Types of Elevators Explained: Hoist System, Machine Room Design, and Application-Based Classification

Elevators are engineered vertical transport systems that move people and goods safely between floors. Although most cabins look similar from the inside, the systems behind them differ in drive method, mechanical layout, load profile, and usage scenario.

This guide helps developers, engineers, and building owners connect elevator system types with real-world building requirements.

Types of Elevators by Hoist System: How They Move

Drive systems decide how elevators move and set their speed and load capacity. The two big systems—traction and hydraulic—differ in how they transfer power and where they fit best.

Traction Elevators: Geared vs. Gearless

Traction elevators use steel ropes or belts attached to a cabin and a counterweight. An electric motor spins a wheel called a sheave to raise or lower the cabin.

The counterweight balances the load and cuts down on the motor’s energy use. This setup lets traction elevators travel long distances at high speeds, so they’re a go-to for tall commercial or residential towers.

In modern commercial buildings, traction elevators dominate due to their efficiency, speed range, and suitability for taller structures.

There are two main traction types: geared and gearless elevators.

Geared Traction Elevators: An early type of elevator

A geared traction elevator employs an electric motor coupled to a reduction gearbox, which transfers rotational force to a drive sheave. The sheave controls the movement of wire ropes attached to the elevator car and counterweight, allowing speed and positional control for mid-rise applications, typically supporting speeds up to 500 feet per minute and travel heights of up to 250 feet.

Advantages of gear traction elevators are as below:

● moderate speeds: Typically up to about 1.0–3.5 m/s

● Energy efficiency: Uses less power than hydraulic elevators, especially for frequent use.

Gear traction is best for:

● Mid-rise buildings, 5–20 stories.

● Offices, hotels, hospitals, and residential buildings where moderate speed, reliable operation, and energy efficiency are required.

Gearless Traction Elevators: for Skyscrapers

A gearless traction elevator utilizes a high-speed, low-torque electric motor whose shaft is directly connected to the drive sheave (pulley). There is no gearbox in between. The sheave moves the hoist ropes, which move the car and counterweight. Gearless traction is the only engineering solution capable of solving the challenge of vertical transport in super-tall structures exceeding 500 meters.

Advantages of gearless traction elevators are as below:

● High speed: 1.0–10 m/s and above

● High efficiency: better energy efficiency than geared traction.

● Smooth, quiet ride: Good ride comfort and floor leveling accuracy because there is no gearbox in between that causes vibration.

● Less routine mechanical maintenance is needed because there is less chance of oil leaks.

Gearless traction is best for:

● Low, medium and high-rise buildings: Roughly > 6–30 floors, up to super-tall towers.

● Where speed and ride comfort are important: General housing, high-end offices, hotels, high-end residential, observation towers.

● Very high traffic usage: Busy commercial cores, transport hubs, hospitals.

Hydraulic Elevators: For Low-Rise Buildings

Hydraulic elevators use a piston and fluid under pressure to lift the cabin from below. When hydraulic fluid gets pumped into a cylinder, it pushes the piston upward; releasing the fluid lets the cabin come back down.

This system is simple and tough, fitting buildings up to six stories. Hydraulic elevators usually cost less to install and handle heavy loads well. They move slower and use more energy since the pump must lift the full weight of the cabin and passengers.

Advantages of hydraulic elevator are as below:

● Simple, robust design with strong lifting force

● Suitable for low speeds and short travel heights

A hydraulic elevator is best for:

● Low-rise buildings up to about three stories

● Sites where heavy loads are needed over short travel distances

● Projects with tighter initial budgets

Emerging Elevator Technologies and Efficiency Trends

Pneumatic Elevators- For Low-Duty Home lifts

A pneumatic, or vacuum elevator is a type of elevator that uses air pressure and vacuum force to lift and lower the cabin within a vertical cylinder. The lift runs inside a vertical tube, and pumps at the top of the shaft create a pressure difference above and below the car.

Vacuum elevators are self-supporting. They do not need a deep pit, large shaft, or separate machine room, which makes them popular in existing homes with limited space. The cabins are compact and often round, with a mostly clear shell that offers a panoramic view. Travel speed and capacity are limited—typically one or two passengers and a few stops—so they work best as light-duty home lifts rather than full-sized commercial lifts.

Regenerative Drives – for Sustainability

Many modern traction elevators now use regenerative drives to improve energy efficiency. When the car travels in the direction where gravity does most of the work, the motor can act like a generator and feed power back into the building’s electrical system instead of wasting it as heat.

Regenerative drive reduces overall energy consumption and helps large commercial projects meet stricter sustainability or green building targets.

Types of Elevators by Machine Room: MR vs. MRL

Elevators can be sorted by how their machinery is stored and reached. The big difference is whether the equipment sits in a dedicated space above the shaft or inside the shaft itself. This choice affects building design, space, and maintenance convenience.

Machine Room Elevators (MR)

A Machine Room (MR) elevator keeps its main motor, control cabinet, and drive equipment in a separate room, usually above the shaft or on the roof. Technicians get full access to big components during maintenance, which is convenient for them to maintain.

MR systems are often traction elevators in mid- to high-rise buildings. They handle heavier loads, longer distances, and faster speeds. Separating components helps with cooling, which can extend the life of electrical parts.

MR elevators need extra floor area for the machine room. The building design must reserve roof or top-floor space for this, which might add the building height. MR elevators are often the preferred choice when performance, reliability, and maintenance access are critical.

Machine Room-Less Elevators (MRL)

A Machine Room-Less (MRL) elevator skips the external machine room by putting its motor and controls inside the shaft, usually near the top. This design saves space and gives architects more freedom in planning roofs and floors.

MRL systems are usually gearless traction elevators in mid-rise buildings. In other words, most MRL designs are a variation of traction elevators, but with the machinery moved into the shaft instead of a separate machine room.

The motor is compact and energy-efficient, often running on a permanent magnet gearless system that cuts energy consumption compared to hydraulic or older traction types.

This setup, while space-saving, can make maintenance work harder. Technicians work in tight shaft spaces, and big repairs might take longer. Some local codes also set rules for access and ventilation of confined machinery.

MRL vs. MR Elevator Comparison

The table below summarizes the main differences between MR and MRL elevators.

Feature	MRL Elevator	MR Elevator
Machine Room	Motor installed inside shaft	Separate machine room above the shaft
Space Use	Very space-efficient; ideal for buildings with limited machine-room space	Requires additional building space for machinery
Maintenance Access	More confined; technicians work inside the shaft area	Spacious, easier access for maintenance and repairs
Typical Building Use	Low- to mid-rise buildings	Low-Mid- to high-rise buildings
Speed Range	Generally lower speed than MR	Can reach higher speeds, up to 2,000 ft/min

Types of Elevators by Application – What They Carry

Elevators get designed to move certain loads safely and efficiently. Their design, capacity, and features shift depending on whether they carry people, goods, or smaller items.

Passenger Elevators

Passenger elevators are designed to transport people efficiently and comfortably in residential, commercial, and public buildings. They are the most common elevator type worldwide.

Typical passenger elevator capacities range from 1,000 to 5,500 pounds, depending on building size and traffic demand. Compared with other elevator types, passenger elevators prioritize ride comfort, smooth acceleration, precise leveling, and accessibility features.

They are widely used in apartments, offices, hotels, shopping centers, and transportation hubs, where predictable traffic flow and user experience are critical.

Freight Elevators

Freight elevators are built to move heavy goods, equipment, and materials rather than people. Their design focuses on load strength and durability instead of cabin appearance.

Capacities usually start around 2,000 pounds and can exceed 45,000 pounds for industrial applications. Freight elevators typically operate at lower speeds to ensure stability under heavy loads.

They are commonly found in warehouses, factories, hospitals, and service areas of commercial buildings, where frequent material transport is required.

Service Elevators

Service elevators support back-of-house operations in buildings such as hotels, hospitals, and large commercial complexes. They are used to transport staff, carts, supplies, and equipment efficiently without interfering with public traffic.

In terms of design, service elevators sit between passenger and freight elevators. They offer moderate load capacity, durable interiors, and wider doors, while still maintaining smoother ride quality than pure freight lifts.

Separating service elevators from public passenger elevators helps improve operational efficiency and keeps public traffic flowing smoothly.

Home Lifts

Home elevators are designed for private residences, primarily to improve convenience and accessibility in multi-level homes.

They typically serve two to five stops and accommodate one to three passengers. Compact drive systems—such as machine-room-less traction, hydraulic, or pneumatic systems—allow installation in limited spaces.

Home elevators operate at lower speeds and lighter duty cycles compared with commercial elevators, making them suitable for daily residential use rather than continuous high traffic.

Dumbwaiters

Dumbwaiters are small freight elevators used to transport light items such as food, documents, medical supplies, or laundry between floors.

Load capacities generally range from 50 to 500 pounds, and the systems require minimal shaft space. Dumbwaiters are commonly installed in restaurants, hotels, hospitals, and offices where frequent item transfer improves workflow efficiency.

Although compact, they still require proper safety controls and regular maintenance to ensure reliable operation.

How to choose the right type of elevator?

To choose the right type of elevator, you should consider the building scenario, building height, traffic volume, load requirements, building layout, and maintain strategies.

• Building Scenario:
   The building’s function determines whether the elevator should prioritize comfort, durability, or load capacity, such as passenger comfort in residences or robustness in commercial and service buildings.
• Building Height:
   The number of floors limits suitable drive systems, with low-rise buildings allowing simpler elevators and taller buildings requiring gearless traction systems for longer travel distances.
• Traffic Volume:
   Higher traffic demands elevators designed for frequent operation and efficient movement, while low-traffic environments can rely on lighter-duty systems with lower operating speeds.
• Load Requirements:
   What the elevator carries defines capacity and construction, with passenger elevators focusing on comfort and freight or service elevators emphasizing structural strength.
• Building Layout:
   Shaft dimensions, pit depth, overhead space, and machine room availability determine whether MR, MRL, or compact elevator configurations are feasible.
• Maintenance Strategy:
   Energy consumption, service access, and spare-part availability influence long-term cost, with gearless traction systems generally offering lower maintenance and higher efficiency.

Building Scenario	Typical Height	Recommended Elevator Type
Low-rise residential building	3–5 floors	Gearless traction elevator or hydraulic elevator
Mid-rise residential or commercial building	6–20 floors	Gearless traction MRL elevator
High-rise or skyscraper	20+ floors	Gearless traction MR elevator
Industrial or heavy-duty facility	2–6 floors	Hydraulic elevator or traction freight elevator
Hotel or hospital service core	6–20 floors	Service traction elevator (MR or MRL, depending on space)
Private home (new construction)	2–5 stops	Compact MRL home elevator
Home retrofit with limited space	2–4 stops	MRL home elevator or pneumatic (vacuum) elevator
Restaurant or healthcare logistics	2–6 floors	Dumbwaiter or small freight elevator

What is the most commonly used elevator?

Traction elevators are the most common in commercial and residential buildings. They use steel ropes or belts hooked up to a counterweight, which makes for smooth and efficient rides.

Within that category, gearless traction elevators are super popular in mid- to high-rise buildings because they’re reliable and use less energy. A lot of new systems mix traction tech with machine-room-less designs to save space.

Which elevator type is the best choice for skyscrapers?

The best and effectively only choice for skyscrapers (buildings over 300 meters or 980 feet) is the Gearless Traction Elevator. Geared elevators max out around 2.5 m/s. At this speed, it would take several minutes to reach the top of a 100-story building.

Which elevator type is the best choice for 5-story buildings?

For low-rise buildings up to about six stories, the best choice is usually a gearless traction elevator, as it is compact with more mature technologies and convenient installation.

Which elevator type uses the least energy?

Gearless traction elevators achieve the lowest energy consumption. By eliminating the need for a gearbox, they reduce energy loss during transmission, and when combined with an optimized counterweight balance system, energy consumption can be further significantly lowered.

Which elevator type requires the least maintenance?

Gearless traction elevators require the least maintenance because they have fewer moving parts and no oil-filled gearbox, although they still need regular inspections and basic adjustments to stay safe and reliable.

Which elevator type saves the most building space?

Machine room-less (MRL) traction elevators save the most building space, since their motor and controls are installed inside the shaft instead of in a separate machine room.

Which elevator type is best for homes with limited space?

For homes with limited space, compact MRL home elevators works best.

Frequently Asked Questions

What is the cheapest type of elevator?

Small machine room gearless permanent magnet synchronous elevators usually cost the least to install. With mature technology and complete spare parts, the cost of manufacturing and installation is cheaper.

What is the most commonly used elevator type for a home elevator?

Most home elevators use a machine-room-less (MRL) system. The choice really depends on how much space you have and what kind of design you want.

MRL elevators are catching on with homeowners who care about energy efficiency and a compact look. Since they don’t need a separate machine room, they’re great for modern homes that don’t have a lot of extra space to work with.