonging to the Niersberger Group Project construction method also includes the areas of investment and high-quality real estate for private entities. The third pillar of the project design is the concept of "affordable living quarters".

Hereby, the special competence lies in the field of revitalization and building modernization of existing apartment buildings, as well as all the accompanying and necessary services. The project development is equally part of this area, as is building-technical competence and the development of innovative usage and energy concepts.

Building technology

The building technology emerges from the classical understanding of the operation of an installation. While in the past you imagined the gas, water and heating engineer in this context, the profession has now become much more complex.

In addition to gas, water and heating, today the specialist areas of Climate, LexiconCooling, ventilation, media supply and control technology must also be addressed. Especially the supplying will play an ever increasing role in the building technology. Industrial companies have a great need for Supply services in the building control technology. This is also a service of the modern Niersberger Group. This requires knowledge and skills that extend beyond the classical knowledge of gas, water and heating installation technology. This requires a scalable solution-oriented way of thinking, that adapts to specific situations and meets the specific demands of customers.

The classic pipe building still belongs to this area. This is primarily covered by our Subsidiary in the Czech Republic.

Supply Engineering

Is a building or a facility being supplied with what is required (electricity, gas, water, air, oil, refrigeration, air conditioning)? Niersberger also asks itself this question. Numerous customers from industry and the housing market rely on the expertise of companies from the Niersberger Group.

Niersberger focuses on issues concerning the supply engineering, and how it can be operated in the most economical and sustainable manner. This doesn't just involve the supply of buildings or housing estates with heating, air-conditioning, refrigeration, or sanitary engineering, and the question of how to provide the required energy.

This, for example, even applies for the most complex production processes of industrial customers. These processes are often controlled by production technology. You need energy. But not only that. Also the connections to air, oil, or gas lines are important for the operations of a manufacturing line. This requires the special skills of a Niersberger process technician, who is able to fully comprehend the production process.


Environmental technology / renewable energies

The environmental engineering combines the technical procedures for the protection of the environment. As a special discipline of the energy production, it is based on the concept of an endless availability of certain resources acquired for the production of energy - in other words electricity. These resources include, for example, wind, water, geothermal energy or the sun. Further resources also include all forms of waste or residual materials, if it can be assumed that waste will be available indefinitely. While wind (wind power), water (hydroelectric), heat (geothermal energy) or sunlight (photovoltaic, solar energy) can be directly converted into energy, the recycling of waste requires a technical process to obtain electrical energy. This can, for example, occur in bio-gas or pyrolysis plants, whereas pyrolysis plants produce marketable raw materials such as Carbon Black (soot).

The idea behind this is that of a cycle. The recycling of waste, residuals or waste material (scrap tires), creates new recyclable residual materials, commodities, or just energy. This recovery of resources is also known as recycling.

Technical operations management (operations and maintenance, O & M)

The technical operations management of a plant is based on the operational processes of the running operation. This guarantees a constant operating process. A facility must be running. For this reason, the technique must be completely monitored and controlled. For this, the appropriate measuring instruments are provided to the technical operations management. Therefore, the continuous recording and documentation of all data required for the operation is possible.

They enable the technical operations management to conduct a continuous optimization of the system and thus exploit or improve the performance. On the basis of the data is possible to avoid even minor incidents, or at least have them fixed by the operator or the system supervisor. The technical operations management detects irregularities on the basis of the operating data, and initiates the necessary countermeasures.

The service and the maintenance are an aspect of the technical operations management. The regular maintenance of a plant has a positive effect on its life expectancy. Compliance with the prescribed maintenance intervals significantly prolongs the operational phase of a facility. Thereby, the types of maintenance greatly vary today.  Computer technology allows for certain malfunctions, such as software or controller problems to be resolved remotely, so that the presence of a technician on-site is often no longer required. That saves money for the operators and ensures an optimal maintenance of the system. High-quality maintenance service specialists perform services in such a manner that the downtimes of the plant are kept as low as possible.


General contractor

A general contractor (GC), is commonly the main responsible entity for the construction of a building. In addition to the housing construction, Niersberger also operates as a general contractor for the plant engineering.

The general contractor is the first and only point of contact for the builder-owner or the operator of a facility. He is responsible for the proper execution. The rights and obligations of the GC are governed by the contract between GC and the builder-owner/operators. The GC in turn will independently close contracts with subcontractors, to ensure the service provision required for the completion. The facility or the building is usually handed over by the GC to the contracting entity in a turn-key state and ready for operation.

Thereby, the GC also performs construction work. He has his own production capacities, and if required will commission the corresponding subcontractors special subsections of the performance.


General contractor

A general contractor focuses on coordination, planning and administrative aspects of a project. He designs, checks and corrects all relevant steps. Thereby, he usually has no own execution capacities, but awards the service provision entirely to subcontractors.

Energy Contracting

Contracting is an area, which regulates the operation of facilities and buildings. Thereby, a contract will be closed, which defines the rights and obligations of the contractual parties. In view of the different types of contracting, it is possible that different topical orientations of a contractual arrangement could arise. Contracting stipulates in the takeover and the provision of a service by the contractor, specifically defined in the contract subject matter and scope. The contractor is commissioned by the contracting-partner. The theory distinguishes between four types of contracting:

a) Performance-contracting / energy-conservation contracting
b) Plant contracting (energy supply)
c) financing contracting (contractor takes over the financing)
d) operations management contracting (technical and commercial operation of a plant)


Heating technology

The heating technology is the classical discipline of a gas, water and installation company. While the heating system was previously operated with coal or oil, the requirements of today are far more complex. Modern heating technology must meet the environmental and economic objectives of the operation. Here, the criteria of sustainability are transitioned into a moral and rational assessment tool of the heating technology. In other words: The customers don't just want to stay warm, they also want to subject the environment and their fellow man to the least possible environmental burden. Legislation has also responded to the environmental impact of older heating systems. Innovations such as the low energy house also affect the heating systems and their operation. Because through this legislation promotes and supports the sustainable heating installation.


Ventilation technology

The ventilation technology is divided into two subsections. The room air conditioning (HVAC) and the process air technology (PLT).

In the feel of air-conditioning, there is a distinction between AC systems with a ventilation function, and AC systems without a ventilation function. This is actually nothing more than the question of whether a space is ventilated with fresh air - outside air - or whether the air in this room is only circulated and, where appropriate, reprocessed (convection).

The PLT deals with technical processes and their supply or non-supply with air. The doctrine classically knows four procedures, which are summarized by the PLT: the extraction, separation, drying and conveyance. Niersberger has especially profiled itself here as a key expertise provider in the field of industrial PLT. PLT is responsible for the control and supply of industrial manufacturing processes with air. For this, Niersberger establishes the connections from machines to the air circulation. Often, this air must be of a particular quality (for example, oil-free). Essential here: A detailed process air management. They administer various air qualities in a production process, manufacture them or regulate their availability.

Strict regulations apply for both main areas, which are subject to an ongoing monitoring and control. Of course, the Niersberger Group also has to meet these requirements.

Good ventilation is of essential importance for each building or an enclosed space. Niersberger knows how air moves. We plan lines and supply ducts, which ensure an optimal air intake and discharge. Thereby it is important to identify critical points in the architecture of a building. The formation of mold, for example, can be avoided with a ventilation system from a specialist.


Sanitary technology

The sanitary engineering stands for a business area that generally handles the hygiene in public buildings or private houses. Water supply and sanitation are the central topics in this segment. The operation of a sustainable freshwater and wastewater supply is governed by the sanitary engineering. A third process is the water treatment of service water.

Therefore, on the one Sanitary Engineering focuses on processes (water supply, sewage disposal, water treatment), but also encompasses sanitary engineering products, for example, the good old water tap (nowadays the known as a mixer faucet) as well as bathtubs, shower trays, urinals and other bathroom fittings.


Air conditioning technology

Air conditioning regulates temperature and air quality in enclosed spaces and areas. Thereby, the environmental management takes over the air conditioning, which also cools, heat and humidifies on demand. It automatically manages temperature, humidity and CO2 levels. Today, modern air conditioners offer comfortable solutions, which can be managed automatically. Main reason for this is the systematic compensation between indoor and outdoor air. This ensures a constantly optimized management of the air conditioning and a comfortable interior climate. Of course it is also possible to intervene into this dynamic self-regulation manually upon request.

Refrigeration technology

At Niersberger, the refrigeration technology includes all imaginable application scenarios for refrigeration systems. In this segment, the Niersberger Group offers system solutions that are optimized for different industries. Demand for freezing technology is high, for example, in the chemical and pharmaceutical industry, but also in the medical and food technology industry. There, special cooling systems are in demand, which are capable of generating temperatures of well below minus 100O Celsius. To ensure these temperatures permanently, special refrigeration circuit components have been installed, which are indispensable for this type of cryo-technical (below minus 150°C) facility.

In addition, the Niersberger Group offers further solutions that are able to convince through functionality, performance, and flexibility.


Photovoltaic uses solar energy to generate electricity. Since the Renewable Energy Act came into force in Germany, demand for photovoltaic installations has been consistently high. No wonder: especially Germany was a pioneer in this segment. Also thanks to the legislation, which will secure the revenue of a photovoltaic plant over a period of 20 years. One reason for the attractiveness of such facilities. But other EU States have also closed the gap in this regard and are now subsidizing solar energy. No question: There are sun-richer countries, which are particularly suitable for this form of energy generation. Thus, Niersberger also maintains three photovoltaic installations in Italy, which are distributed all over the country.

In addition to the economic aspect, there is another remarkable advantage of photovoltaics: your energy balance. To produce electricity a photovoltaic system doesn't require any fossil fuels. No coal, oil or gas is wasted here. This drastically reduces the CO2 emissions of the solar energy. Throughout the entire service life, photovoltaic systems actually produce more power than the amount required for their manufacturing.


Biogas consists primarily of methane. The biogas can be burned by engines and used to generate electricity and heat. To make it a suitable combustion gas, it must first be cleaned.

The production of bio-gas is performed in biogas plants. During the operation process of a biogas plant, biomass is fermented. After the fermentation, energy is ultimately generated from biogas through several intermediate steps. The necessary biomass originates from renewable raw materials (maize, sugar beet, grass, rye) or from residues or waste materials (dung, liquid manure, grain stillage, compost, sewage sludge).

The Niersberger Group is an outspoken biogas expert. The group develops and plans tailor-made concepts for systems which must comply with a specific purpose, are operationally characterized by performance-capability as well as reliability and can be smoothly integrated into existing systems.