Preventive vs. Predictive vs. Prescriptive Maintenance: The Differences Explained

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Preventive, predictive, and prescriptive maintenance often get used as if they’re interchangeable, but they aren’t. Each approach solves a different maintenance need within manufacturing facilities, triggers based on different data, and gives your team a different next step. Here’s how they differ, how they build on each other, and where each one fits in your program. Think of preventative, predictive, and prescriptive maintenance as a laddering-up progression of your maintenance program, not a competition. Preventive maintenance lays the foundation with set repair calendars, predictive monitoring uses real-time machine condition data to optimize repair windows, and prescriptive diagnostics uses AI to bring in fault diagnosis and recommended fixes. In reality, most manufacturers run all different aspects of preventive, predictive, and prescriptive within their maintenance program by matching each approach to how critical the asset is and/or how much bandwidth the team has. First, let’s look at how each approach differs before examining how they fit together. Preventive maintenance follows a set schedule, either time bound (triggered at a specific time) or by usage intervals. Predictive maintenance uses actual machine condition data, a wireless vibration monitoring system showing a developing fault. Prescriptive maintenance identifies what teams should do through AI diagnostics that name the exact fault, recommend the repair, and suggest when to schedule it.

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