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Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →Hydraulic elevators raise a car by pumping oil into a cylinder; electric traction elevators move it with a motor-driven sheave, suspension media and a counterweight. For a low-rise, lower-use building, hydraulic may be a practical candidate. Traction serves a wider range of applications, including taller and busier buildings. Neither is the universal winner: compare the building’s travel, traffic, speed needs, available space and energy performance before choosing.
What is the difference between a hydraulic and electric elevator?
“Electric elevator” is imprecise: hydraulic lifts also use an AC electric motor, to drive the pump. In this comparison, electric means electric traction—the motor, sheave and suspension system that moves the car. The two systems differ in how they lift and lower the car, as well as in typical applications and equipment arrangements.
How a hydraulic elevator moves
An AC motor drives a pump, which forces oil into a cylinder and moves a plunger to raise the car. Valves control startup, slowdown and leveling. To descend, a valve allows gravity to return oil to the reservoir. Hydraulic configurations include direct-plunger, indirect telescoping and indirect roped designs; in the roped version, the plunger acts on hoist ropes. APPA’s elevator systems overview describes these arrangements.
How an electric traction elevator moves
A motor turns a drive sheave, and friction at that sheave moves the car and counterweight connected by ropes or other suspension media. Modern machine-room-less (MRL) traction designs commonly place a compact gearless permanent-magnet AC machine within the hoistway. MRL describes the machine’s location; it does not mean the lift has no machinery or requires no access provisions. Traditional gearless traction is used in high-use, taller buildings. APPA outlines the system types and applications.
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Where each type is commonly used
These are typical applications, not hard engineering limits. Actual suitability depends on the specific lift and building design.
| Type or configuration | Typical application described by APPA | Speed figures listed by APPA |
|---|---|---|
| Hydraulic | Two to five stories and low use | Typical maximum of 150 feet per minute |
| Geared traction | Historically, five to 15 stories and moderate use | 200–500 feet per minute |
| Traditional gearless traction | High-use buildings of 20 or more stories | Not stated by APPA for this category in the overview |
| MRL traction | Passenger and standard-capacity service applications | Typical speeds of 200, 350 and 500 feet per minute |
APPA does not display a publication year on its page; it was accessed in 2026. Its story counts and speeds are descriptive guidance, not universal maximums or requirements. See APPA’s overview.
Which elevator is better for a low-rise building?
Hydraulic is often considered for a low-rise, lower-use project, but the story count alone does not settle the choice. A traction lift may also fit, depending on the specification and building constraints. Compare expected passenger traffic and travel, the speed and ride the building needs, and whether the proposed equipment fits the available shaft, pit, overhead and machinery space. A vendor’s numeric thresholds or recommendations should be treated as guidance, not as universal engineering rules; Technical Lift Services’ comparison also identifies travel, use pattern, shaft space and energy strategy as selection considerations.
Does a traction elevator need a machine room?
Not always a separate machine room: MRL traction places its compact machine in the hoistway, typically near the top. That configuration still has machinery and requires design provisions for access and support; details vary by manufacturer. Hydraulic equipment location also depends on configuration—APPA describes below-car pit arrangements in some newer installations. Confirm the required spaces and access arrangements against the specific design rather than assuming either system has a single layout.
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The system label alone cannot establish which lift will use less energy in a particular building. The comparison should reflect the actual installation and its operating pattern, including expected use and the equipment and controls specified.
ISO 25745-2:2015 sets out an approach to estimate and classify operational energy for individual traction, hydraulic and positive-drive lifts using measurement, calculation or simulation. ISO says the edition was reviewed and confirmed in 2020; an amendment relating to express zones is listed in 2023. The standard’s scope excludes some whole-building and group effects, including machine-room lighting and HVAC and the effect of group dispatching, so its result is not a complete accounting of every building energy use.
Regenerative drives can return electricity to a building under certain operating conditions. Idle modes and destination dispatch can also affect energy use, according to ASME’s overview of energy-efficient elevator technologies. These are features to assess in a proposed system, not proof that every traction lift will outperform every hydraulic lift.
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How to choose an elevator for your building
- Define the service. Document the building’s travel, expected traffic and desired speed and ride performance. Treat common application ranges as a starting point, not a design limit.
- Confirm the physical fit. Have the proposed shaft, pit, overhead, machine location and equipment access checked against the building and manufacturer’s design.
- Compare operating energy on a like-for-like basis. Ask for an assessment of the specific lift under realistic operating conditions and identify the method and what it excludes. ISO 25745-2:2015 is one recognized approach for an individual lift.
- Review life-safety arrangements and local requirements. Check applicable local code and the proposal’s emergency communication, rescue, backup-power and maintenance arrangements with qualified professionals. A 2011 UK Department of Health and Social Care notice warns that passengers may be trapped after loss of electrical power, lift failure or breakdown; it concerns MRL lifts and does not establish a safety ranking between drive types. Read the notice.
- Request a project-specific specification. Ask a qualified lift professional to compare feasible systems against the building’s constraints and operating needs before equipment is selected.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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