top of page


HEGEL offers a comprehensive range of service, maintenance, operation, advisory and sustainability services for MEP solutions associated with all types of buildings. Our experts advise you on all issues of your building`s systems. In addition, we support you during the conceptual and detailed design up to the operational phase of your building`s MEP systems for new and modified constructions. 

With decades of collective experience and expertise in all relevant areas of mechanical, electrical, sanitary and environmental technology, HEGEL offers solutions and multidisciplinary know-how from a single source.

Due to our high reputation, our services are widely accepted all over the world. Additionally, our experts are on-site around the world and are familiar with both international and local requirements.



Mechanical systems take up a significant part of MEP design and engineering. This is because they comprise HVAC systems, which have piping for hot and cold water, dampers and controllers, ductwork fabrication, thermal insulation, and machines like diffusers, chiller units, and air handling units.

Different buildings, such as commercial, industrial & residential structures, used many mechanical systems. For instance, they can relate to transportation systems like escalators and lifts, industrial plants & machinery, etc. However, three types of systems account for most of the mechanical design work in a commercial project. They include;

  • Mechanical ventilation

  • Space heating

  • Air conditioning


These systems interact to keep indoor humidity and temperature within a comfortable range for inhabitants. Specifically, ventilation ensures adequate fresh air is supplied to the building to keep the concentration of pollutants safe and low. In addition, mechanical installations operate effectively when they have sufficient capacity.

On the other hand, over-engineering mechanical systems can lead to various challenges. For instance, oversized boilers and chillers cycle rapidly, thus lowering the equipment quickly and creating room temperature fluctuations. Similarly, over-engineering can lead to poor control of indoor relative humidity, irritating the skin and promoting bacteria and algae growth.



Electrical engineering mainly includes electrical power and lighting. However, it has other electrical works like emergency power, Date/ voice communication, security systems, TV, transformer substations, fire alarm system, surge protection, access control, and lightning protection systems.

Electrical systems can be classified into; control systems, power supply & distribution, security & access, interior & exterior lighting, information & telecommunication system, and detection & alarm systems.

One of the biggest challenges in electrical system design in high-rise buildings is defining the best routes for wiring and conduit. However, they’re more flexible than mechanical systems as they need much less space. Also, electrical systems are much easier to install around obstacles.

Wiring and conduits can be laid out using MEP design software. This helps to avoid location conflicts with plumbing and mechanical systems and minimize total circuit lengths. At the same time, engineers can use many MEP design programs to stimulate lighting systems to establish the optimal locations and number of lighting fixtures needed for the project.

Overall, mechanical and electrical systems tend to overlap much, hence the term Mechanical and Electrical (M&E) design. More importantly, HVAC design requires close collaboration between electrical and mechanical engineers during the MEP design phase. Electrical engineers design protection measures and electrical circuits that allow the MEP system to operate safely and continuously. In contrast, mechanical engineers calculate the cooling and heating loads of mechanical systems to determine the optimal capacities of the equipment.



Plumbing systems allow fluid movement in a building and usually involve pipes, tanks, plumbing fixtures, valves, and other components. Like mechanical and electrical systems, plumbing works involve laying out complex pipeworks. Engineering firms mainly used MEP design computer programs to simplify the plumbing design process.

Plumbing works include; cooling and heating, fuel gas piping, water recovery & treatment systems, waste removal, cold & hot water supply, and surface & rainwater drainage.

Another important thing worth mentioning about plumbing systems is that they interact with electrical and mechanical systems at several points. For instance, high-rise buildings often require water booster pumps powered by electricity. In addition, domestic hot water systems are heated by a dedicated boiler, electric heater, or a heater exchange connected to a boiler. Again, this shows how important it is for the design teams to collaborate when creating an MEP design for a particular project.

bottom of page