Time-Based vs. Meter-Based Preventive Maintenance: Which Is Right for Your Facility?

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Unexpected equipment failures can be expensive. That's why many maintenance teams move from reactive repairs to a preventive maintenance (PM) program.

Once you decide to implement preventive maintenance, the next question is how to schedule it. Should maintenance happen on a fixed date, or should it be based on how much the equipment has actually been used?

This is the difference between time-based and meter-based preventive maintenance.

Choosing the right schedule is important. Servicing equipment too often increases labour and parts costs. Waiting too long increases the risk of unexpected breakdowns and costly repairs. So, let’s talk about everything you should know!

Understanding the Two Maintenance Triggers

1. Time-Based Maintenance (Calendar-Driven)

Time-based maintenance triggers a work order automatically after a specific block of calendar time has passed, regardless of how much or how little the machine has actually run.

  • Examples: Checking fire extinguishers every 30 days, servicing an HVAC system every 6 months, or scheduling an annual structural safety audit.

2. Meter-Based Maintenance (Usage-Driven)

Meter-based maintenance ignores the calendar entirely. Instead, it triggers a work order only when an asset hits a specific operational metric or throughput milestone.

  • Examples: Changing the oil on a forklift every 250 operating hours, replacing a conveyor belt line every 100,000 cycles, or rotating vehicle tires every 10,000 kilometers.

Why Choosing the Right Schedule Matters?

Calendar-based schedules assume equipment is used at the same rate every day. In reality, production levels often change.

For example, a hydraulic press may need a filter change every 500 operating hours. During a busy production period, it could reach that limit in just three weeks. If maintenance is scheduled every two months instead, the machine may continue running well past its recommended service interval, increasing wear and the risk of failure.

During slower periods, the opposite can happen. The machine may receive maintenance even though the filter has seen very little use, resulting in unnecessary labour and replacement parts.

Industry studies show that organizations relying only on calendar-based maintenance can over-maintain low-use assets by 20% to 30%. At the same time, heavily used equipment is more likely to suffer unexpected breakdowns when maintenance isn't based on actual usage.

When to Use Time-Based vs. Meter-Based Maintenance?

Time-Based Maintenance

Meter-Based Maintenance

Buildings and facilities

Manufacturing equipment

Fire safety inspections

Pumps and motors

HVAC servicing

Forklifts and fleet vehicles

Compliance checks

Conveyor systems

Assets that deteriorate with age

Equipment with changing workloads


A simple rule is:

  • Use time-based maintenance for compliance, inspections, and equipment that naturally ages. 

  • Use meter-based maintenance for machinery where wear depends on operating hours, cycles, or distance. 

Most facilities benefit from using both methods together.

How Does Maintainly Automate Preventive Maintenance?

Tracking meter readings manually can be time-consuming. Technicians often record readings on paper before entering them into spreadsheets later, increasing the chance of missed maintenance.

Maintainly simplifies the entire process.

Technicians can scan an asset's QR code using the mobile app, enter the latest meter reading in seconds, and continue their work. The system automatically checks the reading against your preventive maintenance schedule. When the asset reaches its service threshold, Maintainly creates a work order and notifies the assigned technician.

Because the platform is designed to be simple and intuitive, only 2% of customers request formal training before using it.

Flexible Plans That Grow with Your Business

Whether you're managing a small workshop or a large manufacturing facility, Maintainly lets you start with the features you need and expand as your maintenance program grows.

  • Free Plan: Unlimited work orders, mobile app access, asset QR codes, checklists, and meter readings. 

  • Small Business Plan: Adds approval workflows, compliance records, and custom asset fields. 

  • Enterprise Plan: Includes unlimited automated preventive maintenance schedules, advanced reporting, and API access. 

The Bottom Line

There isn't one scheduling method that works for every asset.

Time-based maintenance is best for inspections, compliance, and equipment that naturally degrades over time. Meter-based maintenance is the better choice for machinery where wear depends on actual usage.

Using both approaches together helps reduce downtime, avoid unnecessary maintenance, and extend equipment life.

With Maintainly, you can automate both time-based and meter-based preventive maintenance from one easy-to-use platform, helping your team spend less time managing schedules and more time keeping equipment running.

Start your free Maintainly trial today and build a preventive maintenance program in minutes.

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