MEP stands for mechanical, electrical, and plumbing engineering, which refers to the installation of services that provide a comfortable space for building occupants. MEP engineering is the science and art of planning, designing, and managing these systems. The mechanical component of MEP is an important superset of HVAC services, which incorporates the control of environmental factors. MEP systems are responsible for the "creature comfort" features of a structure, making a building livable and pleasant, no matter if it is a single-story home or a 50-story skyscraper. MEP engineers research the best design according to the principles of engineering and supply installers with the specifications they develop. MEPs design is important for planning, decision-making, accurate documentation, performance- and cost-estimation, construction, and operating/maintaining the resulting facilities. MEP engineers must understand a broad range of disciplines, including dynamics, mechanics, fluids, thermodynamics, heat transfer, chemistry, electricity, and computers. MEP is increasingly used in building construction projects in countries of Asia such as Pakistan, China, and Saudi Arabia due to extreme climates in summer and winter.