A mechanical system is a set of physical components that convert an input motion and force into a desired output motion and force. Mechanical systems have at least three elements: input, process and output. The input part of the system is any type of motion and force that drives the mechanical system.

mechanical system, Any building service using machines. They include plumbing, elevators, escalators, and heating and air-conditioning systems.

Mechanical systems are the various major systems throughout a home, such as the plumbing, electrical and heating/cooling systems. These systems can be costly repairs, and it is vitally important that buyers access the condition of the mechanical systems before they agree to purchase a home.