Machine room-less elevators, typically abbreviated as MRL elevators, are elevators that do not have a designated machine room. There are many reasons why you may choose this type of elevator for your building.Machine-room-less elevators utilize a gearless traction machine located in the hoistway. The use of a counterweight assists the machine in turning the elevator sheave, which moves the cab through the hoistway.
The minimal electricity required to drive rope elevators is available with machine-room-less elevators which have their traction machines and controllers made compact and installed inside the hoistway to eliminate the need for a machine room.