mechanical engineering
An individual or firm that designs a building's mechanical, climate-control, and building automation systems.
A mechanical engineer, or a mechanical engineering firm, is the individual or company who designs the mechanical systems of a building or other structure, especially its heating, air conditioning, and ventilation systems, as well as other climate control and building automation systems.
The design covers mechanical systems serving the building, with heating, air conditioning, and ventilation as principal examples. The design role also includes other climate-control and building automation systems.
MEP engineering combines mechanical, electrical, and plumbing engineering. Mechanical systems installation concerns fitting equipment at the property, while this role concerns its design.