What is a machine-room-less (MRL) elevator?

A machine-room-less (MRL) elevator is specifically designed to function without a dedicated machine room. Instead, the machinery and components are integrated into the hoistway or the elevator shaft itself. This design allows for a more efficient use of building space, making MRL elevators particularly attractive for modern constructions where maximizing usable square footage is important.

The lack of a separate machine room not only saves space but also simplifies installation and maintenance, as the equipment is more accessible. MRL elevators can thus offer a streamlined and compact solution for vertical transportation in buildings, aligning with contemporary architectural practices that prioritize functionality and aesthetic appeal.

Understanding this definition clarifies the unique advantages MRL elevators have over traditional elevators, which typically require substantial machinery room separate from the elevator shafts.