Predictive vs Preventive Elevator Maintenance Explained

Predictive vs preventive elevator maintenance comes down to timing. Preventive elevator maintenance services parts on a fixed schedule. Predictive elevator maintenance services them when measured condition shows wear. Most buildings need the fixed schedule as a base and add condition-based checks on the components that fail most often or cost most when they stop.

A fixed service calendar cannot see a brake that wears faster than the one beside it. That gap drives the whole debate over predictive vs preventive elevator maintenance, and most owners meet it only after a breakdown.

Both approaches have a place. Preventive visits catch what a technician can see and test on the day. Condition data catches what changes between visits. Jet Lifts describes its MRL gearless system with diagnostics aimed at improved uptime and predictive maintenance readiness, so the question applies to new lifts as much as old ones.

By the end you will be able to decide which parts of your lift stay on a fixed schedule and which get elevator condition monitoring.

What Is the Difference Between Predictive and Preventive Elevator Maintenance?

The difference is the trigger. Preventive elevator maintenance runs on a calendar or a run count. A technician visits at set intervals, then lubricates, adjusts, tests and replaces whatever the schedule says is due.

Predictive elevator maintenance runs on measured condition. Readings from the lift show a part drifting toward failure, and the work happens when the readings say so.

Preventive work can replace a healthy part early. It can also miss a part that wears out between visits. Predictive work targets the part that is changing, but it needs data and someone who reads it.

How Does Predictive Maintenance Reduce Elevator Failures?

It turns a slow change into a visible trend. Door operation time and motor current are typical examples of signals that drift before a component fails. Ask your supplier which signals its system records, because the list differs between makes.

Set a limit for each signal. When a trend crosses the limit, a technician inspects the part before it stops the lift. Every alert then ends in a physical check, which keeps false alarms from turning into unnecessary part changes.

ISO 17359:2018 gives guidelines for setting up a condition monitoring programme and applies to machines in general. Use it as a reference when you ask a supplier how its elevator condition monitoring works.

When Should Predictive Elevator Maintenance Be Used?

Use it where a stoppage costs more than the monitoring does. These cases qualify first:

• Hospitals and other buildings where people depend on the lift.
• Busy offices and towers where one lift carries heavy traffic.
• Lifts with a history of repeat faults.
• Buildings with a single lift and no backup car.

The traction gearless system suits mid to high-rise buildings with high traffic, and a stoppage costs most in that profile. The hydraulic system has fewer moving parts and lower maintenance needs. A fixed schedule is usually enough for a lift like that, and you can add monitoring if the building cannot tolerate an outage.

Which Elevator Maintenance Strategy Is Better?

Neither wins alone, and a combined elevator maintenance strategy gives the best coverage. The US Department of Energy’s operations and maintenance guide, prepared by PNNL, estimates savings of 12 to 18% for preventive maintenance over reactive repair and 8 to 12% for predictive over preventive alone (PNNL O&M Best Practices Guide). Those figures describe industrial equipment in general and give no lift-specific saving.

Criteria	Preventive	Predictive
Trigger	Calendar or run count	Measured condition
Strength	Simple to contract and audit	Targets the part that is changing
Weak point	Replaces healthy parts or misses fast wear	Needs data, tools and skilled review
Best fit	Every lift as the base	High-traffic or critical lifts

How Do You Build an Elevator Maintenance Program?

Start with the components ranked by what happens when each one fails. Good elevator maintenance planning follows five steps:

1. Rank components by the cost and risk of failure.
2. Keep every component on a fixed schedule as the base.
3. Pick the few that justify condition monitoring and confirm which signals the controller records.
4. Set alarm limits, name who reviews alerts and agree how fast they must act.
5. Compare the call log with the plan each quarter and adjust.

Write this split into the service contract so your elevator maintenance program has defined scope and response terms. Ask the supplier whether your controller can supply the signals. If it cannot, read when partial modernisation is better than full replacement before you decide on a retrofit.

Fix the Schedule, Then Add the Data

Keep preventive visits as the base for every lift and add predictive checks where an outage hurts most. Put the split in writing so both sides know what gets measured and who acts on it.

If your controller or drive is too old to report on its own condition, review the Jet Lifts modernisation options and request a site evaluation.

FAQs

Can One Lift Use Both Approaches?

Yes. Most lifts run preventive visits as the base and add predictive elevator maintenance for selected components. Both share one elevator maintenance program and one set of service records.

Does Predictive Maintenance Replace Technician Visits?

No. Readings point to a part, and a technician still inspects and repairs it. Regular visits also cover wear that no sensor measures.

What Data Do I Need to Start Elevator Condition Monitoring?

Start with your service call log and fault history. Then ask the supplier which signals the controller records and how long it stores them. Without that history, alarm limits are guesses.